PESSTO: Survey Description and Products from the First Data Release by the Public ESO Spectroscopic Survey of Transient Objects
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Investigating the Unusual Spectroscopic Time-Evolution in SN 2012Fr∗
Draft version October 4, 2018 Typeset using LATEX default style in AASTeX62 Investigating the Unusual Spectroscopic Time-Evolution in SN 2012fr∗ Christopher Cain,1, 2, 3 E. Baron,2, 4, 5 M. M. Phillips,6 Carlos Contreras,7, 8 Chris Ashall,9 Maximilian D. Stritzinger,8 Christopher R. Burns,10 Anthony L. Piro,10 Eric Y. Hsiao,9, 7, 8 P. Hoeflich,9 Kevin Krisciunas,11 and Nicholas B. Suntzeff11 1Azusa Pacific University 901 E Alosta Ave, Azusa, California, 91702, USA 2University of Oklahoma 440 W. Brooks, Rm 100, Norman, Oklahoma, 73019, USA 3Department of Physics and Astronomy, University of California, Riverside, CA 92521, USA 4Hamburger Sternwarte, Gojenbergsweg 112, 21029 Hamburg, Germany 5Visiting Astronomer, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark. 6Las Campanas Observatory, Carnegie Observatories Casilla 601, La Serena, Chile 7Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, Chile 8Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark. 9Department of Physics, Florida State University, Tallahassee, FL 32306, USA 10Observatories of the Carnegie Institution for Science, 813 Santa Barbara St., Pasadena, CA 91101, USA 11George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843, USA (Received ; Revised ; Accepted ) Submitted to ApJ ABSTRACT The type Ia supernova (SN) 2012fr displayed an unusual combination of its Si II λλ5972, 6355 fea- tures. This includes the ratio of their pseudo equivalent widths, placing it at the border of the Shallow Silicon (SS) and Core Normal (CN) spectral subtype in the Branch diagram, while the Si IIλ6355 expansion velocities places it as a High-Velocity (HV) object in the Wang et al. -
Curriculum Vitae Avishay Gal-Yam
January 27, 2017 Curriculum Vitae Avishay Gal-Yam Personal Name: Avishay Gal-Yam Current address: Department of Particle Physics and Astrophysics, Weizmann Institute of Science, 76100 Rehovot, Israel. Telephones: home: 972-8-9464749, work: 972-8-9342063, Fax: 972-8-9344477 e-mail: [email protected] Born: March 15, 1970, Israel Family status: Married + 3 Citizenship: Israeli Education 1997-2003: Ph.D., School of Physics and Astronomy, Tel-Aviv University, Israel. Advisor: Prof. Dan Maoz 1994-1996: B.Sc., Magna Cum Laude, in Physics and Mathematics, Tel-Aviv University, Israel. (1989-1993: Military service.) Positions 2013- : Head, Physics Core Facilities Unit, Weizmann Institute of Science, Israel. 2012- : Associate Professor, Weizmann Institute of Science, Israel. 2008- : Head, Kraar Observatory Program, Weizmann Institute of Science, Israel. 2007- : Visiting Associate, California Institute of Technology. 2007-2012: Senior Scientist, Weizmann Institute of Science, Israel. 2006-2007: Postdoctoral Scholar, California Institute of Technology. 2003-2006: Hubble Postdoctoral Fellow, California Institute of Technology. 1996-2003: Physics and Mathematics Research and Teaching Assistant, Tel Aviv University. Honors and Awards 2012: Kimmel Award for Innovative Investigation. 2010: Krill Prize for Excellence in Scientific Research. 2010: Isreali Physical Society (IPS) Prize for a Young Physicist (shared with E. Nakar). 2010: German Federal Ministry of Education and Research (BMBF) ARCHES Prize. 2010: Levinson Physics Prize. 2008: The Peter and Patricia Gruber Award. 2007: European Union IRG Fellow. 2006: “Citt`adi Cefal`u"Prize. 2003: Hubble Fellow. 2002: Tel Aviv U. School of Physics and Astronomy award for outstanding achievements. 2000: Colton Fellow. 2000: Tel Aviv U. School of Physics and Astronomy research and teaching excellence award. -
