DOCSLIB.ORG

Why Galaxies Care About AGB Stars III a Closer Look in Space and Time Conference Programme and Abstracts

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Why Galaxies Care About AGB Stars III a Closer Look in Space and Time Conference Programme and Abstracts Why Galaxies care about AGB Stars III A Closer Look in Space and Time Conference Programme and Abstracts SCIENTIFIC ORGANIZING COMMITTEE: Hans Olofsson (chair) I. Cherchneff M. Groenewegen S. Höfner R.M. Humphreys A. Jorissen A. Karakas F. Kerschbaum (co-chair) T. Lebzelter C. Maraston M. Meixner B. Plez P. Whitelock H. van Winckel R. Wing M. Wittkowski LOCAL ORGANIZING COMMITTEE: F. Kerschbaum (chair) J. Hron (co-chair) T. Lebzelter W. Nowotny R. Ottensamer Th. Posch and numerous helping hands! CONFERENCE LOCATION: University Campus Vienna Hörsaalzentrum Hof 2 Spitalgasse 2 1090 Wien EDITORS: V. Baumgartner R. Ottensamer Vienna, July 2014 2 WELCOME TO VIENNA! Dear participants, We would like to welcome all of you to the conference “Why Galaxies Care About AGB Stars III. A Closer Look in Space and Time.” We are very glad to see that so many sci- entists decided to join us for a week of intensive discussion on the current developments in the field of AGB stars and their impact on galactic and extragalactic research. In 2006, the subtitle of our conference series was “Their importance as actors and probes,” in 2010 we focused on “Shining Examples and Common Inhabitants.” This time, we want to zoom in and take “A Closer Look in Space and Time.” The detailed and complex physics of the atmospheres of AGB stars are one focus. Their close environment – being part of a binary system or the interaction with the ISM is an- other. The mass loss process and its effect on the host systems forms the bridge from stellar to galactic and extragalactic astronomy. Finally, recently developed and future ob- serving tools and capabilities opening up new windows for us get special attention. This conference is hosted by the Austrian Society for Astronomy and Astrophysics and the Department of Astrophysics at the University of Vienna. The meeting is co-sponsored by the Vienna Conference Bureau. We thank the Robert F.Wing Support Fund, the Faculty of Earth Sciences, Geography and Astronomy of the University of Vienna, the Austrian Science Fund and several other sponsors for generous support. We hope you all have an excellent and stimulating conference and that you enjoy Austria and Vienna. The LOC 3 CONTENTS and SCIENTIFIC PROGRAMME TABLE OF CONTENTS Welcome.............................................................................3 Scientific Programme . 4 Oral Presentations . 11 Poster Presentations . 81 Conference Information . 124 Social Programme . 125 Local Information, Maps . 126 List of Participants . 131 Sponsors . 137 4 Scientific Programme SUNDAY, July 27, 2014 18:00 – 20:00 Registration and Welcome 5 SCIENTIFIC PROGRAMME MONDAY, July 28, 2014 08:00 Registration 08:45 Welcome – Pascale Ehrenfreund, Thilo Hofmann, SOC, LOC 09:15 Remembering Oliver Chesneau – Eric Lagadec 09:22 Remembering Tom Lloyd Evans – Hans Van Winckel Introductory Talk 09:30 AGB Evolution: Complexities and Opportunities – A. Renzini 11 Complex Atmospheres 10:00 3D hydrodynamical simulations of evolved stars and observations of stellar surfaces – A. Chiavassa 12 10:30 Studying the generation of shock waves in AGB stars with 3D radiation-hydrodynamics simulations – B. Freytag 13 10:45 Coffee break and poster viewing 11:15 Mass loss and variability in evolved stars – M. Marengo 14 11:45 Time Variability of Molecular Line Emission in IRC+10216 – D. Teyssier 15 12:00 Period – mass-loss rate relation of Miras with and without technetium – S. Uttenthaler 16 12:15 Lunch break 14:00 Spatially resolving the complex atmosphere of cool evolved