Title: SWS observations of young main-sequence stars with dusty circumstellar disks
Authors: Waelkens, Christoffel ×
Waters, Laurentius
deGraauw, MS
Huygen, Eric
Malfait, Koen
Plets, H
Vandenbussche, Bart
Beintema, DA
Boxhoorn, DR
Habing, HJ
Heras, AM
Kester, DJM
Lahuis, F
Morris, PW
Roelfsema, PR
Salama, A
Siebenmorgen, R
Trams, NR
vanderBliek, NR
Valentijn, EA
Wesselius, PR #
Issue Date: Nov-1996
Publisher: Springer verlag
Series Title: Astronomy and astrophysics vol:315 issue:2 pages:L245-L248
Abstract: We present SWS full-scan observations of three objects that are thought to be in a stage of evolution between the youngest, embedded, Herbig Ae/Be stars and Beta Pictoris, a young main-sequence star with a circumstellar disk. The 8-12 mu m spectra of all three stars cannot be understood in terms of purely amorphous silicates, but require the presence of crystalline silicates in different amounts. Around two objects both oxygen-rich and carbon-rich dust particles are present: the spectrum of HD 100546 displays the full set of UIR features; in the spectrum of HD 142527 both the 3.29 and 3.42 mu m emission features are observed, as well as a strong 3.51 mu m feature. The spectrum of HD 100546 is extremely rich in silicate features in the spectral range from 20 to 45 mu m; some of these features strongly suggest the presence of appreciable amounts of crystalline silicates.
ISSN: 0004-6361
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Institute of Astronomy
× corresponding author
# (joint) last author

Files in This Item:

There are no files associated with this item.

Request a copy


All items in Lirias are protected by copyright, with all rights reserved.

© Web of science