Variability in Early Post-main-sequence Stars in Globular Cluster NGC 3201

Autores
Ulloa Solis, D.; Cortes C.; Villanova, S.; Llancaqueo, A.; Ahumada, Javier Alejandro; Parisi, Maria Celeste
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this paper we study stellar variability in the globular cluster NGC 3201 in the magnitude range V = 16-17, corresponding to the subgiant branch and blue stragglers region of the cluster. Our aim is to expand the sample of new type of variables with low amplitude and a short period found in previous papers. We used observations obtained at the Complejo Astronómico El Leoncito. We applied statistical tests and analyzed periodograms obtained by generalized Lomb-Scargle and phase dispersion minimization methods. We found five stars considered as variables and one as a possible variable. According to their periods (fluctuating between 0.33 and 0.57 days), amplitudes (between 0.03 and 0.87 V magnitudes), the position in the color-magnitude diagram, and the shape of their phased light curves, they do not resemble any known variable star. Because stellar variability could be produced by more than one process, we propose to complement this work with a spectroscopic analysis to confirm our results.
Fil: Ulloa Solis, D.. Universidad de Concepcion; Chile
Fil: Cortes C.. Universidad de Talca; Chile
Fil: Villanova, S.. Universidad de Concepcion; Chile
Fil: Llancaqueo, A.. Universidad de Concepcion; Chile
Fil: Ahumada, Javier Alejandro. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Parisi, Maria Celeste. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Materia
Globular Star Clusters
Variable Stars
Evolved Stars
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/248974
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Variability in Early Post-main-sequence Stars in Globular Cluster NGC 3201Ulloa Solis, D.Cortes C.Villanova, S.Llancaqueo, A.Ahumada, Javier AlejandroParisi, Maria CelesteGlobular Star ClustersVariable StarsEvolved Starshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1In this paper we study stellar variability in the globular cluster NGC 3201 in the magnitude range V = 16-17, corresponding to the subgiant branch and blue stragglers region of the cluster. Our aim is to expand the sample of new type of variables with low amplitude and a short period found in previous papers. We used observations obtained at the Complejo Astronómico El Leoncito. We applied statistical tests and analyzed periodograms obtained by generalized Lomb-Scargle and phase dispersion minimization methods. We found five stars considered as variables and one as a possible variable. According to their periods (fluctuating between 0.33 and 0.57 days), amplitudes (between 0.03 and 0.87 V magnitudes), the position in the color-magnitude diagram, and the shape of their phased light curves, they do not resemble any known variable star. Because stellar variability could be produced by more than one process, we propose to complement this work with a spectroscopic analysis to confirm our results.Fil: Ulloa Solis, D.. Universidad de Concepcion; ChileFil: Cortes C.. Universidad de Talca; ChileFil: Villanova, S.. Universidad de Concepcion; ChileFil: Llancaqueo, A.. Universidad de Concepcion; ChileFil: Ahumada, Javier Alejandro. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaFil: Parisi, Maria Celeste. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaIOP Publishing2023-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/248974Ulloa Solis, D.; Cortes C.; Villanova, S.; Llancaqueo, A.; Ahumada, Javier Alejandro; et al.; Variability in Early Post-main-sequence Stars in Globular Cluster NGC 3201; IOP Publishing; Astronomical Journal; 166; 6; 11-2023; 26-350004-6256CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-3881/ad0734info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-3881/ad0734info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:00:14Zoai:ri.conicet.gov.ar:11336/248974instacron: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 10:00:14.591CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Variability in Early Post-main-sequence Stars in Globular Cluster NGC 3201
title Variability in Early Post-main-sequence Stars in Globular Cluster NGC 3201
spellingShingle Variability in Early Post-main-sequence Stars in Globular Cluster NGC 3201
Ulloa Solis, D.
