First detection of dust clouds around R CrB variable stars

Details First detection of dust clouds around R CrB variable stars First detection of dust clouds around R CrB variable stars

2004-11-26

arxiv.org/abs/astro-ph/0411735v1

Astron.Astrophys. 428 (2004) L13-L16

Astronomy and Astrophysics

Astrophysics

Published in Astronomy and Astrophysics (A&A 428,L13-L16 (2004))

Scientific paper

10.1051/0004-6361:200400095

From VLT/NACO diffraction-limited images of RY~Sgr, we report the first direct detection of heterogeneities in the circumstellar envelope of a R Coronae Borealis variable star. Several bright and very large dust clouds are seen in various directions at several hundred stellar radii from RY Sgr, revealing high activity for the ejection of stellar material by R CrB variables. These observations do support the current interpretation that optically thick dust clouds are formed around the surface of this type of variable stars and, when passing between the star and the observer, produce the huge and sudden declines characterizing these objects in visible light. This is the first direct confirmation of a scenario proposed about 70 years ago.

Affiliated with

Also associated with

No associations

Rating

First detection of dust clouds around R CrB variable stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with First detection of dust clouds around R CrB variable stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and First detection of dust clouds around R CrB variable stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-691431