GEMINI/GMOS search for massive binaries in the ionizing cluster of 30 DOR
- Autores
- Bosch, Guillermo Luis; Terlevich, Elena; Terlevich, Roberto
- Año de publicación
- 2009
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- If binaries are common among massive stars, it will have important consequences for the derivation of fundamental properties such as the cluster age, initial mass function, and dynamical mass. Making use of the multiplexing facilities of the Gemini Multi-Object Spectrograph, we were able to investigate the presence of binary stars within the ionizing cluster of 30 Doradus. From a seven-epoch observing campaign at Gemini South we detect a binary candidate rate of about 50%, which is consistent with an intrinsic 100% binary rate among massive stars. We find that single-epoch determinations of the velocity dispersion give values around 30 km s−1. After correcting the global velocity dispersion for the binary orbital motions, the “true” cluster velocity dispersion is 8.3 km s−1. This value implies a virial mass of about 4.5 × 105 M or 8% of the mass calculated using the single-epoch value. The binary corrected virial mass estimate is consistent with photometric mass determinations, thus suggesting that NGC 2070 is a firm candidate for a future globular cluster.
Fil: Bosch, Guillermo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Terlevich, Elena. INAOE; México
Fil: Terlevich, Roberto. INAOE; México - Materia
-
Massive stars
Spectroscopic binaries
Galaxies
Clusters
Magellanic Clouds
Early type stars
kinematics 1. IN - 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:11336/42799
Ver los metadatos del registro completo
id |
CONICETDig_f69b5e573e1c689f33be580801ac52c3 |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/42799 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
GEMINI/GMOS search for massive binaries in the ionizing cluster of 30 DORBosch, Guillermo LuisTerlevich, ElenaTerlevich, RobertoMassive starsSpectroscopic binariesGalaxiesClustersMagellanic CloudsEarly type starskinematics 1. INhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1If binaries are common among massive stars, it will have important consequences for the derivation of fundamental properties such as the cluster age, initial mass function, and dynamical mass. Making use of the multiplexing facilities of the Gemini Multi-Object Spectrograph, we were able to investigate the presence of binary stars within the ionizing cluster of 30 Doradus. From a seven-epoch observing campaign at Gemini South we detect a binary candidate rate of about 50%, which is consistent with an intrinsic 100% binary rate among massive stars. We find that single-epoch determinations of the velocity dispersion give values around 30 km s−1. After correcting the global velocity dispersion for the binary orbital motions, the “true” cluster velocity dispersion is 8.3 km s−1. This value implies a virial mass of about 4.5 × 105 M or 8% of the mass calculated using the single-epoch value. The binary corrected virial mass estimate is consistent with photometric mass determinations, thus suggesting that NGC 2070 is a firm candidate for a future globular cluster.Fil: Bosch, Guillermo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Terlevich, Elena. INAOE; MéxicoFil: Terlevich, Roberto. INAOE; MéxicoIOP Publishing2009-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/42799Bosch, Guillermo Luis; Terlevich, Elena; Terlevich, Roberto; GEMINI/GMOS search for massive binaries in the ionizing cluster of 30 DOR; IOP Publishing; Astronomical Journal; 137; 2; 12-2009; 3437-34410004-6256CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/0004-6256/137/2/3437info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-6256/137/2/3437/metainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:08:11Zoai:ri.conicet.gov.ar:11336/42799instacron: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 10:08:12.059CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
GEMINI/GMOS search for massive binaries in the ionizing cluster of 30 DOR |
title |
GEMINI/GMOS search for massive binaries in the ionizing cluster of 30 DOR |
spellingShingle |
GEMINI/GMOS search for massive binaries in the ionizing cluster of 30 DOR Bosch, Guillermo Luis Massive stars Spectroscopic binaries Galaxies Clusters Magellanic Clouds Early type stars kinematics 1. IN |
title_short |
GEMINI/GMOS search for massive binaries in the ionizing cluster of 30 DOR |
title_full |
GEMINI/GMOS search for massive binaries in the ionizing cluster of 30 DOR |
title_fullStr |
GEMINI/GMOS search for massive binaries in the ionizing cluster of 30 DOR |
title_full_unstemmed |
GEMINI/GMOS search for massive binaries in the ionizing cluster of 30 DOR |
title_sort |
GEMINI/GMOS search for massive binaries in the ionizing cluster of 30 DOR |
dc.creator.none.fl_str_mv |
Bosch, Guillermo Luis Terlevich, Elena Terlevich, Roberto |
author |
Bosch, Guillermo Luis |
author_facet |
Bosch, Guillermo Luis Terlevich, Elena Terlevich, Roberto |
author_role |
author |
author2 |
Terlevich, Elena Terlevich, Roberto |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Massive stars Spectroscopic binaries Galaxies Clusters Magellanic Clouds Early type stars kinematics 1. IN |
topic |
Massive stars Spectroscopic binaries Galaxies Clusters Magellanic Clouds Early type stars kinematics 1. IN |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
If binaries are common among massive stars, it will have important consequences for the derivation of fundamental properties such as the cluster age, initial mass function, and dynamical mass. Making use of the multiplexing facilities of the Gemini Multi-Object Spectrograph, we were able to investigate the presence of binary stars within the ionizing cluster of 30 Doradus. From a seven-epoch observing campaign at Gemini South we detect a binary candidate rate of about 50%, which is consistent with an intrinsic 100% binary rate among massive stars. We find that single-epoch determinations of the velocity dispersion give values around 30 km s−1. After correcting the global velocity dispersion for the binary orbital motions, the “true” cluster velocity dispersion is 8.3 km s−1. This value implies a virial mass of about 4.5 × 105 M or 8% of the mass calculated using the single-epoch value. The binary corrected virial mass estimate is consistent with photometric mass determinations, thus suggesting that NGC 2070 is a firm candidate for a future globular cluster. Fil: Bosch, Guillermo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina Fil: Terlevich, Elena. INAOE; México Fil: Terlevich, Roberto. INAOE; México |
description |
If binaries are common among massive stars, it will have important consequences for the derivation of fundamental properties such as the cluster age, initial mass function, and dynamical mass. Making use of the multiplexing facilities of the Gemini Multi-Object Spectrograph, we were able to investigate the presence of binary stars within the ionizing cluster of 30 Doradus. From a seven-epoch observing campaign at Gemini South we detect a binary candidate rate of about 50%, which is consistent with an intrinsic 100% binary rate among massive stars. We find that single-epoch determinations of the velocity dispersion give values around 30 km s−1. After correcting the global velocity dispersion for the binary orbital motions, the “true” cluster velocity dispersion is 8.3 km s−1. This value implies a virial mass of about 4.5 × 105 M or 8% of the mass calculated using the single-epoch value. The binary corrected virial mass estimate is consistent with photometric mass determinations, thus suggesting that NGC 2070 is a firm candidate for a future globular cluster. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-12 |
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/11336/42799 Bosch, Guillermo Luis; Terlevich, Elena; Terlevich, Roberto; GEMINI/GMOS search for massive binaries in the ionizing cluster of 30 DOR; IOP Publishing; Astronomical Journal; 137; 2; 12-2009; 3437-3441 0004-6256 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/42799 |
identifier_str_mv |
Bosch, Guillermo Luis; Terlevich, Elena; Terlevich, Roberto; GEMINI/GMOS search for massive binaries in the ionizing cluster of 30 DOR; IOP Publishing; Astronomical Journal; 137; 2; 12-2009; 3437-3441 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/10.1088/0004-6256/137/2/3437 info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-6256/137/2/3437/meta |
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 |
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 |
_version_ |
1844613948785033216 |
score |
13.070432 |