Abstract Details

Name: Raya Dastidar
Affiliation: Aryabhatta Research Institute of observational sciencES
Conference ID: ASI2021_499
Title : Transitional type II Supernovae (SNe): A case study of SN 2016B
Authors and Co-Authors : Raya Dastidar (ARIES), Kuntal Misra (ARIES), Mridweeka Singh (KASI), Devendra Kumar Sahu (IIA), Andrea Pastorello (INAF), Anjasha Gangopadhyay (ARIES)
Abstract Type : Poster
Abstract Category : Extragalactic Astronomy
Abstract : Type II SNe, the hydrogen-rich explosions in massive stars, are classified as 'plateau' (IIP) and 'linear' (IIL) based on the presence of a roughly constant luminosity phase or a linearly declining photospheric phase, respectively, in their light curve, at epochs post peak brightness. However, there has been much debate over this sub-classification, with some authors advocating a distinct separation of classes and others arguing in favour of continuity. In this work, we present the early light curve analysis of SN 2016B, a type II SN displaying characteristics of both the type IIP and IIL subclasses. The early light curve features serve as a handle in constraining the progenitor properties of SNe. By modelling the light curve of SN 2016B, we estimated a ZAMS mass of 16 Msun and an external radius of 1600 Rsun suggesting that the presence of a dense circumstellar medium close to the progenitor is the sole factor responsible for the diversity in the light curve of type II SNe.