The subluminous, spectroscopically peculiar type IA supernova 1991bg in the elliptical galaxy NGC 4374

Details The subluminous, spectroscopically peculiar type IA supernova 1991bg in the elliptical galaxy NGC 4374 The subluminous, spectroscopically peculiar type IA supernova 1991bg in the elliptical galaxy NGC 4374

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aj....104.1543f&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 104, no. 4, p. 1543-1556, 1684.

Astronomy and Astrophysics

Astronomy

256

Elliptical Galaxies, Peculiar Stars, Stellar Spectrophotometry, Supernovae, Light Curve, Stellar Luminosity, Virgo Galactic Cluster

Scientific paper

Photometric and spectroscopic observations of SN 1991bg, a very peculiar Type Ia supernova in the outskirts or the E1 galaxy NGC 4374 in the Virgo cluster, are reported. The spectra and light curves demonstrate that SN 1991bg is an intrinsically subluminous, photometrically and spectroscopically discrepant object. In some respects it is similar to the peculiar SNe Ia 1986G in Cen A and 1971I in NGC 5055. It is suggested that the observed properties of these mavericks are associated with a low mass in the ejecta.

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