Asymmetries in Sn 2014J Near Maximum Light Revealed Through Spectropolarimetry
ASYMMETRIES IN SN 2014J NEAR MAXIMUM LIGHT REVEALED THROUGH SPECTROPOLARIMETRY Item Type Article Authors Porter, Amber; Leising, Mark D.; Williams, G. Grant; Milne, P. A.; Smith, Paul; Smith, Nathan; Bilinski, Christopher; Hoffman, Jennifer L.; Huk, Leah; Leonard, Douglas C. Citation ASYMMETRIES IN SN 2014J NEAR MAXIMUM LIGHT REVEALED THROUGH SPECTROPOLARIMETRY 2016, 828 (1):24 The Astrophysical Journal DOI 10.3847/0004-637X/828/1/24 Publisher IOP PUBLISHING LTD Journal The Astrophysical Journal Rights © 2016. The American Astronomical Society. All rights reserved. Download date 27/09/2021 22:28:24 Item License http://rightsstatements.org/vocab/InC/1.0/ Version Final published version Link to Item http://hdl.handle.net/10150/622057 The Astrophysical Journal, 828:24 (12pp), 2016 September 1 doi:10.3847/0004-637X/828/1/24 © 2016. The American Astronomical Society. All rights reserved. ASYMMETRIES IN SN 2014J NEAR MAXIMUM LIGHT REVEALED THROUGH SPECTROPOLARIMETRY Amber L. Porter1, Mark D. Leising1, G. Grant Williams2,3, Peter Milne2, Paul Smith2, Nathan Smith2, Christopher Bilinski2, Jennifer L. Hoffman4, Leah Huk4, and Douglas C. Leonard5 1 Department of Physics and Astronomy, Clemson University, 118 Kinard Laboratory, Clemson, SC 29634, USA; [email protected] 2 Steward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson, AZ 85721, USA 3 MMT Observatory, P.O. Box 210065, University of Arizona, Tucson, AZ 85721-0065, USA 4 Department of Physics and Astronomy, University of Denver, 2112 East Wesley Avenue, Denver, CO 80208, USA 5 Department of Astronomy, San Diego State University, PA-210, 5500 Campanile Drive, San Diego, CA 92182-1221, USA Received 2016 February 14; revised 2016 May 11; accepted 2016 May 12; published 2016 August 24 ABSTRACT We present spectropolarimetric observations of the nearby Type Ia supernova SN 2014J in M82 over six epochs: +0, +7, +23, +51, +77, +109, and +111 days with respect to B-band maximum. -
Cviewoftherestlesssn2009ip Reveals the Explosive Ejection of a Massive Star Envelope Margutti, R., Et Al
1 Peter J. Brown Office Address Contact Information M311 Mitchell Institute for Fundamental Physics and Astronomy E-mail: [email protected] Department of Physics & Astronomy, Texas A&M University Cell: (979) 402-4523 Skype: grbpeter 4242 TAMU, College Station, TX 77843 www.linkedin.com/in/peter-brown-supernova Highlights Observational Astrophysicist with experience in ground and space-based Ultraviolet and• Optical Photometry and Spectroscopy of Supernovae and other Transients Leader of Swift supernova team since 2005 and Swift Cycle 14 Key Project • PI of 5 Hubble Space Telescope Programs • Principal Investigator of External Grants Totaling over $2,600,000 • 18 Refereed, First Author Journal Articles, 140+ Coauthored Journal Articles • 2017 Texas A&M College of Science Undergraduate Research Mentoring Award • Education Ph.D. in Astronomy & Astrophysics – Pennsylvania State University August 2009 Thesis Title: “The Ultraviolet Properties of Supernovae” Thesis Advisor: Dr. P. W. A. Roming B.S. in Physics and Astronomy – Brigham Young University August 2004 Senior Thesis Title: “Observing Gamma Ray Burst Afterglows from BYU’s Orson Pratt Observatory” Thesis Advisor: Professor J. W. Moody Academic Research Scientist – Mitchell Institute, Texas A&M University 2016 – present Positions Visiting Associate Professor Spring 2020 Visiting Assistant Professor Spring 2018 Mitchell Fellow, Postdoctoral Research Associate 2012 – 2016 Supervisor: Professor Lifan Wang Postdoctoral Research Associate – University of Utah 2009 – 2012 Supervisor: Professor -