stars – K. Ohnaka 17 14:30 Evolved stars with complex atmospheres observed with SOFIA from the Stratosphere – N. Ryde 18 14:45 An Imaging Line Survey of the Oxygen-rich AGB star IK Tau with the Submillimeter Array – E. De Beck 19 15:00 Making water in carbon-rich AGB winds – R. Lombaert 20 15:15 Herschel Observations of extreme OH/IR stars: using H2O to probe the initial masses – K. Justtanont 21 15:30 Coffee break and poster viewing 16:00 Role of magnetic fields in the mass loss of evolved stars – W. Vlemmings 22 16:30 VLTI/AMBER studies of the atmospheric structure and fundamental parameters of red giant and supergiant stars – B. Arroyo-Torres 23 16:45 Results from the VLTI/MIDI AGB Large Program – C. Paladini 24 17:00 Interferometric imaging diagnostics of circumstellar environments – X. Haubois 25 Living together 17:15 Observations of binaries (with focus on PPN and PN) – Olivier Chesneau/Eric Lagadec 26 17:45 End of the first day 18:30 Vienna city walking tour 6 SCIENTIFIC PROGRAMME TUESDAY, July 29, 2014 09:00 Announcements 09:05 PAH formation in O-rich evolved stars – L. Guzman-Ramirez 27 09:20 Duplicity and its part in AGB evolution and nucleosynthesis – R. Izzard 28 09:50 Chemical abundance analysis of the symbiotic red giants – C. Galan 29 10:05 Binarity among carbon-enriched stars – S. Van Eck 30 10:20 The Circumstellar Environment of R Coronae Borealis: White Dwarf Merger or Final Helium Shell Flash? – G.C. Clayton 31 10:35 Interferometrically resolving post-AGB disks – M. Hillen 32 10:50 Coffee break and poster viewing 11:20 Smoothed Particle Hydrodynamics (SPH) models of AGB stars in binaries – S. Mohamed 33 11:50 Winds of binary AGB stars as observed by Herschel – A. Mayer 34 12:05 Shaping the outflows of binary AGB stars – S. Ramstedt 35 12:20 Lunch break 14:00 Shaping circumstellar environments of evolved stars: CSM-ISM interaction – N. Cox 36 14:30 Asymmetries in AGB stars: new results from aperture masking techniques – C. Lykou 37 14:45 VLT/NACO imaging of the nearest AGB star L2 Puppis – M. Montarges 38 What is left 15:00 Calibrating the role of TP-AGB stars in the cosmic matter cycle – P. Marigo 39 15:30 Coffee break and poster viewing 16:10 Post-AGB stars in the Magellanic Clouds as tracers of the s-process nucleosynthesis – K. De Smedt 40 16:25 Nucleosynthesis in Super-AGB stars – C. Doherty 41 16:40 Extra mixing and isotope ratios in AGB stars – R.J. Stancliffe 42 16:55 Modeling stellar interiors and nucleosynthesis of AGB stars – O. Straniero 43 17:25 The role of AGB stars in the cosmic fluorine production – H. Jönsson 44 17:40 End of the second day 19:00 Public talk: Rote Riesen, weiße Zähne und ALMA – M. Maercker 7 SCIENTIFIC PROGRAMME WEDNESDAY, July 30, 2014 09:00 Announcements 09:10 Does the main component of the s-process in AGB stars constrain the neutron source in the 13C-pocket? – O. Trippella 45 09:25 The challenges of abundance analysis for long period variables – T. Lebzelter 46 09:40 Nucleosynthesis in AGB stars traced by isotopic ratios – R. De Nutte 47 09:55 The 12CO/13CO-ratio in AGB stars of different chemical type – H. Olofsson 48 10:10 The dust return from AGB stars in nearby galaxies – S. Srinivasan 49 10:40 Coffee break and poster viewing Old & new dust 11:10 Dust formation in AGB stars – I. Cherchneff 50 11:40 End of the third day 12:30 Leaving for Wachau trip 8 SCIENTIFIC PROGRAMME THURSDAY, July 31, 2014 09:00 Announcements 09:05 Dust formation in the inner wind of the oxygen-rich AGB star IK Tau – D. Gobrecht 51 09:20 Interferometric constraints on molecule and dust formation in oxygen-rich Mira stars – M. Wittkowski 52 09:35 Wind acceleration in AGB stars: Solid ground and loose ends – S. Höfner 53 10:05 Exploring mass-loss in M-type AGB stars – S. Bladh 54 10:20 Amorphous aluminum oxide grains as the wind drivers