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.
@article{arxiv.astro-ph/0102441,
title = {Optical identification of supersoft X-ray sources in M31},
author = {Marina orio and Roberto Casalegno and Chris Conselice and Jochen Greiner and Petko L. Nedialkov and Nikolay A. Tikhonov},
journal= {arXiv preprint arXiv:astro-ph/0102441},
year = {2007}
}