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Una resolución VLBI de la controversia de la distancia de las Pléyades
Carl Melis1, Mark J Reid2, Amy J Mioduszewski3
1University of California, San Diego, Center for Astrophysics and Space Sciences, 9500 Gilman Drive, La Jolla, CA 92093-0424, USA. cmelis@ucsd.edu.
Science (New York, N.Y.)
|August 30, 2014
Resumen
Nuevas mediciones de radioastronomía resuelven la controversia de la distancia de las Pléyades. Este estudio proporciona la distancia más precisa al cúmulo estelar de las Pléyades, apoyando los modelos astrofísicos para estrellas jóvenes.
Área de la Ciencia:
- La astronomía y la astrofísica.
- Física estelar Física estelar es la física estelar.
- La astrometría es la astrometría.
Sus antecedentes:
- El cúmulo abierto de las Pléyades es crucial para comprender las estrellas jóvenes.
- Existe una significativa "controversia de distancia de las Pléyades" entre Hipparcos (120.2 pc) y otras mediciones (133.5 pc).
Objetivo del estudio:
- Para resolver la controversia de la distancia de las Pléyades.
- Para proporcionar una medición precisa y precisa de la distancia al cúmulo de las Pléyades.
Principales métodos:
- Se utilizó interferometría de radio de línea de base muy larga (VLBI) para mediciones de paralaje trigonométrico absoluto.
- Se logra una alta exactitud y precisión en la determinación de distancias.
Principales resultados:
- Se determinó una distancia del cúmulo de las Pléyades de 136.2 ± 1.2 parsecs (pc).
- Este resultado es incompatible con la distancia de la misión Hipparcos de 120.2 pc.
- La nueva medición es la más precisa y precisa hasta la fecha.
Conclusiones:
- La distancia derivada del VLBI resuelve la controversia de la distancia de las Pléyades.
- Los hallazgos apoyan y consolidan los modelos astrofísicos existentes para las estrellas de la era de las Pléyades.
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