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DC Field | Value | Language |
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dc.contributor.author | Srivastav, S | - |
dc.contributor.author | Anupama, G. C | - |
dc.contributor.author | Sahu, D. K | - |
dc.date.accessioned | 2014-10-22T07:09:16Z | - |
dc.date.available | 2014-10-22T07:09:16Z | - |
dc.date.issued | 2014-12-01 | - |
dc.identifier.citation | Monthly Notices of the Royal Astronomical Society, Vol. 445, No. 2, pp. 1932-1941 | en |
dc.identifier.uri | http://hdl.handle.net/2248/6668 | - |
dc.description | Restricted Access | en |
dc.description.abstract | We present optical UBVRI photometry and medium resolution spectroscopy of the Type Ib supernova iPTF13bvn, spanning a phase of ∼−13 d to +71 d 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 (−13 d) shows the presence of He i 5876 Å feature at a velocity of ∼15 000 km s−1, 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 Fe ii 5169 Å feature, is ∼9000 km s−1. 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. | en |
dc.language.iso | en | en |
dc.publisher | Oxford University Press on behalf of the Royal Astronomical Society | en |
dc.relation.uri | http://mnras.oxfordjournals.org/content/445/2/1932 | en |
dc.rights | © Royal Astronomical Society | en |
dc.subject | Supernovae: general | en |
dc.subject | Supernovae: individual: iPTF13bvn | en |
dc.subject | Galaxies: individual: NGC 5806 | en |
dc.title | Optical observations of the fast declining Type Ib supernova iPTF13bvn | en |
dc.type | Article | en |
Appears in Collections: | IIAP Publications |
Files in This Item:
File | Description | Size | Format | |
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Optical observations of the fast declining Type Ib supernova .pdf Restricted Access | Restricted Access | 1.16 MB | Adobe PDF | View/Open Request a copy |
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