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

Research output: Contribution to journalArticlepeer-review

Abstract

We present the detailed optical evolution of a Type Ib SN 2015dj in NGC 7371, using data spanning up to ∼170 days after discovery. SN 2015dj shares similarity in light-curve shape with SN 2007gr and peaks at M V = -17.37 0.02 mag. Analytical modeling of the quasi bolometric light curve yields 0.06 0.01 M o˙ of 56Ni, ejecta mass M o˙, and kinetic energy erg. The spectral features show a fast evolution and resemble those of spherically symmetric ejecta. The analysis of nebular phase spectral lines indicates a progenitor mass between 13-20 M o˙, suggesting a binary scenario.

Original languageEnglish
JournalAstrophysical Journal
Volume909
Issue number2
DOIs
StatePublished - 10 Mar 2021

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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