Observational Evidence for Grain Growth |
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Authors: | Gwendolyn Meeus |
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Institution: | (1) Universidad Autonoma de Madrid (UAM), Dpt. Fisica Teorica, Campus Cantoblanco, 28049 Madrid, Spain |
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Abstract: | Discs around young stars are the sites of planet formation. The first step in this process is the growth of submicron grains
to larger sized grains. I will review evidence for dust growth in CS discs, based on ISO and Spitzer infrared spectroscopic observations. Intermediate-mass stars, solar-type stars and even brown dwarfs will be discussed in
the context of dust evolution. Furthermore, I will compare objects of several star-forming regions of different ages, and
discuss the influence of the stellar parameters and environment on dust evolution, as witnessed by the observed dust characteristics.
The main focus lies on what one can learn from 10 micron spectroscopy, the region where most astronomical dust species have
important spectral features. |
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Keywords: | |
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