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supernovae - a new selection effectA sample of 228 supernovae that occurred in galaxies with known redshifts is used to show that the mean projected linear supernova distance from the center of the parent galaxy increases with increasing redshift. This effect is interpreted as an observational bias: the discovery rate of supernovae is reduced in the inner parts of distant, poorly resolved galaxies. Even under the optimistic assumption that no selection effects work in galaxies closer than 33 Mpc, about 50% of all supernovae are lost in the inner regions of galaxies beyond 150 Mpc. This observational bias must be taken into account in the derivation of statistical properties of supernovae.
Document ID
19790060171
Document Type
Reprint (Version printed in journal)
Authors
Shaw, R. L.
(Southern California University Los Angeles, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
July 1, 1979
Publication Information
Publication: Astronomy and Astrophysics
Volume: 76
Issue: 2, Ju
Subject Category
ASTROPHYSICS
Funding Number(s)
PROJECT: PROJECT VIKING
Distribution Limits
Public
Copyright
Other