Institute for Astronomy University of Hawai'i at M¯Anoa Publications in Calendar Year 2013
Institute for Astronomy University of Hawai‘i at Manoa¯ Publications in Calendar Year 2013 Aberasturi, M., Burgasser, A. J., Mora, A., Reid, I. N., Barnes, J. E., & Privon, G. C. Experiments with IDEN- Looper, D., Solano, E., & Mart´ın, E. L. Hubble Space TIKIT. In ASP Conf. Ser. 477: Galaxy Mergers in an Telescope WFC3 Observations of L and T dwarfs. Evolving Universe, 89–96 (2013) Mem. Soc. Astron. Italiana, 84, 939 (2013) Batalha, N. M., et al., including Howard, A. W. Planetary Albrecht, S., Winn, J. N., Marcy, G. W., Howard, A. W., Candidates Observed by Kepler. III. Analysis of the First Isaacson, H., & Johnson, J. A. Low Stellar Obliquities in 16 Months of Data. ApJS, 204, 24 (2013) Compact Multiplanet Systems. ApJ, 771, 11 (2013) Bauer, J. M., et al., including Meech, K. J. Centaurs and Scat- Al-Haddad, N., et al., including Roussev, I. I. Magnetic Field tered Disk Objects in the Thermal Infrared: Analysis of Configuration Models and Reconstruction Methods for WISE/NEOWISE Observations. ApJ, 773, 22 (2013) Interplanetary Coronal Mass Ejections. Sol. Phys., 284, Baugh, P., King, J. R., Deliyannis, C. P., & Boesgaard, A. M. 129–149 (2013) A Spectroscopic Analysis of the Eclipsing Short-Period Aller, K. M., Kraus, A. L., & Liu, M. C. A Pan-STARRS + Binary V505 Persei and the Origin of the Lithium Dip. UKIDSS Search for Young, Wide Planetary-Mass Com- PASP, 125, 753–758 (2013) panions in Upper Sco. Mem. Soc. Astron. Italiana, 84, Beaumont, C. N., Offner, S. S. R., Shetty, R., Glover, 1038–1040 (2013) S. C. -
SPECTROSCOPIC OBSERVATIONS of SN 2012Fr: a LUMINOUS, NORMAL TYPE Ia SUPERNOVA with EARLY HIGH-VELOCITY FEATURES and a LATE VELOCITY PLATEAU
The Astrophysical Journal, 770:29 (20pp), 2013 June 10 doi:10.1088/0004-637X/770/1/29 C 2013. The American Astronomical Society. All rights reserved. Printed in the U.S.A. SPECTROSCOPIC OBSERVATIONS OF SN 2012fr: A LUMINOUS, NORMAL TYPE Ia SUPERNOVA WITH EARLY HIGH-VELOCITY FEATURES AND A LATE VELOCITY PLATEAU M. J. Childress1,2, R. A. Scalzo1,2,S.A.Sim1,2,3, B. E. Tucker1,F.Yuan1,2, B. P. Schmidt1,2,S.B.Cenko4, J. M. Silverman5, C. Contreras6,E.Y.Hsiao6, M. Phillips6, N. Morrell6,S.W.Jha7,C.McCully7, A. V. Filippenko4, J. P. Anderson8, S. Benetti9,F.Bufano10, T. de Jaeger8, F. Forster8, A. Gal-Yam11, L. Le Guillou12,K.Maguire13, J. Maund3, P. A. Mazzali9,14,15, G. Pignata10, S. Smartt3, J. Spyromilio16, M. Sullivan17, F. Taddia18, S. Valenti19,20, D. D. R. Bayliss1, M. Bessell1,G.A.Blanc21, D. J. Carson22,K.I.Clubb4, C. de Burgh-Day23, T. D. Desjardins24, J. J. Fang25,O.D.Fox4, E. L. Gates25,I.