Abstract Details
| Name: Shubham Srivastav Affiliation: Indian Institute of Astrophysics Conference ID: ASI2015_724 Title : Optical and NIR observations of nearby supernova SN 2014J Authors and Co-Authors : J. P. Ninan (TIFR) G. C. Anupama (IIA) D. K. Sahu (IIA) D. K. Ojha (TIFR) Abstract Type : Poster Abstract Category : Extragalactic astronomy Abstract : We present optical and NIR observations of the type Ia supernova SN 2014J, hosted by the nearby galaxy M82. The photospheric velocity near the epoch of B-band maximum, deduced using the Si II 6355 feature is $\sim$ 12000 km/sec, which is at the border of spectroscopically normal and High Velocity (HV) SNe Ia. NIR spectra obtained near B-band maximum show broad features due to Mg II near 1.1 microns and Si II/ Mg II blend near 1.6 micron. The spectra, along with the bolometric light curve constructed using broadband magnitudes spanning UV to NIR, suggest that SN 2014J is essentially a normal, albeit a highly reddened type Ia supernova, with a decline rate parameter of $\Delta m_{15} \sim 1.1$ in the B-band and a $^{56}$Ni yield of $\sim 0.6$ M$_{\odot}$. |