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

Prentice, SJ, Mazzali, PA, Pian, E, Gal-Yam, A, Kulkarni, SR, Rubin, A, Corsi, A, Fremling, C, Sollerman, J, Yaron, O, Arcavi, I, Zheng, W, Kasliwal, MM, Filippenko, AV, Cenko, SB, Cao, Y and Nugent, PE (2016) The bolometric light curves and physical parameters of stripped-envelope supernovae. Monthly Notices of the Royal Astronomical Society. ISSN 0035-8711

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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 Lp, enabling the construction of a luminosity function. Subsequently, the mass of 56Ni 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 Lp, in erg s−1, of log(Lp) = 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 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.

Item Type: Article
Additional Information: This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record "The bolometric light curves and physical parameters of stripped-envelope supernovae" is available online at: http://dx.doi.org/10.1093/mnras/stw299
Uncontrolled Keywords: 0201 Astronomical And Space Sciences
Subjects: Q Science > QB Astronomy
Divisions: Astrophysics Research Institute
Publisher: Oxford University Press
Date Deposited: 24 Feb 2016 09:59
Last Modified: 04 Sep 2021 13:23
DOI or ID number: 10.1093/mnras/stw299
URI: https://researchonline.ljmu.ac.uk/id/eprint/2981
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