The bolometric light curves and physical parameters of stripped-envelope supernovae
Date Issued
2016
Author(s)
Prentice, S. J.
•
Mazzali, P. A.
•
•
Gal-Yam, A.
•
Kulkarni, S. R.
•
Rubin, A.
•
Corsi, A.
•
Fremling, C.
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Sollerman, J.
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Yaron, O.
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Arcavi, I.
•
Zheng, W.
•
Kasliwal, M. M.
•
Filippenko, A. V.
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Cenko, S. B.
•
Cao, Y.
•
Nugent, P. E.
Abstract
The optical and optical/near-infrared pseudo-bolometric light curves of 85 stripped-envelope supernovae (SNe) are constructed using a consistent method and a standard cosmology. The light curves are analysed to derive temporal characteristics and peak luminosity Lp, enabling the construction of a luminosity function. Subsequently, the mass of 56Ni synthesized in the explosion, along with the ratio of ejecta mass to ejecta kinetic energy, are found. Analysis shows that host-galaxy extinction is an important factor in accurately determining luminosity values as it is significantly greater than Galactic extinction in most cases. It is found that broad-lined SNe Ic (SNe Ic-BL) and gamma-ray burst SNe are the most luminous subtypes with a combined median Lp, in erg s-1, of log(Lp) = 43.00 compared to 42.51 for SNe Ic, 42.50 for SNe Ib, and 42.36 for SNe IIb. It is also found that SNe Ic-BL synthesize approximately twice the amount of 56Ni compared with SNe Ic, Ib, and IIb, with median MNi = 0.34, 0.16, 0.14, and 0.11 M☉, respectively. SNe Ic-BL, and to a lesser extent SNe Ic, typically rise from Lp/2 to Lp more quickly than SNe Ib/IIb; consequently, their light curves are not as broad.
Volume
458
Issue
3
Start page
2973
Issn Identifier
0035-8711
Ads BibCode
2016MNRAS.458.2973P
Rights
open.access
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