Young and very young stars in NGC 3372, the Carina nebula

Autores
Tapia, M.; Roth, M.; Vázquez, Rubén Ángel; Persi, P.
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Results are presented of a large-scale imaging photometric study of the stellar population in the northern part of NGC 3372 with a w avelength co verage from 0.33 to 2.5 µm. All observations were made at Las Campanas Observatory . The sizes of the three stellar clusters, Tr 14, Tr 15 and Tr 16, were determined b y means of star counts. Two-colour and colour-magnitude diagrams are presented and analyzed for eac h individual cluster. The three clusters were found to b e at a similar distance from the Sun, < d > = 2.7 kpc, but with very large scatter in both AV and d. suggesting drastic variations in intracluster dust densit y . Dust particle size distribution variations are eviden t resulting in wide variations in extinction law. We determined ages bet ween 3 and 60 million years for Tr 15 and bet ween less than 1 and 6 million years for Tr 14 and Tr 16. The Tr 14 cluster is partially em bedded in a dense molecular cloud that extends to wards the south west reaching its highest densit y some three arcmin from the cluster nucleus. The ric h UV field created b y the Tr14 stars ionizes most of the visible HII region in its vicinit y and most of the radio HII region Car I. Deep J H K images of the Car I region reveal the presence of a young, em bedded stellar population that includes several O9–B0 stars and an ultracompact HII region.
Se presentan los resultados de un estudio fotométrico de la población estelar en el norte de NGC 3372 en un intervalo espectral que cubre 0.33 a 2.5 µm. Las observaciones se llevaron a cabo en el Observatorio de Las Campanas. Se determinaron los tamaños de los tres cúmulos, Tr 14, Tr 15 y Tr 16, por medio de conteo de estrellas. Diagramas color-color y color-magnitud sugieren edades entre 3 y 60 millones de años para Tr 15 y entre menos de 1 y 6 millones de años para Tr 14 y Tr 16. Los tres cúmulos se encuentran a la misma distancia: < d > = 2.7 kpc aunque con gran dispersión real en AV y en d. Tr 14 es un cúmulo que se encuentra parcialmente inmerso en una nube molecular densa que se extiende hacia el sureste, teniendo su máxima densidad a unos tres minutos de arco del núcleo del cúmulo. Casi todo el gas de la región HII es ionizado por las estrellas de Tr 14. Sin embargo, imágenes en J H K profundas revelan la presencia de una jo ven población de estrellas O y B inmersas en la nube, en donde se encuentra también una región HII ultracompacta.
Instituto de Astrofísica de La Plata
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Astronomía
Galaxy: open clusters and associations: general
HII regions
ISM: individual: NGC 3372
stars: formation
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:10915/93707

id SEDICI_300530790660eb3ef460ff64f1ee5a4f
oai_identifier_str oai:sedici.unlp.edu.ar:10915/93707
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Young and very young stars in NGC 3372, the Carina nebulaTapia, M.Roth, M.Vázquez, Rubén ÁngelPersi, P.AstronomíaGalaxy: open clusters and associations: generalHII regionsISM: individual: NGC 3372stars: formationResults are presented of a large-scale imaging photometric study of the stellar population in the northern part of NGC 3372 with a w avelength co verage from 0.33 to 2.5 µm. All observations were made at Las Campanas Observatory . The sizes of the three stellar clusters, Tr 14, Tr 15 and Tr 16, were determined b y means of star counts. Two-colour and colour-magnitude diagrams are presented and analyzed for eac h