-T.Ho26, S. Keller1, P. L. Kelly4,C.Lidman27, N. S. Loaring28,J.R.Mould29, M. Owers27, S. Ozbilgen23,L.Pei22, T. Pickering28, M. B. Pracy30,J.A.Rich21, B. E. Schaefer31, N. Scott29, M. Stritzinger32,F.P.A.Vogt1, and G. Zhou1 1 Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611, Australia; [email protected] 2 ARC Centre of Excellence for All-sky Astrophysics (CAASTRO) 3 Astrophysics Research Centre, School of Mathematics and Physics, Queen’s University Belfast, Belfast BT7 1NN, UK 4 Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA 5 Department of Astronomy, University of Texas, Austin, TX 78712-0259, USA 6 Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, Chile 7 Department of Physics and Astronomy, Rutgers, the State University of New Jersey, 136 Frelinghuysen Road, Piscataway, NJ 08854, USA 8 Departamento de Astronom´ıa, Universidad de Chile, Casilla 36-D, Santiago, Chile 9 INAF Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, I-35122 Padova, Italy 10 Departamento de Ciencias Fisicas, Universidad Andres Bello, Avda. -
[email protected] Current As of January 24, 2019
PUBLICATIONS:SAURABH W. JHA [email protected] current as of January 24, 2019 Journal Articles 169 “K2 Observations of SN 2018oh Reveal a Two-component Rising Light Curve for a Type Ia Supernova,” Dimitriadis, G., R. J. Foley, A. Rest, D. Kasen, A. L. Piro, A. Polin, D. O. Jones, A. Villar, G. Narayan, D. A. Coulter, C. D. Kilpatrick, Y.-C. Pan, C. Rojas-Bravo, O. D. Fox, S. W. Jha, P. E. Nugent, A. G. Riess, D. Scolnic, M. R. Drout, G. Barentsen, J. Dotson, M. Gully-Santiago, C. Hedges, A. M. Cody, T. Barclay, S. Howell, P. Garnavich, B. E. Tucker, E. Shaya, R. Mushotzky, R. P. Olling, S. Margheim, A. Zenteno, J. Coughlin, J. E. Van Cleve, J. V. d. M. Cardoso, K. A. Larson, K. M. McCalmont-Everton, C. A. Peterson, S. E. Ross, L. H. Reedy, D. Osborne, C. McGinn, L. Kohnert, L. Migliorini, A. Wheaton, B. Spencer, C. Labonde, G. Castillo, G. Beerman, K. Steward, M. Hanley, R. Larsen, R. Gangopadhyay, R. Kloetzel, T. Weschler, V. Nystrom, J. Moffatt, M. Redick, K. Griest, M. Packard, M. Muszynski, J. Kampmeier, R. Bjella, S. Flynn, B. Elsaesser, K. C. Cham- bers, H. A. Flewelling, M. E. Huber, E. A. Magnier, C. Z. Waters, A. S. B. Schultz, J. Bulger, T. B. Lowe, M. Willman, S. J. Smartt, K. W. Smith, S. Points, G. M. Strampelli, J. Brima- combe, P. Chen, J. A. Muñoz, R. L. Mutel, J. Shields, P. J. Vallely, S. Villanueva Jr., W. Li, X. Wang, J. Zhang, H. Lin, J. Mo, X. -
Celebrating 10000 Days of Supernova 1987A
The Centre of Excellence for All-sky Astrophysics 2014 CAASTRO Annual Scientific Conference Supernovae in the Local Universe: Celebrating 10,000 days of Supernova 1987A 11th -15th August 2014, Coffs Harbour, NSW, Australia PROGRAM 2014 ANNUAL SCIENTIFIC CONFERENCE Supernovae in the Local Universe: Celebrating 10,000 days of Supernova 1987A 10th-15th August Coffs Harbour, NSW, Australia SUNDAY 10 AUGUST 2014 Time Item Registration Desk Opens 3:00pm Jetty Harbour Room Welcome Drinks 5:00pm Charlie’s Decks Dinner Delegates own choice Options: • Charlie’s Restaurant • Room Service • Coffs Harbour City Centre (Taxi at own cost) 10-15 August 2014 Coffs Harbour, NSW, Australia 2 Supernovae in the Local Universe: Celebrating 10,000 days of Supernova 1987A MONDAY 11 AUGUST 2014 Time Item Optional Activity 6:30am Walk – Charlesworth Bay to Korora Bay Breakfast 7:00am Charlie’s Restaurant 7:30am – 8:50am Registration Desk Open Welcome Welcome/Acknowledgement of Country 9:00am Jetty Harbour Room Welcome and Conference Overview 9:05am – 9:15am Bryan Gaensler Session I: 10,000 Days of Supernova 1987A Session Chair: Bryan Gaensler Dick McCray (invited talk) 9:15am – 9:40am Supernova 1987A at 10,000 days (25 min presentation) Josefin Larsson (invited talk) 9:40am– 10:05am The ejecta of SN 1987A at 10,000 days (25 min presentation) Giovanna Zanardo 10:05am – 10:20am Spectral & morphological analysis of the remnant of Supernova 1987A with ALMA & ATCA (15 min presentation) Mikako Matsuura 10:20am – 10:35am Herschel and ALMA observations of supernova 1987A -
