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dc.contributor.author
Ulloa Solis, D.  
dc.contributor.author
Cortes C.  
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Villanova, S.  
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Llancaqueo, A.  
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Ahumada, Javier Alejandro  
dc.contributor.author
Parisi, Maria Celeste  
dc.date.available
2024-11-29T11:02:40Z  
dc.date.issued
2023-11  
dc.identifier.citation
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  
dc.identifier.issn
0004-6256  
dc.identifier.uri
http://hdl.handle.net/11336/248974  
dc.description.abstract
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.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
IOP Publishing  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/  
dc.subject
Globular Star Clusters  
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Variable Stars  
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Evolved Stars  
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Astronomía  
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Ciencias Físicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Variability in Early Post-main-sequence Stars in Globular Cluster NGC 3201  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2024-11-22T11:38:41Z  
dc.journal.volume
166  
dc.journal.number
6  
dc.journal.pagination
26-35  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: Ulloa Solis, D.. Universidad de Concepcion; Chile  
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Fil: Cortes C.. Universidad de Talca; Chile  
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Fil: Villanova, S.. Universidad de Concepcion; Chile  
dc.description.fil
Fil: Llancaqueo, A.. Universidad de Concepcion; Chile  
dc.description.fil
Fil: Ahumada, Javier Alejandro. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina  
dc.description.fil
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  
dc.journal.title
Astronomical Journal  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-3881/ad0734  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3847/1538-3881/ad0734