2013 Apr 30 FINAL PROGRAM, AAS TCS3, Giants of Eclipse, Monterey
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An Atlas of Far-Ultraviolet Spectra of the Zeta Aurigae Binary 31 Cygni with Line Identifications
The Astrophysical Journal Supplement Series, 211:27 (14pp), 2014 April doi:10.1088/0067-0049/211/2/27 C 2014. The American Astronomical Society. All rights reserved. Printed in the U.S.A. AN ATLAS OF FAR-ULTRAVIOLET SPECTRA OF THE ZETA AURIGAE BINARY 31 CYGNI WITH LINE IDENTIFICATIONS Wendy Hagen Bauer1 and Philip D. Bennett2,3 1 Whitin Observatory, Wellesley College, 106 Central Street, Wellesley, MA 02481, USA; [email protected] 2 Department of Astronomy & Physics, Saint Mary’s University, Halifax, NS B3H 3C3, Canada 3 Eureka Scientific, Inc., 2452 Delmer Street, Suite 100, Oakland, CA 94602-3017, USA Received 2013 March 29; accepted 2013 October 26; published 2014 April 2 ABSTRACT The ζ Aurigae system 31 Cygni (K4 Ib + B4 V) was observed by the FUSE satellite during total eclipse and at three phases during chromospheric eclipse. We present the coadded, calibrated spectra and atlases with line identifications. During total eclipse, emission from high ionization states (e.g., Fe iii and Cr iii) shows asymmetric profiles redshifted from the systemic velocity, while emission from lower ionization states (e.g., Fe ii and O i) appears more symmetric and is centered closer to the systemic velocity. Absorption from neutral and singly ionized elements is detected during chromospheric eclipse. Late in chromospheric eclipse, absorption from the K star wind is detected at a terminal velocity of ∼80 km s−1. These atlases will be useful for interpreting the far-UV spectra of other ζ Aur systems, as the observed FUSE spectra of 32 Cyg, KQ Pup, and VV Cep during chromospheric eclipse resemble that of 31 Cyg. -
THE 1979 ECLIPSE of ZETA AURIGAE Robert D. Chapman
THE 1979 ECLIPSE OF ZETA AURIGAE Robert D. Chapman Laboratory forAstronomy and Solar Physics Goddard Space Flight Center Greenbelt, ND 20771 ABSTRACT Observations of the system ; Aurigae made around primary eclipse are described, and their significance is discussed in a preliminary fashion. THE OBSERVATIONS High-dispersion, long- and short-wavelength spectra of the atmospheric eclipsing binary star system ; Aurigae (K2II + B8V) have been obtained during a total of ten observing sessions between September 15, 1979 and March 31, 1980. Dates of observations, corresponding to numbered positions in Figure I are: (I) Sept. 15, (2) Nov. i, (3) Nov. 13, (4) Nov. 15, (S) Nov. 18, (6) Nov. 22, (7) Dec. 16, [8) Jan. 29, (9) Feb. 29, (10) Mar. 31. The spectrum obtained on Sept. 15 resembles the spectrum of a single late B-star [e.g. the B6V star o Eri). Atmospheric effects are present and increasing in strength between Nov. i and Nov. 18. To a first approximation, the spectrum changes appear to be an increase in strength and number of absorption lines with changes in the undisturbed continuum being small. This point requires further study, however. On Nov. 22, the B star had passed second contact, and the spectrum of the system was a pure emission line spectrum. At mid-eclipse, on Dec. 16 the spectrum had changed but little from its appearance on Nov. 22. The egress spectra obtained in 1980 are not significantly different in appearance from the ingress spectra. A study of differences in detail is being undertaken now. Figure 2 shows the behavior of the Fe II resonance lines in three spectra. -
The Very Long Mystery of Epsilon Aurigae
