REFINED ORBITAL SOLUTION AND QUIESCENT VARIABILITY IN THE BLACK HOLE TRANSIENT GS 1354-64 (= BW Cir)

Journal Article · Sun Mar 15 00:00:00 EDT 2009 · Astrophysical Journal, Supplement Series

DOI:https://doi.org/10.1088/0067-0049/181/1/238; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)· OSTI ID:21269254

Casares, J; Zurita, C; Shahbaz, T; Corral-Santana, J M

In Casares et al. we presented the first radial velocity curve of the companion star to BW Cir which demonstrates the presence of a black hole in this historical X-ray transient. But these data were affected by aliasing and two possible periods at 2.5445 days and 2.5635 days were equally possible. Here we present new spectroscopic data that enable us to break the 1-year aliasing and confirm 2.5445 days as the correct orbital period. We also present R-band photometry over 14 years, which reveals the presence of important flaring activity dominating the light curves00.

• OSTI ID: 21269254
• Journal Information: Astrophysical Journal, Supplement Series, Vol. 181, Issue 1; Other Information: DOI: 10.1088/0067-0049/181/1/238; Country of input: International Atomic Energy Agency (IAEA); ISSN 0067-0049
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
ACCRETION DISKS
BLACK HOLES
DIAGRAMS
FLARING
MATHEMATICAL SOLUTIONS
PHOTOMETRY
RADIAL VELOCITY
STARS
TRANSIENTS
VISIBLE RADIATION