The Galactic Centre source IRS 13E: A Post-LBV Wolf-Rayet colliding wind binary?

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Title: The Galactic Centre source IRS 13E: A Post-LBV Wolf-Rayet colliding wind binary?
Author: Coker, Robert; Pittard, Julian; Kastner, Joel
Abstract: 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.
Description: Also archived in: arXiv: astro-ph/0112029 v1 3 Dec 2001
Record URI: http://hdl.handle.net/1850/1858
Date: 2002-02

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