A Unique Eclipsing Variable TheThe VeryVery LongLong MMysteryystery ofof EpsilonEpsilon AAurigaeurigae robertrobert e. sstenceltencel one of the great scientifi c advances of the 20th A remarkable naked-eye star century was the theory of stellar evolution, as physicists worked out not just how stars shine, but how they origi- will soon start dimming for nate, live, change, and die. To test theory against reality, however, astronomers had to determine accurate masses the eighth time since 1821. for many diff erent kinds of stars — and this meant analyz- What’s going on is still ing the motions of binary pairs. Theorists also needed the stars’ exact diameters, and this meant analyzing the light not exactly clear. curves of eclipsing binaries in particular. A century ago, S&T ILLUSTRATION BY CASEY REED giants of early astrophysics worked intensely on the prob- lem of eclipsing-binary analysis. Henry Norris Russell’s paper “On the Determination of the Orbital Elements of Eclipsing Variable Stars,” published in 1912, set the stage for what followed. BIG WHITE STAR, BIGGER BLACK PARTNER Epsilon Aurigae, hotter than the Sun and larger than Earth’s entire orbit, pours forth some 130,000 times the Sun’s light — which is why it shines as brightly as 3rd magnitude even from 2,000 light-years away. According to the currently favored model, a long, dark object will start sliding across its middle this summer. The object seems to be an opaque warped disk 10 a.u. wide and appearing roughly 1 a.u. tall. Whatever lies at its center seems to be hidden — though there’s also evidence that we see right through the center. -
121012-AAS-221 Program-14-ALL, Page 253 @ Preflight
221ST MEETING OF THE AMERICAN ASTRONOMICAL SOCIETY 6-10 January 2013 LONG BEACH, CALIFORNIA Scientific sessions will be held at the: Long Beach Convention Center 300 E. Ocean Blvd. COUNCIL.......................... 2 Long Beach, CA 90802 AAS Paper Sorters EXHIBITORS..................... 4 Aubra Anthony ATTENDEE Alan Boss SERVICES.......................... 9 Blaise Canzian Joanna Corby SCHEDULE.....................12 Rupert Croft Shantanu Desai SATURDAY.....................28 Rick Fienberg Bernhard Fleck SUNDAY..........................30 Erika Grundstrom Nimish P. Hathi MONDAY........................37 Ann Hornschemeier Suzanne H. Jacoby TUESDAY........................98 Bethany Johns Sebastien Lepine WEDNESDAY.............. 158 Katharina Lodders Kevin Marvel THURSDAY.................. 213 Karen Masters Bryan Miller AUTHOR INDEX ........ 245 Nancy Morrison Judit Ries Michael Rutkowski Allyn Smith Joe Tenn Session Numbering Key 100’s Monday 200’s Tuesday 300’s Wednesday 400’s Thursday Sessions are numbered in the Program Book by day and time. Changes after 27 November 2012 are included only in the online program materials. 1 AAS Officers & Councilors Officers Councilors President (2012-2014) (2009-2012) David J. Helfand Quest Univ. Canada Edward F. Guinan Villanova Univ. [email protected] [email protected] PAST President (2012-2013) Patricia Knezek NOAO/WIYN Observatory Debra Elmegreen Vassar College [email protected] [email protected] Robert Mathieu Univ. of Wisconsin Vice President (2009-2015) [email protected] Paula Szkody University of Washington [email protected] (2011-2014) Bruce Balick Univ. of Washington Vice-President (2010-2013) [email protected] Nicholas B. Suntzeff Texas A&M Univ. suntzeff@aas.org Eileen D. Friel Boston Univ. [email protected] Vice President (2011-2014) Edward B. Churchwell Univ. of Wisconsin Angela Speck Univ. of Missouri [email protected] [email protected] Treasurer (2011-2014) (2012-2015) Hervey (Peter) Stockman STScI Nancy S. -
Infrared Studies of Epsilon Aurigae in Eclipse
