Possible models for the type IA supernova 1990N

Abstract

view Abstract Citations (86) References (46) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Possible Models for the Type IA Supernova 1990N Shigeyama, Toshikazu ; Nomoto, Ken'ichi ; Yamaoka, Hitoshi ; Thielemann, Friedrich-Karl Abstract Possible interpretations of new spectral and photometric features of Type Ia supernova 1990N with carbon deflagration/detonation models are presented. To explain the presence of Si and Ca at high expansion velocities in SN 1990N, we suggest four possible models, among which is a carbon detonation in a white dwarf with a mass ~1 M_sun_. The slow rise of the light curve of SN 1990N can be reproduced by both the deflagration and detonation models if the optical opacity is somewhat larger than that previously adopted. Implications for the Hubble constant are discussed. Publication: The Astrophysical Journal Pub Date: February 1992 DOI: 10.1086/186281 Bibcode: 1992ApJ...386L..13S Keywords: Nuclear Reactions; Red Shift; Stellar Models; Stellar Spectrophotometry; Supernovae; White Dwarf Stars; Calcium; Hubble Constant; Light Curve; Silicon; Stellar Mass; Astrophysics; GALAXIES: DISTANCES AND REDSHIFTS; NUCLEAR REACTIONS; NUCLEOSYNTHESIS; ABUNDANCES; STARS: INDIVIDUAL ALPHANUMERIC: SN 1990N; STARS: SUPERNOVAE: INDIVIDUAL ALPHANUMERIC: SN 1990N; STARS: WHITE DWARFS full text sources ADS | data products NED (3) SIMBAD (2)