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Discovery of Another Probable Nova in M83

ATel #4732; K. Hornoch (Astronomical Institute, Ondrejov, Czech Republic)
on 14 Jan 2013; 03:15 UT
Credential Certification: Allen W. Shafter (aws@nova.sdsu.edu)

Subjects: Optical, Nova, Transient

I report the discovery of another probable nova in M83 on a co-added 600-s R-band CCD frame taken on 2013 Jan. 10.374 UT with the Danish 1.54-m telescope at La Silla.

The new object designated PNV J13370342-2953398 is located at R.A. = 13h37m03s.42, Decl. = -29o53'39".8 (equinox 2000.0), which is 32.5" east and 103.1" south of the center of M83 (see link to discovery image below). Its peak brightness (absolute mag MR = -7.4 using distance modulus μ = 28.4 for M83) is consistent with the outburst of classical nova in M83.

The following R-band magnitudes were obtained, including prediscovery detections, using the Danish 1.54-m telescope at La Silla:

2012 Jun. 1.138 UT, [22.8; 2013 Jan. 2.313, [22.7; 8.374, 21.5 +/- 0.2; 9.370, 21.2 +/- 0.2; 10.374, 21.0 +/- 0.15; 11.367, 21.1 +/- 0.3; 12.374, 21.8 +/- 0.25.

Additional R-band magnitudes were obtained for PNV J13364430-2950339 (ATel #4723) with the same instrumentation:

2013 Jan. 11.367, 19.46 +/- 0.10; 12.374, 19.67 +/- 0.07.

Discovery image