CCD Washington photometry of the moderately metal-poor open cluster NGC 2236
CCD CT1 Washington photometry in the field of the open cluster NGC 2236 is presented, together with photoelectric CMT1T2 photometry of 13 red giant candidates. Based on the best fits of isochrones computed for Z = 0.008 to the (T1,C-T1) diagram, we derive reddening, distance and age. A metal abundan...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2008 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | español |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/20985 |
| Acceso en línea: | http://hdl.handle.net/11336/20985 |
| Access Level: | acceso abierto |
| Palabra clave: | Cúmulo https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| Sumario: | CCD CT1 Washington photometry in the field of the open cluster NGC 2236 is presented, together with photoelectric CMT1T2 photometry of 13 red giant candidates. Based on the best fits of isochrones computed for Z = 0.008 to the (T1,C-T1) diagram, we derive reddening, distance and age. A metal abundance [Fe/H] = -0.3 ± 0.2 is estimated from five independent abundance indices. We also derive a cluster core radius of rc = 1.2 pc and an annular cluster corona of ∆rc = 2.2 pc. The properties of a sample of 20 known open clusters aligned along the line-of-sight to NGC 2236 are examined. |
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