The spectrum of the intergalactic supernova 1980 i.
Abstract
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.
- Publication:
-
The Astronomical Journal
- Pub Date:
- July 1981
- DOI:
- 10.1086/112975
- Bibcode:
- 1981AJ.....86..998S
- Keywords:
-
- Intergalactic Media;
- Stellar Evolution;
- Stellar Spectra;
- Supernovae;
- Absorption Spectra;
- Protostars;
- Stellar Mass;
- Stellar Spectrophotometry;
- Astronomy