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Author
B. Acke
M.E. van den Ancker
C.P. Dullemond
R.J.H.M. van Boekel
L.B.F.M. Waters
Year
2004
Title
Correlation between grain growth and disk geometry in Herbig Ae/Be systems
Journal
Astronomy & Astrophysics
Volume
422
Pages (from-to)
621-626
Document type
Article
Faculty
Faculty of Science (FNWI)
Institute
Anton Pannekoek Institute for Astronomy (API)
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.
URL
go to publisher's site
Link
Link
Language
Undefined/Unknown
Permalink
http://hdl.handle.net/11245/1.228309
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  • 162134y.pdf

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