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A noninteracting lo...
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Thompson, Todd A.Ohio State University,Institute for Advanced Study, Princeton
(author)
A noninteracting low-mass black hole–giant star binary system
- Article/chapterEnglish2019
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American Association for the Advancement of Science (AAAS),2019
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4 s.
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LIBRIS-ID:oai:lup.lub.lu.se:b3776409-b1d5-4b33-9bbc-ddc97adf4424
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https://lup.lub.lu.se/record/b3776409-b1d5-4b33-9bbc-ddc97adf4424URI
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https://doi.org/10.1126/science.aau4005DOI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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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.
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Kochanek, Christopher S.Ohio State University
(author)
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Stanek, Krzysztof Z.Ohio State University
(author)
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Badenes, CarlesUniversity of Barcelona,University of Pittsburgh
(author)
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Post, Richard S.Post Observatory, Lexington
(author)
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Jayasinghe, TharinduOhio State University
(author)
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Latham, David W.Harvard–Smithsonian Center for Astrophysics
(author)
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Bieryla, AllysonHarvard–Smithsonian Center for Astrophysics
(author)
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Esquerdo, Gilbert A.Harvard–Smithsonian Center for Astrophysics
(author)
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Berlind, PerryHarvard–Smithsonian Center for Astrophysics
(author)
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Calkins, Michael L.Harvard–Smithsonian Center for Astrophysics
(author)
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Tayar, JamieOhio State University,University of Hawaii at Manoa
(author)
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Lindegren, LennartLund 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(Swepub:lu)astr-lli
(author)
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Johnson, Jennifer A.Ohio State University(Swepub:lu)je1014jo
(author)
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Holoien, Thomas W.S.Carnegie Observatories
(author)
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Auchettl, KatieUniversity of Copenhagen,Ohio State University
(author)
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Covey, KevinWestern Washington University
(author)
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Ohio State UniversityInstitute for Advanced Study, Princeton
(creator_code:org_t)
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In:Science: American Association for the Advancement of Science (AAAS)366:6465, s. 637-6400036-80751095-9203
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