On the relative frequencies of spectroscopically normal and peculiar type IA supernovae

Details On the relative frequencies of spectroscopically normal and peculiar type IA supernovae On the relative frequencies of spectroscopically normal and peculiar type IA supernovae

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aj....106.2383b&link_type=abstract

The Astronomical Journal (ISSN 0004-6256), vol. 106, no. 6, p. 2383-2391

Astronomy and Astrophysics

Astronomy

160

Astronomical Spectroscopy, Classifications, Spectrum Analysis, Supernovae, Correlation, Light Curve, Spectral Bands, Statistical Analysis

Scientific paper

After defining what we mean by spectroscopically 'normal' and 'peculiar' Type Ia supernova, we report the results of an attempt to sub-classify 84 SNe Ia either as normal or as like one of the recent, peculiar SNe Ia: 1991T, 1991bg, or 1986G. Only SNe 1957A and 1960H are found to have been certifiably abnormal, with SN 1957A; appearing to have been like SN 1991bg, and SN 1960H having been like SN 1991bg or SN 1988G; SNe 1971I and 1980I are under suspicion of having been like SN 1986G, and SN 1988G of having been like SN 1991T. Of the SNe Ia we have been able to classify either as normal or as peculiar, 89% (or 83%, counting those under suspicion as peculiar) are normal. Our main conclusion is that the observational sample of SNe Ia is strongly peaked at 'spectroscopically normal.' We further conclude that when arranged in the photometric sequence of Phillips (1993) SNe Ia also form a spectroscopic sequence, and that peculiar SNe Ia are over-represented in the Phillips sample.

Affiliated with

Also associated with

No associations

Rating

On the relative frequencies of spectroscopically normal and peculiar type IA supernovae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with On the relative frequencies of spectroscopically normal and peculiar type IA supernovae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the relative frequencies of spectroscopically normal and peculiar type IA supernovae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-783471