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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/87146
Ver los metadatos del registro completo
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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 |
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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) |
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openAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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