The Astronomical Journal, 142:174 (9pp), 2011 November doi:10.1088/0004-6256/142/5/174 C 2011. The American Astronomical Society. All rights reserved. Printed in the U.S.A. INFRARED STUDIES OF EPSILON AURIGAE IN ECLIPSE Robert E. Stencel1, Brian K. Kloppenborg1, Randall E. Wall, Jr.1, Jeffrey L. Hopkins2, Steve B. Howell3, D. W. Hoard4, John Rayner5, Schelte Bus5, Alan Tokunaga5, Michael L. Sitko6,7, Suellen Bradford6,7, Ray W. Russell8, David K. Lynch8, Heidi Hammel9, Barbara Whitney9, Glenn Orton10, Padma Yanamandra-Fisher10, Joseph L. Hora11,PhilipHinz12, William Hoffmann12, and Andrew Skemer12 1 Department of Physics & Astronomy, University of Denver, Denver, CO 80208 USA; [email protected] 2 Hopkins Phoenix Observatory, Phoenix, AZ 85033 USA 3 National Optical Astronomy Observatories, Tucson, AZ 85719, USA 4 Spitzer Science Center, California Institute of Technology, Pasadena, CA 91125, USA 5 Institute for Astronomy, University of Hawaii, Honolulu, HI 96822, USA 6 Department of Physics, Cincinnati University, Cincinnati, OH, USA 7 Space Science Institute, Boulder, CO, USA 8 The Aerospace Corporation, Los Angeles, CA 90009, USA 9 Space Science Institute, Boulder, CO 80301, USA 10 Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA 11 Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA 12 Steward Observatory, Department of Astronomy, University of Arizona, Tucson, AZ 85721, USA Received 2011 July 7; accepted 2011 September 16; published 2011 October 17 ABSTRACT We report here on a series of medium resolution spectro-photometric observations of the enigmatic long period eclipsing binary epsilon Aurigae, during its eclipse interval of 2009–2011, using near-infrared spectra obtained with SpeX on the Infrared Telescope Facility (IRTF), mid-infrared spectra obtained with BASS on AOES and IRTF, MIRSI on IRTF, and MIRAC4 on the MMT, along with mid-infrared photometry using MIRSI on IRTF and MIRAC4 on the MMT, plus 1995–2000 timeframe published photometry and data obtained with Denver’s TNTCAM2 at WIRO. -
Arxiv:2006.10868V2 [Astro-Ph.SR] 9 Apr 2021 Spain and Institut D’Estudis Espacials De Catalunya (IEEC), C/Gran Capit`A2-4, E-08034 2 Serenelli, Weiss, Aerts Et Al
Noname manuscript No. (will be inserted by the editor) Weighing stars from birth to death: mass determination methods across the HRD Aldo Serenelli · Achim Weiss · Conny Aerts · George C. Angelou · David Baroch · Nate Bastian · Paul G. Beck · Maria Bergemann · Joachim M. Bestenlehner · Ian Czekala · Nancy Elias-Rosa · Ana Escorza · Vincent Van Eylen · Diane K. Feuillet · Davide Gandolfi · Mark Gieles · L´eoGirardi · Yveline Lebreton · Nicolas Lodieu · Marie Martig · Marcelo M. Miller Bertolami · Joey S.G. Mombarg · Juan Carlos Morales · Andr´esMoya · Benard Nsamba · KreˇsimirPavlovski · May G. Pedersen · Ignasi Ribas · Fabian R.N. Schneider · Victor Silva Aguirre · Keivan G. Stassun · Eline Tolstoy · Pier-Emmanuel Tremblay · Konstanze Zwintz Received: date / Accepted: date A. Serenelli Institute of Space Sciences (ICE, CSIC), Carrer de Can Magrans S/N, Bellaterra, E- 08193, Spain and Institut d'Estudis Espacials de Catalunya (IEEC), Carrer Gran Capita 2, Barcelona, E-08034, Spain E-mail: [email protected] A. Weiss Max Planck Institute for Astrophysics, Karl Schwarzschild Str. 1, Garching bei M¨unchen, D-85741, Germany C. Aerts Institute of Astronomy, Department of Physics & Astronomy, KU Leuven, Celestijnenlaan 200 D, 3001 Leuven, Belgium and Department of Astrophysics, IMAPP, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, the Netherlands G.C. Angelou Max Planck Institute for Astrophysics, Karl Schwarzschild Str. 1, Garching bei M¨unchen, D-85741, Germany D. Baroch J. C. Morales I. Ribas Institute of· Space Sciences· (ICE, CSIC), Carrer de Can Magrans S/N, Bellaterra, E-08193, arXiv:2006.10868v2 [astro-ph.SR] 9 Apr 2021 Spain and Institut d'Estudis Espacials de Catalunya (IEEC), C/Gran Capit`a2-4, E-08034 2 Serenelli, Weiss, Aerts et al. -
