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Full-Text Articles in Physical Sciences and Mathematics
Absolute Magnitude Distribution And Light Curves Of Gamma-Ray Burst Supernovae., D. Richardson
Absolute Magnitude Distribution And Light Curves Of Gamma-Ray Burst Supernovae., D. Richardson
Faculty and Staff Publications
Photometry data were collected from the literature and analyzed for supernovae (SNe) that are thought to have a gamma-ray burst (GRB) association. There are several GRBs afterglow light curves that appear to have an SN component. For these light curves, the SN component was extracted and analyzed. An SN light-curve model was used to help determine the peak absolute magnitudes as well as estimates for the kinetic energy, ejected mass, and nickel mass in the explosion. The peak absolute magnitudes are, on average, brighter than those of similar SNe (stripped-envelope SNe) that do not have a GRB association, but this …
Absolute Magnitude Distributions And Light Curves Of Stripped-Envelope Supernovae, D. Richardson, D. Branch, E. Baron
Absolute Magnitude Distributions And Light Curves Of Stripped-Envelope Supernovae, D. Richardson, D. Branch, E. Baron
Faculty and Staff Publications
The absolute visual magnitudes of three Type IIb, 11 Type Ib, and 13 Type le supernovae (collectively known as stripped-envelope supernovae) are studied by collecting data on the apparent magnitude, distance, and interstellar extinction of each event. Weighted and unweighted mean absolute magnitudes of the combined sample, as well as various subsets of the sample, are reported. The limited sample size and the considerable uncertainties, especially those associated with extinction in the host galaxies, prevent firm conclusions regarding differences between the absolute magnitudes of supernovae of Types Ib and Ic, and regarding the existence of separate groups of over-luminous and …
A Comparative Study Of The Absolute Magnitude Distributions Of Supernovae., D. Richardson, D. Branch, D. Casebeer, J. Millard, R. C. Thomas, E. Baron
A Comparative Study Of The Absolute Magnitude Distributions Of Supernovae., D. Richardson, D. Branch, D. Casebeer, J. Millard, R. C. Thomas, E. Baron
Faculty and Staff Publications
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 (MB> -15) appears to be higher (perhaps much higher) than 1/5 but it remains very uncertain. The fraction that are overluminous (MB > -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 …