Bibliography from ADS file: abt.bib Abt, H. A., “How Long Does It Take To Get A Paper Accepted For Publication August 16, 2021 By The ApJ?”, 2010AAS...21531605A ADS Abt, H. A., “Stellar Rotation versus Duplicity in Open Cluster Early-Type Stars”, 2009PASP..121.1307A ADS Abt, H. A., “The Lifetimes of Astronomical Papers and the Completeness of the Abt, H. A., “Reviewing and Revision Times for The Astrophysical Journal”, ADS”, 2019BAAS...51d0207A ADS 2009PASP..121.1291A ADS Abt, H. A., “VizieR Online Data Catalog: The evolutionary status of GK sub- Abt, H. A., “VizieR Online Data Catalog: MK classifications of spectroscopic giants (Abt, 2019)”, 2019yCat..51570177A ADS binaries (Abt, 2009)”, 2009yCat..21800117A ADS Abt, H. A., “Lifetime Data on Astronomical Papers and Citations”, Abt, H. A., “The Spectral-type Limits of the Barr Effect”, 2019RNAAS...3...93A ADS 2009PASP..121..811A ADS Abt, H. A., “The Evolutionary Status of GK Subgiants”, Abt, H. A., “The Difference between Metal-poor and Metal-rich Binaries”, 2019AJ....157..177A ADS 2009ASPC..404..209A ADS Abt, H. A., “Publication Changes during the IAU History”, Abt, H. A., “Why are There Normal Slow Rotators Among A-Type Stars?”, 2019IAUS..349..397A ADS 2009AJ....138...28A ADS Abt, H. A., “Principles of Editing”, 2019BAAS...51a0201A ADS Abt, H. A., “VizieR Online Data Catalog: MK spectral types of Visual Multiples Breckinridge, J. B. & Abt, H.: 2018, The life and times of Aden and Marjorie (Abt, 2008)”, 2009yCat..21760216A ADS Meinel; a biography, 33–34 2018iau3.book...33B ADS Abt, H. A., “Reference Sources in Research Literature”, Fekel, F. C., Willmarth, D. W., Abt, H. A., & Pourbaix, D., “Spectroscopic 2009PASP..121..544A ADS Orbits for Late-type Stars. II”, 2018AJ....156..117F ADS Abt, H. A., “Evidence that Most Binaries Do not Evolve after the Primaries Abt, H. A., “What Fraction of Papers in Astronomy and Physics Are Not Cited Reach the Main Sequence”, 2009PASP..121..248A ADS in 40 Years?”, 2018PASP..130g4506A ADS Abt, H. A., “Do Astronomical Journals Still Have Extensive Self-referencing?”, Abt, H. A. & Fountain, J. W., “An earlier explosion date for the Crab Nebula 2009PASP..121...73A ADS supernova”, 2018RAA....18...37A ADS Abt, H. A., “MK Classifications of Spectroscopic Binaries”, Abt, H. A., “The Most Productive Years of Average Astronomers”, 2009ApJS..180..117A ADS 2017PASP..129k4505A ADS Abt, H. A., “Why Are There Normal Slow Rotators among A-type Stars?”, Zhai, M., Abt, H., Zhao, G., & Li, C., “VizieR Online Data Cata- 2009AAS...21336302A ADS log: Shape parameters for 154 Galactic open clusters (Zhai+, 2017)”, Abt, H. A., “The Kitt Peak 2.1-meter Telescope: An Unusually Innovative Tele- 2017yCat..51530057Z ADS scope”, 2009AAS...21320008A ADS Latham, D. W., Mazeh, T., Davis, R. J., Stefanik, R. P., & Abt, H. A., “VizieR On- Abt, H. A., “Evidence That the Mean Radial Velocities of Many B0-B3 Stars Are line Data Catalog: Radial velocities of NGP wide binaries (Latham+, 1991)”, Systematically Incorrect”, 2008PASP..120..715A ADS 2017yCat..51010625L ADS Abt, H. A., “Visual Multiples. IX. MK Spectral Types”, Abt, H. A., “What Happens to Am Stars After They Leave the Main Sequence?”, 2008ApJS..176..216A ADS 2017PASP..129d4201A ADS Abt, H. A., “New Data on A-Type Disk Stars”, 2008ApJS..174..499A ADS Abt, H. A., “Citations and Team Sizes”, 2017PASP..129b4008A ADS Abt, H. A., “The Difference Between Metal-Poor and Metal-Rich Binaries”, Zhai, M., Abt, H., Zhao, G., & Li, C., “The Shape Evolution of Galac- 2008AJ....135..722A ADS tic Open Clusters from Observations Under Galactic External Forces”, Abt, H. A., “The Future of Single-authored Papers”, 2007AAS...211.7105A 2017AJ....153...57Z ADS ADS Willmarth, D. W., Fekel, F. C., Abt, H. A., & Pourbaix, D., “VizieR Online Data Abt, H. A., “Observed Orbital Eccentricities”, 2007IAUS..240..414A ADS Catalog: Spectroscopic orbits for 15 late-type stars (Willmarth+, 2016)”, Abt, H. A., “Tidal Effects in Binaries”, 2007ASPC..362...92A ADS 2016yCat..51520046W ADS Abt, H. A., “Editor’s Forum”, 2007fpca.conf..239A ADS Abt, H. A., “At What Ages Did Astronomers Write Their Most Important Pa- Abt, H. A., “Changing Sources for Research Literature”, pers?”, 2016PASP..128i4501A ADS 2007fpca.conf..177A ADS Willmarth, D. W., Fekel, F. C., Abt, H. A., & Pourbaix, D., “Spectroscopic Abt, H. A., “The Numbers of Scientific Papers Depend Only on the Numbers of Orbits for 15 Late-type Stars”, 2016AJ....152...46W ADS Scientists”, 2006AAS...20910803A ADS Abt, H. A., “Hot Gaseous Stellar Disks Avoid Regions of Low Interstellar Den- Abt, H. A., “Observed Orbital Eccentricities. II. Late-Type Stars”, sities”, 2015PASP..127.1218A ADS 2006ApJ...651.1151A ADS Abt, H. A. & Biggs, E. S., “VizieR Online Data Catalog: Bibliography of stellar Abt, H. A. & Willmarth, D., “VizieR Online Data Catalog: Radial velocities of radial velocities (Abt+ 1972)”, 2015yCat.3004....0A ADS solar-type stars (Abt+, 2006)”, 2006yCat..21620207A ADS Abt, H. A., “The Lifetimes of Astronomers”, 2015PASP..127..713A ADS Abt, H. A., “An anomalous journal