Details

Autor(en) / Beteiligte

• Prentice, S. J
• Mazzali, P. A
• Pian, E
• Gal-Yam, A
• Kulkarni, S. R
• Rubin, A
• Corsi, A
• Fremling, C
• Sollerman, J
• Yaron, O
• Arcavi, I
• Zheng, W
• Kasliwal, M. M
• Filippenko, A. V
• Cenko, S. B
• Cao, Y
• Nugent, P. E

Titel

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

Ist Teil von

• Monthly notices of the Royal Astronomical Society, 2016-05, Vol.458 (3), p.2973-3002

Ort / Verlag

London: Oxford University Press

Erscheinungsjahr

2016

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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 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 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 synthesize approximately twice the amount of 56Ni 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.