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.

Crediti:

ESO

A proposito dell'immagine

Identificazione:eso0734b
Tipo:Osservazione
Data di pubblicazione:03 Agosto 2007
Notizie relative:eso0734
Dimensione:2103 x 1010 px

A proposito delll'oggetto

Nome:RY Sagittarii
Tipo:Milky Way : Star : Type : Variable
Distanza:6000 Anni luce
Categoria:Stars

Formati delle immagini

JPEG grande
182,6 KB

Colori e filtri

BandaLunghezza d'ondaTelescopio
Infrarosso
Near-IR
4.0 μmVery Large Telescope
NACO
Infrarosso
Near-IR
2.2 μmVery Large Telescope
NACO