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- Joshua D Thomas
- Department of Physics, Clarkson University, 8 Clarkson Ave, Potsdam, NY 13699, USA
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- Noel D Richardson
- Department of Physics and Astronomy, Embry-Riddle Aeronautical University, 3700 Willow Creek Road, Prescott, AZ 86301, USA
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- J J Eldridge
- Department of Physics, University of Auckland, Private Bag 92019, Auckland 1010, New Zealand
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- Gail H Schaefer
- Mount Wilson Observatory, The CHARA Array of Georgia State University,Mount Wilson, CA 91023, USA
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- John D Monnier
- Department of Astronomy, University of Michigan, 1085 S. University, Ann Arbor, MI 48109, USA
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- Hugues Sana
- Institute of Astrophysics, Department of Physics and Astronomy, KU Leuven, Celestijnlaan 200D, B-3001 Leuven, Belgium
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- Anthony F J Moffat
- Centre de Recherche en Astrophysique du Québec, Département de physique, Université de Montréal, CP 6128, Succ. C.-V., Montréal, QC H3C 3J7
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- Peredur Williams
- Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
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- Michael F Corcoran
- CRESST II & X-ray Astrophysics Laboratory, Code 662, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
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- Ian R Stevens
- School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
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- Gerd Weigelt
- Max Planck Institute for Radio Astronomy, Auf dem Hügel 69, D-53121 Bonn, Germany
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- Farrah D Zainol
- School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
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- Narsireddy Anugu
- Department of Physics and Astronomy, University of Exeter, Exeter, Devon EX4 4QL, UK
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- Jean-Baptiste Le Bouquin
- Institut de Planétologie et d’Astrophysique de Grenoble, Université Grenoble Alpes CS 40700 38058 Grenoble Cédex 9, France
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- Theo ten Brummelaar
- Mount Wilson Observatory, The CHARA Array of Georgia State University,Mount Wilson, CA 91023, USA
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- Fran Campos
- Observatori Puig d’Agulles, Passatge Bosc 1, E-08759 Vallirana, Barcelona, Spain
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- Andrew Couperus
- Department of Physics, Clarkson University, 8 Clarkson Ave, Potsdam, NY 13699, USA
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- Claire L Davies
- Department of Physics and Astronomy, University of Exeter, Exeter, Devon EX4 4QL, UK
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- Jacob Ennis
- Department of Astronomy, University of Michigan, 1085 S. University, Ann Arbor, MI 48109, USA
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- Thomas Eversberg
- Schnörringen Telescope Science Institute, 51677 Wipperfürth, Waldbröl, Germany
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- Oliver Garde
- Observatoire de la Tourbiére, F-38690 CHABONS, France
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- Tyler Gardner
- Department of Astronomy, University of Michigan, 1085 S. University, Ann Arbor, MI 48109, USA
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- Joan Guarro Fló
- Balmes 2, E-08784 Piera, Barcelona, Spain
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- Stefan Kraus
- Department of Physics and Astronomy, University of Exeter, Exeter, Devon EX4 4QL, UK
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- Aaron Labdon
- Department of Physics and Astronomy, University of Exeter, Exeter, Devon EX4 4QL, UK
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- Cyprien Lanthermann
- Institute of Astrophysics, Department of Physics and Astronomy, KU Leuven, Celestijnlaan 200D, B-3001 Leuven, Belgium
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- Robin Leadbeater
- The Birches Torpenhow, Wigton, Cumbria CA7 1JF, UK
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- T Lester
- 1178 Mill Ridge Road, Arnprior, ON K7S3G8, Canada
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- Courtney Maki
- Department of Physics, Clarkson University, 8 Clarkson Ave, Potsdam, NY 13699, USA
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- Brendan McBride
- Department of Physics, Clarkson University, 8 Clarkson Ave, Potsdam, NY 13699, USA
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- Dogus Ozuyar
- Department of Astronomy and Space Sciences, Faculty of Science, Ankara University,06100 Tandogan, Ankara, Turkey
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- J Ribeiro
- Observatório do Centro de Informação Geoespacial do Exército - Lisboa, Lisboa, 1849-014, Portugal
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- Benjamin Setterholm
- Department of Astronomy, University of Michigan, 1085 S. University, Ann Arbor, MI 48109, USA
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- Berthold Stober
- VdS Section Spectroscopy, Germany
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- Mackenna Wood
- Department of Physics, Clarkson University, 8 Clarkson Ave, Potsdam, NY 13699, USA
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- Uwe Zurmühl
- D-31180 Giesen, Lower Saxony, Germany
抄録
<jats:title>ABSTRACT</jats:title> <jats:p>We present updated orbital elements for the Wolf–Rayet (WR) binary WR 140 (HD 193793; WC7pd + O5.5fc). The new orbital elements were derived using previously published measurements along with 160 new radial velocity measurements across the 2016 periastron passage of WR 140. Additionally, four new measurements of the orbital astrometry were collected with the CHARA Array. With these measurements, we derive stellar masses of $M_{\rm WR} = 10.31\pm 0.45 \, \mathrm{M}_\odot$ and $M_{\rm O} = 29.27\pm 1.14 \, \mathrm{M}_{\odot }$. We also include a discussion of the evolutionary history of this system from the Binary Population and Spectral Synthesis model grid to show that this WR star likely formed primarily through mass-loss in the stellar winds, with only a moderate amount of mass lost or transferred through binary interactions.</jats:p>
収録刊行物
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- Monthly Notices of the Royal Astronomical Society
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Monthly Notices of the Royal Astronomical Society 504 (4), 5221-5230, 2021-04-30
Oxford University Press (OUP)