impact factor”, 2006AN....327..737A Abt, H. A., “The Research Use of Astronomical Monographs”, ADS 2014PASP..126..409A ADS Abt, H. A. & Willmarth, D., “The Secondaries of Solar-Type Primaries. I. The Abt, H. A.: 2014b, Mayall, Nicholas Ulrich, 1426–1427 Radial Velocities”, 2006ApJS..162..207A ADS 2014bea..book.1426A ADS Abt, H. A.: 2006, A Comparison of the Citation Counts in the Science Ci- Abt, H. A.: 2014c, Joy, Alfred Harrison, 1142–1144 2014bea..book.1142A tation Index and the NASA Astrophysics Data System, Vol. 6, 169–174 ADS 2006ASSL..335..169A ADS Abt, H. A.: 2014d, Bohlin, Karl Petrus Teodor, 256–256 Abt, H. A., “National Astronomical Productivities”, 2005BAAS...37.1540A 2014bea..book..256A ADS ADS Abt, H. A., “Scientific Efficiency of Ground-based Telescopes”, Abt, H. A., “Observed Orbital Eccentricities”, 2005ApJ...629..507A ADS 2012AJ....144...91A ADS Abt, H., “Estimated Completeness of the Science Citation Index”, Abt, H. A.: 2012b, The h- and a-Indexes in Astronomy, Vol. 1, 245–252 2005BAAS...37..551A ADS 2012opsa.book..245A ADS Abt, H. A., “Erratum: “Spectral Classification of Stars in A Supplement to the Abt, H. A., “The age of the local interstellar bubble”, 2012AIPC.1452....9A Bright Star Catalogue“ (ApJS, ADS 155, 175 [2004])”, 2005ApJS..157..174A ADS Abt, H. A., “The Discovered Exoplanets Have The Same Orbital Elements As Abt, H. A., “Peer Reviewing”, 2005coas.conf...19A ADS Stellar Systems”, 2012AAS...22012102A ADS Abt, H. A., “Information Obtainable from Bibliometric Studies”, Abt, H. A., “The Age of the Local Interstellar Bubble”, 2005coas.conf....2A ADS 2011ASPC..451..315A ADS Abt, H. A., “The Formation of Planets”, 2004AAS...205.3903A ADS Abt, H. A., “The Nature of the Exoplanets”, 2011AIPC.1346...14A ADS Abt, H. A., “VizieR Online Data Catalog: MK Classification of Bright Star Abt, H. A., “The Age of the Local Interstellar Bubble”, Supplement (Abt, 2004)”, 2004yCat..21550175A ADS 2011AJ....141..165A ADS Abt, H. A., “VizieR Online Data Catalog: Visual multiples. VIII. (Abt+, 1985)”, Abt, H. A., “Symposium Summary”, 2011RMxAC..39..117A ADS 2004yCat..20590095A ADS Abt, H. A., “The Tonantzintla Search for High Luminosity Stars”, Abt, H. A., “Spectral Classification of Stars in A Supplement to the Bright Star 2011RMxAC..39...65A ADS Catalogue”, 2004ApJS..155..175A ADS Abt, H. A., “Astronomical Publication Rates in the US, UK, and Europe”, Abt, H. A. & Boonyarak, C., “Tidal Effects in Binaries of Various Periods”, 2011ASSP...24...77A ADS 2004ApJ...616..562A ADS Abt, H. A., “The Origin of the Exoplanets”, 2010PASP..122.1015A ADS Abt, H. A. & Willmarth, D. W., “The Mass Distribution of Secondaries to Solar- Abt, H. A., “Have We Reached a Maximum Astronomical Research Output?”, Type Stars”, 2004RMxAC..21...37A ADS 2010PASP..122..955A ADS Abt, H. A., “Dedication to Arcadio Poveda”, 2004RMxAC..21....1A ADS

1 Abt, H. A., “VizieR Online Data Catalog: MK Classification of Visual Multiples Abt, H. A., “Announcement: New Editor-In-Chief, Robert C. Kennicutt, Jr.”, (Abt, 1981)”, 2004yCat.3106....0A ADS 1999ApJ...518....1A ADS Abt, H. A., “Post Main-Sequence Changes in Rotational Velocities”, Abt, H. A., “Announcement: New Editor-in-Chief Robert C. Kennicutt”, 2004IAUS..215..154A ADS 1999ApJS..122...19A ADS Abt, H. A., “What Kind of Astronomical Papers are Still Referenced 50 Years Abt, H. A.: 1999d, The American Astronomical Society and The Astrophysical After Publication?”, 2004BAAS...36..948A ADS Journal, 176 1999aasf.book..176A ADS Abt, H. A., “Evidence for an Interstellar Origin for Hot Inner Disks around Abt, H. A., “Electronic publication in 1997.”, 1998PABei..16...87A ADS Rapidly Rotating Early-type Stars”, 2004AAS...204.2401A ADS Abt, H. A. & Dalgarno, A., “Announcement: embedded halftones.”, Abt, H. A., “Evidence for an Interstellar Origin of Stellar Shells”, 1998ApJ...499..525A ADS 2004ApJ...603L.109A ADS Abt, H. A., “Is the Astronomical Literature Still Expanding Exponentially?”, Abt, H. A.: 2003a, The Institute for Scientific Information and the Science Cita- 1998PASP..110..210A ADS tion Index, Vol. 4, 197–204 2003ASSL..296..197A ADS Abt, H. A., “Access to Journals”, 1998HiA....11..929A ADS Abt, H. A.: 2003b, Foreword, Vol. 290, vii 2003ASSL..290D...7A ADS Abt, H. A., Tan, H., & Zhou, H., “Disks that appear and disappear around Abt, H. A.: 2003c, Scientific Impact of Small Telescopes, Vol. 287, 55–64 rapidly rotating A-type stars”, 1998ASPC..138....3A ADS 2003ASSL..287...55A ADS Abt, H. A., Tan, H., & Zhou, H., “Hot Inner Disks that Appear and Disappear Abt, H. A.: 2003d, Changes in Astronomical Publications During the 20th Cen- Around Rapidly Rotating A-Type Dwarfs”, 1997ApJ...487..365A ADS tury, Vol. 285, 127 2003ASSL..285..127A ADS Abt, H. A., “Access to Journals”, 1997IAUJD..20E..31A ADS Abt, H., “Spectra Comparators”, 2003gafe.conf..123A ADS Abt, H. A. & Corbally, C. J., “The Maximum Ages of Trapezium Systems”, Abt, H., “Solving Olin Wilson’s Mystery”, 2003gafe.conf...47A ADS 1997ASSL..223..127A ADS Abt, H. A., “Post-Main-Sequence Changes in Rotational