Variability in NGC 3201 Giant Stars
- Autores
- Cortés, C. C.; Llancaqueo Albornoz, Á.; Villanova, S.; Ahumada, Javier Alejandro; Parisi, Maria Celeste
- Año de publicación
- 2023
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present the analysis of 510 light curves in V and I bands of 255 giant stars in the globular cluster NGC 3201.Our aim is to expand the sample of new types of variables reported in a previous study. These variables show ashort period (PV < 0.6 day) and a low amplitude (A(V ) < 0.06 mag.). We first searched for variability using thegeneralized Lomb?Scargle and phase dispersion minimization periodograms of the sample, discarding 167 stars asnon-variables. We then applied the significance test and reduced the sample to 88 giants, of which we classified 18as possible variables, 11 as dubious, 41 as non-variables, and 18 as variables. We finally determined the clustermembership of this sample and grouped each star based on their light-curve shape. The discovered variables showperiods in the range 0.2440 < PV < 0.5868 days and amplitudes between 0.010 < A(V ) < 0.064 mag. Within thesample of 18 variable stars, we report the discovery of an object with a period PV = 0.3603 ± 0.0012 and amplitudeA(V ) = 0.703 ± 0.029 mag that shows a RR Lyrae ab-type light curve. Additionally, we report two RR Lyrae aband c types with ultralow amplitude.
Fil: Cortés, C. C.. Universidad de Talca; Chile
Fil: Llancaqueo Albornoz, Á.. Universidad de Concepcion; Chile
Fil: Villanova, S.. 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 - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/248975
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Variability in NGC 3201 Giant StarsCortés, C. C.Llancaqueo Albornoz, Á.Villanova, S.Ahumada, Javier AlejandroParisi, Maria CelesteGLOBULAR STAR CLUSTERSVARIABLE STARShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present the analysis of 510 light curves in V and I bands of 255 giant stars in the globular cluster NGC 3201.Our aim is to expand the sample of new types of variables reported in a previous study. These variables show ashort period (PV < 0.6 day) and a low amplitude (A(V ) < 0.06 mag.). We first searched for variability using thegeneralized Lomb?Scargle and phase dispersion minimization periodograms of the sample, discarding 167 stars asnon-variables. We then applied the significance test and reduced the sample to 88 giants, of which we classified 18as possible variables, 11 as dubious, 41 as non-variables, and 18 as variables. We finally determined the clustermembership of this sample and grouped each star based on their light-curve shape. The discovered variables showperiods in the range 0.2440 < PV < 0.5868 days and amplitudes between 0.010 < A(V ) < 0.064 mag. Within thesample of 18 variable stars, we report the discovery of an object with a period PV = 0.3603 ± 0.0012 and amplitudeA(V ) = 0.703 ± 0.029 mag that shows a RR Lyrae ab-type light curve. Additionally, we report two RR Lyrae aband c types with ultralow amplitude.Fil: Cortés, C. C.. Universidad de Talca; ChileFil: Llancaqueo Albornoz, Á.. Universidad de Concepcion; ChileFil: Villanova, S.. 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 Publishing2023-09info: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/11336/248975Cortés, C. C.; Llancaqueo Albornoz, Á.; Villanova, S.; Ahumada, Javier Alejandro; Parisi, Maria Celeste; Variability in NGC 3201 Giant Stars; IOP Publishing; Astronomical Journal; 166; 3; 9-2023; 1-150004-6256CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3847/1538-3881/ace111info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-3881/ace111info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:54:15Zoai:ri.conicet.gov.ar:11336/248975instacron: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 09:54:15.476CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Variability in NGC 3201 Giant Stars |
title |
Variability in NGC 3201 Giant Stars |
spellingShingle |
Variability in NGC 3201 Giant Stars Cortés, C. C. GLOBULAR STAR CLUSTERS VARIABLE STARS |
title_short |
Variability in NGC 3201 Giant Stars |
title_full |
