Exploring the water and carbon monoxide shell around Betelgeuse with VLTI/AMBER - Université Pierre et Marie Curie Accéder directement au contenu
Communication Dans Un Congrès EAS Publications Series Année : 2013

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

Résumé

We present the results of the analysis of our recent interferometric observations of Betelgeuse, using the AMBER instrument of the VLTI. Using the medium spectral resolution mode ($R \sim 1500$) we detected the presence of the water vapour and carbon monoxide (CO) molecules in the H and K bands. We also derived the photospheric 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 \etal\ (\cite{Perrin2004}) and Ohnaka \etal\ (\cite{Ohnaka2011}) that the H$_2$O and CO molecules are distributed around Betelgeuse in a MOLsphere extending to approximately 1.3 times the star's photospheric radius.
Fichier principal
Vignette du fichier
montarges.pdf (822.53 Ko) Télécharger le fichier
Poster_BetelgeuseWorkshop_MMONTARGES.pdf (985.46 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Format : Autre

Dates et versions

hal-00826849 , version 1 (28-05-2013)

Identifiants

Citer

Miguel Montargès, Pierre Kervella, Guy Perrin, Keiichi Ohnaka. Exploring the water and carbon monoxide shell around Betelgeuse with VLTI/AMBER. Betelgeuse Workshop 2012 The Physics of Red Supergiants: Recent Advances and Open Questions, Nov 2012, Paris, France. pp.167, ⟨10.1051/eas/1360019⟩. ⟨hal-00826849⟩
133 Consultations
199 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More