Clouds around RY Sagittarii

Images of the star RY Sagittarii, member of the class of R Coronae Borealis stars, obtained with the NACO instrument on ESO's Very Large Telescope at two different epochs and at two different wavelengths. The left image was obtained on 24 May 2003 at a wavelength of 2.2 microns, and the right image on 17 September 2003 at 4 microns. Both images reveal strong deformations, the signatures of large clouds in the envelope surrounding the star. This was the first time these clouds were discovered around a R Coronae Borealis star, confirming the Dust Puff theory.

Crédit:

ESO

À propos de l'image

Identification:eso0734b
Type:Observation
Date de publication:3 août 2007
Communiqués de presse en rapport:eso0734
Taille:2103 x 1010 px

À propos de l'objet

Nom:RY Sagittarii
Type:Milky Way : Star : Type : Variable
Distance:6000 années lumière
Catégorie:Stars

Image Formats

Grand JPEG
182,6 Kio

Couleurs & filtres

DomaineLongueur d'ondeTélescope
Infrarouge
Near-IR
4.0 μmVery Large Telescope
NACO
Infrarouge
Near-IR
2.2 μmVery Large Telescope
NACO