in WHya – T. Khouri 55 10:35 The problematically short superwind of OH/IR stars - Probing the outflow with the 69 micrometer spectral band of forsterite – B. De Vries 56 10:50 Coffee break and poster viewing 11:20 Dust production from sub-solar to super-solar metallicity in Thermally Pulsing AGB Stars – A. Nanni 57 11:35 EvolutioN of Grains in the MAgellanic clouds (ENiGMA) – M. Meixner 58 11:50 Dust in the early universe and the contribution of AGB stars – R. Schneider 59 12:20 Lunch break 14:00 Metallicity dependence of oxygen-rich dust around evolved stars – O. Jones 60 14:15 How important are metal-poor AGB stars as cosmic dust producers? – L. Mattsson 61 Resolved and unresolved Populations 14:30 Nucleosynthesis in Helium-enriched AGB models: Implications for Globular Clusters – A. Karakas 62 14:45 Results from the PHAT project – L. Girardi 63 15:15 Constraining Mass Loss & Lifetimes of Low Mass, Low Metallicity AGB Stars – P. Rosenfield 64 15:30 Coffee break and poster viewing 16:10 The photometric and stellar properties of carbon stars in the Small Magellanic Cloud – G.C. Sloan 65 16:25 Post-AGB stars in the Magellanic Clouds – D. Kamath 66 16:40 Presenting Optical Spectra of AGB Stars in M31 – K. Hamren 67 16:55 AGB populations of LG dwarf spheroidals – J. Menzies 68 17:25 An Infrared Census of Extreme AGB Stars in Nearby Dwarf Galaxies – M. Boyer 69 17:40 End of the fourth day 19:30 Conference dinner at the University Observatory 9 SCIENTIFIC PROGRAMME FRIDAY, August 01, 2014 09:00 Announcements 09:05 Model constraints from observations of active galaxies – R. Riffel 70 09:35 Probing the Sagittarius Tidal Streams with LPV Carbon Stars – A. Huxor 71 09:50 Phase-lag distances of OH masing AGB stars – D. Engels 72 Perspectives 10:05 Stellar astrophysics with the ELT – G. Bono 73 10:35 Coffee break and poster viewing 11:05 MIR/FIR space prospects for research on AGB stars – J. Blommaert 74 11:35 E-ELT MIR and MATISSE prospects for AGB-stars – J.
Load more

Recommended publications
  • Detection of an Asymmetry in the Envelope of the Carbon Mira R Fornacis Using VLTI/MIDI,
    A&A 544, L5 (2012) Astronomy DOI: 10.1051/0004-6361/201219831 & c ESO 2012 Astrophysics Letter to the Editor Detection of an asymmetry in the envelope of the carbon Mira R Fornacis using VLTI/MIDI, C. Paladini1, S. Sacuto2, D. Klotz1, K. Ohnaka3, M. Wittkowski4,W.Nowotny1, A. Jorissen5, and J. Hron1 1 University of Vienna, Dept. of Astrophysics, Türkenschanzstrasse 17, 1180 Vienna, Austria e-mail: [email protected] 2 Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden 3 Max-Planck-Institut für Radioastronomie, 53121 Bonn, Germany 4 ESO, Karl-Schwarzschild-Str. 2, 85748 Garching bei München, Germany 5 Institut d’Astronomie et d’Astrophysique, Université Libre de Bruxelles, CP 226, Boulevard du Triomphe, 1050 Bruxelles, Belgium Received 17 June 2012 / Accepted 12 July 2012 ABSTRACT Aims. We present a study of the envelope morphology of the carbon Mira R For with VLTI/MIDI. This object is one of the few asymptotic giant branch (AGB) stars that underwent a dust-obscuration event. The cause of such events is still a matter of discussion. Several symmetric and asymmetric scenarios have been suggested in the literature. Methods. Mid-infrared interferometric observations were obtained separated by two years. The observations probe different depths of the atmosphere and cover different pulsation phases. The visibilities and the differential phases were interpreted using GEM-FIND, a tool for fitting spectrally dispersed interferometric observations with the help of wavelength-dependent geometric models. Results. We report the detection of an asymmetric structure revealed through the MIDI differential phase. This asymmetry is observed at the same baseline and position angle two years later.
