Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006mnras.366..918c&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 366, Issue 3, pp. 918-922.
Astronomy and Astrophysics
Astronomy
6
Accretion, Accretion Discs, Stars: Individual: Xtej1716-389, X-Rays: Binaries
Scientific paper
We report on the properties of a 99.3-d periodic modulation in the X-ray transient XTEJ1716-389. We associate this source with the transient KSJ1716-389, first detected by the Mir/Kvant module in 1994. The spectral characteristics of XTEJ1716-389, a high intrinsic absorption column, strong emission features and a power-law spectrum, make it very similar to the class of highly absorbed X-ray binaries detected by INTEGRAL. We associate the 99.3-d periodic behaviour with the geometrical obscuration that results from a precessing circumbinary disc that is moving in and out of the field of view, comparable to what has been proposed for SS433. We therefore propose that XTEJ1716-389 is a high-mass X-ray binary with a supergiant companion that is similar not only to SS433, but also to the new class of highly obscured X-ray binaries, suggesting that SS433 is a member of much wider population that is now being detected by INTEGRAL.
Charles Phil A.
Cornelisse Remon
Robertson Colette
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