Progenitor structure of SN 1987A

Details Progenitor structure of SN 1987A Progenitor structure of SN 1987A

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...332..247b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 332, Sept. 1, 1988, p. 247-260. Research supported by the Robert A. Welch F

Astronomy and Astrophysics

Astrophysics

22

Stellar Cores, Stellar Envelopes, Stellar Evolution, Stellar Mass, Stellar Structure, Supernova 1987A, Blue Stars, Helium, Hydrogen, Light Curve, Stellar Luminosity, Supergiant Stars, Temperature Gradients

Scientific paper

A careful examination is made of the structure of the progenitor of SN 1987A, presumed to be SK -69°202. Self-consistent models which match the observational constraints of SK -69°202 suggest that if the hydrogen envelope has a solar composition, X ≈ 0.7 - 0.75, the progenitor of SN 1987A must have undergone essentially no mass loss, or have lost nearly all the hydrogen-rich envelope leaving ⪉0.1 M_sun;. With envelopes of small mass, both the core and the envelope are shocked to excessive velocities, and hence such models can be ruled out. The large mass envelopes are difficult to reconcile with growing evidence for composition pecularities and helium enrichment. Helium-rich envelopes can be of moderate mass, without violating conditions of self-consistency. Three different structures are found for models with constant luminosity, total mass, core mass, and core radius as the effective temperature is varied. Two of these solutions can correspond to effective temperatures in the range pertinent to SK -69°202, although one may be unstable.

Affiliated with

Also associated with

No associations

Rating

Progenitor structure of SN 1987A 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 Progenitor structure of SN 1987A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Progenitor structure of SN 1987A will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-909400