Publications
of the
MPIfR
Optical & Infrared
Interferometry Group
Smith, K.W., Balega, Y.Y., Hofmann, K.-H., Preibisch,
Th., Schertl, D.,
Weigelt, G.
Speckle interferometry of the HAeBe star V376
Cas
Astronomy and Astrophysics 413, 217 (2004)
Abstract.
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 8 +/- 3 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.
You can get this publication ...
