Exploring the water and carbon monoxide shell around Betelgeuse with VLTI/AMBER

M. Montargès, P. Kervella, G. Perrin, K. Ohnaka

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

2 Citas (Scopus)

Resumen

We present the results of the analysis of our recent inter-ferometric observations of Betelgeuse, using the AMBER instrument of the VLTI. Using the medium spectral resolution mode (R ∼ 1500) we detected the presence of the water vapour and carbon monoxide (CO) molecules in the H and K bands. We also derived the photo-spheric angular diameter in the continuum. By analysing the depth of the molecular lines and the interferometric visibilities, we derived the column densities of the molecules, as well as the temperature and the size of the corresponding regions in the atmosphere of Betelgeuse (the MOLsphere) using a single shell model around the photosphere. Our results confirm the findings by Perrin et al. (2004) and Ohnaka et al. (2011) that the H 2O and CO molecules are distributed around Betelgeuse in a MOLsphere extending to approximately 1.3 times the star's photospheric radius.

Idioma originalInglés
Título de la publicación alojadaBetelgeuse Workshop 2012 - The Physics of Red Supergiants
Subtítulo de la publicación alojadaRecent Advances and Open Questions
Páginas167-172
Número de páginas6
DOI
EstadoPublicada - 2013
Publicado de forma externa
EventoBetelgeuse Workshop 2012 - The Physics of Red Supergiants: Recent Advances and Open Questions - Paris, Francia
Duración: 26 nov 201229 nov 2012

Serie de la publicación

NombreEAS Publications Series
Volumen60
ISSN (versión impresa)1633-4760
ISSN (versión digital)1638-1963

Conferencia

ConferenciaBetelgeuse Workshop 2012 - The Physics of Red Supergiants: Recent Advances and Open Questions
País/TerritorioFrancia
CiudadParis
Período26/11/1229/11/12

Áreas temáticas de ASJC Scopus

  • Astronomía y astrofísica
  • Ingeniería (todo)
  • Ciencias planetarias y espacial

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