SN 1994I: Disentangling He i Lines in Type IC Supernovae

Details SN 1994I: Disentangling He i Lines in Type IC Supernovae SN 1994I: Disentangling He i Lines in Type IC Supernovae

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...462..462c&link_type=abstract

Astrophysical Journal v.462, p.462

Astronomy and Astrophysics

Astronomy

42

Stars: Abundances, Stars: Supernovae: General, Stars: Supernovae: Individual Alphanumeric: Sn 1994I

Scientific paper

We present spectroscopic observations of the Type Ic supernova SN 1994I and analyze the evidence for helium in the optical portion of the spectrum. The development of high-velocity He I λ5876 starting approximately 1 week after maximum light provides a pattern of evolution that can be used to discriminate He I lines in other Type Ic supernovae. We show that, contrary to earlier interpretation, SN 1987M displayed He I lines. The He abundance is, however, probably consistent with previously derived upper limits. We also identify He in SN 1988L. We conclude that most, and probably all, Type Ic supernovae show evidence for He I lines in the optical region of the spectra, which implies small amounts of high-velocity helium in the outer portions of the ejecta. The implications of this result for the progenitor stars are discussed.

Affiliated with

Also associated with

No associations

Rating

SN 1994I: Disentangling He i Lines in Type IC 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 SN 1994I: Disentangling He i Lines in Type IC Supernovae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and SN 1994I: Disentangling He i Lines in Type IC Supernovae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1356707