Peculiar Type I supernovas

Details Peculiar Type I supernovas Peculiar Type I supernovas

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...149l...7u&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 149, no. 1, Aug. 1985, p. L7-L9.

Astronomy and Astrophysics

Astrophysics

72

Light Curve, Stellar Luminosity, Stellar Spectra, Supernovae, Absorption Spectra, Cosmology, Spiral Galaxies

Scientific paper

The Type I supernova 1983n in NGC 5236 (M 83) was unusual because the 6115 A absorption feature normally associated with the Type I maximum-light spectrum was missing and the absolute luminosity was down by 1.4 mag compared with the normal Type I, even though the shape of the optical light curve seemed normal (Panagia et al. 1985). Two other supernovas without the 6115 A feature were also underluminous, occurred in spiral galaxies, and had normal optical light curves. In this Letter it is suggested that SN 1983n and the two other 'peculiar' Type I supernovas are a kind of explosion distinct from the normal Type I and II events. Since these objects seem lower in luminosity than the normal Type I, previous work using the absolute magnitudes of Type I supernovas to determine the distance scale of the universe must be reconsidered. The Type Ip supernova can easily be mistaken for a normal Type I event and contaminates the sample of supernovas used to calibrate the extragalactic distance scale.

Affiliated with

Also associated with

No associations

Rating

Peculiar Type I supernovas 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 Peculiar Type I supernovas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Peculiar Type I supernovas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-752758