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Astron. Astrophys. 361, L13-L16 (2000)

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Letter to the Editor

An X-ray binary model for the Galactic Center source IRS 13E

R.F. Coker and J.M. Pittard

University of Leeds, Department of Physics and Astronomy, Leeds LS2 9JT, UK (robc@ast.leeds.ac.uk; jmp@ast.leeds.ac.uk)

Received 6 July 2000 / Accepted 14 August 2000


We present several models for IRS 13E, an infrared, mm and X-ray source in the Galactic Center. Our favored interpretation is that of an early-type binary with strong colliding winds emission. This naturally explains the observed X-ray count rate and the strong infrared emission lines, and has a distinct advantage over competing hypotheses based upon a single star or black-hole system.

Key words: stars: individual: IRS 13E – stars: Wolf-Rayet – X-rays: stars

Send offprint requests to: R.F. Coker

© European Southern Observatory (ESO) 2000

Online publication: September 5, 2000