Velocities”, Abt, H. A. & Willmarth, D. W., “How do Binaries in Clusters Change with 2003ApJ...582..420A ADS Age?”, 1997ASPC..130..117A ADS Abt, H. A., Levato, H., & Grosso, M., “Rotational velocities of B stars”, Abt, H. A., “How Long Are Astronomical Papers Remembered?”, 2003ASSL..298..165A ADS 1996PASP..108.1059A ADS Abt, H. A., “How to write a good astronomical paper”, Abt, H. A., “HD 105262, A Newly-Discovered HR 4049 Star with a Large Proper 2002PABei..20..299A ADS Motion”, 1996PASP..108..844A ADS Abt, H. A., “The Production and Distribution Times for Conference Proceed- Abt, H. A., “Announcement: additional scientific editors.”, ings”, 2002BAAS...34.1354A ADS 1996ApJ...466..603A ADS Abt, H. A., Levato, H., & Grosso, M., “Rotational Velocities of B Stars”, Abt, H. A., “Announcement: faster publication times for electronic manuscripts 2002ApJ...573..359A ADS and other changes.”, 1996ApJ...465....1A ADS , “Solving Olin Wilson’s Mystery 2002PASP..114..559A Abt, H. A. ”, ADS Abt, H. A. & Zhou, H., “What Fraction of Astronomers Become Relatively Inac- Abt, H. A., Levato, H., & Grosso, M., “Rotational Velocities of B Stars”, tive in Research after Receiving Tenure?”, 1996PASP..108..375A ADS 2002RMxAC..14..111A ADS Abt, H. A. & Morrell, N. I., “VizieR Online Data Catalog: A-type stars rotation Abt, H. A., “The Productivity of Ground-Based Optical Telescopes of Various and spectral peculiarities (Abt+ 1995)”, 1996yCat..20990135A ADS Apertures”, 2001AAS...19914501A ADS Abt, H. & Levato, H., “Informe sobre el avance del proyecto de determina- Abt, H. A. & Stevens-Rayburn, S., “Publication Statistics for Recent Papers ciones de V sen i para todas las estrellas B más brillantes que 6.5 mag.”, from the Hubble Space Telescope”, 2001BAAS...33..935A ADS 1996BAAA...40...24A ADS Abt, H. A., “Are Stellar Rotational Axes Distributed Randomly?”, Abt, H. A. & Willmarth, D. W., “Observational Evidence of Binary Evolution 2001AJ....122.2008A ADS 1996ASPC...90..105A Abt, H. A., “Are Stellar Rotational Axes Oriented Randomly?”, in Open Clusters”, ADS 2001AAS...198.4708A ADS Abt, H. A., “Keynote Address: Questions for the Present and Future”, 1996ASPC...90...15A Abt, H. A., “Electronic access to journals”, 2001IAUGA..24..354A ADS ADS Abt, H. A.: 2001d, Comments on Refereeing, Vol. 266, 197 Barnes, J., Abt, H. A., Avrett, E. H., Dalgarno, A., & Hodge, P., “What Happens 2001ASSL..266..197A ADS to My Electronic Manuscript Submission to the AAS-affiliated Journals?”, Abt, H. A., “Does Rotation Alone Determine Whether an A-Type Star’s Spec- 1996AAS...187.3806B ADS trum Is Abnormal or Normal?”, 2000ApJ...544..933A ADS Abt, H. A., “Some Statistical Highlights of the Astrophysical Journal”, Abt, H. A., “Astronomical Publication in the Near Future”, 1995ApJ...455..407A ADS 2000PASP..112.1417A ADS Abt, H. A., “Obituary - Chandrasekhar, Subrahmanyan 1910-1995 Managing Abt, H. A.: 2000c, What Can We Learn from Publications Studies?, Vol. 256, Editor - 1952-1971”, 1995ApJ...454..551A ADS 77 2000ASSL..256...77A ADS Abt, H. A. & Morrell, N. I., “The Relation between Rotational Velocities and Abt, H. A. & Corbally, C. J., “The Maximum Age of Trapezium Systems”, Spectral Peculiarities among A-Type Stars”, 1995ApJS...99..135A ADS 2000ApJ...541..841A ADS Abt, H. A., “Some Highlights of the Astrophysical Journal”, Abt, H. A., “The Most Frequently Cited Astronomical Papers Published During 1995AAS...186.1403A ADS the Past Decade”, 2000BAAS...32..937A ADS Abt, H. A., “Changing Sources of Published Information”, Abt, H. A. & Willmarth, D. W.: 2000, Completion of a Survey 1995PASP..107..401A ADS for Disk Lines Around Rapidly-Rotating A Stars, NOAO Proposal Abt, H. A. & Willmarth, D. W., “First Radial Velocities for 146 Bright F- and 2000noao.prop...56A ADS G-Type Stars”, 1994ApJS...94..677A ADS Abt, H., Levato, H., & Grosso, M., “A redetermination of the projected axial ro- Abt, H. A., “The Current Burst in Astronomical Publications”, tational velocities for the northern - B-type stars of the Bright Star Catalogue 1994PASP..106.1015A ADS b We have redetermined with a resolution of 0.21 Å /px, the V sin i values Abt, H. A., “Announcement - the Centennial Challenge”, of 1060 B-type stars of the northern hemisphere brighter than V = 6.5. We 1994ApJ...430..445A ADS have also included some southern objects to the north of -31 degees for over- Abt, H. A., “Institutional Productivities 1993”, 1994PASP..106..107A ADS lapping with the southern survey which is underway. The V sin i values were Abt, H. A., “Report of IAU Commission 26: Double and multiple stars (Etoiles derived by comparison with standard stars in the Slettebak system and we doubles et multiples).”, 1994IAUTA..22..239A ADS have used for such purpose 4471 and 4481 lines from HeI and MgII respec- Abt, H. A., “MK Spectra of the Bright A-Type Stars”, 1994ASPC...60...99A tively. We have also measured the equivalent widths of the lines. A statistical ADS analysis will follow.”, 2000BAAA...44...43A ADS Abt, H. A., “Obituary: Goro Ishida, 1924-1992”, 1993BAAS...25.1497A Schmidt-Kaler, T. & Abt, H. A., “Book