[vsnet-alert 8461] M31 Optical Transient (possible nova)

[Taichi Kato]

M31 Optical Transient (possible nova)

   The information is from ATEL #518.

Title:		M31 Optical Transient
Author:		R. Quimby, P. Hoeflich, J. C. Wheeler, E. L. Robinson (University
		of Texas), and C. Gerardy (Imperial College)
Queries:	quimby at astro.as.utexas.edu
Posted:		16 Jun 2005;  18:44  UT
Subjects:	Optical, Novae, Transients

We report the discovery of a   transient in M31 using unfiltered CCD images
taken on June 15.38 UT   (about 15.8 mag) and June 16.38 (about 16.6 mag)
using the 0.45m   ROTSE-IIIb telescope at the McDonald Observatory. The
object is   located at RA = 00h45m05.28s DEC = +41o33'40.1" and was not
detected   in ROTSE-IIIb data from June 8.41 UT (limiting mag about 17.7).
The   transient is consistent with a fast nova (cf. Figure 2 of della Valle
1991, A&A, 252, L9). A finding chart for the transient can be found 
at:      <a href='http://grad40.as.utexas.edu/~quimby/tss/nova4.png'>http://grad40.as.utexas.edu/~quimby/tss/nova4.png</a>