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

Elias-Rosa, N.; Brennan, S.J.; Benetti, S.; Cappellaro, E.; Pastorello, A.; Kozyreva, A.; Lundqvist, P.; Fraser, M.; Anderson, J.P.; Cai, Y.Z.; Chen, T.W.; Dennefeld, M.; Gromadzki, M.; Gutiérrez, C.P.; Ihanec, N.; Inserra, C.; Kankare, E.; Kotak, R.; Mattila, S.; Moran, S.; Müller-Bravo, T.E.; Pessi, P.J.; Pignata, G.; Reguitti, A.; Reynolds, T.M.; Smartt, S.J.; Smith, K.; Tartaglia, L.; Valerin, G.; De Boer, T.; Chambers, K.; Gal-Yam, A.; Gao, H.; Geier, S.; Mazzali, P.A.; Nicholl, M.; Ragosta, F.; Rest, A.; Yaron, O.; Young, D.R.
SN 2020pvb: A Type IIn-P supernova with a precursor outburst

Elias-Rosa, N.
Brennan, S.J.
Benetti, S.
Cappellaro, E.
Pastorello, A.
Kozyreva, A.
Lundqvist, P.
Fraser, M.
Anderson, J.P.
Cai, Y.Z.
Chen, T.W.
Dennefeld, M.
Gromadzki, M.
Gutiérrez, C.P.
Ihanec, N.
Inserra, C.
Kankare, E.
Kotak, R.
Mattila, S.
Moran, S.
Müller-Bravo, T.E.
Pessi, P.J.
Pignata, G.
Reguitti, A.
Reynolds, T.M.
Smartt, S.J.
Smith, K.
Tartaglia, L.
Valerin, G.
De Boer, T.
Chambers, K.
Gal-Yam, A.
Gao, H.
Geier, S.
Mazzali, P.A.
Nicholl, M.
Ragosta, F.
Rest, A.
Yaron, O.
Young, D.R.
Katso/Avaa
Lataukset: 

EDP Sciences
doi:10.1051/0004-6361/202348790
URI
https://doi.org/10.1051/0004-6361/202348790
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Julkaisun pysyvä osoite on:
https://urn.fi/URN:NBN:fi-fe2025082788756
Tiivistelmä
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.
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