SN 2020wnt: a slow-evolving carbon-rich superluminous supernova with no O II lines and a bumpy light curve

Autores
Gutérrez, C. P.; Pastorello, A.; Bersten, Melina Cecilia; Benetti, S.; Orellana, Mariana Dominga; Fiore, A.; Karamehmetoglu, E.; Kravtsov, T.; Reguitti, A.; Reynolds, T. M.; Valerin, G.; Mazzali, P.; Sullivan, M.; Cai, Y. Z.; Elias Rosa, N.; Fraser, M.; Hsiao, E. Y.; Kankare, E.; Kotak, R.; Kuncarayakti, H.; Li, Z.; Mattila, S.; Mo, J.; Moran, S.; Ochner, P.; Shahbandeh, M.; Tomasella, L.; Wang, X.; Yan, S.; Zhang, J.; Zhang, T.; Stritzinger, M. D.
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present the analysis of SN 2020wnt, an unusual hydrogen-poor super-luminous supernova (SLSN-I), at a redshift of 0.032. The light curves of SN 2020wnt are characterised by an early bump lasting ~5 days, followed by a bright main peak. The SN reaches a peak absolute magnitude of Mr (at max)=-20.52 +/-0.03 mag at ~77.5 days from explosion. This magnitude is at the lower end of the luminosity distribution of SLSNe-I, but the rise-time is one of the longest reported to date. Unlike other SLSNe-I, the spectra of SN 2020wnt do not show O II, but strong lines of C II and Si II are detected. Spectroscopically, SN 2020wnt resembles the Type Ic SN 2007gr, but its evolution is significantly slower. Comparing the bolometric light curve to hydrodynamical models, we find that SN 2020wnt luminosity can be explained by radioactive powering. The progenitor of SN 2020wnt is likely a massive and extended star with a pre-SN mass of 80 Msun and a pre-SN radius of 15 Rsun that experiences a very energetic explosion of 45e51 erg, producing 4 Msun of 56Ni. In this framework, the first peak results from a post-shock cooling phase for an extended progenitor, and the luminous main peak is due to a large nickel production. These characteristics are compatible with the pair-instability SN scenario. We note, however, that a significant contribution of interaction with circumstellar material cannot be ruled out.
Fil: Gutérrez, C. P.. University Of Turku; Finlandia
Fil: Pastorello, A.. Istituto Nazionale di Astrofisica; Italia
Fil: Bersten, Melina Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Benetti, S.. Istituto Nazionale di Astrofisica; Italia
Fil: Orellana, Mariana Dominga. Universidad Nacional de Río Negro. Sede Andina; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Fiore, A.. No especifíca;
Fil: Karamehmetoglu, E.. No especifíca;
Fil: Kravtsov, T.. No especifíca;
Fil: Reguitti, A.. No especifíca;
Fil: Reynolds, T. M.. No especifíca;
Fil: Valerin, G.. No especifíca;
Fil: Mazzali, P.. No especifíca;
Fil: Sullivan, M.. No especifíca;
Fil: Cai, Y. Z.. No especifíca;
Fil: Elias Rosa, N.. No especifíca;
Fil: Fraser, M.. No especifíca;
Fil: Hsiao, E. Y.. No especifíca;
Fil: Kankare, E.. No especifíca;
Fil: Kotak, R.. No especifíca;
Fil: Kuncarayakti, H.. No especifíca;
Fil: Li, Z.. No especifíca;
Fil: Mattila, S.. No especifíca;
Fil: Mo, J.. No especifíca;
Fil: Moran, S.. No especifíca;
Fil: Ochner, P.. No especifíca;
Fil: Shahbandeh, M.. No especifíca;
Fil: Tomasella, L.. No especifíca;
Fil: Wang, X.. No especifíca;
Fil: Yan, S.. No especifíca;
Fil: Zhang, J.. No especifíca;
Fil: Zhang, T.. No especifíca;
Fil: Stritzinger, M. D.. No especifíca;
Materia
SUPERNOVAE: GENERAL
SUPERNOVAE: INDIVIDUAL: SN2020WNT
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/218566

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network_name_str CONICET Digital (CONICET)
