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dc.contributor.authorOrosz, Jerome A.
dc.contributor.authorMcClintock, Jeffrey E.
dc.contributor.authorAufdenberg, Jason P.
dc.contributor.authorReid, Mark J.
dc.contributor.authorNarayan, Ramesh
dc.contributor.authorGou, Lijun
dc.contributor.authorRemillard, Ronald A
dc.date.accessioned2015-02-27T15:27:59Z
dc.date.available2015-02-27T15:27:59Z
dc.date.issued2011-11
dc.date.submitted2011-06
dc.identifier.issn0004-637X
dc.identifier.issn1538-4357
dc.identifier.urihttp://hdl.handle.net/1721.1/95721
dc.description.abstractCygnus X-1 is a binary star system that is comprised of a black hole and a massive giant companion star in a tight orbit. Building on our accurate distance measurement reported in the preceding paper, we first determine the radius of the companion star, thereby constraining the scale of the binary system. To obtain a full dynamical model of the binary, we use an extensive collection of optical photometric and spectroscopic data taken from the literature. By using all of the available observational constraints, we show that the orbit is slightly eccentric (both the radial velocity and photometric data independently confirm this result) and that the companion star rotates roughly 1.4 times its pseudosynchronous value. We find a black hole mass of M = 14.8 ± 1.0 M [subscript ☉], a companion mass of M [subscript opt] = 19.2 ± 1.9 M [subscript ☉], and the angle of inclination of the orbital plane to our line of sight of i = 27.1 ± 0.8 deg.en_US
dc.language.isoen_US
dc.publisherIOP Publishingen_US
dc.relation.isversionofhttp://dx.doi.org/10.1088/0004-637x/742/2/84en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceAmerican Astronomical Societyen_US
dc.titleTHE MASS OF THE BLACK HOLE IN CYGNUS X-1en_US
dc.typeArticleen_US
dc.identifier.citationOrosz, Jerome A., Jeffrey E. McClintock, Jason P. Aufdenberg, Ronald A. Remillard, Mark J. Reid, Ramesh Narayan, and Lijun Gou. “THE MASS OF THE BLACK HOLE IN CYGNUS X-1.” The Astrophysical Journal 742, no. 2 (November 9, 2011): 84. © 2011 The American Astronomical Societyen_US
dc.contributor.departmentMIT Kavli Institute for Astrophysics and Space Researchen_US
dc.contributor.mitauthorRemillard, Ronald Alanen_US
dc.relation.journalThe Astrophysical Journalen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsOrosz, Jerome A.; McClintock, Jeffrey E.; Aufdenberg, Jason P.; Remillard, Ronald A.; Reid, Mark J.; Narayan, Ramesh; Gou, Lijunen_US
mit.licensePUBLISHER_POLICYen_US


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