    [Show full text]
  • Meridional Flow Velocities on Solar-Like Stars with Known Activity
    Meridional flow velocities on solar-like stars with known activity cycles Dilyara Baklanova∗ Crimean Astrophysical Observatory, Nauchny 298409, Crimea Sergei Plachinda Crimean Astrophysical Observatory, Nauchny 298409, Crimea Abstract The direct measurements of the meridional flow velocities on stars are impossible today. To evaluate the meridional flow velocities on solar-like stars with stable activity periods, we supposed that during the stellar Hale cycle the matter on surfaces of stars passes the meridional way equivalent to 2πR⋆. We present here the dependence of the mean meridional flow velocity on Rossby number, which is an effective parameter of the stellar magnetic dynamo. Keywords: stars: solar-like; stars: activity; stars: Hale cycle; stars: meridional flow velocity 1. Introduction 2. Parameters of stars Today the physics of the large-scale flows on the Sun We selected stars with well-known activity periods. In and stars are intensively simulated by scientists to deter- the Table 1 and Table 2 we summarized the physical pa- mine the detailed mechanisms of activity cycles. Recent rameters of the stars that we have got from literature. results and bibliography are presented, for example, in the The names of the stars are listed in the first columns of papers by Upton and Hathaway (2014), Zhao et al. (2013), the Tables. Columns 2-4 in the Table 1 contain magnitude Guerrero et al. (2013), Moss et al. (2013), Kitchatinov V , spectral type and color index B − V . The rotation (2013), Kitchatinov and Olemskoy (2012). periods of the stars and the references are given in the 5th The empirical dependence of the mean meridional flow and 6th columns, the duration of activity cycles and the speed on the number of the 22-year Hale cycle (Plachinda references are given in the 7th and 8th columns.
    [Show full text]
  • 136, June 2008
    British Astronomical Association VARIABLE STAR SECTION CIRCULAR No 136, June 2008 Contents Group Photograph, AAVSO/BAAVSS meeting ........................ inside front cover From the Director ............................................................................................... 1 Eclipsing Binary News ....................................................................................... 4 Experiments in the use of a DSLR camera for V photometry ............................ 5 Joint Meeting of the AAVSO and the BAAVSS ................................................. 8 Coordinated HST and Ground Campaigns on CVs ............................... 8 Eclipsing Binaries - Observational Challenges .................................................. 9 Peer to Peer Astronomy Education .................................................................. 10 AAVSO Acronyms De-mystified in Fifteen Minutes ...................................... 11 New Results on SW Sextantis Stars and Proposed Observing Campaign ........ 12 A Week in the Life of a Remote Observer ........................................................ 13 Finding Eclipsing Binaries in NSVS Data ......................................................... 13 British Variable Star Associations 1848-1908 .................................................. 14 “Chasing Rainbows” (The European Amateur Spectroscopy Scene) .............. 15 Long Term Monitoring and the Carbon Miras ................................................. 18 Cataclysmic Variables from Large Surveys: A Silent Revolution
    [Show full text]
  • ASTRONOMY and ASTROPHYSICS Modelling the Spectral Energy
    Astron. Astrophys. 343, 466–476 (1999) ASTRONOMY AND ASTROPHYSICS Modelling the spectral energy distribution and SED variability of the Carbon Mira R Fornacis? A. Lobel1, J.G. Doyle1, and S. Bagnulo2 1 Armagh Observatory, College Hill, Armagh BT61 9DG, Ireland 2 Institut fur¨ Astronomie, Universitat¨ Wien, Turkenschanzstrasse¨ 17, A-1180 Wien, Austria Received 2 July 1998 / Accepted 2 December 1998 Abstract. We have developed a new method to determine the carbide (SiC) grains around stars with carbon-rich atmospheres, physical properties and the local circumstances of dust shells whereas a feature seen near 9.7 µm is ascribed to silicate grains surrounding Carbon- and Oxygen-rich stars for a given pulsa- in the environments of O-rich stars. Low resolution spectra of tion phase. The observed mid-IR dust emission feature(s), in Asymptotic Giant Branch (AGB) stars observed by IRAS in conjunction with IRAS BB photometry and coeval optical and the mid-1980 s enabled a classification of these features (Little- near-IR BB photometry, are modelled from radiative transport Marenin & Little 1988) and to attempt the modelling of their for- calculations through the dust shell using a grid of detailed syn- mation conditions. To that end various sophisticated numerical thetic model input spectra for M-S-C giants. From its application codes have been developed since. A brief review of their gradual to the optical Carbon Mira R For we find that the temperature improvements over the years and a performance comparison of of the inner shell boundary exceeds 1000 K, ranging between three modern codes was discussed by Ivezic´ et al.
