Observational Evidence for Grain Growth

Details Observational Evidence for Grain Growth Observational Evidence for Grain Growth

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011em%26p..108...45m&link_type=abstract

Earth, Moon, and Planets, Volume 108, Issue 1, pp.45-50

Astronomy and Astrophysics

Astronomy

Stars Formation, Planet Formation, Circumstellar Discs, Infrared

Scientific paper

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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