SIMBAD references

2014MNRAS.445.1932S - Mon. Not. R. Astron. Soc., 445, 1932-1941 (2014/December-1)

Optical observations of the fast declining Type Ib supernova iPTF13bvn.


Abstract (from CDS):

We present optical UBVRI photometry and medium resolution spectroscopy of the Type Ib supernova iPTF13bvn, spanning a phase of ∼ -13d to +71d with respect to B-band maximum. The post-maximum decline rates indicate a fast decline with Δm15(B) = 1.82. Correcting for a Galactic extinction E(B - V)MW = 0.045 and host galaxy extinction of E(B - V)host = 0.17, the absolute V-band magnitude peaks at MV = -17.23±0.20. The bolometric light curve indicates that ∼ 0.09 M of 56Ni was synthesized in the explosion. The earliest spectrum (-13d) shows the presence of Hei 5876Å feature at a velocity of ∼ 15 000 km/s, which falls rapidly by the time the SN approaches the epoch of B-band maximum. The photospheric velocity near maximum light, as indicated by the FeII 5169Å feature, is ∼ 9000 km/s. The estimate for the 56Ni mass, together with the estimates for the ejected mass (Mej) and kinetic energy of the explosion (Ek) indicate that iPTF13bvn is a low-luminosity Type Ib supernova, with a lower than average ejected mass and kinetic energy. Our results suggest that the progenitor of iPTF13bvn is inconsistent with a single Wolf-Rayet star.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): supernovae: general - supernovae: individual: iPTF13bvn - galaxies: individual: NGC 5806

Simbad objects: 21

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