Progress in the spectral studies of supernovae: observation.

Details Progress in the spectral studies of supernovae: observation. Progress in the spectral studies of supernovae: observation.

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996pabei..14...29l&link_type=abstract

Prog. Astron., Vol. 14, No. 1, p. 29 - 39

Astronomy and Astrophysics

Astronomy

Supernovae: Classification, Supernovae: Line Identifications, Supernovae: Hubble Constant

Scientific paper

A classification scheme is described for a sample of supernovae (SNe). Progress in the spectral observations of various types of SNe is reported. The discoveries of two peculiar SN Ia - SN 1991T and SN 1991bg challenged the reliability of the homogeneity of the Type Ia class. Particular attention should be paid to the sample of Type Ib/Ic SNe. The evolution from Type II SNe at maximum light to Type Ib/Ic SNe at later times for SN 1993J and SN 1987K raised questions on the traditional Type I-Type II differentiation. A new subclass of "Type IIn" may be needed for the Type II SNe showing peculiar Hα profiles, with narrow peaks siting on broad emission bases. A Hubble constant of H0 = 80(+17,-15) km s-1Mpc-1 is obtained from observations of the distant Type II SN 1992am.

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