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The bolometric light curves and physical parameters of stripped-envelope supernovae | S. J. Prentice
; P. A. Mazzali
; E. Pian
; A. Gal-Yam
; S. R. Kulkarni
; A. Rubin
; A. Corsi
; C. Fremling
; J. Sollerman
; O. Yaron
; I. Arcavi
; W. Zheng
; M. M. Kasliwal
; V. V. Filippenko
; S. B. Cenko
; Y. Cao
; P. Nugent
; | Date: |
4 Feb 2016 | Abstract: | The optical and optical/near-infrared pseudobolometric light curves of 84
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 $L_{mathrm{p}}$, enabling the construction
of a luminosity function. Subsequently, the mass of $^{56}$Ni synthesised 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 $L_{mathrm{p}}$, in erg s$^{-1}$, of log($L_{mathrm{p}})=42.99$
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 synthesise approximately twice the amount of
$^{56}$Ni compared with SNe Ic, Ib, and IIb, with median $M_{mathrm{Ni}} =
0.34$, 0.16, 0.14, and 0.11 M$_{odot}$, respectively. SNe Ic-BL, and to a
lesser extent SNe Ic, typically rise from $L_{mathrm{p}}/2$ to
$L_{mathrm{p}}$ more quickly than SNe Ib/IIb; consequently, their light curves
are not as broad. | Source: | arXiv, 1602.1736 | Services: | Forum | Review | PDF | Favorites |
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