UV–OPTICAL OBSERVATION of TYPE Ia SUPERNOVA SN 2013Dy in NGC 7250 Qian Zhai1,2,3, Ju-Jia Zhang1,3, Xiao-Feng Wang4, Tian-Meng Zhang5, Zheng-Wei Liu6, Peter J
The Astronomical Journal, 151:125 (16pp), 2016 May doi:10.3847/0004-6256/151/5/125 © 2016. The American Astronomical Society. All rights reserved. UV–OPTICAL OBSERVATION OF TYPE Ia SUPERNOVA SN 2013dy IN NGC 7250 Qian Zhai1,2,3, Ju-Jia Zhang1,3, Xiao-Feng Wang4, Tian-Meng Zhang5, Zheng-Wei Liu6, Peter J. Brown7, Fan Huang4, Xu-Lin Zhao4, Liang Chang1,3, Wei-Min Yi1,3, Chuan-Jun Wang1,3, Yu-Xin Xin1,3, Jian-Guo Wang1,3, Bao-Li Lun1,3, Xi-Liang Zhang1,3, Yu-Feng Fan1,3, Xiang-Ming Zheng1,3, and Jin-Ming Bai1,3 1 Yunnan Observatories (YNAO), Chinese Academy of Sciences, Kunming 650011, China; [email protected] 2 University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China 3 Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China 4 Physics Department and Tsinghua Center for Astrophysics (THCA), Tsinghua University, Beijing 100084, China 5 National Astronomical Observatories of China (NAOC), Chinese Academy of Sciences, Beijing 100012, China 6 Argelander-Institut für Astronomie, Auf dem Hügel 71, D-53121, Bonn, Germany 7 George P. and Cynthia Woods Mitchell Institute for Fundamental Physics & Astronomy, Texas A. & M. University, Department of Physics and Astronomy, 4242 TAMU, College Station, TX 77843, USA Received 2015 August 8; accepted 2016 February 16; published 2016 April 26 ABSTRACT Extensive and independent observations of Type Ia supernova (SN Ia) SN 2013dy are presented, including a larger set of UBVRI photometry and optical spectra from a few days before the peak brightness to ∼ 200 days after explosion, and ultraviolet (UV) photometry spanning from t≈–10 days to t≈+15 days refers to the B band 43 −1 maximum. -
SALT-Annual-Report-2013
SOUTHERN AFRICAN LARGE TELESCOPE ANNUAL REPORT 2013 The Board of the Southern African Large Telescope (SALT) is proud to present its Annual Performance Report for the period 1 January 2013 to 31 December 2013. This report offers an overview of the activities and performance of SALT, and highlights the impact of a selection of SALT research projects. The Southern African Large Telescope (SALT) is the largest single optical telescope in the southern hemisphere and amongst the largest in the world. It has a hexagonal primary mirror array 11 metres across, comprising 91 individual 1m hexagonal mirrors. It is the non-identical twin of the Hobby- Eberly Telescope (HET) located at McDonald Observatory, Texas, USA. HET and SALT represent a completely new paradigm in the design of optical telescopes. The light gathered by its huge mirror is fed into a suite of instruments (an imager and two spectrographs) from which astronomers infer the properties of planets, stars and galaxies, as well as the structure of the Universe itself. SALT is owned by the SALT Foundation, a private company registered in South Africa. The shareholders of this company include universities, institutions and science funding agencies from Africa, India, Europe, New Zealand and North America. The South African National Research Foundation is the major shareholder with a ~1/. 3 stake Other large shareholders are Dartmouth College, the University of Wisconsin - Madison, Nicolaus Copernicus Astronomical Centre of the Polish Academy of Sciences and Rutgers University. Smaller shareholders include the American Museum of Natural History, the Indian Inter - University Centre for Astronomy and Astrophysics in India, the University of Canterbury(), in New Zealand the University of North Carolina , Göttingen University and the UK SALT Consortium, the latter representing the Universities of Central Lancashire,, Keele Nottingham and Southampton,. -
