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dc.contributor.authorMiller-Jones, James
dc.contributor.authorJonker, P.
dc.contributor.authorDhawan, V.
dc.contributor.authorBrisken, W.
dc.contributor.authorRupen, M.
dc.contributor.authorNelemans, G.
dc.contributor.authorGallo, E.
dc.date.accessioned2017-01-30T12:49:51Z
dc.date.available2017-01-30T12:49:51Z
dc.date.created2014-10-08T03:10:55Z
dc.date.issued2009
dc.identifier.citationMiller-Jones, J. and Jonker, P. and Dhawan, V. and Brisken, W. and Rupen, M. and Nelemans, G. and Gallo, E. 2009. The First Accurate Parallax Distance to a Black Hole. The Astrophysical Journal. 706 (2): pp. L230-L234.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/25727
dc.description.abstract

Using astrometric VLBI observations, we have determined the parallax of the black hole X-ray binary V404 Cyg to be 0.418 ± 0.024 mas, corresponding to a distance of 2.39 ± 0.14 kpc, significantly lower than the previously accepted value. This model-independent estimate is the most accurate distance to a Galactic stellar-mass black hole measured to date. With this new distance, we confirm that the source was not super-Eddington during its 1989 outburst. The fitted distance and proper motion imply that the black hole in this system likely formed in a supernova, with the peculiar velocity being consistent with a recoil (Blaauw) kick. The size of the quiescent jets inferred to exist in this system is <1.4 AU at 22 GHz. Astrometric observations of a larger sample of such systems would provide useful insights into the formation and properties of accreting stellar-mass black holes.

dc.publisherInstitute of Physics Publishing, Inc.
dc.relation.urihttp://iopscience.iop.org/1538-4357/706/2/L230/
dc.subjectstars: kinematics
dc.subjectstars: distances
dc.subjectastrometry
dc.subjectstars: individual: V404 Cyg
dc.subjectradio continuum: stars
dc.subjectX-rays: binaries
dc.titleThe First Accurate Parallax Distance to a Black Hole
dc.typeJournal Article
dcterms.source.volume706
dcterms.source.number2
dcterms.source.startPageL230
dcterms.source.endPageL234
dcterms.source.issn0004637X
dcterms.source.titleThe Astrophysical Journal
curtin.accessStatusFulltext not available


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