    [Show full text]
  • Thesis, Anton Pannekoek Institute, Universiteit Van Amsterdam
    UvA-DARE (Digital Academic Repository) The peculiar climates of ultra-hot Jupiters Arcangeli, J. Publication date 2020 Document Version Final published version License Other Link to publication Citation for published version (APA): Arcangeli, J. (2020). The peculiar climates of ultra-hot Jupiters. General rights It is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulations If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: https://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. UvA-DARE is a service provided by the library of the University of Amsterdam (https://dare.uva.nl) Download date:09 Oct 2021 Jacob Arcangeli of Ultra-hot Jupiters The peculiar climates The peculiar climates of Ultra-hot Jupiters Jacob Arcangeli The peculiar climates of Ultra-hot Jupiters Jacob Arcangeli © 2020, Jacob Arcangeli Contact: [email protected] The peculiar climates of Ultra-hot Jupiters Thesis, Anton Pannekoek Institute, Universiteit van Amsterdam Cover by Imogen Arcangeli ([email protected]) Printed by Amsterdam University Press ANTON PANNEKOEK INSTITUTE The research included in this thesis was carried out at the Anton Pannekoek Institute for Astronomy (API) of the University of Amsterdam.
    [Show full text]
  • Abstracts of Extreme Solar Systems 4 (Reykjavik, Iceland)
    Abstracts of Extreme Solar Systems 4 (Reykjavik, Iceland) American Astronomical Society August, 2019 100 — New Discoveries scope (JWST), as well as other large ground-based and space-based telescopes coming online in the next 100.01 — Review of TESS’s First Year Survey and two decades. Future Plans The status of the TESS mission as it completes its first year of survey operations in July 2019 will bere- George Ricker1 viewed. The opportunities enabled by TESS’s unique 1 Kavli Institute, MIT (Cambridge, Massachusetts, United States) lunar-resonant orbit for an extended mission lasting more than a decade will also be presented. Successfully launched in April 2018, NASA’s Tran- siting Exoplanet Survey Satellite (TESS) is well on its way to discovering thousands of exoplanets in orbit 100.02 — The Gemini Planet Imager Exoplanet Sur- around the brightest stars in the sky. During its ini- vey: Giant Planet and Brown Dwarf Demographics tial two-year survey mission, TESS will monitor more from 10-100 AU than 200,000 bright stars in the solar neighborhood at Eric Nielsen1; Robert De Rosa1; Bruce Macintosh1; a two minute cadence for drops in brightness caused Jason Wang2; Jean-Baptiste Ruffio1; Eugene Chiang3; by planetary transits. This first-ever spaceborne all- Mark Marley4; Didier Saumon5; Dmitry Savransky6; sky transit survey is identifying planets ranging in Daniel Fabrycky7; Quinn Konopacky8; Jennifer size from Earth-sized to gas giants, orbiting a wide Patience9; Vanessa Bailey10 variety of host stars, from cool M dwarfs to hot O/B 1 KIPAC, Stanford University (Stanford, California, United States) giants. 2 Jet Propulsion Laboratory, California Institute of Technology TESS stars are typically 30–100 times brighter than (Pasadena, California, United States) those surveyed by the Kepler satellite; thus, TESS 3 Astronomy, California Institute of Technology (Pasadena, Califor- planets are proving far easier to characterize with nia, United States) follow-up observations than those from prior mis- 4 Astronomy, U.C.