Curriculum Vitae Anthony L
Curriculum Vitae Anthony L. Piro CarnegieObservatories E-mail: [email protected] 813SantaBarbaraStreet Web: http://users.obs.carnegiescience.edu/piro Pasadena,CA,91101 Phone:(626)304-0297 Research Summary My research is focused on theoretical astrophysics with a broad interest in topics involving com- pact objects, astrophysical explosions, accretion flows, and stellar dynamics. I draw on my ex- pertise in General Relativity, nuclear physics, thermodynamics, condensed matter physics, and fluid and magnetohydrodynamics both to predict new observational phenomena as well as to un- derstand the key underlying physical mechanisms responsible for current observations. I take a more classical approach to solving these problems — using a combination of analytic and simple numerical models to build physical intuition for complex phenomena. Education 2006 Doctor of Philosophy in Physics, University of California, Santa Barbara. 2001 Bachelor of Science in Physics, University of California, Santa Barbara. Academic Positions 2018 – Adjunct Associate Professor of Physics and Astronomy, USC. 2017– StaffMember,CarnegieObservatories. 2015–2017 George Ellery Hale Distinguished Scholar in Theoretical Astrophysics, Carnegie Observatories. 2014 – 2015 Postdoctoral Research Associate, Carnegie Observatories. 2010 – 2014 Postdoctoral Fellow in Theoretical Astrophysics, Caltech. 2007 – 2010 Theoretical Astrophysics Center Fellow, University of California, Berkeley. Honors and Awards • Scialog Fellow, Research Corporation for Science Advancement, 2015 -
Alexei V. Filippenko PUBLICATIONS (∗ = Refereed Journals); 18 July 2021
Alexei V. Filippenko PUBLICATIONS (∗ = refereed journals); 18 July 2021 Citations: >128k (ADS), >168k (Google Scholar). h-index: 150 (ADS), 172 (Google Scholar) ∗1) A. V. Filippenko and R. S. Simon (1981). Astron. Jour., 86, 671{686. \A Study of 52 RR Lyrae Stars in M15." ∗2) A. V. Filippenko (1982). Publ. Astron. Soc. Pacific, 94, 715{721. \The Importance of Atmospheric Differential Refraction in Spectrophotometry." ∗3) A. V. Filippenko and V. Radhakrishnan (1982). Astrophys. Jour., 263, 828{834. \Pulsar Nulling and Drifting Subpulse Phase Memory." 4) A. V. Filippenko, A. C. S. Readhead, and M. S. Ewing (1983). In Positron-Electron Pairs in Astrophysics (Proceedings of AIP Conference 101), ed. M. L. Burns, A. K. Harding, and R. Ramaty (New York: American Institute of Physics), 113{117. \The Effect of Nulls on the Drifting Subpulses in PSR 0809+74." ∗5) M. A. Malkan and A. V. Filippenko (1983). Astrophys. Jour., 275, 477{492. \The Stellar and Nonstellar Continua of Seyfert Galaxies: Nonthermal Emission in the Near-Infrared." ∗6) A. V. Filippenko and J. L. Greenstein (1984). Publ. Astron. Soc. Pacific, 96, 530{536. \Faint Spectrophotometric Standard Stars for Large Optical Telescopes. I." ∗7) A. V. Filippenko and J. P. Halpern (1984). Astrophys. Jour., 285, 458{474. \NGC 7213: A Key to the Nature of Liners?" ∗8) J. P. Halpern and A. V. Filippenko (1984). Astrophys. Jour., 285, 475{482. \The Nonstellar Continuum of the Seyfert Galaxy NGC 7213." 9) A. V. Filippenko (1984). Ph.D. thesis, California Institute of Technology. (Ann Arbor: University Microfilms International), \Physical Conditions in Low-Luminosity Active Galactic Nuclei." ∗10) A.