Volume 537, January 2012
|Number of page(s)||59|
|Section||Catalogs and data|
|Published online||06 January 2012|
The Wendelstein Calar Alto Pixellensing Project (WeCAPP): the M 31 nova catalogue
1 University Observatory Munich, Scheinerstrasse 1, 81679 München, Germany
2 Max Planck Institute for Extraterrestrial Physics, Giessenbachstrasse, 85748 Garching, Germany
3 GEPI, CNRS UMR 8111, Observatoire de Paris, 92195 Meudon, France
Received: 12 April 2011
Accepted: 22 September 2011
We present light curves from the novae detected in the long-term, M 31-monitoring WeCAPP project. The goal of WeCAPP is to constrain the compact dark matter fraction of the M 31 halo with microlensing observations. As a by product we detected 91 novae benefiting from the high cadence and highly sensitive difference imaging technique required for pixel-lensing. We thus can now present the largest sample of optical/CCD nova lightcurves towards M 31 to date. We also obtained thorough coverage of the light curve before and after the eruption thanks to the long-term monitoring. We apply a nova taxonomy to our nova candidates and found 29 S-class novae, 10 C-class novae, 2 O-class novae, and 1 J-class nova. We investigated a universal decline law on the S-class novae. In addition, we correlated our catalogue with the literature and found 4 potential recurrent novae. Part of our catalogue has been used to search for optical counterparts of the super soft X-ray sources detected in M 31. Optical surveys like WeCAPP, when coordinated with multi-wavelength observation, will continue to shed light on the underlying physical mechanism of novae in the future.
Key words: galaxies: individual: M 31 / novae, cataclysmic variables
© ESO, 2012
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