Type II Supernova Spectral Diversity. II. Spectroscopic and Photometric Correlations

Autores
Gutiérrez, Claudia P.; Anderson, Joseph P.; Hamuy, Mario; González Gaitan, Santiago; Galbany, Lluis; Dessart, Luc; Stritzinger, Maximilian D.; Phillips, Mark M.; Morrell, Nidia Irene; Folatelli, Gastón
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present an analysis of observed trends and correlations between a large range of spectral and photometric parameters of more than 100 type II supernovae (SNe II), during the photospheric phase. We define a common epoch for all SNe of 50 days post-explosion, where the majority of the sample is likely to be under similar physical conditions. Several correlation matrices are produced to search for interesting trends between more than 30 distinct light-curve and spectral properties that characterize the diversity of SNe II. Overall, SNe with higher expansion velocities are brighter, have more rapidly declining light curves, shorter plateau durations, and higher 56Ni masses. Using a larger sample than previous studies, we argue that "Pd" - the plateau duration from the transition of the initial to "plateau" decline rates to the end of the "plateau" - is a better indicator of the hydrogen envelope mass than the traditionally used optically thick phase duration (OPTd: explosion epoch to end of plateau). This argument is supported by the fact that Pd also correlates with s3, the light-curve decline rate at late times: lower Pd values correlate with larger s3 decline rates. Large s3 decline rates are likely related to lower envelope masses, which enables gamma-ray escape. We also find a significant anticorrelation between Pd and s2 (the plateau decline rate), confirming the long standing hypothesis that faster declining SNe II (SNe IIL) are the result of explosions with lower hydrogen envelope masses and therefore have shorter Pd values.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata
Materia
Ciencias Astronómicas
supernovae: general
surveys
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/87146

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network_name_str SEDICI (UNLP)
spelling Type II Supernova Spectral Diversity. II. Spectroscopic and Photometric CorrelationsGutiérrez, Claudia P.Anderson, Joseph P.Hamuy, MarioGonzález Gaitan, SantiagoGalbany, LluisDessart, LucStritzinger, Maximilian D.Phillips, Mark M.Morrell, Nidia IreneFolatelli, GastónCiencias Astronómicassupernovae: generalsurveysWe present an analysis of observed trends and correlations between a large range of spectral and photometric parameters of more than 100 type II supernovae (SNe II), during the photospheric phase. We define a common epoch for all SNe of 50 days post-explosion, where the majority of the sample is likely to be under similar physical conditions. Several correlation matrices are produced to search for interesting trends between more than 30 distinct light-curve and spectral properties that characterize the diversity of SNe II. Overall, SNe with higher expansion velocities are brighter, have more rapidly declining light curves, shorter plateau durations, and higher <sup>56</sup>Ni masses. Using a larger sample than previous studies, we argue that "<i>Pd</i>" - the plateau duration from the transition of the initial to "plateau" decline rates to the end of the "plateau" - is a better indicator of the hydrogen envelope mass than the traditionally used optically thick phase duration (<i>OPTd</i>: explosion epoch to end of plateau). This argument is supported by the fact that <i>Pd</i> also correlates with s<sub>3</sub>, the light-curve decline rate at late times: lower <i>Pd</i> values correlate with larger s<sub>3</sub> decline rates. Large s<sub>3</sub> decline rates are likely related to lower envelope masses, which enables gamma-ray escape. We also find a significant anticorrelation between <i>Pd</i> and s<sub>2</sub> (the plateau decline rate), confirming the long standing hypothesis that faster declining SNe II (SNe IIL) are the result of explosions with lower hydrogen envelope masses and therefore have shorter <i>Pd</i> values.Facultad de Ciencias Astronómicas y GeofísicasInstituto de Astrofísica de La Plata2017info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/87146enginfo:eu-repo/semantics/altIdentifier/issn/0004-637Xinfo:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/aa8f42info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:17:09Zoai:sedici.unlp.edu.ar:10915/87146Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:17:10.235SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Type II Supernova Spectral Diversity. II. Spectroscopic and Photometric Correlations
title Type II Supernova Spectral Diversity. II. Spectroscopic and Photometric Correlations
spellingShingle Type II Supernova Spectral Diversity. II. Spectroscopic and Photometric Correlations
Gutiérrez, Claudia P.
