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BRIGHTENED MIRA-LIKE VARIABLE IN M31

ATel #606; Ovcharov E. (SU, Sofia), Koleva N. (SU, Sofia), Kostov A. (IA, Sofia), Valcheva A. (SU, Sofia), Stanev I. (SU, Sofia), Georgiev Ts. (IA, Sofia), Nedialkov P. (SU, Sofia)
on 15 Sep 2005; 11:02 UT
Credential Certification: Petko Nedialkov (japet@phys.uni-sofia.bg)

Subjects: Optical, Star, Variables

BRIGHTENED MIRA-LIKE VARIABLE IN M31

We report that the POINT-AGAPE Survey Mira variable No. 91772 in M31, has brightened to 1.4 mag above it's previously detected maximum about 20.1 mag in R band. We discovered an unusually bright star located at R.A. = 0h42m44s.49, Decl. = +41o03'43".6 (equinox 2000.0), which is 0".12 west and 0".12 south of the variable. Available R magnitudes from CCD images taken with the 50/70 cm Schmidt telescope at NAO Rozhen , Bulgaria: Sept. 8.951 UT, 18.8; 10.014 UT, 18.7; 11.041 UT, 18.7; 12.023 UT, 18.8; 13.031 UT, 18.7. Nothing visible at this position on images back to June 2004 (limiting mag about 19.5).