Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010atel.2474....1g&link_type=abstract
The Astronomer's Telegram, #2474
Astronomy and Astrophysics
Astronomy
4
Optical, X-Ray, Black Holes, Transients
Scientific paper
We report the likely optical ID of the bright transient recently discovered in M31, CXOM31 J004253.1+411422 (Henze et al, ATEL #2356). With a peak X-ray luminosity of nearly 5e39 erg/sec, this is the brightest X-ray transient yet found in M31. An approximately 4000 second HST exposure on 21 Jan 2010, using the ACS and F435W filter, finds an apparently new object with m(f435w)=23.8. This object is not seen in an earlier serendipitous 4000 second ACS exposure on 13 October 2004 using the F660N filter.
Callanan Paul
Garcia Manuel
Murray Stephen S.
Nooraee N.
Primini Frank
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