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Artigo Acesso aberto Produção Nacional Revisado por pares
BIBTEX RIS

A snapshot of the inner dusty regions of a R CrB-type variable

2007; EDP Sciences; Volume: 466; Issue: 2 Linguagem: Inglês

10.1051/0004-6361

ISSN

1432-0746

Autores

I. C. Leão, P. de Laverny, O. Chesneau, D. Mékarnia, J. R. De Medeiros,

Tópico(s)

Adaptive optics and wavefront sensing

Resumo

Context.R Coronae Borealis (R CrB) variable stars are suspected to sporadically eject optically thick dust clouds causing, when one of them lies on the line-of-sight, a huge brightness decline in visible light. Direct detections with 8-m class adaptive optics of such clouds located at about 0.2–0.3 arcsec from the center (~1000 stellar radii) were recently reported for RY Sgr, the brightest R CrB of the southern hemisphere.

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