Carbonaceous Grain Processing in Space and in the Laboratory

Details Carbonaceous Grain Processing in Space and in the Laboratory Carbonaceous Grain Processing in Space and in the Laboratory

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999adspr..24..439m&link_type=abstract

Advances in Space Research, Volume 24, Issue 4, p. 439-442.

Physics

2

Scientific paper

Laboratory simulations of carbonaceous grain processing which occurs in space are fundamental to outline an evolutionary pathway for these particles. We consider the UV spectral changes induced in hydrogenated carbon grains by thermal annealing, UV irradiation and ion bombardment. The results give the opportunity to interpret observations in different space environments. In particular, modelling of the optical properties, based on a description of the electronic structure of carbons, indicates small hydrogenated amorphous carbon grains, with different degrees of UV irradiation, as the carrier of the ubiquitous UV interstellar extinction bump

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