Observation and Interpretation of Zeta Aurigae Stars
OBSERVATION AND INTERPRETATION OF ZETA AURIGAE STARS Robert D. Chapman Sciences Directorate Goddard Space Flight Center Greenbelt, Maryland 20771 ABSTRACT. The ultraviolet observations of four Zeta Aurigau stars are reviewed. A, probably oversimplified, interpretation of the observa tions points to a straight forward connection between the spectral type of the B star and the amount of high temperature plasma in the systems. 1. INTRODUCTION There are six stars that are considered to be Zeta Aurigae stars by various authors. Table 1 Zeta Aurigae Stars Star Spectral Stars Period (days) Zeta Aur K3II + B7V 972.2 31 Cyg K4Ib + B4V 3784. 32 Cyg K5Iab + B8V 1148. 22 Vul G3Ib-II + B9V 249.1 Epsilon Aur FOIap + ?? 9885. W Cephei M2la + Be 7430 Of these stars, the last two will not be treated here because they are discussed elsewhere in the proceedings and because they differ somewhat from the first four stars on the list. The most obvious feature of the Zeta Aurigae stars is the atmospheric eclipse. The orbital inclination of all the pairs is near 90°, and when the B star goes into eclipse behind the late-type primary, its light passes through the atmosphere of the primary giving a depth dependent probe of the atmospheric structure. The atmospheric eclipse of 22 Vul was discovered recently by Parsons and Ake (1983 a, b) using spectra taken by the International Ultraviolet Explorer (IUE). The atmospheric eclipses of Zeta Aur, 31 and 32 Cyg were discovered much earlier and have been studied at length using ground based spectra (cf, for instance, Wright 1970). -
Symposium on Telescope Science
Proceedings for the 26th Annual Conference of the Society for Astronomical Sciences Symposium on Telescope Science Editors: Brian D. Warner Jerry Foote David A. Kenyon Dale Mais May 22-24, 2007 Northwoods Resort, Big Bear Lake, CA Reprints of Papers Distribution of reprints of papers by any author of a given paper, either before or after the publication of the proceedings is allowed under the following guidelines. 1. The copyright remains with the author(s). 2. Under no circumstances may anyone other than the author(s) of a paper distribute a reprint without the express written permission of all author(s) of the paper. 3. Limited excerpts may be used in a review of the reprint as long as the inclusion of the excerpts is NOT used to make or imply an endorsement by the Society for Astronomical Sciences of any product or service. Notice The preceding “Reprint of Papers” supersedes the one that appeared in the original print version Disclaimer The acceptance of a paper for the SAS proceedings can not be used to imply or infer an endorsement by the Society for Astronomical Sciences of any product, service, or method mentioned in the paper. Published by the Society for Astronomical Sciences, Inc. First printed: May 2007 ISBN: 0-9714693-6-9 Table of Contents Table of Contents PREFACE 7 CONFERENCE SPONSORS 9 Submitted Papers THE OLIN EGGEN PROJECT ARNE HENDEN 13 AMATEUR AND PROFESSIONAL ASTRONOMER COLLABORATION EXOPLANET RESEARCH PROGRAMS AND TECHNIQUES RON BISSINGER 17 EXOPLANET OBSERVING TIPS BRUCE L. GARY 23 STUDY OF CEPHEID VARIABLES AS A JOINT SPECTROSCOPY PROJECT THOMAS C. -
