IIA Institutional Repository

Broad-line Type Ic supernova SN 2014ad

Show simple item record

dc.contributor.author Sahu, D. K
dc.contributor.author Anupama, G. C
dc.contributor.author Chakradhari, N. K
dc.contributor.author Srivastav, S
dc.contributor.author Tanaka, M
dc.contributor.author Maeda, K
dc.contributor.author Nomoto, K
dc.date.accessioned 2020-11-11T01:39:59Z
dc.date.available 2020-11-11T01:39:59Z
dc.date.issued 2018-04
dc.identifier.citation Monthly Notices of the Royal Astronomical Society, Vol. 475, No. 2, pp. 2591-2604 en_US
dc.identifier.issn 1365-2966
dc.identifier.uri http://prints.iiap.res.in/handle/2248/6887
dc.description Restricted Access © Royal Astronomical Society; https://doi.org/10.1093/mnras/stx3212 en_US
dc.description.abstract We present optical and ultraviolet photometry and low-resolution optical spectroscopy of the broad-line Type Ic supernova SN 2014ad in the galaxy PGC 37625 (Mrk 1309), covering the evolution of the supernova during −5 to +87 d with respect to the date of maximum in the B band. A late-phase spectrum obtained at +340 d is also presented. With an absolute V-band magnitude at peak of MV = −18.86 ± 0.23 mag, SN 2014ad is fainter than supernovae associated with gamma ray bursts (GRBs), and brighter than most of the normal and broad-line Type Ic supernovae without an associated GRB. The spectral evolution indicates that the expansion velocity of the ejecta, as measured using the Si II line, is as high as ∼33 500 km s−1 around maximum, while during the post-maximum phase it settles at ∼15 000 km s−1. The expansion velocity of SN 2014ad is higher than that of all other well-observed broad-line Type Ic supernovae except for the GRB-associated SN 2010bh. The explosion parameters, determined by applying Arnett's analytical light-curve model to the observed bolometric light-curve, indicate that it was an energetic explosion with a kinetic energy of ∼(1 ± 0.3) × 1052 erg and a total ejected mass of ∼(3.3 ± 0.8) M⊙, and that ∼0.24 M⊙ of 56Ni was synthesized in the explosion. The metallicity of the host galaxy near the supernova region is estimated to be ∼0.5 Z⊙. en_US
dc.language.iso en en_US
dc.publisher Oxford University Press on behalf of the Royal Astronomical Society en_US
dc.subject Techniques: photometric en_US
dc.subject Techniques: spectroscopic en_US
dc.subject Supernovae: general en_US
dc.subject Supernovae: individual: SN 2014ad en_US
dc.subject Galaxies: individual: Mrk 1309 en_US
dc.title Broad-line Type Ic supernova SN 2014ad en_US
dc.type Article en_US

Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


My Account