Mathematics – Logic
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...392..284c&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 392, no. 1, June 10, 1992, p. 284-288. Research supported by ASI, CNR, and
Mathematics
Logic
7
Carbonaceous Materials, Cosmic Dust, Extreme Ultraviolet Radiation, Interstellar Extinction, Spectrum Analysis, Amorphous Materials, Chemical Composition, Interstellar Matter
Scientific paper
Results are presented of new systematic spectroscopic analyses performed in the vacuum ultraviolet spectral range (110-300 nm) on amorphous carbon grains produced under different and controlled physical conditions and with two different production methods. The results confirm that particles similar to those obtained in the laboratory might reproduce the extinction observed toward a class of stellar sources characterized by an absorption 'bump' at around 240 nm. The 220 nm interstellar hump is not reproduced by laboratory particles. However, a form of the same carbonaceous grains, partially modified in the chemical, structural, and/or morphological properties, may be used to simulate the interstellar extinction curve.
Blanco Ariel
Bussoletti Ezio
Colangeli Luigi
Fonti Sergio
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