New variable stars discovered in the fields of three Galactic open clusters using the VVV survey
- Autores
- Palma, Tali; Minniti, Dante; Dékány, I.; Clariá, Juan José; Alonso García, J.; Gramajo, Luciana Veronica; Ramírez Alegría, S.; Bonatto, C.
- Año de publicación
- 2016
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- This project is a massive near-infrared (NIR) search for variable stars in highly reddened and obscured open cluster (OC) fields projected on regions of the Galactic bulge and disk. The search is performed using photometric NIR data in the J-, H- and Ks- bands obtained from the Vista Variables in the Vía Láctea (VVV) Survey. We performed in each cluster field a variability search using Stetson's variability statistics to select the variable candidates. Later, those candidates were subjected to a frequency analysis using the Generalized Lomb-Scargle and the Phase Dispersion Minimization algorithms. The number of independent observations range between 63 and 73. The newly discovered variables in this study, 157 in total in three different known OCs, are classified based on their light curve shapes, periods, amplitudes and their location in the corresponding color-magnitude (J−Ks,Ks) and color-color (H−Ks,J−H) diagrams. We found 5 possible Cepheid stars which, based on the period-luminosity relation, are very likely type II Cepheids located behind the bulge. Among the newly discovered variables, there are eclipsing binaries, δ Scuti, as well as background RR Lyrae stars. Using the new version of the Wilson & Devinney code as well as the “Physics Of Eclipsing Binaries” (PHOEBE) code, we analyzed some of the best eclipsing binaries we discovered. Our results show that these studied systems turn out to be ranging from detached to double-contact binaries, with low eccentricities and high inclinations of approximately 80°. Their surface temperatures range between 3500 K and 8000 K.
Fil: Palma, Tali. Millennium Institute of Astrophysics; Chile. Universidad Andrés Bello; Chile
Fil: Minniti, Dante. Millennium Institute of Astrophysics; Chile. Universidad Andrés Bello; Chile
Fil: Dékány, I.. Millennium Institute of Astrophysics; Chile. Pontificia Universidad Católica de Chile; Chile
Fil: Clariá, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Alonso García, J.. Millennium Institute of Astrophysics; Chile. Universidad de Antofagasta; Chile
Fil: Gramajo, Luciana Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Ramírez Alegría, S.. Millennium Institute of Astrophysics; Chile. Universidad de Valparaíso; Chile
Fil: Bonatto, C.. Universidade Federal do Rio Grande do Sul; Brasil - Materia
-
Antalova&Nbsp;1
Ascc&Nbsp;90
Eso&Nbsp;393-15 &Ndash; Stars
Galaxy
General
Individual
Stellar Content &Ndash; Open Clusters And Associations
Variables - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/72310
Ver los metadatos del registro completo
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CONICET Digital (CONICET) |
spelling |
New variable stars discovered in the fields of three Galactic open clusters using the VVV surveyPalma, TaliMinniti, DanteDékány, I.Clariá, Juan JoséAlonso García, J.Gramajo, Luciana VeronicaRamírez Alegría, S.Bonatto, C.Antalova&Nbsp;1Ascc&Nbsp;90Eso&Nbsp;393-15 &Ndash; StarsGalaxyGeneralIndividualStellar Content &Ndash; Open Clusters And AssociationsVariableshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1This project is a massive near-infrared (NIR) search for variable stars in highly reddened and obscured open cluster (OC) fields projected on regions of the Galactic bulge and disk. The search is performed using photometric NIR data in the J-, H- and Ks- bands obtained from the Vista Variables in the Vía Láctea (VVV) Survey. We performed in each cluster field a variability search using Stetson's variability statistics to select the variable candidates. Later, those candidates were subjected to a frequency analysis using the Generalized Lomb-Scargle and the Phase Dispersion Minimization algorithms. The number of independent observations range between 63 and 73. The newly discovered variables in this study, 157 in total in three different known OCs, are classified based on their light curve shapes, periods, amplitudes and their location in the corresponding color-magnitude (J−Ks,Ks) and color-color (H−Ks,J−H) diagrams. We found 5 possible Cepheid stars which, based on the period-luminosity relation, are very likely type II Cepheids located behind the bulge. Among the newly discovered variables, there are