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New optical nova candidate in M 31

ATEL # 1609; M. Henze, W. Pietsch, V. Burwitz (Max-Planck-Institut fuer extraterrestrische Physik, MPE), D. Hatzidimitriou, P. Reig, N. Primak, G. Papamastorakis (University of Crete), A. Updike, D.H. Hartmann (Clemson University), P. Milne, G. Williams (University of Arizona)
on 8 Jul 2008; 16:15 UT
Password Certification: Wolfgang Pietsch (wnp@mpe.mpg.de)

Subjects: Optical, Nova

We report the discovery of a possible nova in M 31 on four consecutive dithered stacked 100s R filter CCD images, obtained on 2008 July 06.04, with the 1.3m Ritchey Chretien f/7.5 telescope at Skinakas Observatory, Crete, Greece, using an Andor DZ436-BV CCD Camera (with a Marconi 2k x 2k chip with 13.5��m sq. pixels). The R magnitude of the object was 18.7. The object is already visible with a magnitude of 18.3 on a 12*60s stacked R filter CCD image obtained with the robotic 60cm telescope with an E2V CCD (2kx2k) of the Livermore Optical Transient Imaging System (Super-LOTIS, located at Steward Observatory, Kitt Peak, Arizona, USA) on 2008 June 30.45. The position obtained for the nova candidate is RA = 00h42m34.42s, Dec = 41d18'15.7" (J2000, accuracy of 0.3"), which is 1'51" west and 2'06" north of the core of M 31. All magnitudes given are obtained from a photometric solution using R magnitudes of the Local Group Survey M 31 catalogue (Massey et al. 2006, AJ, 131, 2478). No object is visible (limiting R magnitude of ~19.5) at the position of the nova candidate on Super-LOTIS images of 2008 Feb 01.09 and before. There is no entry in VizieR/CDS for this object and no minor planet could be found on this position using the MPC/IAU Minor Planet Checker (see http://scully.harvard.edu/~cgi/CheckMP).

Furthermore, we report additional photometry for the new nova candidate in ATEL #1602 using the Skinakas camera as above. We determined an R magnitude of 18.8 on images taken 2008 July 06.02.


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