Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010pdac.book...27g&link_type=abstract
Protoplanetary Dust: Astrophysical and Cosmochemical Perspectives, eds.: D. Apai, D. S. Lauretta, 2010, Cambridge University Pre
Astronomy and Astrophysics
Astrophysics
Dust, Interstellar Medium, Novae, Supernovae, Planetary Nebulae, Accretion Disk, Condensation, Outflow, Pre-Solar Grain, Meteorites
Scientific paper
Dust is an important constituent in the Universe. About 1% of the mass of the interstellar matter is in dust. This dust is either stardust that condensed in the winds of evolved stars and in the ejecta of supernova and nova explosions or dust that formed in dense interstellar clouds. Here, we will discuss the cycle of matter from stars to the interstellar medium and how interstellar clouds evolve to protostars and protostellar disks. We will discuss the nature and origin of interstellar dust and how it entered the Solar System. A small fraction of the stardust grains survived the earliest stages of Solar System formation and can be recognized by highly anomalous isotopic compositions as pre-solar grains in meteorites, interplanetary dust particles, and cometary matter, with concentrations at the sub-permil level. Imprints of likely interstellar chemistry are seen as D and 15N enrichments in organic matter in primitive Solar System materials.
Gail Hans-Peter
Hoppe Peter
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