eclipsing binaries, δ Scuti, as well as background RR Lyrae stars. Using the new version of the Wilson & Devinney code as well as the “Physics Of Eclipsing Binaries” (PHOEBE) code, we analyzed some of the best eclipsing binaries we discovered. Our results show that these studied systems turn out to be ranging from detached to double-contact binaries, with low eccentricities and high inclinations of approximately 80°. Their surface temperatures range between 3500 K and 8000 K.Fil: Palma, Tali. Millennium Institute of Astrophysics; Chile. Universidad Andrés Bello; ChileFil: Minniti, Dante. Millennium Institute of Astrophysics; Chile. Universidad Andrés Bello; ChileFil: Dékány, I.. Millennium Institute of Astrophysics; Chile. Pontificia Universidad Católica de Chile; ChileFil: Clariá, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaFil: Alonso García, J.. Millennium Institute of Astrophysics; Chile. Universidad de Antofagasta; ChileFil: Gramajo, Luciana Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaFil: Ramírez Alegría, S.. Millennium Institute of Astrophysics; Chile. Universidad de Valparaíso; ChileFil: Bonatto, C.. Universidade Federal do Rio Grande do Sul; BrasilElsevier Science2016-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/72310Palma, Tali; Minniti, Dante; Dékány, I.; Clariá, Juan José; Alonso García, J.; et al.; New variable stars discovered in the fields of three Galactic open clusters using the VVV survey; Elsevier Science; New Astronomy; 49; 11-2016; 50-621384-1076CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/1606.05028info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S138410761630032Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.newast.2016.05.008info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:48:45Zoai:ri.conicet.gov.ar:11336/72310instacron: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 09:48:45.384CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
New variable stars discovered in the fields of three Galactic open clusters using the VVV survey |
title |
New variable stars discovered in the fields of three Galactic open clusters using the VVV survey |
spellingShingle |
New variable stars discovered in the fields of three Galactic open clusters using the VVV survey Palma, Tali Antalova&Nbsp;1 Ascc&Nbsp;90 Eso&Nbsp;393-15 &Ndash; Stars Galaxy General Individual Stellar Content &Ndash; Open Clusters And Associations Variables |
title_short |
New variable stars discovered in the fields of three Galactic open clusters using the VVV survey |
title_full |
New variable stars discovered in the fields of three Galactic open clusters using the VVV survey |
title_fullStr |
New variable stars discovered in the fields of three Galactic open clusters using the VVV survey |
title_full_unstemmed |
New variable stars discovered in the fields of three Galactic open clusters using the VVV survey |
title_sort |
New variable stars discovered in the fields of three Galactic open clusters using the VVV survey |
dc.creator.none.fl_str_mv |
Palma, Tali Minniti, Dante Dékány, I. Clariá, Juan José Alonso García, J. Gramajo, Luciana Veronica Ramírez Alegría, S. Bonatto, C. |
author |
Palma, Tali |
author_facet |
Palma, Tali Minniti, Dante Dékány, I. Clariá, Juan José Alonso García, J. Gramajo, Luciana Veronica Ramírez Alegría, S. Bonatto, C. |
author_role |
author |
author2 |
Minniti, Dante Dékány, I. Clariá, Juan José Alonso García, J. Gramajo, Luciana Veronica Ramírez Alegría, S. Bonatto, C. |
author2_role |
author author author author author author author |
dc.subject.none.fl_str_mv |
Antalova&Nbsp;1 Ascc&Nbsp;90 Eso&Nbsp;393-15 &Ndash; Stars Galaxy General Individual Stellar Content &Ndash; Open Clusters And Associations Variables |
topic |
Antalova&Nbsp;1 Ascc&Nbsp;90 Eso&Nbsp;393-15 &Ndash; Stars Galaxy General Individual Stellar Content &Ndash; Open Clusters And Associations Variables |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