spelling SN 2020wnt: a slow-evolving carbon-rich superluminous supernova with no O II lines and a bumpy light curveGutérrez, C. P.Pastorello, A.Bersten, Melina CeciliaBenetti, S.Orellana, Mariana DomingaFiore, A.Karamehmetoglu, E.Kravtsov, T.Reguitti, A.Reynolds, T. M.Valerin, G.Mazzali, P.Sullivan, M.Cai, Y. Z.Elias Rosa, N.Fraser, M.Hsiao, E. Y.Kankare, E.Kotak, R.Kuncarayakti, H.Li, Z.Mattila, S.Mo, J.Moran, S.Ochner, P.Shahbandeh, M.Tomasella, L.Wang, X.Yan, S.Zhang, J.Zhang, T.Stritzinger, M. D.SUPERNOVAE: GENERALSUPERNOVAE: INDIVIDUAL: SN2020WNThttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present the analysis of SN 2020wnt, an unusual hydrogen-poor super-luminous supernova (SLSN-I), at a redshift of 0.032. The light curves of SN 2020wnt are characterised by an early bump lasting ~5 days, followed by a bright main peak. The SN reaches a peak absolute magnitude of Mr (at max)=-20.52 +/-0.03 mag at ~77.5 days from explosion. This magnitude is at the lower end of the luminosity distribution of SLSNe-I, but the rise-time is one of the longest reported to date. Unlike other SLSNe-I, the spectra of SN 2020wnt do not show O II, but strong lines of C II and Si II are detected. Spectroscopically, SN 2020wnt resembles the Type Ic SN 2007gr, but its evolution is significantly slower. Comparing the bolometric light curve to hydrodynamical models, we find that SN 2020wnt luminosity can be explained by radioactive powering. The progenitor of SN 2020wnt is likely a massive and extended star with a pre-SN mass of 80 Msun and a pre-SN radius of 15 Rsun that experiences a very energetic explosion of 45e51 erg, producing 4 Msun of 56Ni. In this framework, the first peak results from a post-shock cooling phase for an extended progenitor, and the luminous main peak is due to a large nickel production. These characteristics are compatible with the pair-instability SN scenario. We note, however, that a significant contribution of interaction with circumstellar material cannot be ruled out.Fil: Gutérrez, C. P.. University Of Turku; FinlandiaFil: Pastorello, A.. Istituto Nazionale di Astrofisica; ItaliaFil: Bersten, Melina Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Benetti, S.. Istituto Nazionale di Astrofisica; ItaliaFil: Orellana, Mariana Dominga. Universidad Nacional de Río Negro. Sede Andina; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Fiore, A.. No especifíca;Fil: Karamehmetoglu, E.. No especifíca;Fil: Kravtsov, T.. No especifíca;Fil: Reguitti, A.. No especifíca;Fil: Reynolds, T. M.. No especifíca;Fil: Valerin, G.. No especifíca;Fil: Mazzali, P.. No especifíca;Fil: Sullivan, M.. No especifíca;Fil: Cai, Y. Z.. No especifíca;Fil: Elias Rosa, N.. No especifíca;Fil: Fraser, M.. No especifíca;Fil: Hsiao, E. Y.. No especifíca;Fil: Kankare, E.. No especifíca;Fil: Kotak, R.. No especifíca;Fil: Kuncarayakti, H.. No especifíca;Fil: Li, Z.. No especifíca;Fil: Mattila, S.. No especifíca;Fil: Mo, J.. No especifíca;Fil: Moran, S.. No especifíca;Fil: Ochner, P.. No especifíca;Fil: Shahbandeh, M.. No especifíca;Fil: Tomasella, L.. No especifíca;Fil: Wang, X.. No especifíca;Fil: Yan, S.. No especifíca;Fil: Zhang, J.. No especifíca;Fil: Zhang, T.. No especifíca;Fil: Stritzinger, M. D.. No especifíca;Wiley Blackwell Publishing, Inc2022-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/zipapplication/pdfhttp://hdl.handle.net/11336/218566Gutérrez, C. P.; Pastorello, A.; Bersten, Melina Cecilia; Benetti, S.; Orellana, Mariana Dominga; et al.; SN 2020wnt: a slow-evolving carbon-rich superluminous supernova with no O II lines and a bumpy light curve; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 517; 12-2022; 2056-20750035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/2206.01662info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:37:13Zoai:ri.conicet.gov.ar:11336/218566instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:37:13.858CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv SN 2020wnt: a slow-evolving carbon-rich superluminous supernova with no O II lines and a bumpy light curve
title SN 2020wnt: a slow-evolving carbon-rich superluminous supernova with no O II lines and a bumpy light curve
spellingShingle SN 2020wnt: a slow-evolving carbon-rich superluminous supernova with no O II lines and a bumpy light curve
Gutérrez, C. P.
