It's Alive! The Supernova Impostor 1961V

Details It's Alive! The Supernova Impostor 1961V It's Alive! The Supernova Impostor 1961V

2011-12-01

arxiv.org/abs/1112.0299v2

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

15 pages, 6 figures; corrected use of tau in DUSTY and updated Fig 4 (thanks, CS Kochanek). Conclusions unchanged. In ApJ

Scientific paper

Reports of the death of the precursor of Supernova (SN) 1961V in NGC 1058 are exaggerated. Consideration of the best astrometric data shows that the star, known as "Object 7," lies at the greatest proximity to SN 1961V and is the likely survivor of the "SN impostor" super-outburst. SN 1961V does not coincide with a neighboring radio source and is therefore not a radio SN. Additionally, the current properties of Object 7, based on data obtained with the Hubble Space Telescope, are consistent with it being a quiescent Luminous Blue Variable (LBV). Furthermore, post-explosion non-detections by the Spitzer Space Telescope do not necessarily and sufficiently rule out a surviving LBV. We therefore consider, based on the available evidence, that it is yet a bit premature to reclassify SN 1961V as a bona fide SN. The inevitable demise of this star, though, may not be too far off.

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