author={Andrew G. Cantrell and Charles D. Bailyn and Jerome A. Orosz and Jeffrey E. McClintock and Ronald A. Remillard and Cynthia S. Froning and Joey Neilsen and Dawn M. Gelino and Lijun Gou},
  journal={The Astrophysical Journal},
We analyze photometry of the soft X-ray transient A0620−00 spanning nearly 30 years, including previously published and previously unpublished data. Previous attempts to determine the inclination of A0620 using subsets of these data have yielded a wide range of measured values of i. Differences in the measured value of i have been due to changes in the shape of the light curve and uncertainty regarding the contamination from the disk. We give a new technique for estimating the disk fraction and… Expand

Figures and Tables from this paper

The Spin of the Black Hole in the Soft X-ray Transient A0620--00
During its year-long outburst in 1975-76, the transient source A0620-00 reached an intensity of 50 Crab, an all-time record for any X-ray binary. The source has been quiescent since then. We haveExpand
The Mass of the Black Hole in the X-ray Binary Nova Muscae 1991
The optical counterpart of the black-hole soft X-ray transi e t Nova Muscae 1991 has brightened by ∆V ≈ 0.8 mag since its return to quiescence 23 years ago. We present th e first clear evidence thatExpand
A Dynamical Study of the Black Hole X-ray Binary Nova Muscae 1991
We present a dynamical study of the Galactic black hole binary system Nova Muscae 1991 (GS/GRS 1124-683). We utilize 72 high resolution Magellan Echellette (MagE) spectra and 72 strictly simultaneousExpand
Mass Measurements of Black Holes in X-Ray Transients: Is There a Mass Gap?
We explore possible systematic errors in the mass measurements of stellar mass black holes (BHs). We find that significant errors can arise from the assumption of zero or constant emission from theExpand
The Mass of the Black Hole in XTE?J1118+480
We present contemporaneous, broadband, near-infrared spectroscopy (0.9-2.45 μm) and H-band photometry of the black hole X-ray binary, XTE J1118+480. We determined the fractional dilution of the NIRExpand
A FWHM-K2 correlation in Black-Hole transients
We compare Halpha emission profiles of 12 dynamically confirmed black holes (BHs) and 2 neutron star X-ray transients (SXTs) in quiescence with those of a sample of 43 Cataclysmic Variables (CVs),Expand
Evidence for a black-hole in the X-ray transient XTE J1859+226
We present the results of time-resolved optical photometry and spectroscopy of the X-ray transient XTE J1859+226 (V406 Vul). Photometric observations taken during 2000 and 2008 reveals the presenceExpand
The spotty donor star in the X-ray transient Cen X-4
We accurately determine the fundamental system parameters of the neutron-star X-ray transient Cen X-4 solely using phase-resolved high-resolution UVES spectroscopy. We first determine theExpand
Doppler tomography of the black hole binary A0620-00 and the origin of chromospheric emission in quiescent X-ray binaries
Context. Doppler tomography of emission line profiles in low-mass X-ray binaries allows us to disentangle the different emission sites and study the structure and variability of accretion disks.Expand
Hydrodynamics associated to the X-ray light curve of A0620-00
From 1975 to 1976, an outburst was detected in the light curve of the X-ray transient A0620-00 using the Ariel V and SAS-3 experiments. In this article we model the outburst with the hydrodynamicalExpand


The eccentric accretion disc of the black hole A0620-00
We present spectroscopic observations of the quiescent black hole binary A0620-00 with the 6.5-m Magellan Clay telescope at Las Campanas Observatory. We measure absorption-line radial velocities ofExpand
Further spectrophotometry of the transient X-ray source A0620-00
Observations of the transient X-ray source A0620-00 in November 1976 show that the optical object had an apparent visual magnitude of 18.35. The spectrum is cool and shows that one component of theExpand
A Multiwavelength, Multiepoch Study of the Soft X-Ray Transient Prototype, V616 Monocerotis (A0620−00)*
We have obtained optical and infrared photometry of the soft X-ray transient prototype V616 Mon (A0620-00). From this photometry, we find a spectral type of K4 for the secondary star in the system,Expand
Spectroscopy of $A0620-00$: the mass of the black hole and an image of its accretion disc
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-typeExpand
The Nature of the Secondary Star in the Black Hole X-Ray Transient V616 Mon (=A0620-00)
We have used NIRSPEC on Keck II to obtain K-band spectroscopy of the low-mass X-ray binary V616 Mon (=A0620-00). V616 Mon is the prototypical soft X-ray transient containing a black hole primary. AsExpand
Near-Infrared Light Curves of the Black Hole Binary A0620−00
We measured the near-infrared orbital light curve of the black hole binary A0620-00 in 1995 and 1996. The light curves show an asymmetric, double-humped modulation with extra emission in the peak atExpand
Regularities in the Long Term Optical Light Curve of the Black Hole Candidate Binary A0620-00 (V616 Mon)
ABSTRACT We have monitored the R and I magnitude of the black hole candidate system A0620-00 (V616 Mon) in the years 1991-1995 at the Wise Observatory. Combining our datawith some additionalExpand
On the mass of the compact object in the black hole binary A0620-00
Multicolor orbital light curves of the black hole candidate binary A0620-00 are presented. The light curves exhibit ellipsoidal variations and a grazing eclipse of the mass donor companion star byExpand
Discovery of powerful transient X-ray source A0620—00 with Ariel V Sky Survey Experiment
ON August 3 a faint new X-ray source was discovered (at 15 Ariel counts s−1) near the boundary of the Monoceros and Orion constellations and 6° from the galactic plane, during routine monitoring ofExpand
Chemical abundances in the secondary star in the black hole binary A0620-00
Using a high-resolution spectrum of the secondary star in the black hole binary A0620-00, we have derived the stellar parameters and veiling caused by the accretion disk in a consistent way. We haveExpand