individual cluster. The three clusters were found to b e at a similar distance from the Sun, < d > = 2.7 kpc, but with very large scatter in both A<sub>V</sub> and d. suggesting drastic variations in intracluster dust densit y . Dust particle size distribution variations are eviden t resulting in wide variations in extinction law. We determined ages bet ween 3 and 60 million years for Tr 15 and bet ween less than 1 and 6 million years for Tr 14 and Tr 16. The Tr 14 cluster is partially em bedded in a dense molecular cloud that extends to wards the south west reaching its highest densit y some three arcmin from the cluster nucleus. The ric h UV field created b y the Tr14 stars ionizes most of the visible HII region in its vicinit y and most of the radio HII region Car I. Deep J H K images of the Car I region reveal the presence of a young, em bedded stellar population that includes several O9–B0 stars and an ultracompact HII region.Se presentan los resultados de un estudio fotométrico de la población estelar en el norte de NGC 3372 en un intervalo espectral que cubre 0.33 a 2.5 µm. Las observaciones se llevaron a cabo en el Observatorio de Las Campanas. Se determinaron los tamaños de los tres cúmulos, Tr 14, Tr 15 y Tr 16, por medio de conteo de estrellas. Diagramas color-color y color-magnitud sugieren edades entre 3 y 60 millones de años para Tr 15 y entre menos de 1 y 6 millones de años para Tr 14 y Tr 16. Los tres cúmulos se encuentran a la misma distancia: < d > = 2.7 kpc aunque con gran dispersión real en A<sub>V</sub> y en d. Tr 14 es un cúmulo que se encuentra parcialmente inmerso en una nube molecular densa que se extiende hacia el sureste, teniendo su máxima densidad a unos tres minutos de arco del núcleo del cúmulo. Casi todo el gas de la región HII es ionizado por las estrellas de Tr 14. Sin embargo, imágenes en J H K profundas revelan la presencia de una jo ven población de estrellas O y B inmersas en la nube, en donde se encuentra también una región HII ultracompacta.Instituto de Astrofísica de La PlataFacultad de Ciencias Astronómicas y Geofísicas2004-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf73-76http://sedici.unlp.edu.ar/handle/10915/93707enginfo:eu-repo/semantics/altIdentifier/url/http://www.astroscu.unam.mx/rmaa/RMxAC..22/PDF/RMxAC..22_mtapia.pdfinfo:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/handle/11336/37040info:eu-repo/semantics/altIdentifier/issn/0185-1101info:eu-repo/semantics/altIdentifier/hdl/11336/37040info: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:UNLP2025-09-29T11:19:26Zoai:sedici.unlp.edu.ar:10915/93707Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:19:26.963SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Young and very young stars in NGC 3372, the Carina nebula
title Young and very young stars in NGC 3372, the Carina nebula
spellingShingle Young and very young stars in NGC 3372, the Carina nebula
Tapia, M.
Astronomía
Galaxy: open clusters and associations: general
HII regions
ISM: individual: NGC 3372
stars: formation
title_short Young and very young stars in NGC 3372, the Carina nebula
title_full Young and very young stars in NGC 3372, the Carina nebula
title_fullStr Young and very young stars in NGC 3372, the Carina nebula
title_full_unstemmed Young and very young stars in NGC 3372, the Carina nebula
title_sort Young and very young stars in NGC 3372, the Carina nebula
dc.creator.none.fl_str_mv Tapia, M.
Roth, M.
Vázquez, Rubén Ángel
Persi, P.
author Tapia, M.
author_facet Tapia, M.
Roth, M.
Vázquez, Rubén Ángel
Persi, P.
author_role author
author2 Roth, M.
Vázquez, Rubén Ángel
Persi, P.
