Spectroscopy of $A0620-00$: the mass of the black hole and an image of its accretion disc
TLDR
In this article, spectra of the black hole binary A0620-00 taken at Hα and Hβ were used to study the distribution of emission-line flux from its accretion disc.Abstract:
We present spectra of the black hole binary A0620-00 taken at Hα and Hβ to study the distribution of emission-line flux from its accretion disc. Using the spectra of Hα, we have measured the K-type companion star's radial velocity semi-amplitude and rotational broadening to be K 2 =433±3 km s −1 and v sin i=83±5 km s −1 . Accounting for the Roche-lobe geometry of the companion, the rotational broadening gives the mass ratio q=M 2 /M 1 =0.06 7±0.01. The disc contributes 6±3 per cent of the light at Hα and 17±3 per cent at Hβ, with the K star providing the rest. The masses of the compact object and K star derived from our values of K 2 and q are M 1 =(3.09±0.09)sin −3 i M ○. and M 2 =(0.21±0.04)sin −3 i M ○.read more
Citations
More filters
Journal ArticleDOI
Optical spectroscopy of the quiescent counterpart to EXO 0748-676: a black widow scenario?
E. M. Ratti,D. Steeghs,D. Steeghs,Peter G. Jonker,Peter G. Jonker,Peter G. Jonker,Manuel A. P. Torres,Manuel A. P. Torres,Cees Bassa,Frank Verbunt,Frank Verbunt +10 more
TL;DR: In this article, phase-resolved optical spectroscopy of the counterpart to the neutron star low mass X-ray binary EXO 0748-676, almost one year after it turned into quiescence, was presented.
Journal ArticleDOI
Synthetic Spectra of Cool, Roche Lobe-filling Stars in Close Binary Systems
TL;DR: LinBrod as discussed by the authors is a program that calculates synthetic spectra of cool Roche lobe-filling stars in close binary systems, which can be used to analyze observations of the secondary stars in Algol systems, cataclysmic variables, and low-mass X-ray binaries containing neutron stars.
Journal ArticleDOI
Phase-dependent study of near-infrared disk emission lines in LB-1
Jifeng Liu,Zheng Zheng,Roberto Soria,Jesús Aceituno,Haotong Zhang,Youjun Lu,Song Wang,Wolf-Rainer Hamann,Lida Oskinova,Varsha Ramachandran,Hailong Yuan,Zhong-Rui Bai,Shu Wang,Brendan J. McKee,Jianfeng Wu,Junfeng Wang,Mario G. Lattanzi,Krzysztof Belczynski,Jorge Casares,Jonay I. González Hernández,Rafael Rebolo +20 more
TL;DR: In this paper, the authors used the National Science Foundation of CYhina (NSFC) under grant numbers 11988101/11933004 (J.L., 11690024 (Y. L., 11603035 (S.W.).
Journal ArticleDOI
The Mass of the Black Hole in LMC X-3
Jerome A. Orosz,James F. Steiner,Jeffrey E. McClintock,Michelle Buxton,Charles D. Bailyn,Danny Steeghs,Alec Guberman,Manuel A. P. Torres,Manuel A. P. Torres +8 more
TL;DR: In this article, a self-consistent dynamical model for the LMC X-3 system is presented, where the uncertainty includes an estimate of the systematic error caused by X-ray heating.
Journal ArticleDOI
An evolved donor star in the long-period cataclysmic variable HS 0218+3229
Pablo Rodríguez-Gil,Pablo Rodríguez-Gil,Pablo Rodríguez-Gil,Manuel A. P. Torres,Boris T. Gänsicke,Teo Muñoz-Darias,D. Steeghs,D. Steeghs,R. Schwarz,A. Rau,H. J. Hagen +10 more
TL;DR: In this paper, the authors combine the analysis of time-resolved spectroscopy and photometry of HS 0218+3229 with the aim of measuring the mass of the white dwarf and the donor star and the orbital inclination.
Related Papers (5)
The Radial Velocity Curve and Peculiar TiO Distribution of the Red Secondary Star in Z Chamaeleontis
Richard A. Wade,Keith Horne +1 more