LYNGÅ 1, a small open cluster containing a red-supergiant member
We present CCD <i>UBVRI</i> (Cousins system) photometric observations complemented with spectroscopic and polarimetric observations that were carried out in the open cluster Lyngå 1. Our data indicate that the cluster reddening is E<sub>B−V</sub> = 0.45 ± 0.03, the ratio A<...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2003 |
| País: | Argentina |
| Institución: | Universidad Nacional de La Plata |
| Repositorio: | SEDICI (UNLP) |
| Idioma: | inglés |
| OAI Identifier: | oai:sedici.unlp.edu.ar:10915/93857 |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/93857 |
| Access Level: | acceso abierto |
| Palabra clave: | Astronomía open clusters and associations: individual (lLyngå 1) stars: mass function, spectral classification stars: polarization |
| Sumario: | We present CCD <i>UBVRI</i> (Cousins system) photometric observations complemented with spectroscopic and polarimetric observations that were carried out in the open cluster Lyngå 1. Our data indicate that the cluster reddening is E<sub>B−V</sub> = 0.45 ± 0.03, the ratio A<sub>V</sub>/E<sub>B−V</sub> = R suggests that the extinction law may be slightly anomalous (R ≈ 3.5) and that the cluster distance modulus is V<sub>0</sub> − M<sub>V</sub> = 11.40 ± 0.2. The age of Lyngå 1 is bet ween 100 and 125 Myr according to a fitting of theoretical iso chrones, and the slope of its mass spectrum is x ≈ 1.7. The brightest red star in the field is a cluster member of spectral type K2 II–Ib. |
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