Other
Scientific paper
Oct 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atel.2274....1h&link_type=abstract
The Astronomer's Telegram, #2274
Other
1
Ultra-Violet, Novae
Scientific paper
We report the detection of five novae in M31 using two observations with the Ultraviolet/Optical Telescope (UVOT) on board the Swift satellite. The observations were obtained on 2009-10-22.61 UT (MJD 55126.61) and on 2009-10-25.77 UT (MJD 55129.77), respectively, and are part of a Swift ToO UVOT monitoring of the extremely bright nova M31N 2009-10b. Below we give UVOT magnitudes and 3-sigma upper limits for M31N 2009-10b and four other novae that are within the UVOT field in the uvw1 (181-321nm, 2058 and 610 s exposure time), uvm2 (166-268nm, 1997 and 269 s), and uvw2 (112-264 nm, 2247 and 716 s) filter observations: Nova uvw1 uvm2 uvw2 MJD M31N2009-02b 18.7±0.1 19.3±0.1 18.9±0.1 55126.61 18.7±0.2 19.3±0.3 19.1±0.2 55129.77 M31N2009-08a 18.5±0.2 18.7±0.2 19.1±0.3 55126.61 M31N2009-08e 18.7±0.1 18.4±0.1 18.4±0.1 55126.61 18.3±0.2 18.1±0.2 18.0±0.1 55129.77 M31N2009-10b 18.1±0.1 18.7±0.1 18.6±0.1 55126.61 18.6±0.2 19.0±0.3 19.0±0.2 55129.77 M31N2009-10c 16.9±0.1 17.1±0.1 17.4±0.1 55126.61 16.9±0.1 17.1±0.2 17.5±0.1 55129.77 Nova M31N 2009-10b does not shine out as an extremely bright object in the UVOT observations and it is fading rapidly, by about 0.4 magnitudes in only three days.
Haberl Franck
Henze Matthias
Orio Marina
Pietsch Wolfgang
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