Ciencias Astronómicas
supernovae: general
surveys
title_short Type II Supernova Spectral Diversity. II. Spectroscopic and Photometric Correlations
title_full Type II Supernova Spectral Diversity. II. Spectroscopic and Photometric Correlations
title_fullStr Type II Supernova Spectral Diversity. II. Spectroscopic and Photometric Correlations
title_full_unstemmed Type II Supernova Spectral Diversity. II. Spectroscopic and Photometric Correlations
title_sort Type II Supernova Spectral Diversity. II. Spectroscopic and Photometric Correlations
dc.creator.none.fl_str_mv Gutiérrez, Claudia P.
Anderson, Joseph P.
Hamuy, Mario
González Gaitan, Santiago
Galbany, Lluis
Dessart, Luc
Stritzinger, Maximilian D.
Phillips, Mark M.
Morrell, Nidia Irene
Folatelli, Gastón
author Gutiérrez, Claudia P.
author_facet Gutiérrez, Claudia P.
Anderson, Joseph P.
Hamuy, Mario
González Gaitan, Santiago
Galbany, Lluis
Dessart, Luc
Stritzinger, Maximilian D.
Phillips, Mark M.
Morrell, Nidia Irene
Folatelli, Gastón
author_role author
author2 Anderson, Joseph P.
Hamuy, Mario
González Gaitan, Santiago
Galbany, Lluis
Dessart, Luc
Stritzinger, Maximilian D.
Phillips, Mark M.
Morrell, Nidia Irene
Folatelli, Gastón
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
supernovae: general
surveys
topic Ciencias Astronómicas
supernovae: general
surveys
dc.description.none.fl_txt_mv We present an analysis of observed trends and correlations between a large range of spectral and photometric parameters of more than 100 type II supernovae (SNe II), during the photospheric phase. We define a common epoch for all SNe of 50 days post-explosion, where the majority of the sample is likely to be under similar physical conditions. Several correlation matrices are produced to search for interesting trends between more than 30 distinct light-curve and spectral properties that characterize the diversity of SNe II. Overall, SNe with higher expansion velocities are brighter, have more rapidly declining light curves, shorter plateau durations, and higher <sup>56</sup>Ni masses. Using a larger sample than previous studies, we argue that "<i>Pd</i>" - the plateau duration from the transition of the initial to "plateau" decline rates to the end of the "plateau" - is a better indicator of the hydrogen envelope mass than the traditionally used optically thick phase duration (<i>OPTd</i>: explosion epoch to end of plateau). This argument is supported by the fact that <i>Pd</i> also correlates with s<sub>3</sub>, the light-curve decline rate at late times: lower <i>Pd</i> values correlate with larger s<sub>3</sub> decline rates. Large s<sub>3</sub> decline rates are likely related to lower envelope masses, which enables gamma-ray escape. We also find a significant anticorrelation between <i>Pd</i> and s<sub>2</sub> (the plateau decline rate), confirming the long standing hypothesis that faster declining SNe II (SNe IIL) are the result of explosions with lower hydrogen envelope masses and therefore have shorter <i>Pd</i> values.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata
description We present an analysis of observed trends and correlations between a large range of spectral and photometric parameters of more than 100 type II supernovae (SNe II), during the photospheric phase. We define a common epoch for all SNe of 50 days post-explosion, where the majority of the sample is likely to be under similar physical conditions. Several correlation matrices are produced to search for interesting trends between more than 30 distinct light-curve and spectral properties that characterize the diversity of SNe II. Overall, SNe with higher expansion velocities are brighter, have more rapidly declining light curves, shorter plateau durations, and higher <sup>56</sup>Ni masses. Using a larger sample than previous studies, we argue that "<i>Pd</i>" - the plateau duration from the transition of the initial to "plateau" decline rates to the end of the "plateau" - is a better indicator of the hydrogen envelope mass than the traditionally used optically thick phase duration (<i>OPTd</i>: explosion epoch to end of plateau). This argument is supported by the fact that <i>Pd</i> also correlates with s<sub>3</sub>, the light-curve decline rate at late times: lower <i>Pd</i> values correlate with larger s<sub>3</sub> decline rates. Large s<sub>3</sub> decline rates are likely related to lower envelope masses, which enables gamma-ray escape. We also find a significant anticorrelation between <i>Pd</i> and s<sub>2</sub> (the plateau decline rate), confirming the long standing hypothesis that faster declining SNe II (SNe IIL) are the result of explosions with lower hydrogen envelope masses and therefore have shorter <i>Pd</i> values.
publishDate 2017
dc.date.none.fl_str_mv 2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/87146
url http://sedici.unlp.edu.ar/handle/10915/87146
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0004-637X
info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/aa8f42
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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