Other
Scientific paper
Sep 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop.3580h&link_type=abstract
Spitzer Proposal ID #3580
Other
Scientific paper
Recent studies of crystalline silicate around Herbig Ae/Be stars revealed that Mg-pure olivine (forsterite; Mg2SiO4) is present around these stars. On the other hand, silicate dust composition of T Tauri stars and Vega-like stars are not well constrained so far. We have been making ground-based 10 micron spectroscopic observations of T Tauri stars and Vega-like stars and found possible evidence for compositional evolution of dust around young stars, though verification using crystalline silicate features in longer wavelengths is strongly desired. Here we propose to make SST observations of these stars which show crystalline silicate features in 10 micron band to confirm dust compositional evolution around young stars. We are expecting to establish crystalline silicate dust evolution around young stars and it would provide us a clue to understand what is occuring in the disk to promote such dust compositional evolution.
Fujiyoshi Takuya
Honda Mitsuhiko
Kataza Hirokazu
Miyata Takashi
Okada Yoko
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