| Title: |
SN 2018ijp: the explosion of a stripped-envelope star within a dense H-rich shell? |
| Authors: |
Tartaglia, L., Sollerman, J., Barbarino, C., Taddia, F., Mason, E., Berton, M., Taggart, K., Bellm, E. C., De, K., Frederick, S., Fremling, C., Gal-Yam, A., Golkhou, V. Z., Graham, M., Ho, A. Y. Q., Hung, T., Kaye, S., Kim, Y. L., Laher, R. R., Masci, F. J., Perley, D. A., Porter, M. D., Reiley, D. J., Riddle, R., Rusholme, B., Soumagnac, M. T., Walters, R. |
| Source: |
A&A 650, A174 (2021) |
| Publication Year: |
2020 |
| Collection: |
Astrophysics |
| Subject Terms: |
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Solar and Stellar Astrophysics |
| More Details: |
In this paper, we discuss the outcomes of the follow-up campaign of SN 2018ijp, discovered as part of the Zwicky Transient Facility survey for optical transients. Its first spectrum shows similarities to broad-lined Type Ic supernovae around maximum light, whereas later spectra display strong signatures of interaction between rapidly expanding ejecta and a dense H-rich circumstellar medium, coinciding with a second peak in the photometric evolution of the transient. This evolution, along with the results of modeling of the first light curve peak, suggests a scenario where a stripped star exploded within a dense circumstellar medium. The two main phases in the evolution of the transient could be interpreted as a first phase dominated by radioactive decays, and an later interaction-dominated phase where the ejecta collide with a pre-existing shell. We therefore discuss SN 2018jp within the context of a massive star depleted of its outer layers exploding within a dense H-rich circumstellar medium.
Comment: Accepted for publication on Astronomy and Astrophysics. 11 pages, 10 figures, 1 table. Photometric table available at the CDS |
| Document Type: |
Working Paper |
| DOI: |
10.1051/0004-6361/202039068 |
| Access URL: |
http://arxiv.org/abs/2009.03331 |
| Accession Number: |
edsarx.2009.03331 |
| Database: |
arXiv |
