The ionising cluster of 30 Doradus : IV. Stellar kinematics
- Autores
- Bosch, Guillermo Luis; Selman, F.; Melnick, J.; Terlevich, R.
- Año de publicación
- 2001
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- On the basis of multislit spectroscopy of 180 stars in the ionising cluster of 30 Doradus we present reliable radial velocities for 55 stars. We calculate a radial velocity dispersion of ∼35 km s-1 for the cluster and we analyse the possible influence of spectroscopic binaries in this rather large velocity dispersion. We use numerical simulations to show that the observations are consistent with the hypothesis that all the stars in the cluster are binaries, and the total mass of the cluster is ∼5 × 105 M⊙. A simple test shows only marginal evidence for dynamical mass segregation which if present is most likely not due to dynamical relaxation.
Facultad de Ciencias Astronómicas y Geofísicas - Materia
-
Ciencias Astronómicas
Binaries: spectroscopic
Galaxies: clusters: general
Galaxies: Magellanic Clouds
Stars: early-type
Stars: kinematics - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/84386
Ver los metadatos del registro completo
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The ionising cluster of 30 Doradus : IV. Stellar kinematicsBosch, Guillermo LuisSelman, F.Melnick, J.Terlevich, R.Ciencias AstronómicasBinaries: spectroscopicGalaxies: clusters: generalGalaxies: Magellanic CloudsStars: early-typeStars: kinematicsOn the basis of multislit spectroscopy of 180 stars in the ionising cluster of 30 Doradus we present reliable radial velocities for 55 stars. We calculate a radial velocity dispersion of ∼35 km s<SUP>-1</SUP> for the cluster and we analyse the possible influence of spectroscopic binaries in this rather large velocity dispersion. We use numerical simulations to show that the observations are consistent with the hypothesis that all the stars in the cluster are binaries, and the total mass of the cluster is ∼5 × 10<SUP>5</SUP> M⊙. A simple test shows only marginal evidence for dynamical mass segregation which if present is most likely not due to dynamical relaxation.Facultad de Ciencias Astronómicas y Geofísicas2001info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf137-141http://sedici.unlp.edu.ar/handle/10915/84386enginfo:eu-repo/semantics/altIdentifier/issn/0004-6361info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20011427info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:16:19Zoai:sedici.unlp.edu.ar:10915/84386Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:20.14SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
The ionising cluster of 30 Doradus : IV. Stellar kinematics |
title |
The ionising cluster of 30 Doradus : IV. Stellar kinematics |
spellingShingle |
The ionising cluster of 30 Doradus : IV. Stellar kinematics Bosch, Guillermo Luis Ciencias Astronómicas Binaries: spectroscopic Galaxies: clusters: general Galaxies: Magellanic Clouds Stars: early-type Stars: kinematics |
title_short |
The ionising cluster of 30 Doradus : IV. Stellar kinematics |
title_full |
The ionising cluster of 30 Doradus : IV. Stellar kinematics |
title_fullStr |
The ionising cluster of 30 Doradus : IV. Stellar kinematics |
title_full_unstemmed |
The ionising cluster of 30 Doradus : IV. Stellar kinematics |
title_sort |
The ionising cluster of 30 Doradus : IV. Stellar kinematics |
dc.creator.none.fl_str_mv |
Bosch, Guillermo Luis Selman, F. Melnick, J. Terlevich, R. |
author |
Bosch, Guillermo Luis |
author_facet |
Bosch, Guillermo Luis Selman, F. Melnick, J. Terlevich, R. |
author_role |
author |
author2 |
Selman, F. Melnick, J. Terlevich, R. |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Ciencias Astronómicas Binaries: spectroscopic Galaxies: clusters: general Galaxies: Magellanic Clouds Stars: early-type Stars: kinematics |
topic |
Ciencias Astronómicas Binaries: spectroscopic Galaxies: clusters: general Galaxies: Magellanic Clouds Stars: early-type Stars: kinematics |
dc.description.none.fl_txt_mv |
On the basis of multislit spectroscopy of 180 stars in the ionising cluster of 30 Doradus we present reliable radial velocities for 55 stars. We calculate a radial velocity dispersion of ∼35 km s<SUP>-1</SUP> for the cluster and we analyse the possible influence of spectroscopic binaries in this rather large velocity dispersion. We use numerical simulations to show that the observations are consistent with the hypothesis that all the stars in the cluster are binaries, and the total mass of the cluster is ∼5 × 10<SUP>5</SUP> M⊙. A simple test shows only marginal evidence for dynamical mass segregation which if present is most likely not due to dynamical relaxation. Facultad de Ciencias Astronómicas y Geofísicas |
description |
On the basis of multislit spectroscopy of 180 stars in the ionising cluster of 30 Doradus we present reliable radial velocities for 55 stars. We calculate a radial velocity dispersion of ∼35 km s<SUP>-1</SUP> for the cluster and we analyse the possible influence of spectroscopic binaries in this rather large velocity dispersion. We use numerical simulations to show that the observations are consistent with the hypothesis that all the stars in the cluster are binaries, and the total mass of the cluster is ∼5 × 10<SUP>5</SUP> M⊙. A simple test shows only marginal evidence for dynamical mass segregation which if present is most likely not due to dynamical relaxation. |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo 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://sedici.unlp.edu.ar/handle/10915/84386 |
url |
http://sedici.unlp.edu.ar/handle/10915/84386 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0004-6361 info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20011427 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
dc.format.none.fl_str_mv |
application/pdf 137-141 |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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