| Issue |
A&A
Volume 413, Number 1, January I 2004
|
|
|---|---|---|
| Page(s) | 217 - 223 | |
| Section | Interstellar and circumstellar matter | |
| DOI | https://doi.org/10.1051/0004-6361:20031502 | |
| Published online | 17 December 2003 | |
Speckle interferometry of the HAeBe star V376 Cas*
1
Max-Planck-Institut für Radioastronomie (MPIfR), Auf dem Hügel 69, 53121 Bonn, Germany
2
Special Astrophysical Observatory, Nizhnij Arkhyz, Zelenchuk region, Karachai-Cherkesia 357147, Russia
Corresponding author: K. Smith, kester@mpifr-bonn.mpg.de
Received:
11
June
2003
Accepted:
18
September
2003
We report H- and K'-band speckle
interferometric observations of the HAeBe star V376 Cas. Our
observations show that the object is partially resolved. The
visibility curves suggest three separate components: a large
scattering envelope visible only in the H band, a component
approximately 100 mas in radius, and a component with a Gaussian HWHM
of approximately 
mas, corresponding to approximately 5 AU at
600 pc distance, which contributes most of the flux. We compare the
smallest structure to the radius of dust sublimation in the radiation
field of the star and find that the radius is approximately six times
larger than that expected. This may indicate that the inner regions of
the system are in fact obscured by a flaring circumstellar disk or
torus seen close to edge-on.
Key words: stars: circumstellar matter / stars: formation / stars: individual: V376 Cas
© ESO, 2004
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