Review: The Astrophysi- ADS cal Journal; American Astronomical Society Centennial Issue (Abt)”, Abt, H. A., “Institutional Productivities”, 1993PASP..105..794A ADS 2000AcHA...10..232S ADS Abt, H. A., “The Growth of Multiwavelength Astrophysics”, Abt, H. A. & Willmarth, D. W.: 2000, Does rotation alone determine 1993PASP..105..437A ADS whether an A-type star’s spectrum is abnormal or normal?, Vol. 254, 175 Abt, H. A., “Announcement - E-Mail Addresses”, 1993ApJ...406..359A 2000ASSL..254..175A ADS ADS Abt, H. A., “Do Important Papers Produce High Citation Counts?”, Abt, H. A., “Announcement - Proposed Cd-Rom Series”, 1999AAS...19513001A ADS 1993ApJ...402....1A ADS Abt, H. A. & Willmarth, D. W., “Binaries in the Praesepe and Coma Star Clus- Abt, H. A. & Morrell, N. I., “Rotational Velocities for the Brighter A-Type ters and Their Implications for Binary Evolution”, 1999ApJ...521..682A Stars”, 1993ASPC...44..384A ADS ADS Abt, H. A., “Astronomical Publications”, 1993ASPC...38..466A ADS Abt, H. A., “Announcement: New Editor-In Robert C. Kennicutt”, Abt, H. A. & Corbally, C. J., “CCD Observations of Possible Trapezium Sys- 1999ApJS..122.....A ADS tems”, 1993ASPC...38...72A ADS

2 Morrell, N. & Abt, H. A., “Spectroscopic Binaries in the alpha Persei Cluster”, Abt, H. A., “MK classification of the brighter Praesepe stars.”, 1992ApJ...393..666M ADS 1986PASP...98..307A ADS Abt, H. A., “The Astrophysical Journal Videotapes”, 1992ApJ...393....1A Willmarth, D. & Abt, H. A., “The Binary Frequency Among Weak-Lined ADS Dwarfs”, 1986BAAS...18..681W ADS Abt, H. A., “What Fraction of Literature References Are Incorrect?”, Abt, H. A., “An Assessment of Research done at the National Optical Observa- 1992PASP..104..235A ADS tories”, 1985PASP...97.1050A ADS Abt, H. A., “Closing Comments”, 1992dpas.conf..223A ADS Abt, H. A. & Levy, S. G., “Improved study of metallic-line binaries.”, Abt, H. A., “American On-Line Publication Tests and Long-Range Plans”, 1985ApJS...59..229A ADS 1992dpas.conf...47A ADS Abt, H. A., “Visual multiples. VIII. 1000 MK types.”, 1985ApJS...59...95A Abt, H. A. & Willmarth, D. W., “Duplicity Among Solar-Type Stars”, ADS 1992ASPC...32...82A ADS Abt, H. A., “The spectra and ages of blue stragglers.”, Abt, H. A., “A noteworthy occasion”, 1991Obs...111..251A ADS 1985ApJ...294L.103A ADS Krisciunas, K., Skillman, D. R., Guinan, E. F., & Abt, H. A., “Further Observa- Abt, H. A., “Metallic Line Binaries”, 1985srv..conf..275A ADS tions of 9 Aurigae”, 1991IBVS.3672....1K ADS Willmarth, D. W. & Abt, H. A., “Radial Velocities from CCD Detectors”, Morrell, N. & Abt, H. A., “Reinvestigation of the Binary Frequency in the Open 1985srv..conf...99W ADS Cluster IC 4665”, 1991ApJ...378..157M ADS Abt, H. A., “Spectroscopic tests of photoelectric stellar classification of abnor- Abt, H. A., “Science Citation and Funding”, 1991Sci...251.1408A ADS mal stars.”, 1984ApJ...285..247A ADS Abt, H. A., “Publication Practices in Various Sciences”, Abt, H. A. & Cardona, O., “Be stars in binaries.”, 1984ApJ...285..190A 1991BAAS...23..961A ADS ADS Latham, D. W., Mazeh, T., Davis, R. J., Stefanik, R. P., & Abt, H. A., “A Search Abt, H. A., “Citations to Single and Multiauthored Papers”, for Wide Binaries at the North Galactic Pole using Precise Radial Velocities”, 1984PASP...96..746A ADS 1991AJ....101..625L ADS Jacobsen, T. S., Wallerstein, G., & Abt, H. A., “Additional radial velocities of Boyce, P. B., Beichman, C. A., Abt, H. A., et al.: 1991, Status of the profession, the Cepheid binary W Sagittarii.”, 1984PASP...96..630J ADS Astronomy and Astrophysics Panel Reports 1991aap..rept.....B ADS Abt, H. A., “Citations to Federally-Funded and Unfunded Research”, Abt, H. A., Wang, R., & Cardona, O., “Spectroscopic Binaries in the Orion 1984PASP...96..563A ADS Nebula Cluster”, 1991ApJ...367..155A ADS Abt, H. A., “The Occurence of Peculiar Stars in Clusters and Visual Systems”, Abt, H. A., “Editorial - Changes to the Volume Index”, 1984mpsc.conf..369A ADS 1991ApJ...366..341A ADS Abt, H. A., “Discovery of λ Bootis Stars”, 1984mpsc.conf..340A ADS Morrell, N. I. & Abt, H. A., “A Search for Binaries in Two Open Clusters”, Abt, H. A. & Cardona, O., “The nature of the visual companions of AP and AM 1991ASPC...13..433M ADS stars.”, 1984ApJ...276..266A ADS Abt, H. A., “Publication Characteristics of Members of the AAS”, Abt, H. A., Bollinger, G., & Burke, E. W., J., “HD 164615 : A probable spotted 1990PASP..102.1161A ADS single F type star.”, 1983ApJ...272..196A ADS Abt, H. A., Gomez, A. E., & Levy, S. G., “The Frequency and Formation Mech- Abt, H. A. & Cardona, O., “Confirmation among visual multiples of an increase 1990ApJS...74..551A anism of B2–B5 Main-Sequence Binaries”, ADS of AP stars with age.”, 1983ApJ...272..182A ADS Abt, H. A., “Editorial - Style Changes for Most Astronomical Journals”, Abt, H. A., “At what Ages did Outstanding American Astronomers Publish Their 1990ApJ...357....1A ADS Most-Cited Papers”, 1983PASP...95..113A ADS Abt, H. A., “Refereed Conference Papers - Editorial”, Abt, H. A., “Accuracy of spectral classification”, 