G287.84-0.82: an infrared star cluster in the Carina nebula
We have studied the properties of an infrared cluster embedded in the gas and dust of the southern part of the Carina nebula (NGC 3372), where the probable existence of current star formation has already been predicted. We used mid-infrared (A and C bands) and near-infrared (JHK<SUB>s</SUB&...
Guardado en:
| Autores principales: | , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2004
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/83280 |
| Aporte de: |
| id |
I19-R120-10915-83280 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas Infrared: stars Open clusters and associations: individual: carina nebula Open clusters and associations: individual: G287.84-0.82 Open clusters and associations: individual: NGC 3372 Stars: formation Stars: pre-main-sequence |
| spellingShingle |
Ciencias Astronómicas Infrared: stars Open clusters and associations: individual: carina nebula Open clusters and associations: individual: G287.84-0.82 Open clusters and associations: individual: NGC 3372 Stars: formation Stars: pre-main-sequence Hägele, Guillermo Federico Albacete Colombo, Juan Facundo Barbá, Rodolfo Héctor Bosch, Guillermo Luis G287.84-0.82: an infrared star cluster in the Carina nebula |
| topic_facet |
Ciencias Astronómicas Infrared: stars Open clusters and associations: individual: carina nebula Open clusters and associations: individual: G287.84-0.82 Open clusters and associations: individual: NGC 3372 Stars: formation Stars: pre-main-sequence |
| description |
We have studied the properties of an infrared cluster embedded in the gas and dust of the southern part of the Carina nebula (NGC 3372), where the probable existence of current star formation has already been predicted. We used mid-infrared (A and C bands) and near-infrared (JHK<SUB>s</SUB>) images from the Midcourse Space Experiment and the Two-Micron All-Sky Survey, respectively, combined with an optical Ha narrow-band filter image obtained at the Cerro Tololo Inter-American Observatory. The infrared star cluster has at least 17 members, and its parameters, radius and stellar density are in very good agreement with high- to intermediate-mass star formation scenarios. The detected infrared sources have roughly the same intrinsic infrared excess determined from their position in colour-colour and colour-magnitude diagrams, suggesting that these objects could be related to pre-main-sequence stars of high to intermediate mass. Furthermore, we present a low-dispersion spectrum of the LS 1883 (O9.5V) star located near the centre of the infrared cluster. The position of this object in the colour-colour and colour-magnitude infrared diagrams lies close to the reddening vector of a zero-age main-sequence O9V spectral-type star, and it seems to be the first star of this cluster to emerge. All these facts are consistent with the current star-forming scenarios associated with highly embedded star clusters. |
| format |
Articulo Articulo |
| author |
Hägele, Guillermo Federico Albacete Colombo, Juan Facundo Barbá, Rodolfo Héctor Bosch, Guillermo Luis |
| author_facet |
Hägele, Guillermo Federico Albacete Colombo, Juan Facundo Barbá, Rodolfo Héctor Bosch, Guillermo Luis |
| author_sort |
Hägele, Guillermo Federico |
| title |
G287.84-0.82: an infrared star cluster in the Carina nebula |
| title_short |
G287.84-0.82: an infrared star cluster in the Carina nebula |
| title_full |
G287.84-0.82: an infrared star cluster in the Carina nebula |
| title_fullStr |
G287.84-0.82: an infrared star cluster in the Carina nebula |
| title_full_unstemmed |
G287.84-0.82: an infrared star cluster in the Carina nebula |
| title_sort |
g287.84-0.82: an infrared star cluster in the carina nebula |
| publishDate |
2004 |
| url |
http://sedici.unlp.edu.ar/handle/10915/83280 |
| work_keys_str_mv |
AT hageleguillermofederico g28784082aninfraredstarclusterinthecarinanebula AT albacetecolombojuanfacundo g28784082aninfraredstarclusterinthecarinanebula AT barbarodolfohector g28784082aninfraredstarclusterinthecarinanebula AT boschguillermoluis g28784082aninfraredstarclusterinthecarinanebula |
| bdutipo_str |
Repositorios |
| _version_ |
1764820488462270464 |