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A noninteracting lo...
A noninteracting low-mass black hole–giant star binary system
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- Thompson, Todd A. (author)
- Ohio State University,Institute for Advanced Study, Princeton
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- Kochanek, Christopher S. (author)
- Ohio State University
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- Stanek, Krzysztof Z. (author)
- Ohio State University
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- Badenes, Carles (author)
- University of Barcelona,University of Pittsburgh
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- Post, Richard S. (author)
- Post Observatory, Lexington
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- Jayasinghe, Tharindu (author)
- Ohio State University
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- Latham, David W. (author)
- Harvard–Smithsonian Center for Astrophysics
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- Bieryla, Allyson (author)
- Harvard–Smithsonian Center for Astrophysics
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- Esquerdo, Gilbert A. (author)
- Harvard–Smithsonian Center for Astrophysics
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- Berlind, Perry (author)
- Harvard–Smithsonian Center for Astrophysics
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- Calkins, Michael L. (author)
- Harvard–Smithsonian Center for Astrophysics
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- Tayar, Jamie (author)
- Ohio State University,University of Hawaii at Manoa
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- Lindegren, Lennart (author)
- Lund University,Lunds universitet,Astronomi - Har omorganiserats,Institutionen för astronomi och teoretisk fysik - Har omorganiserats,Naturvetenskapliga fakulteten,Lund Observatory - Has been reorganised,Department of Astronomy and Theoretical Physics - Has been reorganised,Faculty of Science
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- Johnson, Jennifer A. (author)
- Ohio State University
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- Holoien, Thomas W.S. (author)
- Carnegie Observatories
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- Auchettl, Katie (author)
- University of Copenhagen,Ohio State University
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- Covey, Kevin (author)
- Western Washington University
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(creator_code:org_t)
- American Association for the Advancement of Science (AAAS), 2019
- 2019
- English 4 s.
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In: Science. - : American Association for the Advancement of Science (AAAS). - 0036-8075 .- 1095-9203. ; 366:6465, s. 637-640
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http://dx.doi.org/10...
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http://arxiv.org/pdf...
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https://doi.org/10.1...
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Abstract
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- Black hole binary systems with companion stars are typically found via their x-ray emission, generated by interaction and accretion. Noninteracting binaries are expected to be plentiful in the Galaxy but must be observed using other methods. We combine radial velocity and photometric variability data to show that the bright, rapidly rotating giant star 2MASS J05215658+4359220 is in a binary system with a massive unseen companion. The system has an orbital period of ~83 days and near-zero eccentricity. The photometric variability period of the giant is consistent with the orbital period, indicating star spots and tidal synchronization. Constraints on the giant’s mass and radius imply that the unseen companion is 3:3þ - 2 0 : : 8 7 solar masses, indicating that it is a noninteracting low-mass black hole or an unexpectedly massive neutron star.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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Thompson, Todd A ...
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Kochanek, Christ ...
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Stanek, Krzyszto ...
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Badenes, Carles
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Post, Richard S.
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Jayasinghe, Thar ...
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Latham, David W.
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Bieryla, Allyson
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Esquerdo, Gilber ...
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Berlind, Perry
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Calkins, Michael ...
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Tayar, Jamie
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Lindegren, Lenna ...
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Johnson, Jennife ...
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Holoien, Thomas ...
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Auchettl, Katie
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Covey, Kevin
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