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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/218566
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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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1844614392110383104 |
score |
13.070432 |