Discovery of a Probable Nova in M31
ATel #4653; K. Hornoch and A. Galad (Astronomical Institute, Ondrejov, Czech Republic)
on 16 Dec 2012; 17:50 UT
Credential Certification: Allen W. Shafter (aws@nova.sdsu.edu)
Subjects: Optical, Nova, Transient
Referred to by ATel #: 4658
We report the discovery of a probable nova in M31 on a co-added 360-s R-band CCD frame taken on Dec. 16.023 UT with the Danish 1.54-m telescope at La Silla.
The new object designated PNV J00424912+4117027 is located at R.A. = 0h42m49s.12, Decl. = +41o17'02".7 (equinox 2000.0), which is 54.1" east and 54.2" north of the center of M31 (see link to discovery image below).
The following R-band magnitudes were obtained (including two prediscovery detections) using the Danish 1.54-m telescope at La Silla, the 1.23-m telescope at Calar Alto and the 0.65-m telescope at Ondrejov:
2012 Oct. 29.087 UT, [21.1 (1.23-m telescope); Nov. 27.023, [20.7 (1.54-m telescope); Dec. 7.686, [19.7 (0.65-m telescope); 10.030, 19.5 +/- 0.2 (1.54-m telescope); 13.685, 19.0 +/- 0.25 (0.65-m telescope); 16.023, 18.5 +/- 0.1 (1.54-m telescope).
We thank J. Gorosabel and P. Kubanek, and M. Zejda for getting M31 images at Calar Alto and partly at La Silla, respectively.
Discovery image
