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arXiv · 2101.09430

The fast evolving type Ib Supernova SN 2015dj in NGC 7371

Mridweeka Singh·Kuntal Misra·Stefano Valenti·Griffin Hosseinzadeh·Andrea Pastorello·Shubham Srivastav·Anjasha Gangopadhyay·Raya Dastidar·Lina Tomasella·Iair Arcavi·Stefano Benetti·Emma Callis·Enrico Cappellaro·Nancy Elias-Rosa·D. Andrew Howell·Sang Chul Kim·Curtis McCully·Leonardo Tartaglia·Giacomo Terreran·Massimo Turatto
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Abstract

We present the detailed optical evolution of a type Ib SN 2015dj in NGC 7371, using data spanning up to $\sim$ 170 days after discovery. SN 2015dj shares similarity in light curve shape with SN 2007gr and peaks at M$_{V}$ = $-17.37\pm$0.02 mag. Analytical modelling of the quasi bolometric light curve yields 0.06$\pm$0.01 M$_{\odot}$ of $^{56}$Ni, ejecta mass $M_{\rm ej} = 1.4^{+1.3}_{-0.5}$ \msol\, and kinetic energy $E_{\rm k} = 0.7^{+0.6}_{-0.3} \times 10^{51}$ erg. The spectral features show a fast evolution and resemble those of spherically symmetric ejecta. The analysis of nebular phase spectral lines indicate a progenitor mass between 13-20 M$_{\odot}$ suggesting a binary scenario.

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Mridweeka Singh, Kuntal Misra, Stefano Valenti, Griffin Hosseinzadeh, Andrea Pastorello, Shubham Srivastav, Anjasha Gangopadhyay, Raya Dastidar, Lina Tomasella, Iair Arcavi, Stefano Benetti, Emma Callis, Enrico Cappellaro, Nancy Elias-Rosa, D. Andrew Howell, Sang Chul Kim, Curtis McCully, Leonardo Tartaglia, Giacomo Terreran, Massimo Turatto. 2021-01-23. The fast evolving type Ib Supernova SN 2015dj in NGC 7371. https://doi.org/10.3847/1538-4357/abdf5c

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