Confirmation and Photometry of Five Optical Nova Candidates in M81

Astronomy and Astrophysics – Astronomy

Scientific paper

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Optical, Nova, Transient

Scientific paper

We report confirmation of five nova candidates in M81 discovered on 2012 Jan. 9.102 UT (ATEL #3871). On Jan. 21.196 UT we obtained four 400-s narrow-band H-alpha CCD frames with the 2.5-m Isaac Newton Telescope + WFC at La Palma under ~1.5" seeing. The single frames were co-added and the co-added image was used for confirmation of the nova candidates and the photometry.
The candidates (except PNV J09553792+6902498, which is visible at the limit) are well visible on the co-added image as well as nova PNV J09553266+6906072 (ATEL #3735, #3770, and #3871) and PNV J09553281+6902028 (ATEL #3867).

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