Volume 48 number 1 — 2020

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Articles in This Issue

• Editorial

• Dual-Anonymous Review

  Nancy D. Morrison

• Variable Star Research

• QZ Carinae—Orbit of the Two Binary Pairs

  Mark Blackford, Stan Walker, Edwin Budding, Greg Bolt, Dave Blane, Terry Bohlsen, Anthony Moffat, Herbert Pablo, Andrzej Pigulski, Adam Popowicz, Gregg Wade, Konstanze Zwintz

• A Note on Bimodal Pulsating Red Giants

  John R. Percy

• The Photometric Period of Nova V2891 Cygni

  Richard E. Schmidt

• The Reclassification of NSV 1586 from a Suspected Cepheid Star to a UG Class System

  Stephen M. Brincat, Charles Galdies, Kevin Hills, Winston Grech

• Disk Instabilities Caused the 2018 Outburst of AG Draconis

  Helena M. Richie, W. M. Wood-Vasey, Lou Coban

• Continued Period Changes in BW Vulpeculae

  David E. Cowall, Brian A. Skiff, Andrew P. Odell

• ASAS-SN Observations of Long Secondary Periods in Pulsating Red Giants

  John Percy, Anthony Mark Wallace

• HD 121620: A Previously Unreported Variable Star with Unusual Properties

  Roy A. Axelsen

• CCD Photometry, Light Curve Modeling, and Period Study of the Overcontact Binary Systems NSVS 7245866 and V685 Pegasi

  Kevin B. Alton

• Period Analysis of All-Sky Automated Survey for Supernovae (ASAS-SN) Data on a Sample of “Irregular” Pulsating Red Giants

  John R. Percy

• The Photometric Period of V392 Persei (Nova Persei 2018)

  Richard E. Schmidt

• Light Curve Asymmetries in Three Short Period Eclipsing Binary Stars

  Gage Hahs, Charlyn Ortmann, Vayujeet Gokhale

• TYC 2402-0643-1: First Precision Photometric Observations and Analyses of the Totally Eclipsing, Solar Type Binary

  Ronald G. Samec, Daniel B. Caton, Danny R. Faulkner

• Education and Outreach

• Smartphone Astrophotography: A Useful Approach for Outreach and Education

  Sara Bimo

• Instruments, Methods, and Techniques

• A Gallery of Sky Brightness Curves from the January 2019 Total Lunar Eclipse

  Jennifer J. Birriel, J. Kevin Adkins, Andrea Bertolo, Rainer Ehlert, Michael McKeag, Salvador J. Ribas, Anthony Tekaatch

• Variable Star Data

• Recent Maxima of 77 Short Period Pulsating Stars

  Gerard Samolyk

• Recent Minima of 216 Eclipsing Binary Stars

  Gerard Samolyk

• 35,000 Radial Velocities for 348 Stars from the Tennessee State University Automatic Spectroscopic Telescope

  Joel A. Eaton

• Abstracts

• 50th Anniversary of the Moon Landing, Personal Stories from Inside the Mission Control Center (Abstract)

  Gordon Myers

• Novae Erupting within Symbiotic Binaries: Getting Ready for Coming Fireworks (Abstract)

  Ulisse Munari

• The Frontiers of RR Lyrae and Cepheid Variable Star Research (Abstract)

  Karen Kinemuchi

• Applying Transformations (Abstract)

  George Silvis

• O–C Diagrams (Abstract)

  Gary Billings

• AAVSO Bright Star Monitor Update (Abstract)

  Ken Menzies, Mike Nicholas

• Czech Pulsational and Exoplanetary Group (Abstract)

  Marek Skarka

• An Introduction to Observing Sections (Abstract)

  Bert Pablo

• R Aqr—the 2022 Eclipse Has Started! (Abstract)

  Lee Anne Willson

• The Challenges of Updating VSX in the Survey Era (Abstract)

  Sebastián Otero

• How to Use VSX (Abstract)

