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Elias-Rosa, N, Brennan, SJ, Benetti, S, Cappellaro, E, Pastorello, A, Kozyreva, A, Lundqvist, P, Fraser, M, Anderson, JP, Cai, YZ, Chen, TW, Dennefeld, M, Gromadzki, M, Gutiérrez, CP, Ihanec, N, Inserra, C, Kankare, E, Kotak, R, Mattila, S, Moran, S , Müller-Bravo, TE, Pessi, PJ, Pignata, G, Reguitti, A, Reynolds, TM, Smartt, SJ, Smith, K, Tartaglia, L, Valerin, G, De Boer, T, Chambers, K, Gal-Yam, A, Gao, H, Geier, S, Mazzali, PA, Nicholl, M, Ragosta, F, Rest, A, Yaron, O and Young, DR (2024) SN 2020pvb: A Type IIn-P supernova with a precursor outburst. Astronomy & Astrophysics, 686. ISSN 0004-6361
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SN 2020pvb A Type IIn-P supernova with a precursor outburst.pdf - Published Version Available under License Creative Commons Attribution. Download (2MB) | Preview |
Abstract
We present photometric and spectroscopic datasets for SN 2020pvb, a Type IIn-P supernova (SN) that is similar to SNe 1994W, 2005cl, 2009kn, and 2011ht, with a precursor outburst detected (PS1 w band ∼- 13.8 mag) around four months before the B-band maximum light. SN 2020pvb presents a relatively bright light curve that peaked at MB = -17.95 ± 0.30 mag and a plateau that lasted at least 40 days before going into solar conjunction. After this, the object was no longer visible at phases > 150 days above - 12.5 mag in the B band, suggesting that the SN 2020pvb ejecta interact with a dense, spatially confined circumstellar envelope. SN 2020pvb shows strong Balmer lines and a forest of Fe II lines with narrow P Cygni profiles in its spectra. Using archival images from the Hubble Space Telescope, we constrained the progenitor of SN 2020pvb to have a luminosity of log(L/L⊙)≤5.4, ruling out any single star progenitor over 50 M⊙. SN 2020pvb is a Type IIn-P whose progenitor star had an outburst*sim;0.5 yr before the final explosion; the material lost during this outburst probably plays a role in shaping the physical properties of the SN.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 0201 Astronomical and Space Sciences; Astronomy & Astrophysics |
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
| Divisions: | Astrophysics Research Institute |
| Publisher: | EDP Sciences |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 24 Sep 2024 11:45 |
| Last Modified: | 24 Sep 2024 12:00 |
| DOI or ID number: | 10.1051/0004-6361/202348790 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/24255 |
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