Computer Science
Scientific paper
Oct 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992natur.359..399p&link_type=abstract
Nature (ISSN 0028-0836), vol. 359, no. 6394, p. 399-401.
Computer Science
31
Accretion Disks, Early Stars, Optical Thickness, Stellar Envelopes, Stellar Evolution, Stellar Mass, Luminous Intensity, Molecular Clouds, Polarimetry, Star Formation, Stellar Structure
Scientific paper
An optically thick disk around the Herbig Ae/Be object V376 Cassiopeiae has been resolved using imaging polarimetry from the La Palma observatory. Its effective radius increases from 0.8 arcsec in the near-IR to 1.2 arcsec at optical wavelengths because of the higher opacity of the disk material at shorter wavelengths. The corresponding linear disk radius is 500-750 A, about an order of magnitude larger than the solar system. The polarization behavior withn a 0.5 arcsec diameter circle around the companion star V633 Cas suggests the presence of a more compact unresolved disk, possibly a protoplanetary disk, around this star. The presence of circumstellar disks around these two pre-main-sequence stars in the same star-forming cloud suggests that such disks may be common features of early stellar evolution.
Coyne George V.
Piirola Vilppu
Scaltriti Franco
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