  Sebastián Otero

• Human and Environmental Effects of Light Pollution (Abstract)

  Mario Motta

• Period Changes and the Evolution of Type II Cepheids (Abstract)

  Horace A. Smith, Wayne Osborn, Grzegorz Kopacki, Pradip Karmakar, Barton Pritzl, Nathan De Lee, Charles Kuehn, Aaron LaCluyze, Katie Rabidoux

• Modeling Cepheid Variable Stars Using the Open-Source MESA Code (Abstract)

  Joyce A. Guzik, Ebraheem Farag, Jakub Ostrowski, Nancy Evans, Hilding Neilson, Sofia Moschou, Jeremy Drake

• Variable Stars in the LSST Era (Abstract)

  Ardis Herrold

• The Denouement of the Galactic Novae (Abstract)

  Frederick M. Walter

• Period Change Behavior of the Eclipsing Binary LS Persei (Abstract)

  Gary Billings

• Planning a Visual Observing Program (Abstract)

  Michael Cook

• First Discovery of the Galactic Plane eXoplanet Survey: GPX-1b, a Transiting 15 MJup Companion to a Rapidly Rotating F-type Star (Abstract)

  Paul Benni, Artem Burdanov, Eugene Sokov, Khalid Barkaoui, GPX follow-up team, SOPHIE team, Vadim Krushinsky

• Update on Professor and Student Survey of NSV RR Lyrae Variable Stars (Abstract)

  Melanie Crowson, David Syndergaard

• SPP Observing Section (Abstract)

  Melanie Crowson

• Transform Computations (Abstract)

  George Silvis

• A New Study of the Variable Star Population in the Hercules Globular Cluster (M13; NGC 6205) (Abstract)

  Dan J. Deras, A. Arellano Ferro, C. Lazaro, I. H. Bustos Fierro, J. H. Calderon, S. Muneer, Sunetra Giridhar

• Variable Stars in Palomar 13: an Evaporating Globular Cluster (Abstract)

  Mario Alberto Yepez Rivera, Armando Arellano Ferro, Klaus-Peter Schröder, S. Muneer, Sunetra Giridhar, Christine Allen

• AAVSO Contributions to Year 1 of TESS (Abstract)

  Dennis Conti

• The Exoplanet Transit Survey and the AAVSO (Abstract)

  Robert Zellem, Anya Biferno, Ethan Blaser, Alexandra Iterralde, Kyle Pearson, John Engelke

• The New Mittelman Observatory—A Professional Quality Robotic Telescope (Abstract)

  Arne Henden

• Dorrit Hoffleit, Raymond Berg, and the “Unnamed Fleming Variables”: An Epilogue (Abstract)

  Kristine Larsen

• Long-time Observations of Visual Solar Observers (Abstract)

  Rodney H. Howe

• PYTHON Pipeline to Simultaneously Extract Exoplanet and Variable Star Data from TESS Ground-based Followup Observations (Abstract)

  Isobel Snellenberger, Madelyn Madsen, Matt Craig

• PYTHON for Variable Star Astronomy: A Status Report (Abstract)

  Matt Craig, Isobel Snellenberger, Madelyn Madsen

• Student Involvement in Exoplanet Science (Abstract)

  Pat Boyce

• Examples of Variable Stars found in the GNAT/MOTESS Variable Star Catalog (Abstract)

  Roy A. Tucker, Eric R. Craine, Adam L. Kraus

• Measuring Decay Timescales of Downflows in Solar Flare Footpoints: Testing the One-minute Theory (Abstract)

  Alexander K. Beltzer-Sweeney, Elizabeth Butler, Adam Kowalski, Gianna Cauzzi

• High-precision Radial Velocity Measurements of Classical Cepheids (Abstract)

  Richard I. Anderson

• Errata

• Erratum: Methods for O–C (Observed Minus Computed) Diagrams and for the Determination of Light Elements of Variable Stars with Linear and Second Order Polynomial Ephemerides

  Roy Andrew Axelsen