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.

Credit:

ESO

Over de afbeelding

Id:eso0734b
Type:Observatie
Publicatiedatum:3 augustus 2007
Gerelateerde berichten:eso0734
Grootte:2103 x 1010 px

Over het object

Naam:RY Sagittarii
Type:Milky Way : Star : Type : Variable
Afstand:6000 lichtjaren
Categorie:Stars

Afbeeldingstypen

Grote JPEG
182,6 KB

Kleuren & filters

BandGolflengteTelescoop
Infrarood
Near-IR
4.0 μmVery Large Telescope
NACO
Infrarood
Near-IR
2.2 μmVery Large Telescope
NACO