Vanderbilt University, Department of Physics & Astronomy VU Station B 1807, Nashville, TN 37235 Phone: 615-322-2828, FAX: 61
CURRICULUM VITAE: KEIVAN GUADALUPE STASSUN SENIOR ASSOCIATE DEAN FOR GRADUATE EDUCATION & RESEARCH, COLLEGE OF ARTS & SCIENCE Vanderbilt University, Department of Physics & Astronomy VU Station B 1807, Nashville, TN 37235 Phone: 615-322-2828, FAX: 615-343-7263 [email protected] DEGREES EARNED University of Wisconsin—Madison Degree: Ph.D. in Astronomy, 2000 Thesis: Rotation, Accretion, and Circumstellar Disks among Low-Mass Pre-Main-Sequence Stars Advisor: Robert D. Mathieu University of California at Berkeley Degree: A.B. in Physics/Astronomy (double major) with Honors, 1994 Thesis: A Simultaneous Photometric and Spectroscopic Variability Study of Classical T Tauri Stars Advisor: Gibor Basri EMPLOYMENT HISTORY Vanderbilt University Director, Vanderbilt Center for Autism & Innovation, 2017-present Stevenson Endowed Professor of Physics & Astronomy, 2016-present Senior Associate Dean for Graduate Education & Research, College of Arts & Science, 2015-18 Harvie Branscomb Distinguished Professor, 2015-16 Professor of Physics and Astronomy, 2011-present Director, Vanderbilt Initiative in Data-intensive Astrophysics (VIDA), 2007-present Co-Director, Fisk-Vanderbilt Masters-to-PhD Bridge Program, 2004-15 Associate Professor of Physics and Astronomy, 2008-11 Assistant Professor of Physics and Astronomy, 2003-08 Fisk University Adjunct Professor of Physics, 2006-present University of Wisconsin—Madison NASA Hubble Postdoctoral Research Fellow, Astronomy, 2001-03 Area: Observational Studies of Low-Mass Star Formation Mentor: Robert D. Mathieu University of Wisconsin—Madison Assistant Director and Postdoctoral Fellow, NSF Graduate K-12 Teaching Fellows Program, 2000-01 Duties: Development of fellowship program, instructor for graduate course in science education research Mentor: Terrence Millar HONORS AND AWARDS Presidential Award for Excellence in Science, Math, and Engineering Mentoring—2018 AAAS Mentor of the Year—2018 HHMI Professor—2018- Research Corporation for Science Advancement SEED Award—2017 1/29 Keivan G. -
News from the Society for Astronomical Sciences
News from the Society for Astronomical Sciences Vol. 9 No. 4 (October, 2011) SAS at PATS-2011 The Society for Astronomical Sciences had a productive presence at this year’s Pacific Astronomy and Tele- scope Show. Our booth display, designed to en- courage curiosity and interest in small- telescope science, seemed to gener- ate a nice response. Quite a few visi- tors engaged us in long conversations about projects, equipment, and the research contributions that are made by backyard scientists. We didn’t keep count, but at least a hundred people picked up SAS brochures. Also at PATS, Brian Warner presented a lecture on “Measuring the Universe”, which focused specifically on finding variable stars, and determining their lightcurves. About 40 people attended the lecture, and at least half of them accepted free copies of MPO Canopus, to facilitate their own entry into “backyard science”. If you are giving a lecture or participat- ing in a conference, and would like some SAS brochures to hand out, or the 3-poster SAS display, contact Bob Buchheim. Gene Lucas (left) explains the value of small-telescope science to a visitor at the SAS booth during PATS-2011. Photo by Bob Buchheim. Call for Observations of Zeta Aurigae Eclipse making these eclipses 10 times less during, and after the Octo- rare than the 9890 day cycle for Epsi- ber/November 2011 primary eclipse Here is a project that will build on your are needed – most particularly during experience with Epsilon Aurigae, and lon Aur. Primary eclipses occur when the B-star is eclipsed by the (much the ingress and egress stages, where enable you to contribute to the study of the hot star acts as a probe for the a stellar atmosphere. -