Globular Star Clusters
Variable Stars
Evolved Stars
title_short Variability in Early Post-main-sequence Stars in Globular Cluster NGC 3201
title_full Variability in Early Post-main-sequence Stars in Globular Cluster NGC 3201
title_fullStr Variability in Early Post-main-sequence Stars in Globular Cluster NGC 3201
title_full_unstemmed Variability in Early Post-main-sequence Stars in Globular Cluster NGC 3201
title_sort Variability in Early Post-main-sequence Stars in Globular Cluster NGC 3201
dc.creator.none.fl_str_mv Ulloa Solis, D.
Cortes C.
Villanova, S.
Llancaqueo, A.
Ahumada, Javier Alejandro
Parisi, Maria Celeste
author Ulloa Solis, D.
author_facet Ulloa Solis, D.
Cortes C.
Villanova, S.
Llancaqueo, A.
Ahumada, Javier Alejandro
Parisi, Maria Celeste
author_role author
author2 Cortes C.
Villanova, S.
Llancaqueo, A.
Ahumada, Javier Alejandro
Parisi, Maria Celeste
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Globular Star Clusters
Variable Stars
Evolved Stars
topic Globular Star Clusters
Variable Stars
Evolved Stars
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In this paper we study stellar variability in the globular cluster NGC 3201 in the magnitude range V = 16-17, corresponding to the subgiant branch and blue stragglers region of the cluster. Our aim is to expand the sample of new type of variables with low amplitude and a short period found in previous papers. We used observations obtained at the Complejo Astronómico El Leoncito. We applied statistical tests and analyzed periodograms obtained by generalized Lomb-Scargle and phase dispersion minimization methods. We found five stars considered as variables and one as a possible variable. According to their periods (fluctuating between 0.33 and 0.57 days), amplitudes (between 0.03 and 0.87 V magnitudes), the position in the color-magnitude diagram, and the shape of their phased light curves, they do not resemble any known variable star. Because stellar variability could be produced by more than one process, we propose to complement this work with a spectroscopic analysis to confirm our results.
Fil: Ulloa Solis, D.. Universidad de Concepcion; Chile
Fil: Cortes C.. Universidad de Talca; Chile
Fil: Villanova, S.. Universidad de Concepcion; Chile
Fil: Llancaqueo, A.. Universidad de Concepcion; Chile
Fil: Ahumada, Javier Alejandro. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Parisi, Maria Celeste. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
description In this paper we study stellar variability in the globular cluster NGC 3201 in the magnitude range V = 16-17, corresponding to the subgiant branch and blue stragglers region of the cluster. Our aim is to expand the sample of new type of variables with low amplitude and a short period found in previous papers. We used observations obtained at the Complejo Astronómico El Leoncito. We applied statistical tests and analyzed periodograms obtained by generalized Lomb-Scargle and phase dispersion minimization methods. We found five stars considered as variables and one as a possible variable. According to their periods (fluctuating between 0.33 and 0.57 days), amplitudes (between 0.03 and 0.87 V magnitudes), the position in the color-magnitude diagram, and the shape of their phased light curves, they do not resemble any known variable star. Because stellar variability could be produced by more than one process, we propose to complement this work with a spectroscopic analysis to confirm our results.
publishDate 2023
dc.date.none.fl_str_mv 2023-11
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/11336/248974
Ulloa Solis, D.; Cortes C.; Villanova, S.; Llancaqueo, A.; Ahumada, Javier Alejandro; et al.; Variability in Early Post-main-sequence Stars in Globular Cluster NGC 3201; IOP Publishing; Astronomical Journal; 166; 6; 11-2023; 26-35
0004-6256
CONICET Digital
CONICET
url http://hdl.handle.net/11336/248974
identifier_str_mv Ulloa Solis, D.; Cortes C.; Villanova, S.; Llancaqueo, A.; Ahumada, Javier Alejandro; et al.; Variability in Early Post-main-sequence Stars in Globular Cluster NGC 3201; IOP Publishing; Astronomical Journal; 166; 6; 11-2023; 26-35
0004-6256
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://iopscience.iop.org/article/10.3847/1538-3881/ad0734
info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-3881/ad0734
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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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score 13.070432

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