| Issue |
A&A
Volume 415, Number 2, February IV 2004
|
|
|---|---|---|
| Page(s) | 471 - 476 | |
| Section | Extragalactic astronomy | |
| DOI | https://doi.org/10.1051/0004-6361:20034615 | |
| Published online | 11 February 2004 | |
Photometric study of two novae in M 31
1
State Observatory, Manora peak, Nainital 263129, Uttaranchal, India
2
Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, India
3
Laboratoire de Physique Corpusculaire, Collège de France, Laboratoire associé au CNRS-IN2P3 (URA 6411), 11 place Marcelin Berthelot, 75231 Paris Cedex 05, France
Corresponding author: Y. C. Joshi, yogesh@upso.ernet.in
Received:
26
May
2003
Accepted:
15
October
2003
We report 
light curves of 2 novae in the M 31 galaxy which were
detected in the four year Nainital Microlensing Survey. One of these novae
has been tracked from the initial
increase in flux while other has been observed during its descending phase
of brightness. The photometry of the first nova during the outburst phase
suggests its peak Rc magnitude to be about 17.2 mag with a flux decline
rate of 0.11 mag day-1 which indicates that it was a fast nova. A month
after its outburst, it shows reddening followed by a plateau in Ic flux. The second nova exhibits a bump in Rc and Ic, possibly
about three weeks after the outburst.
Key words: galaxies: individual: M 31 / stars: novae, cataclysmic variables
© ESO, 2004
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