1983LowOB...9..118A 1990ApJ...354....1A ADS ADS Abt, H. A., “Trends Toward Internationalization in Astronomical Literature”, Abt, H. A., “Normal and abnormal binary frequencies.”, 1990PASP..102..368A ADS 1983ARA&A..21..343A ADS Abt, H. A., “Editorial - Instrumentation Papers”, 1989ApJ...346....1A Gomez, A. E. & Abt, H. A., “A search for secondary lines in the visual spectra ADS of 55 binaries.”, 1982PASP...94..650G ADS Abt, H. A. & Liu, J., “Journal Referencing”, 1989PASP..101..555A ADS Abt, H. A., “The Future of Astronomical Literature”, 1989lisa.conf...37A Abt, H. A., “Statistical Publication Histories of American Astronomers”, 1982PASP...94..213A ADS ADS 1982AASPB..31....3A Mitton, S., Abt, H., Wilkins, G. A., & Jaschek, C. O., “Developments in primary Abt, H. A., “William C. Miller (1910-1981).”, ADS publishing:”, 1989HiA.....8.....M ADS Morgan, W. W., Abt, H. A., Tapscott, J. W., & Andrews, P. J., “Book- Abt, H. A., “Growth Rates in Various Fields of Astronomy”, Review - Revised MK Spectral Atlas for Stars Earlier than the Sun”, 1988PASP..100.1567A ADS 1981Obs...101..217M ADS Abt, H. A., “Maximum Separations among Cataloged Binaries”, Abt, H. A., “Editorial”, 1981ApJ...249....1A ADS 1988ApJ...331..922A ADS Abt, H. A., “Some Trends in American Astronomical Publications”, Abt, H. A. & Dalgarno, A., “Editorial - Name Change - Letters”, 1981PASP...93..269A ADS 1988ApJ...328L...1A ADS Abt, H. A., “Long-Term Citation Histories of Astronomical Papers”, Abt, H. A., “What Happens to Rejected Astronomical Papers?”, 1981PASP...93..207A ADS 1988PASP..100..506A ADS Abt, H. A., “Visual multiples. VII. MK classifications.”, Abt, H. A., “Visual binary separations as functions of primary types, ages, and 1981ApJS...45..437A ADS locations”, 1988Ap&SS.142..111A ADS Morgan, W. W., Keenan, P. C., Abt, H. A., & Tapscott, J. W., “Some aspects of Abt, H. A., “Interacting Am binaries.”, 1988covp.conf....1A ADS the spectroscopic behavior of the stars of highest luminosity in the region of Abt, H. A., “Erratum - Reference Frequencies in Astronomy and Related Sci- the Hertzsprung gap.”, 1981ApJ...243..894M ADS ences”, 1988PASP..100..156A ADS Abt, H. A., “Palomar Sky Survey Overlay Maps and Infrared Milky way Survey”, Abt, H. A., “Frequency of Binary Stars”, 1987S&T....74..573A ADS 1981KPNON..18....4A ADS Abt, H. A., “Reference Frequencies in Astronomy and Related Sciences”, Abt, H. A., “Visual multiples. VI. BET 1269, a system containing abnormal 1987PASP...99.1329A ADS stars.”, 1980PASP...92..796A ADS Abt, H. A. & Willmarth, D. W., “The Binary Frequency of High-Velocity Field Abt, H. A., “Are binaries concentrated toward the centers of open clusters?”, Dwarfs as Obtained with CCD Measures”, 1987ApJ...318..786A ADS 1980ApJ...241..275A ADS Young, A., Mielbrecht, R. A., & Abt, H. A., “Duplicity among Stars Abt, H. A., Sanwal, N. B., & Levy, S. G., “Visual multiples. V. Radial velocities with Strong Chromospheric CA II Emission Lines: A Statistical Survey”, of 160 systems.”, 1980ApJS...43..549A ADS 1987ApJ...317..787Y ADS Abt, H. A., “The Cost-Effectiveness in Terms of Publications and Citations Abt, H. A., “Implications for Solar-Type Binary Statistics of the Morbey-Griffin of Various Optical Telescopes at the Kitt-Peak”, 1980PASP...92..249A Improved Binary Analysis”, 1987ApJ...317..353A ADS ADS Abt, H. A., “Are Papers by Wellknown Astronomers Accepted for Publication Abt, H. A., “Kitt Peak seeing”, 1980PASP...92..103A ADS More Readily than Other Papers”, 1987PASP...99..439A ADS Abt, H. A., Perry, C. L., Olsen, E. H., & Grauer, A. D., “A small cluster near IC Abt, H. A., “Galactic Distribution, Kinematics, Locations in Clusters 1805.”, 1980PASP...92...60A ADS and H-R Diagrams, and Duplicity of STARS Stars (review Paper)”, Abt, H., “The Cost-Effectiveness of Telescopes of Various Apertures”, 1987pbes.coll..470A ADS 1980oits.conf..609A ADS Abt, H. A., “Spectral Classification of Weak-lined Stars Discovered Photomet- Abt, H. A., “The frequencies of binaries on the main sequence.”, rically”, 1986ApJ...309..260A ADS 1979AJ.....84.1591A ADS Abt, H. A., “The Ages and Dimensions of Trapezium Systems”, Abt, H. A., “The occurence of abnormal stars in open clusters.”, 1986ApJ...304..688A ADS 1979ApJ...230..485A ADS

3 Abt, H. A., Brodzik, D., & Schaefer, B., “Spectral types of stars with unusual Abt, H. A., “Rotational velocities of marginal metallic-line stars.”, photometric indices.”, 1979PASP...91..176A ADS 1975ApJ...195..405A ADS Abt, H. A., “The Forthcoming Morgan-Abt Spectral Atlas”, Joy, A. H. & Abt, H. A., “Spectral Types of M Dwarf Stars”, 1979RA...... 9..477A ADS 1974ApJS...28....1J ADS Abt, H., “The Occurrence of Abnormal Stars in Open Clusters”, Burke, Edward W., J. & Abt, H. A., “The Ellipsoidal System BD +56 deg2190”, 1979RA...... 9...95A ADS 1974PASP...86..677B ADS Abt, H. A., “Editorial”, 1979ApJ...227..359A ADS Abt, H. A. & Levy, S. G., “Period Variation of the Cepheid Zeta Geminorum”, Abt, H. A., “Spectral types in Gurzadyan’s clustering in Auriga.”, 1974ApJ...188L..75A ADS 1978PASP...90..555A ADS