MILLI-ARCSECOND BINARIES
As part of an astrometric program, we have used the Very Long Baseline Array to measure with great accuracy the trigonometric parallax of several young stars in the Taurus and Ophiuchus star-forming regions. Additionally, we have obtained an unprecedented sample of high-resolution (~ 1 mas) images o...
| Autores: | , , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2008 |
| País: | México |
| Recursos: | Universidad Nacional Autónoma de México |
| Repositorio: | Redalyc-UNAM |
| OAI Identifier: | oai:redalyc.org:57116170023 |
| Acesso em linha: | https://www.redalyc.org/articulo.oa?id=57116170023 |
| Access Level: | acceso abierto |
| Palavra-chave: | Física, Astronomía y Matemáticas thermal Astrometry stars: pre main sequence binaries: general |
| Resumo: | As part of an astrometric program, we have used the Very Long Baseline Array to measure with great accuracy the trigonometric parallax of several young stars in the Taurus and Ophiuchus star-forming regions. Additionally, we have obtained an unprecedented sample of high-resolution (~ 1 mas) images of several young stellar systems. These images revealed that about 70% of the stars in our sample are very tight binary stars (with separations of a few mas). Since it is highly unlikely that 70% of all stars are such tight binaries, we argue that selection e ects are at work. |
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