    [Show full text]
  • View & Download
    78-8970 70MM REFRACTOR WITH REALVOICE™ OUTPUT INSTRUCTION MANUAL 78-8930 76MM REFLECTOR MANUEL D’INSTRUCTIONS MANUAL DE INSTRUCCIONES BEDIENUNGSANLEITUNG MANUALE DI ISTRUZIONI MANUAL DE INSTRUÇÕES 78-8945 114MM REFLECTOR Lit.#: 98-0965/06-07 PAGE GUIDE ENGLISH ............... 4 Catalog Index........... 18 FrANÇAIS.............. 34 ESPAÑOL ............... 50 DEUTSCH............... 66 ITALIANO............... 82 PORTUGUÊS........... 98 ENGLISH Congratulations on the purchase of your Bushnell Discoverer Telescope with Real Voice Output! This is one of the first telescopes ever created that actually speaks to you to educate you about the night sky. Consider this feature as your personal astronomy assistant. After reading through this manual and preparing for your observing session as outlined in these pages you can start enjoying the Real Voice Output feature by doing the following: To activate your telescope, simply turn it on! The Real Voice Output feature is built in to the remote control handset. Along the way the telescope will speak various helpful comments during the alignment process. Once aligned, the Real Voice Output feature will really shine anytime the enter key is depressed when an object name or number is displayed at the bottom right of the LCD viewscreen. That object description will be spoken to you as you follow along with the scrolling text description. If at anytime you wish to disable the speaking feature, you can cancel the speech by pressing the “Back” button on the remote control keypad. It is our sincere hope that you will enjoy this telescope for years to come! NEVER LOOK DIRECTLY AT THE SUN ❂ WITH YOUR TELESCOPE PERMANENT DAMAGE TO YOUR EYES MAY OCCUR WHERE DO I START? Your Bushnell telescope can bring the wonders of the universe to your eye.
    [Show full text]
  • Binocular Challenges
    This page intentionally left blank Cosmic Challenge Listing more than 500 sky targets, both near and far, in 187 challenges, this observing guide will test novice astronomers and advanced veterans alike. Its unique mix of Solar System and deep-sky targets will have observers hunting for the Apollo lunar landing sites, searching for satellites orbiting the outermost planets, and exploring hundreds of star clusters, nebulae, distant galaxies, and quasars. Each target object is accompanied by a rating indicating how difficult the object is to find, an in-depth visual description, an illustration showing how the object realistically looks, and a detailed finder chart to help you find each challenge quickly and effectively. The guide introduces objects often overlooked in other observing guides and features targets visible in a variety of conditions, from the inner city to the dark countryside. Challenges are provided for viewing by the naked eye, through binoculars, to the largest backyard telescopes. Philip S. Harrington is the author of eight previous books for the amateur astronomer, including Touring the Universe through Binoculars, Star Ware, and Star Watch. He is also a contributing editor for Astronomy magazine, where he has authored the magazine’s monthly “Binocular Universe” column and “Phil Harrington’s Challenge Objects,” a quarterly online column on Astronomy.com. He is an Adjunct Professor at Dowling College and Suffolk County Community College, New York, where he teaches courses in stellar and planetary astronomy. Cosmic Challenge The Ultimate Observing List for Amateurs PHILIP S. HARRINGTON CAMBRIDGE UNIVERSITY PRESS Cambridge, New York, Melbourne, Madrid, Cape Town, Singapore, Sao˜ Paulo, Delhi, Dubai, Tokyo, Mexico City Cambridge University Press The Edinburgh Building, Cambridge CB2 8RU, UK Published in the United States of America by Cambridge University Press, New York www.cambridge.org Information on this title: www.cambridge.org/9780521899369 C P.
