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SN 2020pvb: a Type IIn-P supernova with a precursor outburst

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arxiv 2402.02924 v1 pith:A3JYEFU3 submitted 2024-02-05 astro-ph.SR astro-ph.HE

Nancy Elias-Rosa , Seán J. Brennan , Stefano Benetti , Enrico Cappellaro , Andrea Pastorello , Alexandra Kozyreva , Peter Lundqvist , Morgan Fraser
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Joseph P. Anderso Yong-Zhi Cai Ting-Wan Chen Michel Dennefeld Mariusz Gromadzki Claudia P. Gutiérrez Nada Ihanec Cosimo Inserra Erkki Kankare Rubina Kotak Seppo Mattila Shane Moran Tomás E. Müller-Bravo Priscila J. Pessi Giuliano Pignata Andrea Reguitti Thomas M. Reynolds Stephen J. Smartt Ken Smith Leonardo Tartaglia Giorgio Valerin Thomas de Boer Kenneth Chambers Avishay Gal-Yam Hua Gao Stefan Geier Paolo A. Mazzali Matt Nicholl Fabio Ragosta Armin Rest Ofer Yaron David R. Young
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classification astro-ph.SRastro-ph.HE
keywords outburstbeforeiin-pprogenitorsupernovatypeb-banddays
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We present photometric and spectroscopic data sets for SN 2020pvb, a Type IIn-P supernova (SN) 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 peaking at M_B = -17.95 +- 0.30 mag and a plateau lasting at least 40 days before it went in solar conjunction. After this, the object is no longer visible at phases > 150 days above -12.5 mag in the B-band, suggesting that the SN 2020pvb ejecta interacts with a dense spatially confined circumstellar envelope. SN 2020pvb shows in its spectra strong Balmer lines and a forest of FeII lines with narrow P Cygni profiles. Using archival images from the Hubble Space Telescope, we constrain the progenitor of SN 2020pvb to have a luminosity of log(L/L_sun) <= 5.4, ruling out any single star progenitor over 50 M_sun. All in all, SN 2020pvb is a Type IIn-P whose progenitor star had an outburst ~ 0.5 yr before the final explosion, the material lost during this outburst is probably playing a role in shaping the physical properties of the supernova.

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Cited by 2 Pith papers

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  1. The progenitors and circumstellar environments of stripped-envelope interacting supernovae from BPASS

    astro-ph.HE 2026-08 conditional novelty 6.0 of 10

    Using BPASS, only binary progenitors whose mass loss forms a circum-binary disc reproduce the luminosities and rise times of stripped-envelope interacting supernovae.

  2. SN 2022xus: bridging the gap between Type IIP and IIL supernovae

    astro-ph.HE 2026-07 conditional novelty 4.0 of 10

    SN 2022xus is a transitional Type II supernova with a 94.8-day plateau, a decline rate of 1.23 mag per 100 days, mixed IIP/IIL spectral features, and a likely 12-15 solar-mass progenitor.

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