Abt, H. A. & Levy, S. G., “Reinvestigation of certain long-period A-type bina- Abt, H. A., “Editorial: Increased Costs”, 1978ApJS...38...87A ADS ries.”, 1974ApJ...188..291A ADS Abt, H. A., “The Frequencies of Binaries on the Main Sequence”, Abt, H. A., “Catalog of Individual Radial Velocities, 12h-24ˆ h,ˆ Measured by 1978BAAS...10Q.607A ADS Astronomers of the Mount Wilson Observatory”, 1973ApJS...26..365A Levato, H. & Abt, H. A., “Spectral types in the Ursa Major stream.”, ADS 1978PASP...90..429L ADS Abt, H. A. & Levy, S. G., “Visual multiples. I. ADS 7251”, Abt, H. A., “Radial velocities of the cepheid X Cygni.”, 1973AJ.....78.1093A ADS 1978PASP...90..309A ADS Abt, H. A. & Sanders, W. L., “A spectroscopic study of the open cluster M39.”, Abt, H. A. & Levato, H., “Spectral types in the Pleiades.”, 1973ApJ...186..177A ADS 1978PASP...90..201A ADS Abt, H. A., “Editorial on Growth of the Astrophysical Journal”, Abt, H. A. & Levy, S. G., “Evidence for the duplicity of the anomalous cepheid 1973ApJ...185..737A ADS Y Ophiuchi.”, 1978PASP...90..188A ADS Abt, H. A., “Editorial”, 1973ApJ...184L..45A ADS Abt, H. A. & Levy, S. G., “Binaries among B2 - B5 IV, V absorption and emis- Abt, H. A. & Levy, S. G., “Supergiant binaries in the h and chi Persei associa- sion stars.”, 1978ApJS...36..241A ADS tion.”, 1973ApJ...184..167A ADS Morgan, W. W., Abt, H. A., & Tapscott, J. W.: 1978, Revised MK Spectral Atlas Abt, H. A. & Moyd, K. I., “Rotation and shell spectra among A-type dwarfs.”, for stars earlier than the sun 1978rmsa.book.....M ADS 1973ApJ...182..809A ADS Abt, H. A., “The Binary Frequency Along the Main Sequence”, Morgan, W. W. & Abt, H. A., “On the metallicity of the main-sequence stars in 1978prpl.conf..323A ADS M67.”, 1973AJ.....78..386M ADS Abt, H. A. & Levato, H., “The Occurrence of Peculiar Stars in Open Clusters”, Abt, H. A., “Introductory Remarks on Spectroscopic Parameters”, 1978IAUS...80..155A ADS 1973JRASC..67...73A ADS Abt, H. A. & Levato, H., “Spectral types in the Orion OB1 association.”, Abt, H. A. & Snowden, M. S., “The Binary Frequency for AP Stars”, 1977PASP...89..797A ADS 1973ApJS...25..137A ADS Abt, H. A., “Editorial Concerning Page Charges and Subscription Rates”, Abt, H. A.: 1973a, Catalog of individual radial velocities, 12h - 24h, measured 1977ApJS...35..127A ADS by astronomers of the Mount Wilson Observatory 1973cirv.book.....A Abt, H. A. & Levato, H., “Spectral types in the open cluster M34.”, ADS 1973Mercu...2....9A 1977PASP...89..648A ADS Abt, H. A., “A. H. Joy (1882 - 1973)”, ADS , “Editorial 1973ApJ...179..679A Abt, H. A., “Spectral Types in the Open cluster NGC 2169”, Abt, H. A. ”, ADS Abt, H. A., Chaffee, F. H., & Suffolk, G., “Rotational Velocities of AP Stars”, 1977PASP...89..646A ADS 1972ApJ...175..779A ADS Abt, H. A., “Editorial Concerning Page Charges and Subscription Rates”, Abt, H. A. & Wisniewski, W. Z., “Radial Velocity of RR Lyrae Variable RW 1977ApJ...217....1A ADS Ari”, 1972IBVS..697....1A ADS Levato, H. & Abt, H. A., “Spectral types in the open cluster NGC 6633.”, Abt, H. A. & Morgan, W. W., “The H-R Diagram of the Open Cluster IC 2602”, 1977PASP...89..274L ADS 1972ApJ...174L.131A ADS Abt, H. A., “Multiplicity of Solar-Type Stars”, 1977RMxAA...3...47A ADS Abt, H. A., “Editorial.”, 1972ApJ...172..527A ADS , “A search for a third star in the Cygnus Abt, H. A., Hintzen, P., & Levy, S. G. Abt, H. A. & Levy, S. G., “Spectroscopic Binaries in the Open Cluster NGC X-1 system. 1977ApJ...213..815A ”, ADS 2516.”, 1972ApJ...172..355A ADS 1977SciAm.236d..96A Abt, H. A., “The companions of sunlike stars.”, Abt, H. A., Levy, S. G., & Gandet, T. L., “Radial velocities of 65 early-type ADS stars.”, 1972AJ.....77..138A ADS Abt, H. A. & Levy, S. G., “The spectroscopic binary HR 1300.”, Abt, H. A., Bolton, C. T., & Levy, S. G., “IC 4665, a Cluster of Binaries”, 1977PASP...89..185A ADS 1972ApJ...171..259A ADS Abt, H. A. & Levato, H., “Spectral types in the Coma Berenices cluster.”, Morgan, W. W. & Abt, H. A., “The spectral classification of the F stars of 1977PASP...89...29A ADS intermediate luminosity.”, 1972AJ.....77...35M ADS Abt, H. A. & Morgan, W. W., “Addendum: MK Morphology of a Group of AM Abt, H. A. & Biggs, E. S.: 1972, Bibliography of stellar radial velocities Stars”, 1976ApJ...209..961A ADS 1972bsrv.book.....A ADS Levato, H. & Abt, H. A., “Spectral types in the Orion nebula cluster.”, Abt, H. A. & Levy, S. G., “The Radial Velocity of 60 Serpentis”, 1976PASP...88..712L ADS 1971PASP...83..687A ADS Abt, H. A. & Levy, S. G., “The Frequency of Binaries Among Absorption and Abt, H. A. & Hudson, K. I., “Rotational Velocities in Short-Period A-Type Bi- Emission B2-B5 IV or V Stars.”, 1976BAAS....8Q.521A ADS naries”, 1971ApJ...163..333A ADS Abt, H. A. & Levy, S. G., “The cause of the light variation in the metallic-line Abt, H. A., Muncaster, G. W., & Thompson, L. A., “Rotational Velocities in the star HR 976.”, 1976PASP...88..487A ADS Orion Nebula Cluster”, 1970AJ.....75.1095A ADS Abt, H. A. & Levy, S. G., “Visual multiples. III. ADS 11745 (beta Lyrae