    [Show full text]
  • Download This Issue (Pdf)
    Volume 46 Number 1 JAAVSO 2018 The Journal of the American Association of Variable Star Observers Optical Flares and Quasi-Periodic Pulsations on CR Draconis during Periastron Passage Upper panel: 2017-10-10-flare photon counts, time aligned with FFT spectrogram. Lower panel: FFT spectrogram shows time in UT seconds versus QPP periods in seconds. Flares cited by Doyle et al. (2018) are shown with (*). Also in this issue... • The Dwarf Nova SY Cancri and its Environs • KIC 8462852: Maria Mitchell Observatory Photographic Photometry 1922 to 1991 • Visual Times of Maxima for Short Period Pulsating Stars III • Recent Maxima of 86 Short Period Pulsating Stars Complete table of contents inside... The American Association of Variable Star Observers 49 Bay State Road, Cambridge, MA 02138, USA The Journal of the American Association of Variable Star Observers Editor John R. Percy Kosmas Gazeas Kristine Larsen Dunlap Institute of Astronomy University of Athens Department of Geological Sciences, and Astrophysics Athens, Greece Central Connecticut State University, and University of Toronto New Britain, Connecticut Toronto, Ontario, Canada Edward F. Guinan Villanova University Vanessa McBride Associate Editor Villanova, Pennsylvania IAU Office of Astronomy for Development; Elizabeth O. Waagen South African Astronomical Observatory; John B. Hearnshaw and University of Cape Town, South Africa Production Editor University of Canterbury Michael Saladyga Christchurch, New Zealand Ulisse Munari INAF/Astronomical Observatory Laszlo L. Kiss of Padua Editorial Board Konkoly Observatory Asiago, Italy Geoffrey C. Clayton Budapest, Hungary Louisiana State University Nikolaus Vogt Baton Rouge, Louisiana Katrien Kolenberg Universidad de Valparaiso Universities of Antwerp Valparaiso, Chile Zhibin Dai and of Leuven, Belgium Yunnan Observatories and Harvard-Smithsonian Center David B.
    [Show full text]
  • Newsletter 2010/4 2010 November INDEX from the Director V1243 Aql
    Newsletter 2010/4 2010 November From the Director V1243 Aql and more Tom Richards [email protected] Most of this year has been an observing desert for me. It began in March with a brief power cut, which re- started the RA drive (I had it suspended), driving the telescope into the pier and wrecking the RA drive motor. When I got that fixed, my camera's shutter gave out. Mind you, the weather was solid cloud for all those months, so I got a perverse satisfaction from that. Lyn and I are building a new home further out of Melbourne, at Pretty Hill, Kangaroo Ground; so I decided I may as well dismantle the observatory and shift it to Pretty Hill. That I did, with the help of family and good astro- nomical friends includ- ing Bernard Heathcote. The dome is now sitting in bits on the grass in front of the new obser- vatory, which is integral with the house. I aim to get it reassembled and craned into place by Christmas. Dismantling the old ob- servatory. Plenty of will- ing helpers with the su- pervisor in the fore- ground. INDEX 1 From the Director 3 Thoughts from the Editor 5 Stars of the Quarter Rod Stubbings & Others 8 Astronomy in the Desert Margaret Streamer 13 Eclipsing Binary Modelling Col Bembrick 15 BSM South at Ellinbank Peter Nelson 17 A New UG WZ Candidate in Pisces Stephen Hovell 18 The SPM4 Catalogue—Applicability to VSS Work Mati Morel 20 Some Summer Mira & SR Targets Stan Walker 22 CCD Column—How do Photometry Tools Compare? Tom Richard 25 Z Chamaeleontis—an Identification Problem Stan Walker 26 High Precision UBVRI Transformations Stan Walker 36 Call for Research Grant Applications 37 About Variable Stars South And some important parts of the new observatory.