SUPERNOVAE: GENERAL
SUPERNOVAE: INDIVIDUAL: SN2020WNT
title_short SN 2020wnt: a slow-evolving carbon-rich superluminous supernova with no O II lines and a bumpy light curve
title_full SN 2020wnt: a slow-evolving carbon-rich superluminous supernova with no O II lines and a bumpy light curve
title_fullStr SN 2020wnt: a slow-evolving carbon-rich superluminous supernova with no O II lines and a bumpy light curve
title_full_unstemmed SN 2020wnt: a slow-evolving carbon-rich superluminous supernova with no O II lines and a bumpy light curve
title_sort SN 2020wnt: a slow-evolving carbon-rich superluminous supernova with no O II lines and a bumpy light curve
dc.creator.none.fl_str_mv Gutérrez, C. P.
Pastorello, A.
Bersten, Melina Cecilia
Benetti, S.
Orellana, Mariana Dominga
Fiore, A.
Karamehmetoglu, E.
Kravtsov, T.
Reguitti, A.
Reynolds, T. M.
Valerin, G.
Mazzali, P.
Sullivan, M.
Cai, Y. Z.
Elias Rosa, N.
Fraser, M.
Hsiao, E. Y.
Kankare, E.
Kotak, R.
Kuncarayakti, H.
Li, Z.
Mattila, S.
Mo, J.
Moran, S.
Ochner, P.
Shahbandeh, M.
Tomasella, L.
Wang, X.
Yan, S.
Zhang, J.
Zhang, T.
Stritzinger, M. D.
author Gutérrez, C. P.
author_facet Gutérrez, C. P.
Pastorello, A.
Bersten, Melina Cecilia
Benetti, S.
Orellana, Mariana Dominga
Fiore, A.
Karamehmetoglu, E.
Kravtsov, T.
Reguitti, A.
Reynolds, T. M.
Valerin, G.
Mazzali, P.
Sullivan, M.
Cai, Y. Z.
Elias Rosa, N.
Fraser, M.
Hsiao, E. Y.
Kankare, E.
Kotak, R.
Kuncarayakti, H.
Li, Z.
Mattila, S.
Mo, J.
Moran, S.
Ochner, P.
Shahbandeh, M.
Tomasella, L.
Wang, X.
Yan, S.
Zhang, J.
Zhang, T.
Stritzinger, M. D.
author_role author
author2 Pastorello, A.
Bersten, Melina Cecilia
Benetti, S.
Orellana, Mariana Dominga
Fiore, A.
Karamehmetoglu, E.
Kravtsov, T.
Reguitti, A.
Reynolds, T. M.
Valerin, G.
Mazzali, P.
Sullivan, M.
Cai, Y. Z.
Elias Rosa, N.
Fraser, M.
Hsiao, E. Y.
Kankare, E.
Kotak, R.
Kuncarayakti, H.
Li, Z.
Mattila, S.
Mo, J.
Moran, S.
Ochner, P.
Shahbandeh, M.
Tomasella, L.
Wang, X.
Yan, S.
Zhang, J.
Zhang, T.
Stritzinger, M. D.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv SUPERNOVAE: GENERAL
SUPERNOVAE: INDIVIDUAL: SN2020WNT
topic SUPERNOVAE: GENERAL
SUPERNOVAE: INDIVIDUAL: SN2020WNT
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present the analysis of SN 2020wnt, an unusual hydrogen-poor super-luminous supernova (SLSN-I), at a redshift of 0.032. The light curves of SN 2020wnt are characterised by an early bump lasting ~5 days, followed by a bright main peak. The SN reaches a peak absolute magnitude of Mr (at max)=-20.52 +/-0.03 mag at ~77.5 days from explosion. This magnitude is at the lower end of the luminosity distribution of SLSNe-I, but the rise-time is one of the longest reported to date. Unlike other SLSNe-I, the spectra of SN 2020wnt do not show O II, but strong lines of C II and Si II are detected. Spectroscopically, SN 2020wnt resembles the Type Ic SN 2007gr, but its evolution is significantly slower. Comparing the bolometric light curve to hydrodynamical models, we find that SN 2020wnt luminosity can be explained by radioactive powering. The progenitor of SN 2020wnt is likely a massive and extended star with a pre-SN mass of 80 Msun and a pre-SN radius of 15 Rsun that experiences a very energetic explosion of 45e51 erg, producing 4 Msun of 56Ni. In this framework, the first peak results from a post-shock cooling phase for an extended progenitor, and the luminous main peak is due to a large nickel production. These characteristics are compatible with the pair-instability SN scenario. We note, however, that a significant contribution of interaction with circumstellar material cannot be ruled out.
