Refined Orbital Solution and Quiescent Variability in the Black Hole Transient GS 1354-64 (= BW Cir)

Bibcode
2009ApJS..181..238C
DOI
10.1088/0067-0049/181/1/238
Casares, J.; Orosz, J. A.; Zurita, C.; Shahbaz, T.; Corral-Santana, J. M.; McClintock, J. E.; Garcia, M. R.; Martínez-Pais, I. G.; Charles, P. A.; Fender, R. P.; Remillard, R. A.
Bibliographical reference

The Astrophysical Journal Supplement, Volume 181, Issue 1, pp. 238-243 (2009).

Advertised on:
3
2009
Number of authors
11
IAC number of authors
5
Citations
68
Refereed citations
61
Description
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 curves.
Related projects
Black hole in outburst
Black holes, neutron stars, white dwarfs and their local environment
Accreting black-holes and neutron stars in X-ray binaries provide an ideal laboratory for exploring the physics of compact objects, yielding not only confirmation of the existence of stellar mass black holes via dynamical mass measurements, but also the best opportunity for probing high-gravity environments and the physics of accretion; the most
Montserrat
Armas Padilla
In progress
Type
Refereed
Stellar & Interstellar Physics (FEEI)
Accretion

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