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The Galactic Centre Source IRS 13E: a Post-LBV Wolf-Rayet Colliding Wind Binary? | | R. F. Coker
; J. M. Pittard
; J. H. Kastner
; | | Date: |
3 Dec 2001 | | Subject: | astro-ph | | Affiliation: | University of Leeds, Rochester Institute of Technology | | 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. | | Source: | arXiv, astro-ph/0112029 | | Services: | Forum | Review | PDF | Favorites | |
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