Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988lastr.102..225a&link_type=abstract
L'Astronomie (ISSN 0004-6302), vol. 102, June 1988, p. 225-228. In French.
Astronomy and Astrophysics
Astronomy
Supernova 1987A, Temporal Distribution, Ultraviolet Spectra, Visible Spectrum, Stellar Cores, Stellar Envelopes, Stellar Mass Ejection, Stellar Structure
Scientific paper
The physical phenomena leading to the appearance of type II supernovae are reviewed, and the time evolution of spectra of SN 1987 A obtained at wavelengths between 130 nm and 3.5 microns is discussed. Type II supernova are characterized as possessing: (1) a core of about 1.6 solar masses; (2) surrounding layers of expanding stellar matter; and (3) further out, a zone of dust and gas accumulated by the wind of the progenitor star. In SN 1987 A, the transition between the initial stage (a rapid adiabatic expansion of the star surface leading to a cooling phase) and the second stage (a domination of the photospheric layers by the progressive recombination of hydrogen in the envelope) was found to occur at the predicted time. Differences noted between SN 1987 A and the classical model are interpreted as the progenitor having lost a large quantity of matter under the effect of an intense stellar wind.
No associations
LandOfFree
Evolution of ultraviolet and optical spectra of SN 1987 A 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 Evolution of ultraviolet and optical spectra of SN 1987 A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evolution of ultraviolet and optical spectra of SN 1987 A will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1182168