Spectra of two very old supernovae - SN 1986J and SN 1980K

Journal Article · Wed May 01 04:00:00 EDT 1991 · Astrophysical Journal; (United States)

DOI:https://doi.org/10.1086/169998· OSTI ID:5588925

Leibundgut, B; Kirshner, R P; Pinto, P A; Rupen, M P; Smith, R C ^[1]

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1. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (USA)

Spectra are presented for SN 1986J in NGC 891, observed 4 and 7 years after the explosion, and SN 1980K, observed 9 years after maximum light. A narrow-line and a broad-line component are noted in SN 1986J; these are respectively attributed to a circumstellar shell and the actual stellar interior (without hydrogen). SN 1980K continues to emit in very broad lines. Comparison with earlier observations suggests that this SN halted its exponential flux decline in the early 1980s, and is currently emitting at a constant rate. In both SNs studies, the identity of the energy source which sustains emission remains uncertain. 89 refs.

• OSTI ID: 5588925
• Journal Information: Astrophysical Journal; (United States), Journal Name: Astrophysical Journal; (United States) Vol. 372; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPARATIVE EVALUATIONS
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
ERUPTIVE VARIABLE STARS
EXPLOSIONS
LINE WIDTHS
NEBULAE
RADIATIONS
RADIOWAVE RADIATION
SPECTRA
STAR EVOLUTION
STARS
SUPERNOVA REMNANTS
SUPERNOVAE
VARIABLE STARS