group).”, Abt, H. A., Jennings, M., Lee, P. D., & Villere, K. R., “Mean Velocities of 1976AJ.....81..659A ADS Binaries in the Perseus Arm”, 1970ApJ...161..477A ADS Abt, H. A., Landolt, A. U., Levy, S. G., & Mochnacki, S., “Visual multiples. II. Geary, J. C. & Abt, H. A., “Rotational velocities in the Ursa Major group.”, The gamma Velorum group.”, 1976AJ.....81..541A ADS 1970AJ.....75..718G ADS Abt, H. A. & Levato, H., “Spectral types in the open cluster M39.”, Abt, H. A., Lee, P. D., & Perry, C. L., “The Metal-Deficient Binary HR 8899”, 1976PASP...88..222A ADS 1970PASP...82..716A ADS Levato, H. & Abt, H. A., “Spectral types in the Lacerta OB1 association.”, Abt, H. A. & Levy, S. G., “Spectra of the Cepheid HR 8157”, 1976PASP...88..141L ADS 1970PASP...82..334A ADS Griffin, R. F. & Abt, H. A., “Radial-velocity measurements of the lunar- Abt, H. A., Levy, S. G., Baylor, L. A., et al., “The Frequency of Spectroscopic occultation binary HR 2013”, 1976Obs....96...54G ADS Binaries in NGC 6475”, 1970ApJ...159..919A ADS Abt, H. A. & Morgan, W. W., “MK morphology of a group of Am stars.”, Abt, H. A., “Stellar Rotation in Open Clusters (review Paper)”, 1976ApJ...205..446A ADS 1970stro.coll..193A ADS Abt, H. A. & Levy, S. G., “Multiplicity among solar-type stars.”, Abt, H. A. & Golson, J. C., “Photometry and radial velocities of W Serpentis.”, 1976ApJS...30..273A ADS 1970IBSH...16...35A ADS Abt, H. A. & Levato, H., “Spectral types in the open cluster IC 4665.”, Abt, H. A., “Catalog of Indidual Radial Velocities, 0h-12h, Measured by As- 1975PASP...87..849A ADS tronomers of the Mount Wilson Observatory”, 1970ApJS...19..387A Abt, H., “Announcement from the Editor”, 1975ApJ...202..562A ADS ADS Abt, H. A., “Spectral types in the open cluster NGC 6475.”, Abt, H. A. & Bidelman, W. P., “Spectral Classification of A-Type Spectroscopic 1975PASP...87..417A ADS Binaries”, 1969ApJ...158.1091A ADS Abt, H. A. & Levy, S. G., “The Binary Frequency Among Solar-Type Stars.”, Abt, H. A., Clements, A. E., Doose, L. R., & Harris, D. H., “Rotational velocities 1975BAAS....7..268A ADS in NGC 2516.”, 1969AJ.....74.1153A ADS

4 Fisk, R. S. & Abt, H. A., “The Spectroscopic Binary HD 206874”, Abt, H. A.: 1963b, Intrinsic Variable Stars, 119 1963paa..book..119A 1969PASP...81..692F ADS ADS Abt, H. A. & Levy, S. G., “The frequency of spectroscopic binaries among Abt, H. A. & Hunter, James H., J., “Stellar Rotation in Galactic Clusters.”, high-velocity dwarf stars.”, 1969AJ.....74..908A ADS 1962ApJ...136..381A ADS Abt, H. A. & Smith, G. H., “Accuracies of Radial-Velocity Measurements”, Abt, H. A. & Golson, J. C., “Interstellar Absorption in the North Equatorial 1969PASP...81..332A ADS Polar Region.”, 1962ApJ...136..363A ADS Abt, H. A., Dukes, R. J., & Weaver, W. B., “12 Cam., Calcium emission in giant Abt, H. A. & Golson, J. C., “Colors and Variability of Magnetic Stars.”, 1962ApJ...136...35A binaries.”, 1969ApJ...157..717A ADS ADS Abt, H. A., Jeffers, H. M., Gibson, J., & Sandage, A. R., “The Visual Multiple Abt, H. A. & Morgan, W. W., “The H-R diagram of NGC 2516.”, System Containing Beta Lyrae.”, 1962ApJ...135..429A ADS 1969AJ.....74..813A ADS Abt, H. A., “Non-Periodic Spectroscopic Changes in Beta Lyrae.”, Abt, H. A. & Levy, S. G., “The Spectroscopic Binary 66 Andromedae”, 1962ApJ...135..424A ADS 1969PASP...81..280A ADS Abt, H. A., “Rotational Velocities in Galactic Clusters.”, Abt, H. A. & Jewsbury, C. P., “Rotational Velocities in the Open Cluster NGC 1962AJ.....67Q.267A ADS 6475 (M7)”, 1969ApJ...156..983A ADS Abt, H. A., “Observations of the Variable Star Tau Cygni.”, Abt, H. A., “Radial velocity of the stars”, 1969stas.conf...99A ADS 1961ApJ...134.1013A ADS Abt, H. A., “Summary”, 1969BAAS....1..164A ADS Abt, H. A., “Radial Velocities of Three Metallic-Line Stars.”, Abt, H. A., “Introductory Remarks”, 1969BAAS....1..141A ADS 1961ApJ...133..910A ADS Abt, H. A., “Research Possibilities with Moderate Dispersion”, Abt, H. A., “The Frequency of Binaries among Metalmc-Line Stars.”, 1968PASP...80..637A ADS 1961ApJS....6...37A ADS Abt, H. A., Conti, P. S., Deutsch, A. J., & Wallerstein, G., “The Mass and Other Abt, H., “The Frequency of Binaries among A-Type Stars.”, Characteristics of the Magnetic Star HD 98088”, 1968ApJ...153..177A 1961AJ.....66Q.277A ADS Abt, H. A., “The Visual Multiple-star System Containing β Lyrae”, ADS 1960PASP...72..348A ADS Abt, H. A., “Award of the Bruce Gold Medal to Professor Willem J. Luyten”, Abt, A. & Hardie, R. H., “The 1.3-DAY Variable BL Herculis.”, 1968PASP...80..247A ADS 1960ApJ...131..155A ADS Abt, H. A., Meinel, A. B., Morgan W. W., & Tapscott I. W.: 1968, An Atlas of Abt, H. A., “The Spectra of Two High-Lattitude Supergiants.”, low-dispersion grating stellar spectra 1968aald.book.....A ADS 1960ApJ...131...99A ADS Abt, H. A. & Levy, S. G., “Frequency of Spectroscopic Binaries among High- Abt, H. A. & Golson, J. C., “Light and Color Measures of Magnetic Stars.”, Velocity Stars.”, 1968AJS....73R.161A ADS 1960AJ.....65R.481A ADS Abt, H. A., Chaffee, F. H., & Suffolk, G., “Rotational Velocities of AP Stars.”, Abt, H. A., “A New