Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...193.6521l&link_type=abstract
American Astronomical Society, 193rd AAS Meeting, #65.21; Bulletin of the American Astronomical Society, Vol. 31, p.661
Astronomy and Astrophysics
Astronomy
Scientific paper
Solid interstellar matter in the form of dust has been detected in the solar system. We present our findings based on data collected with the dust detectors on-board the Ulysses and Galileo spacecraft. The mass distribution of interstellar dust is also determined by the wavelength dependence extinctio of star light along lines of sight through the diffuse interstellar medium. In a reasonable mass-range the mass distribution of in situ detections is compatible with a dust population governed by grain-grain collisions. Compared to mass distributions determined by fitting the extinction-curve, the in situ detections contain large grains with masses above 10-13 g. The large grains contribute much to the total mass of heavy elements in the interstellar medium surrounding the sun and thus effectively change the elementary composition of this medium.
Frisch Priscilla C.
Grün Eberhard
Landgraf Markus
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