Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aan...230....1m&link_type=abstract
AAVSO Alert Notice 230
Astronomy and Astrophysics
Astrophysics
Supernova, Sn 1996Bk, Aavso International Database
Scientific paper
We have been informed by Stefano Pesci, Milan, Italy, the Central Bureau for Astronomical Telegrams (IAU Circular 6491), and Guy Hurst (The Astronomer Electronic Circular 1133) of the visual discovery by Pesci and Piero Mazza, Milan, Italy, of a supernova in NGC 5308 at magnitude 14.5-15.0 on October 12.79 UT; Pesci reports that it is "quite separated from the nucleus." No object was seen at this location by Pesci on August 15. The supernova was confirmed visually by M. Schwartz, Cascade Mountains, OR, by CCD on Oct 13.3 UT. P. Garnavich and R. Kirshner, Harvard-Smithsonian Center for Astrophysics, report that spectra obtained on Oct 15.1 UT by J. Huchra and L. Macri with the 1.5-m Tillinghast telescope confirm the supernova in NGC 5308 as a type-Ia supernova about a week past maximum. They also report that, according to CCD images taken with the Whipple Observatory 1.2-m telescope, the supernova is 10.5" south and 17.9" west of the galaxy center, and at the time of exposure was magnitude V = 15 (IAU Circular 6491). Observations should be reported to the AAVSO International Database as SN 1996BK.
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