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http://hdl.handle.net/2248/7399| Title: | Flash Ionization Signatures in the Type Ibn Supernova SN 2019uo |
| Authors: | Gangopadhyay, A Misra, K Hiramatsu, D Wang, Shan-Qin Hosseinzadeh, G Wang, Xiaofeng Valenti, Stefano Zhang, Jujia Howel, D. A Arcavi, Iair Anupama, G. C Burke, Jamison Dastidar, Raya Koichi Itagaki, Koichi Kumar, Brajesh Kumar, B Li, Long McCully, Curtis Mo, Jun Pandey, S. B Pellegrino, Craig Sa, Hanna Sahu, D. K Pankaj Sanwal Singh, A Singh, M Zhang, Jicheng Zhang, Tianmeng Zhang, Xinhan |
| Keywords: | Core-collapse supernovae Supernovae CCD photometry Photometry Spectroscopy Astronomical techniques |
| Issue Date: | 1-Feb-2020 |
| Publisher: | IOP Publishing |
| Citation: | The Astrophysical Journal, Vol. 889, No. 2, 170 |
| Abstract: | We present photometric and spectroscopic observations of the type Ibn supernova (SN) 2019uo, the second ever SN Ibn with flash ionization (He ii, C iii, N iii) features in its early spectra. SN 2019uo displays a rapid post-peak luminosity decline of 0.1 mag day−1 similar to most of the SNe Ibn, but is fainter(M max = - 18.30 + 0.24 mag) than a typical SN Ibn and shows a color evolution that places it between SNe Ib and the most extreme SNe Ibn. SN 2019uo shows P-cygni He i features in the early spectra which gradually evolve and become emission dominated post peak. It also shows faster evolution in line velocities as compared to most other members of the type Ibn subclass. The bolometric light curve is fairly well described by a 56Ni + circumstellar interaction model. |
| Description: | Restricted Access |
| URI: | http://prints.iiap.res.in/handle/2248/7399 |
| ISSN: | 0004-637X |
| Appears in Collections: | IIAP Publications |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Flash Ionization Signatures in the Type Ibn Supernova SN 2019uo.pdf Restricted Access | 4.94 MB | Adobe PDF | View/Open Request a copy |
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