Evolución química en la Nube Mayor de Magallanes a partir de fotometría de Washington de cúmulos estelares
From C, T1 Washington photometry in the field of NGC 1697, SL 133, NGC 1997, SL 663, and OHSC 28, five mostly unstudied star clusters in the LMC, we estimate the cluster radii, ages and metallicities. With the exception of NGC 1697 (age = 0.7 Gyr, [Fe/H] = 0.0 dex), the remaining four clusters are o...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2009 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | español |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/20651 |
| Acceso en línea: | http://hdl.handle.net/11336/20651 |
| Access Level: | acceso abierto |
| Palabra clave: | STAR CLUSTERS https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| Sumario: | From C, T1 Washington photometry in the field of NGC 1697, SL 133, NGC 1997, SL 663, and OHSC 28, five mostly unstudied star clusters in the LMC, we estimate the cluster radii, ages and metallicities. With the exception of NGC 1697 (age = 0.7 Gyr, [Fe/H] = 0.0 dex), the remaining four clusters are of intermediate-age (from 2.2 to 3.0 Gyr) and relatively metal-poor ([Fe/H] = -0.7 dex). We combine our sample with 49 clusters with ages and metallicities on a similar scale and examine relationships between position in the LMC, age and metallicity. We confirm previous results that clusters younger than ∼ 1 Gyr were formed during an outside-in process; this occurred after a burst of cluster formation that took place mainly in the outer disk and peaked at ∼ 2 Gyr ago. Finally, the cluster and field AMRs show evidence for a metallicity offset but do overlap, particularly on the upper envelope side of the cluster AMR. |
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