Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-12-03
Astronomy and Astrophysics
Astrophysics
6 pages, 1 figure, accepted by A&A
Scientific paper
10.1051/0004-6361:20011745
IRS 13E is an infrared, mm and X-ray source in the Galactic Centre. We present the first Chandra X-ray spectrum for IRS 13E and show that it is consistent with a luminous and highly absorbed X-ray binary system. Since the X-ray luminosity is too large for a solitary star, our interpretation is that of an early-type long-period binary with strong colliding winds emission. This naturally explains the observed X-ray spectrum and count rate as well as its lack of significant short term variability. Due to the short lifetime of any nebula 0.2 pc from the putative central super-massive black-hole, we argue that the primary of IRS 13E has exited the LBV phase in the last few thousand years.
Coker Robert Francis
Kastner Joel H.
Pittard Julian Mark
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