Volume 498, Number 2, May I 2009
|Page(s)||L13 - L16|
|Published online||01 April 2009|
Letter to the Editor
Max-Planck-Institut für extraterrestrische Physik, 85748 Garching, Germany e-mail: email@example.com
2 Departament de Física i Enginyeria Nuclear, EUETIB (UPC/IEEC), Comte d'Urgell 187, 08036 Barcelona, Spain
3 European Southern Observatory (ESO), 85748 Garching, Germany
4 INAF - Napoli, Osservatorio Astronomico di Capodimonte, Salita Moiariello 16, 80131 Napoli, Italy
5 International Centre for Relativistic Astrophysics, Piazzale della Repubblica 2, 65122 Pescara, Italy
6 Institut de Ciències de l'Espai (CSIC-IEEC), Campus UAB, Fac. Ciències, 08193 Bellaterra, Spain
7 Department of Physics and Astronomy, Clemson University, Clemson, SC 29634-0978, USA
8 Steward Observatory, 933 North Cherry Avenue, Tucson, AZ 85721, USA
Accepted: 13 March 2009
Context. Short supersoft X-ray source (SSS) states (durations ≤100 days) of classical novae (CNe) indicate massive white dwarfs that are candidate progenitors of supernovae type Ia.
Aims. We carry out a dedicated optical and X-ray monitoring program of CNe in the bulge of M 31.
Methods. We discovered M31N 2007-11a and determined its optical and X-ray light curve. We used the robotic Super-LOTIS telescope to obtain the optical data and XMM-Newton and Chandra observations to discover an X-ray counterpart to that nova.
Results. Nova M31N 2007-11a is a very fast CN, exhibiting a very short SSS state with an appearance time of 6–16 days after outburst and a turn-off time of 45–58 days after outburst.
Conclusions. The optical and X-ray light curves of M31N 2007-11a suggest a binary containing a white dwarf with MWD > 1.0 .
Key words: galaxies: individual: M31 / novae, cataclysmic variables / stars: individual: nova M31N 2007-11a / X-rays: galaxies
© ESO, 2009
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.