NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-19 T12:21:25 PDT
Help | Comment | NED Home

For refcode 2002AJ....123..745R:
Retrieve 67 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
2002AJ....123..745R A COMPARATIVE STUDY OF THE ABSOLUTE MAGNITUDE DISTRIBUTIONS OF SUPERNOVAE DEAN RICHARDSON, DAVID BRANCH, DARRIN CASEBEER, JENNIFER MILLARD, R. C. THOMAS, AND E. BARON Department of Physics and Astronomy, University of Oklahoma, 440 West Brooks Street, Norman, OK 73019-0225; richards@nhn.ou.edu Received 2001 September 24; accepted 2001 October 24 ABSTRACT The Asiago Supernova Catalog is used to carry out a comparative study of supernova absolute magnitude distributions. An overview of the absolute magnitudes of the supernovae in the current observational sample is presented, and the evidence for subluminous and overluminous events is examined. The fraction of supernovae that are subluminous (M_B_ > -15) appears to be higher (perhaps much higher) than 1/5 but it remains very uncertain. The fraction that are overluminous (M_B_ > -20) is lower (probably much lower) than 0.01. The absolute magnitude distributions for each supernova type, restricted to events within 1 Gpc, are compared. Although these distributions are affected by observational bias in favor of the more luminous events, they are useful for comparative studies. We find mean absolute blue magnitudes (for H_0_ = 60) of -19.46 for normal Type Ia supernovae (SNe Ia), -18.04 for SNe Ibc, -17.61 and -20.26 for normal and bright SNe Ibc considered separately, -18.03 for SNe II-L, -17.56 and -19.27 for normal and bright SNe II-L considered separately, -17.00 for SNe II-P, and -19.15 for SNe IIn. Key words: catalogs - supernovae: general
Retrieve 67 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home