Late-time spectroscopy of two supernovas - The type II 1980K and the type V 1986J

Journal Article · Mon Apr 01 04:00:00 EST 1991 · Astronomical Journal; (USA)

DOI:https://doi.org/10.1086/115762· OSTI ID:5544502

Uomoto, A ^[1]

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1. Johns Hopkins Univ., Baltimore, MD (USA)

Late-time spectra of the type II SN 1980K and the type V SN 1986J are presented. The SN 1980K spectrum is similar to one obtained nearly a year earlier by Fesen and Becker (1990) except that the Fe II multiplet 42 lines have changed relative strengths. Supernova 1986J shows a spectrum qualitatively similar to, but much fainter than, that observed earlier by Rupen et al. (1987). Its H-alpha flux declines exponentially, but not at the rate of any radioactive element expected to be formed in a supernova. Both of these objects are much brighter than expected if radioactive decay of Co-56 provided the energy source for their late-time luminosity. The optical and radio data available for SN 1986J indicates that it was probably not a true supernova but instead the outburst of a luminous blue variable similar to Eta Car. 30 refs.

• OSTI ID: 5544502
• Journal Information: Astronomical Journal; (USA), Journal Name: Astronomical Journal; (USA) Vol. 101; ISSN 0004-6256; ISSN ANJOA
• 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
BALMER LINES
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
COBALT 56
COBALT ISOTOPES
DAYS LIVING RADIOISOTOPES
DECAY
ELECTROMAGNETIC RADIATION
ELECTRON CAPTURE RADIOISOTOPES
ENERGY SOURCES
ERUPTIVE VARIABLE STARS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LUMINOSITY
NUCLEI
ODD-ODD NUCLEI
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
RADIOISOTOPES
RADIOWAVE RADIATION
SPECTRA
SPECTROPHOTOMETRY
STARS
SUPERNOVAE
VARIABLE STARS
VISIBLE RADIATION