    [Show full text]
  • Physical and Chemical Aspects of Late Stages of Stellar Evolution
    First NCAC Symposium: Physical and chemical aspects of late stages of stellar evolution First NCAC Symposium on Physical and chemical aspects of late stages of stellar evolution Warsaw, Poland 29 August - 1 September, 2011 organized by The Nicolaus Copernicus Astronomical Centre of the Polish Academy of Sciences 1 First NCAC Symposium: Physical and chemical aspects of late stages of stellar evolution 2 First NCAC Symposium: Physical and chemical aspects of late stages of stellar evolution SPONSORS Astro-PF Polish-French collaboration in astrophysics Nicolaus Copernicus Astronomical Centre of Polish Academy of Sciences 1 First NCAC Symposium: Physical and chemical aspects of late stages of stellar evolution 2 First NCAC Symposium: Physical and chemical aspects of late stages of stellar evolution TABLE OF CONTENTS SOC & LOC 4 List of Participants 5 Social events 9 Program 10 Session I: Evolved stars, pulsations and mass loss (1) 12 Session II: Evolved stars, pulsations and mass loss (2) 16 Session III: Interacting binaries and circumstellar discs (1) 25 Session IV: Interacting binaries and circumstellar discs (2) 31 Session Va: Interacting binaries and circumstellar discs (3) 37 Session Vb: Chemistry of evolved stars and their environment 39 Session VI: Circumstellar molecules and dust (1) 44 Session VII: Circumstellar molecules and dust (2) 53 Posters (by author in alphabetic order) 56 Useful information 74 Notes 78 3 First NCAC Symposium: Physical and chemical aspects of late stages of stellar evolution Scientific Organizing Committee
    [Show full text]
  • BAV Rundbrief Nr. 1 (2010)
    BAV Rundbrief 59. Jahrgang Nr. 1 (2010) ISSN 0405-5497 W. Braune Liebe BAVer 1 K. Bernhard / P. Frank Neue Elemente der Bedeckungsveränderlichen GSC 6281-246 (Brh V149) und GSC 2161-1310 (Brh V155) 2 H.-M. Steinbach RY Vulpeculae ist konstant 5 G. Monninger Das BAV-Programm der Delta-Scuti-Veränderlichen - Teil 1 7 R. Bücke Beobachtung der Radialgeschwindigkeitsperiode des Be-Sterns 12 Gamma Cassiopeiae E. Pollmann / Th. Rivinius H-alpha-Beobachtungen am Doppelsternsystem Zeta Tau 15 J. Hambsch / H. Hautecler ASAS J224349+0809.5 : eine neu entdeckte Zwergnova 21 H.-G. Diederich ES Aquilae wird im Ausbruch dunkler 25 P. Lehmann Visuelle Farbschätzungen heute? 28 K. Bernhard Chaos bei den Veränderlichen 31 Stern der Saison M. Schabacher WW Cassiopeiae - ein vermeintlich unregelmäßiger Veränderlicher 36 R. Winkler Der neue Programmstern My Cep 39 Aus der Literatur W. Grimm Aus den IBVS 40 W. Braune Zu Vergleichsternhelligkeiten für Epsilon Aurigae in Sterne und Weltraum 12/2008 42 Aus der BAV St. Bakan Veränderlichenabend bei der GvA Hamburg 44 J. Hübscher Erweiterte Darstellung der Ephemeriden im BAV Circular 2010 45 J. Hübscher Lichtkurvenblätter unserer Beobachter 46 J. Hübscher Aus der Geschäftsführung 48 W. Vollmann Fotometrie an Delta Cephei mit Digitalkamera 49 J. Neumann PS Gemini - ein weißer SR-Stern? 50 H.-G. Diederich Wie wähle ich meinen ersten Veränderlichen aus? 51 J. Neumann Erfahrungs-Testbericht über neue Spektive von Praktica und Exakta 54 D. Bannuscher Tiefere Einblicke dank Neuverspiegelung 56 W. Braune Versand des BAV Rundbriefes 4/2009 für Briefmarkenfreunde 57 Aus den Sektionen F. Walter Bedeckungsveränderliche: Beobachtungskampagne Epsilon Aurigae erfolgreich 58 F.
    [Show full text]