The spectrum of the intergalactic supernova 1980I

Details The spectrum of the intergalactic supernova 1980I The spectrum of the intergalactic supernova 1980I

Jul 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981aj.....86..998s&link_type=abstract

Astronomical Journal, vol. 86, July 1981, p. 998-1002.

Astronomy and Astrophysics

Astronomy

21

Intergalactic Media, Stellar Evolution, Stellar Spectra, Supernovae, Absorption Spectra, Protostars, Stellar Mass, Stellar Spectrophotometry

Scientific paper

The supernova 1980I cannot be clearly associated with a single galaxy. Its apparent position is several arcminutes from the centers of three bright galaxies: NGC 4374, NGC 4387, and NGC 4406. Blue and red spectra, obtained shortly after discovery, show 1980I to be a supernova of Type I, but one possessing an unusual absorption feature near 6680 A. The outlying location of 1980I suggests that at least some Type I supernovae have low-mass progenitors, or that star formation is occurring at large (about 50 kpc) distances from the centers of the neighboring galaxies.

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