Radial-Velocity for the Cepheid SU Cassiopeiae.”, 1967AJ.....72R.783A ADS 1959ApJ...130.1021A ADS Abt, H. A., “Award of the Bruce Gold Medal to Professor Ludwig Biermann”, Abt, H. A., “Wesselink’s Method and Shock Waves in RR Lyrae.”, 1967PASP...79..197A ADS 1959ApJ...130..824A ADS Abt, H. A. & Chaffee, F. H., “Rotational Velocities of Stars in IC 4665”, Abt, H. A., “The Cepheid Binary FF Aquilae.”, 1959ApJ...130..769A 1967ApJ...148..459A ADS ADS Abt, H. A. & van Biesbroeck, G., “The Visual Companion of RW Tauri”, Abt, H. A., “Duplicity and Rotation Among Am, Ap, and A Stars”, 1959PASP...71..345A ADS 1967mrs..conf..173A ADS Grant, G. & Abt, H. A., “Photoelectric Photometry of an Outburst of SS Cygni.”, Abt, H. A., “Recent Work on Radial Velocities in Nearby Clusters”, 1959ApJ...129..323G ADS 1967IAUS...30..159A ADS Grant, G. & Abt, H. A., “Photoelectric Observations of the 1955-1956 Eclipse Abt, H. A., “Two Radial Velocity Catalogues”, 1967IAUS...30...55A ADS of Zeta Aurigae.”, 1959ApJ...129..320G ADS Abt, H. A. & Chaffee, F. H., “Rotational Velocities in the Galactic Cluster IC Abt, H. A. & Hiltner, W. A., “A New 16-Inch Reflector at Yerkes Observatory”, 4465”, 1966PASP...78Q.438A ADS 1958PASP...70..414A ADS Abt, H. A., Osmer, P. S., & Kraft, R. P., “Atmospheric Characteristics Abt, H. A., “A Spectroscopic Binary in the Pleiades.”, of a Cepheid of Unusually Large Light Amplitude: TV Camelopardalis”, 1958ApJ...128..139A ADS 1966ApJ...145..479A ADS Abt, H. A., “Line Broadening in High-Luminosity Stars. II. Less Luminous Su- Abt, H. A. & Golson, J. C., “On the separation by Balmer-line pho- pergiants.”, 1958ApJ...127..658A ADS tometry of high and low luminosity stars having H-alpha in emission.”, Abt, H. A., “Line Broadening in High-Luminosity Stars. I. Bright Giants.”, 1966ApJ...143..306A ADS 1957ApJ...126..503A ADS Abt, H. A., Morgan, W. W., & Strömgren, B., “A Description of Certain Galactic Abt, H. A., Conti, P. S., Deutsch, A. J., & Wallerstein, G., “Mass of a magnetic 1957ApJ...126..322A 1966AJ.....71Q.843A Nebulosities. II.”, ADS star.”, ADS Abt, H. A., “The Variability of Supergiants.”, 1957ApJ...126..138A ADS Abt, H. A., Osmer, P. S., & Kraft, R. P., “Atmospheric Characteristics of a Thomsen, I. L., Abt, H. A., & Kron, G. E., ““Distortions” in the Light-Variation Cepheid of Unusually Large Light Amplitude.”, 1966AJ.....71Q.377A of the Spectroscopic Binary HD 22124”, 1955PASP...67..412T ADS ADS Abt, H. A., “Spectroscopic Observations of the Cluster-Type Variable VZ CAN- Abt, H. A., “The metallic-line stars”, 1966VA...... 8...75A ADS CRI.”, 1955ApJ...122..390A ADS Abt, H. A., Barnes, R. C., Biggs, E. S., & Osmer, P. S., “The Frequency of Abt, H. A., “The Spectrum of Nova Sagittarii 1954.1.”, Spectroscopic Binaries in the Pleiades.”, 1965ApJ...142.1604A ADS 1955ApJ...122..199A ADS Abt, H. A., “Spectrographic Measures of the Eclipsing System BH Virginis”, Abt, H. A., “Studies of RV Tauri Stars. I. U Monocerotis”, 1965PASP...77..367A ADS 1955ApJ...122...72A ADS Abt, H. A., “The Frequency of Binaries among Normal A-Type Stars.”, Abt, H. A., “The Atmosphere of AN RV Tauri Variable”, 1965ApJS...11..429A ADS 1955stat.conf..158A ADS Abt, H. A., “The Frequency of Spectroscopic Binaries in the Pleiades”, Abt, H. A., “V 367 Cygni : an Eclipsing Binary with a Shell Spectrum”, 1954PASP...66..171A 1965PASP...77..121A ADS ADS Abt, H. A., “Abstract: An Analysis of W Virginis.”, 1954ApJ...119..469A Abt, H. A. & Osmer, P. S., “Filter Transmission Effects on Pho- ADS toelectric Measures of Rotationally Broadened Hβ Line Strenghts.”, Abt, H. A., “The Luminosity of the Cepheid Y Ophiuchi”, 1965ApJ...141..949A ADS 1954PASP...66...65A ADS Abt, H. A., Barnes, R. C., Biggs, E. S., & Osmer, P. S., “The Frequency of Abt, H. A., “An Analysis of W Virginis.”, 1954ApJS....1...63A ADS Spectroscopic Binaries in the Plejades.”, 1965AJ.....70R.317A ADS Wilson, O. C. & Abt, H. A., “Chromospheric Structure of the K-Type Component Abt, H. A., “Erratum: Colors and Variability of Magnetic Stars.”, of Zeta Aurigae.”, 1954ApJS....1....1W ADS 1964ApJ...140.1641A ADS Abt, H. A., “Radial Velocity and Spectrum of HD 98088”, Abt, H. A. & Snowden, M. S., “The Galactic Cluster IC 4665.”, 1953PASP...65..274A ADS 1964ApJ...139.1139A ADS Abt, A., “An analysis of W Virginis.”, 1952AJ.....57..158A ADS Abt, H. A. & Bautz, L. P., “Stellar Radial Velocities in the Perseus Arm.”, Abt, A., “Hyperfine Structure in the Solar Spectrum”, 1952ApJ...115..199A 1963ApJ...138.1002A ADS ADS Abt, H. A.: 1952c, “An analysis of the variable star, W Virginis”„ Ph.D. thesis, Abt, H. A., “Stellar Radial Velocities in the Perseus Arm.”, California Institute of Technology 1952PhDT...... 13A ADS 1963AJ.....68R.271A ADS Wilson, O. C. & Abt, A., “The Of-Type Spectroscopic Binary BD+40 deg4220.”, Abt, H. A. & Kallarakal, V. V., “The Multiple System 1 Geminorum.”, 1951ApJ...114..477W ADS 1963ApJ...138..140A ADS Abt, A., “Hyperfine Structure in the Solar Spectrum”, 1951PASP...63..236A Abt, H. A., “A Discussion of Spectral Classification.”, ADS 1963ApJS....8...99A ADS

5