@conference {23853,
	title = {Classical Novae as Supersoft X-ray Sources in the Andromeda Galaxy},
	volume = {281},
	year = {2013},
	month = {2013/01/1},
	pages = {105 - 112},
	abstract = {We review the first results of a dedicated, on-going monitoring project for supersoft X-ray source (SSS) states of classical novae (CNe) in the central region of the Andromeda galaxy (M 31). So far, during three high-cadence observation campaigns with the X-ray telescopes XMM-Newton and Chandra from 2006 until 2009 we detected 21 CNe, only four of which were seen in X-rays before. This increased the total number of known CNe with X-ray counterparts in M 31 to 60, which is significantly larger than for any other galaxy, including the Milky Way. We compiled a catalog of X-ray and optical properties for these 60 sources which allowed us to perform source statistics and population studies of CNe with SSS state in M 31 for the first time. Here we review the results of this analysis: (i) several correlations between X-ray and optical parameters, (ii) an analysis of the intrinsic fraction of CNe with SSS state, and (iii) the first nova population study in X-rays. Our first results are promising, however a continuing monitoring of the unique target M 31 is strongly needed to extend this valuable data base and to refine the early statements and predictions.},
	keywords = {CATACLYSMIC VARIABLES, galaxies: individual (M 31), Novae, X-rays: binaries},
	isbn = {1743-9221},
	url = {https://ui.adsabs.harvard.edu/abs/2013IAUS..281..105H},
	author = {Henze, Martin and Pietsch, Wolfgang and Haberl, Frank and Hernanz, Margarita and Sala, Gloria and Della Valle, Massimo and Hatzidimitriou, Despina and Rau, Arne and Hartmann, Dieter H. and Burwitz, Vadim and Greiner, Jochen}
}
