Optical identification of supersoft X-ray sources in M31
Marina orio, Roberto Casalegno, Chris Conselice, Jochen Greiner, Petko L. Nedialkov, Nikolay A. Tikhonov
Abstract
We report on initial progress in a program of optical identification of supersoft X-ray sources in M31, pursued mainly with the WIYN telescope. We propose the identification of one supersoft X-ray source with a variable star, which we believe to have been a classical or recurrent nova in outburst in September 1990. The nova remnant must have been still a supersoft X-ray sources 5 years after this observation, when it was observed with ROSAT.
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