The Fast-evolving Type Ib Supernova SN 2015dj in NGC 7371
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 MV = -17.37 ± 0.02 mag. Analytical modeling of the quasi bolometric light curve yields 0.06 ± 0.01 M⊙ of 56Ni, ejecta mass ${M}_{\mathrm{ej}}={1.4}_{-0.5}^{+1.3}$ M⊙, and kinetic energy ${E}_{{\rm{k}}}={0.7}_{-0.3}^{+0.6}\times {10}^{51}$ erg. The spectral features show a fast evolution and resemble those of spherically symmetric ejecta. The analysis of nebular phase spectral lines indicates a progenitor mass between 13-20 M⊙, suggesting a binary scenario.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- March 2021
- DOI:
- 10.3847/1538-4357/abdf5c
- arXiv:
- arXiv:2101.09430
- Bibcode:
- 2021ApJ...909..100S
- Keywords:
-
- Type Ib supernovae;
- Core-collapse supernovae;
- 1729;
- 304;
- Astrophysics - High Energy Astrophysical Phenomena;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- 16 pages, 11 figures, accepted for publication in ApJ