This project is a massive near-infrared (NIR) search for variable stars in highly reddened and obscured open cluster (OC) fields projected on regions of the Galactic bulge and disk. The search is performed using photometric NIR data in the J-, H- and Ks- bands obtained from the Vista Variables in the Vía Láctea (VVV) Survey. We performed in each cluster field a variability search using Stetson's variability statistics to select the variable candidates. Later, those candidates were subjected to a frequency analysis using the Generalized Lomb-Scargle and the Phase Dispersion Minimization algorithms. The number of independent observations range between 63 and 73. The newly discovered variables in this study, 157 in total in three different known OCs, are classified based on their light curve shapes, periods, amplitudes and their location in the corresponding color-magnitude (J−Ks,Ks) and color-color (H−Ks,J−H) diagrams. We found 5 possible Cepheid stars which, based on the period-luminosity relation, are very likely type II Cepheids located behind the bulge. Among the newly discovered variables, there are eclipsing binaries, δ Scuti, as well as background RR Lyrae stars. Using the new version of the Wilson & Devinney code as well as the “Physics Of Eclipsing Binaries” (PHOEBE) code, we analyzed some of the best eclipsing binaries we discovered. Our results show that these studied systems turn out to be ranging from detached to double-contact binaries, with low eccentricities and high inclinations of approximately 80°. Their surface temperatures range between 3500 K and 8000 K. Fil: Palma, Tali. Millennium Institute of Astrophysics; Chile. Universidad Andrés Bello; Chile Fil: Minniti, Dante. Millennium Institute of Astrophysics; Chile. Universidad Andrés Bello; Chile Fil: Dékány, I.. Millennium Institute of Astrophysics; Chile. Pontificia Universidad Católica de Chile; Chile Fil: Clariá, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina Fil: Alonso García, J.. Millennium Institute of Astrophysics; Chile. Universidad de Antofagasta; Chile Fil: Gramajo, Luciana Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina Fil: Ramírez Alegría, S.. Millennium Institute of Astrophysics; Chile. Universidad de Valparaíso; Chile Fil: Bonatto, C.. Universidade Federal do Rio Grande do Sul; Brasil |
description |
This project is a massive near-infrared (NIR) search for variable stars in highly reddened and obscured open cluster (OC) fields projected on regions of the Galactic bulge and disk. The search is performed using photometric NIR data in the J-, H- and Ks- bands obtained from the Vista Variables in the Vía Láctea (VVV) Survey. We performed in each cluster field a variability search using Stetson's variability statistics to select the variable candidates. Later, those candidates were subjected to a frequency analysis using the Generalized Lomb-Scargle and the Phase Dispersion Minimization algorithms. The number of independent observations range between 63 and 73. The newly discovered variables in this study, 157 in total in three different known OCs, are classified based on their light curve shapes, periods, amplitudes and their location in the corresponding color-magnitude (J−Ks,Ks) and color-color (H−Ks,J−H) diagrams. We found 5 possible Cepheid stars which, based on the period-luminosity relation, are very likely type II Cepheids located behind the bulge. Among the newly discovered variables, there are eclipsing binaries, δ Scuti, as well as background RR Lyrae stars. Using the new version of the Wilson & Devinney code as well as the “Physics Of Eclipsing Binaries” (PHOEBE) code, we analyzed some of the best eclipsing binaries we discovered. Our results show that these studied systems turn out to be ranging from detached to double-contact binaries, with low eccentricities and high inclinations of approximately 80°. Their surface temperatures range between 3500 K and 8000 K. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-11 |
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/11336/72310 Palma, Tali; Minniti, Dante; Dékány, I.; Clariá, Juan José; Alonso García, J.; et al.; New variable stars discovered in the fields of three Galactic open clusters using the VVV survey; Elsevier Science; New Astronomy; 49; 11-2016; 50-62 1384-1076 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/72310 |
identifier_str_mv |
Palma, Tali; Minniti, Dante; Dékány, I.; Clariá, Juan José; Alonso García, J.; et al.; New variable stars discovered in the fields of three Galactic open clusters using the VVV survey; Elsevier Science; New Astronomy; 49; 11-2016; 50-62 1384-1076 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/1606.05028 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S138410761630032X info:eu-repo/semantics/altIdentifier/doi/10.1016/j.newast.2016.05.008 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Science |
publisher.none.fl_str_mv |
Elsevier Science |
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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1844613512361410560 |
score |
13.070432 |