author2_role author
author
author
dc.subject.none.fl_str_mv Astronomía
Galaxy: open clusters and associations: general
HII regions
ISM: individual: NGC 3372
stars: formation
topic Astronomía
Galaxy: open clusters and associations: general
HII regions
ISM: individual: NGC 3372
stars: formation
dc.description.none.fl_txt_mv Results are presented of a large-scale imaging photometric study of the stellar population in the northern part of NGC 3372 with a w avelength co verage from 0.33 to 2.5 µm. All observations were made at Las Campanas Observatory . The sizes of the three stellar clusters, Tr 14, Tr 15 and Tr 16, were determined b y means of star counts. Two-colour and colour-magnitude diagrams are presented and analyzed for eac h individual cluster. The three clusters were found to b e at a similar distance from the Sun, < d > = 2.7 kpc, but with very large scatter in both A<sub>V</sub> and d. suggesting drastic variations in intracluster dust densit y . Dust particle size distribution variations are eviden t resulting in wide variations in extinction law. We determined ages bet ween 3 and 60 million years for Tr 15 and bet ween less than 1 and 6 million years for Tr 14 and Tr 16. The Tr 14 cluster is partially em bedded in a dense molecular cloud that extends to wards the south west reaching its highest densit y some three arcmin from the cluster nucleus. The ric h UV field created b y the Tr14 stars ionizes most of the visible HII region in its vicinit y and most of the radio HII region Car I. Deep J H K images of the Car I region reveal the presence of a young, em bedded stellar population that includes several O9–B0 stars and an ultracompact HII region.
Se presentan los resultados de un estudio fotométrico de la población estelar en el norte de NGC 3372 en un intervalo espectral que cubre 0.33 a 2.5 µm. Las observaciones se llevaron a cabo en el Observatorio de Las Campanas. Se determinaron los tamaños de los tres cúmulos, Tr 14, Tr 15 y Tr 16, por medio de conteo de estrellas. Diagramas color-color y color-magnitud sugieren edades entre 3 y 60 millones de años para Tr 15 y entre menos de 1 y 6 millones de años para Tr 14 y Tr 16. Los tres cúmulos se encuentran a la misma distancia: < d > = 2.7 kpc aunque con gran dispersión real en A<sub>V</sub> y en d. Tr 14 es un cúmulo que se encuentra parcialmente inmerso en una nube molecular densa que se extiende hacia el sureste, teniendo su máxima densidad a unos tres minutos de arco del núcleo del cúmulo. Casi todo el gas de la región HII es ionizado por las estrellas de Tr 14. Sin embargo, imágenes en J H K profundas revelan la presencia de una jo ven población de estrellas O y B inmersas en la nube, en donde se encuentra también una región HII ultracompacta.
Instituto de Astrofísica de La Plata
Facultad de Ciencias Astronómicas y Geofísicas
description Results are presented of a large-scale imaging photometric study of the stellar population in the northern part of NGC 3372 with a w avelength co verage from 0.33 to 2.5 µm. All observations were made at Las Campanas Observatory . The sizes of the three stellar clusters, Tr 14, Tr 15 and Tr 16, were determined b y means of star counts. Two-colour and colour-magnitude diagrams are presented and analyzed for eac h individual cluster. The three clusters were found to b e at a similar distance from the Sun, < d > = 2.7 kpc, but with very large scatter in both A<sub>V</sub> and d. suggesting drastic variations in intracluster dust densit y . Dust particle size distribution variations are eviden t resulting in wide variations in extinction law. We determined ages bet ween 3 and 60 million years for Tr 15 and bet ween less than 1 and 6 million years for Tr 14 and Tr 16. The Tr 14 cluster is partially em bedded in a dense molecular cloud that extends to wards the south west reaching its highest densit y some three arcmin from the cluster nucleus. The ric h UV field created b y the Tr14 stars ionizes most of the visible HII region in its vicinit y and most of the radio HII region Car I. Deep J H K images of the Car I region reveal the presence of a young, em bedded stellar population that includes several O9–B0 stars and an ultracompact HII region.
publishDate 2004
dc.date.none.fl_str_mv 2004-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/93707
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dc.language.none.fl_str_mv eng
language eng
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info:eu-repo/semantics/altIdentifier/issn/0185-1101
info:eu-repo/semantics/altIdentifier/hdl/11336/37040
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
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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
73-76
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instname:Universidad Nacional de La Plata
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reponame_str SEDICI (UNLP)
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instname_str Universidad Nacional de La Plata
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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