The International Epsilon Aurigae Campaign 2009-2011. a Description of the Campaign and Early Results to May 2010
The International Epsilon Aurigae Campaign 2009-2011. A description of the campaign and early results to May 2010 Robin Leadbeater Three Hills Observatory, UK [email protected] Published in proceedings of ”Stellar Winds in Interaction”, editors T. Eversberg and J.H. Knapen. Full proceedings volume is available on http://www.stsci.de/pdf/arrabida.pdf 1 Background In early 2009, immediately following the end of the WR140 periastron campaign (see these proceed- ings), I turned my telescope back to Aurigae in time for the start of the eclipse. As well as being an interesting object in its own right, the Pro-Am campaign being run on Aurigae during the current eclipse is a good example of how amateur spectroscopists can make a useful contribution. Aurigae is a naked eye magnitude 3 star and was first noted to be variable by Johan Frisch in 1821. It was subsequently found to be an eclipsing binary with a period of 27.1 years which undergoes an approx- imately 2 year long flat-bottomed eclipse with approximately 0.8 magnitude drop in V (Fig. 1, note also an apparent brightening around mid eclipse in this light curve from the last eclipse.) All the visible light from the system appears to come from one component (an F-type star) with no visible light from the eclipsing object, which clearly cannot be a normal star given the large size and very low luminosity in the visible part of the spectrum. Since we see only one component, there is arXiv:1101.1435v1 [astro-ph.SR] 7 Jan 2011 not enough data for a complete orbital solution so there has been plenty of room for speculation over the years as to the size, mass and nature of the components and the scale of the system. -
Astronomy 2009 Index
Astronomy Magazine 2009 Index Subject Index 1RXS J160929.1-210524 (star), 1:24 4C 60.07 (galaxy pair), 2:24 6dFGS (Six Degree Field Galaxy Survey), 8:18 21-centimeter (neutral hydrogen) tomography, 12:10 93 Minerva (asteroid), 12:18 2008 TC3 (asteroid), 1:24 2009 FH (asteroid), 7:19 A Abell 21 (Medusa Nebula), 3:70 Abell 1656 (Coma galaxy cluster), 3:8–9, 6:16 Allen Telescope Array (ATA) radio telescope, 12:10 ALMA (Atacama Large Millimeter/sub-millimeter Array), 4:21, 9:19 Alpha (α) Canis Majoris (Sirius) (star), 2:68, 10:77 Alpha (α) Orionis (star). See Betelgeuse (Alpha [α] Orionis) (star) Alpha Centauri (star), 2:78 amateur astronomy, 10:18, 11:48–53, 12:19, 56 Andromeda Galaxy (M31) merging with Milky Way, 3:51 midpoint between Milky Way Galaxy and, 1:62–63 ultraviolet images of, 12:22 Antarctic Neumayer Station III, 6:19 Anthe (moon of Saturn), 1:21 Aperture Spherical Telescope (FAST), 4:24 APEX (Atacama Pathfinder Experiment) radio telescope, 3:19 Apollo missions, 8:19 AR11005 (sunspot group), 11:79 Arches Cluster, 10:22 Ares launch system, 1:37, 3:19, 9:19 Ariane 5 rocket, 4:21 Arianespace SA, 4:21 Armstrong, Neil A., 2:20 Arp 147 (galaxy pair), 2:20 Arp 194 (galaxy group), 8:21 art, cosmology-inspired, 5:10 ASPERA (Astroparticle European Research Area), 1:26 asteroids. See also names of specific asteroids binary, 1:32–33 close approach to Earth, 6:22, 7:19 collision with Jupiter, 11:20 collisions with Earth, 1:24 composition of, 10:55 discovery of, 5:21 effect of environment on surface of, 8:22 measuring distant, 6:23 moons orbiting,