[IAUC] CBET 1611: 20081208 : CATACLYSMIC VARIABLE IN ANDROMEDA

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                                                  Electronic Telegram No. 1611
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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CATACLYSMIC VARIABLE IN ANDROMEDA
     M. M. Kasliwal, R. Quimby, and S. R. Kulkarni, California Institute of
Technology, report that spectroscopy (range 360-900 nm) of M31N 2008-11b
(cf. CBET 1588) obtained on Dec. 4.22 UT with the Double Beam Spectrograph
on the Palomar Hale 5-m telescope reveals a steep blue continuum, very
narrow emission in H-alpha, and broad absorption in H-beta through at least
H-eta.  Further, there is a faint blue counterpart in Sloan Digital Sky
Survey "DR Supplement" g-band imaging, with magnitudes g = 22.8 and r > 23.3
(nothing visible in r, to 3 sigma) on 2002 Oct. 6.  Given the reported peak
magnitude of 14.5 (CBET 1588), this outburst had an amplitude of > 8 mag.
Kasliwal et al. suggest that this optical transient is an SU-UMa-like
superoutburst in our own galaxy, similar to HS 2219+1824 (Rodriguez-Gil et
al. 2005, A.Ap. 440, 701).


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                         (C) Copyright 2008 CBAT
2008 December 8                  (CBET 1611)              Daniel W. E. Green