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; A. V. Filippenko; S. B. Cenko; Y. Cao; P. E. Nugent

doi:10.1093/mnras/stw299

paper

The bolometric light curves and physical parameters of stripped-envelope supernovae

arXiv:1602.01736 · doi:10.1093/mnras/stw299

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 $L_{p}$ , 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 $L_{p}$ , in erg s $^{- 1}$ , of log( $L_{p}) = 43.00$ 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 synthesise approximately twice the amount of $^{56}$ Ni compared with SNe~Ic, Ib, and IIb, with median $M_{Ni} = 0.34$ , 0.16, 0.14, and 0.11 M $_{⊙}$ , respectively. SNe~Ic-BL, and to a lesser extent SNe~Ic, typically rise from $L_{p} /2$ to $L_{p}$ more quickly than SNe~Ib/IIb; consequently, their light curves are not as broad.

arXiv comment34 pages. Accepted for publication in MNRAS. Updated to reflect the published version. +1 supernova

The bolometric light curves and physical parameters of stripped-envelope supernovae

Abstract

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