The OB associations LH 101 and LH 104 in the HII region N158 of the LMC

Autores
Testor, G.; Niemelä, Virpi Sinikka
Año de publicación
1998
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present photometric and spectroscopic ob- servations of stars in the Large Magellanic Cloud OB as- sociations LH 101 and LH 104, located in the HII region N158, which we have also imaged. From our observations we have constructed upper H R diagrams for these OB associations, which we nd to consist mainly of three pop- ulations, one of 2 6 Myr for the stars inside the northern bubble (LH 104), and two populations in the southern HII region (LH 101), one of 2 Myr and the other one aged 3 6 Myr. We have obtained for LH 101 a normal IMF, with a slope of = 1:29 0.20 whereas for LH 104 the IMF is flatter with a slope of = 1:05 0.12. These IMF slopes are consistent with that of other OB associa- tions in the LMC. Our observations reveal in the region of LH 101 the presence of both unevolved and evolved very massive stars, whose ionizing flux is in excess of that derived from our H images of the HII region. The north- west nebulosity in the region of LH 101 thus appears to be matter bound.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Ciencias Astronómicas
Magellanic Clouds
open clusters and associations: individual: LMC-LH 101, LH 104
stars: early type
stars: Wolf-Rayet
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/123524
Acceder
id SEDICI_57c545db5ef32756792173fd63349094
oai_identifier_str oai:sedici.unlp.edu.ar:10915/123524
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling The OB associations LH 101 and LH 104 in the HII region N158 of the LMCTestor, G.Niemelä, Virpi SinikkaCiencias AstronómicasMagellanic Cloudsopen clusters and associations: individual: LMC-LH 101, LH 104stars: early typestars: Wolf-RayetWe present photometric and spectroscopic ob- servations of stars in the Large Magellanic Cloud OB as- sociations LH 101 and LH 104, located in the HII region N158, which we have also imaged. From our observations we have constructed upper H R diagrams for these OB associations, which we nd to consist mainly of three pop- ulations, one of 2 6 Myr for the stars inside the northern bubble (LH 104), and two populations in the southern HII region (LH 101), one of 2 Myr and the other one aged 3 6 Myr. We have obtained for LH 101 a normal IMF, with a slope of = 1:29 0.20 whereas for LH 104 the IMF is flatter with a slope of = 1:05 0.12. These IMF slopes are consistent with that of other OB associa- tions in the LMC. Our observations reveal in the region of LH 101 the presence of both unevolved and evolved very massive stars, whose ionizing flux is in excess of that derived from our H images of the HII region. The north- west nebulosity in the region of LH 101 thus appears to be matter bound.Facultad de Ciencias Astronómicas y Geofísicas1998-06-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf527-538http://sedici.unlp.edu.ar/handle/10915/123524spainfo:eu-repo/semantics/altIdentifier/issn/0365-0138info:eu-repo/semantics/altIdentifier/issn/1286-4846info:eu-repo/semantics/altIdentifier/doi/10.1051/aas:1998241info: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:UNLP2025-10-22T17:10:10Zoai:sedici.unlp.edu.ar:10915/123524Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:10:10.425SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv The OB associations LH 101 and LH 104 in the HII region N158 of the LMC
title The OB associations LH 101 and LH 104 in the HII region N158 of the LMC
spellingShingle The OB associations LH 101 and LH 104 in the HII region N158 of the LMC
Testor, G.
Ciencias Astronómicas
Magellanic Clouds
open clusters and associations: individual: LMC-LH 101, LH 104
stars: early type
stars: Wolf-Rayet
title_short The OB associations LH 101 and LH 104 in the HII region N158 of the LMC
title_full The OB associations LH 101 and LH 104 in the HII region N158 of the LMC
title_fullStr The OB associations LH 101 and LH 104 in the HII region N158 of the LMC
title_full_unstemmed The OB associations LH 101 and LH 104 in the HII region N158 of the LMC
title_sort The OB associations LH 101 and LH 104 in the HII region N158 of the LMC
dc.creator.none.fl_str_mv Testor, G.
Niemelä, Virpi Sinikka
author Testor, G.
author_facet Testor, G.
Niemelä, Virpi Sinikka
author_role author
author2 Niemelä, Virpi Sinikka
author2_role author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Magellanic Clouds
open clusters and associations: individual: LMC-LH 101, LH 104
stars: early type
stars: Wolf-Rayet
topic Ciencias Astronómicas
Magellanic Clouds
open clusters and associations: individual: LMC-LH 101, LH 104
stars: early type
stars: Wolf-Rayet
dc.description.none.fl_txt_mv We present photometric and spectroscopic ob- servations of stars in the Large Magellanic Cloud OB as- sociations LH 101 and LH 104, located in the HII region N158, which we have also imaged. From our observations we have constructed upper H R diagrams for these OB associations, which we nd to consist mainly of three pop- ulations, one of 2 6 Myr for the stars inside the northern bubble (LH 104), and two populations in the southern HII region (LH 101), one of 2 Myr and the other one aged 3 6 Myr. We have obtained for LH 101 a normal IMF, with a slope of = 1:29 0.20 whereas for LH 104 the IMF is flatter with a slope of = 1:05 0.12. These IMF slopes are consistent with that of other OB associa- tions in the LMC. Our observations reveal in the region of LH 101 the presence of both unevolved and evolved very massive stars, whose ionizing flux is in excess of that derived from our H images of the HII region. The north- west nebulosity in the region of LH 101 thus appears to be matter bound.
Facultad de Ciencias Astronómicas y Geofísicas
description We present photometric and spectroscopic ob- servations of stars in the Large Magellanic Cloud OB as- sociations LH 101 and LH 104, located in the HII region N158, which we have also imaged. From our observations we have constructed upper H R diagrams for these OB associations, which we nd to consist mainly of three pop- ulations, one of 2 6 Myr for the stars inside the northern bubble (LH 104), and two populations in the southern HII region (LH 101), one of 2 Myr and the other one aged 3 6 Myr. We have obtained for LH 101 a normal IMF, with a slope of = 1:29 0.20 whereas for LH 104 the IMF is flatter with a slope of = 1:05 0.12. These IMF slopes are consistent with that of other OB associa- tions in the LMC. Our observations reveal in the region of LH 101 the presence of both unevolved and evolved very massive stars, whose ionizing flux is in excess of that derived from our H images of the HII region. The north- west nebulosity in the region of LH 101 thus appears to be matter bound.
publishDate 1998
dc.date.none.fl_str_mv 1998-06-15
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/10915/123524
url http://sedici.unlp.edu.ar/handle/10915/123524
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0365-0138
info:eu-repo/semantics/altIdentifier/issn/1286-4846
info:eu-repo/semantics/altIdentifier/doi/10.1051/aas:1998241
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
527-538
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 12.982451

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