Chemical composition in fast rotators main sequence stars
Using public data of the Ultraviolet and Visual Echelle Spectrograph ParanalObservatory Project (UVES POP) the projected rotational velocities, v sin i, for 16stars in the field of the galactic cluster IC 2391 (o Vel Cluster) were obtained usingthe method of the Fourier transform (FT). We found that...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2008 |
| País: | México |
| Institución: | Universidad Nacional Autónoma de México |
| Repositorio: | Redalyc-UNAM |
| OAI Identifier: | oai:redalyc.org:57144115 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=57144115 |
| Access Level: | acceso abierto |
| Palabra clave: | Física, Astronomía y Matemáticas type stars: early stars: rotation stars: abundances |
| Sumario: | Using public data of the Ultraviolet and Visual Echelle Spectrograph ParanalObservatory Project (UVES POP) the projected rotational velocities, v sin i, for 16stars in the field of the galactic cluster IC 2391 (o Vel Cluster) were obtained usingthe method of the Fourier transform (FT). We found that only 12 of these objectsare cluster members and separating them in two sets (main sequence stars andevolved stars) a correlation of the rotation velocity with the effective temperaturewas found, indicating a nearly equal orientation of the rotation axis for the memberstars. The ratios N/C and O/C obtained for the main sequence stars increase withv sin i and show evidence of mixing induced by rotation. |
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