Photographic observations of supernova 1979c in NGC 4321

Details Photographic observations of supernova 1979c in NGC 4321 Photographic observations of supernova 1979c in NGC 4321

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982cha%26a...6..172h&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 6, Issue 2, p. 172-176.

Astronomy and Astrophysics

Astrophysics

Scientific paper

We briefly report on our observations of SN 1979c in NGC 4321 in the period 1979 April 23 - December 27.
The light curve of SN 1979c shows a hump in the period May 8 - June 5. It thus differs from a Type-I curve, but it does not completely agree with a typical Type-II curve either. Using our own and others' data, we find that, at maximum, it had an absolute photographic magnitude of -19m.78 and a colour temperature of ~9000 K. We estimate the total energy release to be 1.6 × 1050 erg. We also note its location on a spiral arm of the parent galaxy, not far from an H-II region. From these observations, we conclude that SN 1979c is a Type-II supernova with, however, some atypical features.

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