THE LARGE SCALE MOLECULAR ENVIRONMENT TOWARDS WESTERLUND 1
We report the discovery of an out ow and a molecular cavity at the Norma near-arm around the young Super Star Cluster (SSC) Westerlund 1 (Wd1). Association of the SSC Wd1 with the cavity and the molecular out- ow is discussed based on the observed kinematics from CO and HI emission, and also in the...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2009 |
| País: | México |
| Institución: | Instituto Nacional de Astrofísica, Óptica y Electrónica |
| Repositorio: | Redalyc-INAOE |
| OAI Identifier: | oai:redalyc.org:57115687006 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=57115687006 |
| Access Level: | acceso abierto |
| Palabra clave: | Física, Astronomía y Matemáticas ISM: jets and outflows open clusters and associations: individual (Westerlund 1) open clusters and associations: individual (Westerlund 1)ows |
| Sumario: | We report the discovery of an out ow and a molecular cavity at the Norma near-arm around the young Super Star Cluster (SSC) Westerlund 1 (Wd1). Association of the SSC Wd1 with the cavity and the molecular out- ow is discussed based on the observed kinematics from CO and HI emission, and also in the observed HI absorptions. We conclude that the possibility of association of Wd1 with the cavity is high if both are located at a distance of 5.0=0.5Kpc, which is a factor 1.4 farther than the most recent distance estimation to Wd1. The shell surrounding the cavity has a molecular mass of 1 x 106 M and is expanding at a velocity of 8 kms-1. The corresponding kinetic energy of expansion is 1 x 1051 erg. The magnetar associated with Wd1 could be the source of this energy. |
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