Interferometric observations of the Mira star o Ceti with the VLTI/VINCI instrument in the near-infrared

T. Driebe, H. C. Woodruff, M. Eberhardt, K. H. Hofmann, K. Ohnaka, A. Richichi, D. Schertl, M. Schöller, M. Scholz, G. Weigelt, M. Wittkowski, P. R. Wood

Resultado de la investigación: Contribución a los tipos de informe/libroContribución a la conferenciarevisión exhaustiva

Resumen

We present K-band commissioning observations of the Mira star prototype o Cet obtained at the ESO Very Large Telescope Interferometer (VLTI) with the VINCI instrument and two siderostats mounted to the VLTI stations EO and GO, forming an unprojected baseline length of 16 m. Rosseland angular radii were derived from the measured visibilities by fitting theoretical visibility functions obtained from center-to-limb intensity variations (CLVs) of different Mira star models, and the phase dependence of the visibility function and the apparent diameter have been investigated. Comparison of the derived Rosseland radii, effective temperatures, and the shape of the observed visibility functions with model predictions suggests that o Cet is a fundamental mode pulsator.

Idioma originalInglés
Título de la publicación alojadaThe Power of Optical/IR Interferometry
Subtítulo de la publicación alojadaRecent Scientific Results and 2nd Generation Instrumentation: Proceedings of the ESO Workshop held in Garching, Germany, 4-8 April 2005
EditoresAndrea Richichi, Francoise Delplancke, Francesco Paresce, Alain Chelli
Páginas503-504
Número de páginas2
DOI
EstadoPublicada - 2008
Publicado de forma externa

Serie de la publicación

NombreESO Astrophysics Symposia
Volumen2008
ISSN (versión impresa)1431-2433
ISSN (versión digital)1611-6143

Áreas temáticas de ASJC Scopus

  • Astronomía y astrofísica
  • Física y astronomía (miscelánea)

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