Title: Correlation between grain growth and disk geometry in Herbig Ae/Be systems
Authors: Acke, Bram ×
van den Ancker, ME
Dullemond, CP
van Boekel, R
Waters, Laurentius #
Issue Date: Aug-2004
Publisher: E d p sciences
Series Title: Astronomy & astrophysics vol:422 issue:2 pages:621-626
Abstract: We have calculated the (sub-)mm spectral indices of 26 Herbig Ae/Be stars, for which we can determine the infrared spectral energy distribution (SED). We find a clear correlation between the strength of the ratio of the near- to mid-infrared excess of these sources, and the slope of the (sub-)mm energy distribution. Based on earlier multi-dimensional modeling of disks around Herbig Ae stars, we interpret this as a correlation between the geometry of the disk (flared or self-shadowed) and the size of the grains: self-shadowed disks have, on average, larger grains than their flared counterparts. These data suggest that the geometry of a young stellar disk evolves from flared to self-shadowed.
ISSN: 0004-6361
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Institute of Astronomy
× corresponding author
# (joint) last author

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