Fil: Gutérrez, C. P.. University Of Turku; Finlandia
Fil: Pastorello, A.. Istituto Nazionale di Astrofisica; Italia
Fil: Bersten, Melina Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Benetti, S.. Istituto Nazionale di Astrofisica; Italia
Fil: Orellana, Mariana Dominga. Universidad Nacional de Río Negro. Sede Andina; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Fiore, A.. No especifíca;
Fil: Karamehmetoglu, E.. No especifíca;
Fil: Kravtsov, T.. No especifíca;
Fil: Reguitti, A.. No especifíca;
Fil: Reynolds, T. M.. No especifíca;
Fil: Valerin, G.. No especifíca;
Fil: Mazzali, P.. No especifíca;
Fil: Sullivan, M.. No especifíca;
Fil: Cai, Y. Z.. No especifíca;
Fil: Elias Rosa, N.. No especifíca;
Fil: Fraser, M.. No especifíca;
Fil: Hsiao, E. Y.. No especifíca;
Fil: Kankare, E.. No especifíca;
Fil: Kotak, R.. No especifíca;
Fil: Kuncarayakti, H.. No especifíca;
Fil: Li, Z.. No especifíca;
Fil: Mattila, S.. No especifíca;
Fil: Mo, J.. No especifíca;
Fil: Moran, S.. No especifíca;
Fil: Ochner, P.. No especifíca;
Fil: Shahbandeh, M.. No especifíca;
Fil: Tomasella, L.. No especifíca;
Fil: Wang, X.. No especifíca;
Fil: Yan, S.. No especifíca;
Fil: Zhang, J.. No especifíca;
Fil: Zhang, T.. No especifíca;
Fil: Stritzinger, M. D.. No especifíca;
description We present the analysis of SN 2020wnt, an unusual hydrogen-poor super-luminous supernova (SLSN-I), at a redshift of 0.032. The light curves of SN 2020wnt are characterised by an early bump lasting ~5 days, followed by a bright main peak. The SN reaches a peak absolute magnitude of Mr (at max)=-20.52 +/-0.03 mag at ~77.5 days from explosion. This magnitude is at the lower end of the luminosity distribution of SLSNe-I, but the rise-time is one of the longest reported to date. Unlike other SLSNe-I, the spectra of SN 2020wnt do not show O II, but strong lines of C II and Si II are detected. Spectroscopically, SN 2020wnt resembles the Type Ic SN 2007gr, but its evolution is significantly slower. Comparing the bolometric light curve to hydrodynamical models, we find that SN 2020wnt luminosity can be explained by radioactive powering. The progenitor of SN 2020wnt is likely a massive and extended star with a pre-SN mass of 80 Msun and a pre-SN radius of 15 Rsun that experiences a very energetic explosion of 45e51 erg, producing 4 Msun of 56Ni. In this framework, the first peak results from a post-shock cooling phase for an extended progenitor, and the luminous main peak is due to a large nickel production. These characteristics are compatible with the pair-instability SN scenario. We note, however, that a significant contribution of interaction with circumstellar material cannot be ruled out.
publishDate 2022
dc.date.none.fl_str_mv 2022-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/218566
Gutérrez, C. P.; Pastorello, A.; Bersten, Melina Cecilia; Benetti, S.; Orellana, Mariana Dominga; et al.; SN 2020wnt: a slow-evolving carbon-rich superluminous supernova with no O II lines and a bumpy light curve; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 517; 12-2022; 2056-2075
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/218566
identifier_str_mv Gutérrez, C. P.; Pastorello, A.; Bersten, Melina Cecilia; Benetti, S.; Orellana, Mariana Dominga; et al.; SN 2020wnt: a slow-evolving carbon-rich superluminous supernova with no O II lines and a bumpy light curve; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 517; 12-2022; 2056-2075
0035-8711
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/2206.01662
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/zip
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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