THE FIRST ACCURATE PARALLAX DISTANCE TO A BLACK HOLE

被引：157

作者：

Miller-Jones, J. C. A. ^{[1
]}

Jonker, P. G. ^{[2
,6
]}

Dhawan, V. ^{[3
]}

Brisken, W. ^{[3
]}

Rupen, M. P. ^{[3
]}

Nelemans, G. ^{[4
]}

Gallo, E. ^{[5
]}

机构：

[1] NRAO Headquarters, Charlottesville, VA 22903 USA

[2] SRON, Netherlands Inst Space Res, NL-3584 CA Utrecht, Netherlands

[3] NRAO Domenici Sci Operat Ctr, Socorro, NM 87801 USA

[4] Radboud Univ Nijmegen, IMAPP, Dept Astrophys, NL-6525 ED Nijmegen, Netherlands

[5] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA

[6] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2009年 / 706卷 / 02期

关键词：

astrometry; radio continuum: stars; stars: distances; stars: individual (V404 Cyg); stars: kinematics; X-rays: binaries; COMPACT OBJECT FORMATION; V404; CYG; PROPER MOTIONS; EVENT HORIZONS; STAR; MASS; QUIESCENCE; BINARIES; CONTAMINATION; GRS-1915+105;

D O I：

10.1088/0004-637X/706/2/L230

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：L230 / L234

页数：5

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