Variability in NGC 3201 Giant Stars |
title_fullStr |
Variability in NGC 3201 Giant Stars |
title_full_unstemmed |
Variability in NGC 3201 Giant Stars |
title_sort |
Variability in NGC 3201 Giant Stars |
dc.creator.none.fl_str_mv |
Cortés, C. C. Llancaqueo Albornoz, Á. Villanova, S. Ahumada, Javier Alejandro Parisi, Maria Celeste |
author |
Cortés, C. C. |
author_facet |
Cortés, C. C. Llancaqueo Albornoz, Á. Villanova, S. Ahumada, Javier Alejandro Parisi, Maria Celeste |
author_role |
author |
author2 |
Llancaqueo Albornoz, Á. Villanova, S. Ahumada, Javier Alejandro Parisi, Maria Celeste |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
GLOBULAR STAR CLUSTERS VARIABLE STARS |
topic |
GLOBULAR STAR CLUSTERS VARIABLE 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 |
We present the analysis of 510 light curves in V and I bands of 255 giant stars in the globular cluster NGC 3201.Our aim is to expand the sample of new types of variables reported in a previous study. These variables show ashort period (PV < 0.6 day) and a low amplitude (A(V ) < 0.06 mag.). We first searched for variability using thegeneralized Lomb?Scargle and phase dispersion minimization periodograms of the sample, discarding 167 stars asnon-variables. We then applied the significance test and reduced the sample to 88 giants, of which we classified 18as possible variables, 11 as dubious, 41 as non-variables, and 18 as variables. We finally determined the clustermembership of this sample and grouped each star based on their light-curve shape. The discovered variables showperiods in the range 0.2440 < PV < 0.5868 days and amplitudes between 0.010 < A(V ) < 0.064 mag. Within thesample of 18 variable stars, we report the discovery of an object with a period PV = 0.3603 ± 0.0012 and amplitudeA(V ) = 0.703 ± 0.029 mag that shows a RR Lyrae ab-type light curve. Additionally, we report two RR Lyrae aband c types with ultralow amplitude. Fil: Cortés, C. C.. Universidad de Talca; Chile Fil: Llancaqueo Albornoz, Á.. Universidad de Concepcion; Chile Fil: Villanova, S.. 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 |
We present the analysis of 510 light curves in V and I bands of 255 giant stars in the globular cluster NGC 3201.Our aim is to expand the sample of new types of variables reported in a previous study. These variables show ashort period (PV < 0.6 day) and a low amplitude (A(V ) < 0.06 mag.). We first searched for variability using thegeneralized Lomb?Scargle and phase dispersion minimization periodograms of the sample, discarding 167 stars asnon-variables. We then applied the significance test and reduced the sample to 88 giants, of which we classified 18as possible variables, 11 as dubious, 41 as non-variables, and 18 as variables. We finally determined the clustermembership of this sample and grouped each star based on their light-curve shape. The discovered variables showperiods in the range 0.2440 < PV < 0.5868 days and amplitudes between 0.010 < A(V ) < 0.064 mag. Within thesample of 18 variable stars, we report the discovery of an object with a period PV = 0.3603 ± 0.0012 and amplitudeA(V ) = 0.703 ± 0.029 mag that shows a RR Lyrae ab-type light curve. Additionally, we report two RR Lyrae aband c types with ultralow amplitude. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-09 |
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/11336/248975 Cortés, C. C.; Llancaqueo Albornoz, Á.; Villanova, S.; Ahumada, Javier Alejandro; Parisi, Maria Celeste; Variability in NGC 3201 Giant Stars; IOP Publishing; Astronomical Journal; 166; 3; 9-2023; 1-15 0004-6256 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/248975 |
identifier_str_mv |
Cortés, C. C.; Llancaqueo Albornoz, Á.; Villanova, S.; Ahumada, Javier Alejandro; Parisi, Maria Celeste; Variability in NGC 3201 Giant Stars; IOP Publishing; Astronomical Journal; 166; 3; 9-2023; 1-15 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/doi/10.3847/1538-3881/ace111 info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-3881/ace111 |
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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13.070432 |