Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...382l..97b&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 382, Dec. 1, 1991, p. L97-L99. Research supported by MPI, CNR, an
Astronomy and Astrophysics
Astrophysics
23
Amorphous Materials, Interstellar Chemistry, Interstellar Extinction, Interstellar Matter, Ultraviolet Spectra, Carbon, Hydrogen, Optical Properties
Scientific paper
The first extinction spectra of carbon grains condensed in a hydrogen atmosphere are presented to simulate the formation of dust particles in hydrogen-rich astrophysical environments. In order to assess the influence of hydrogen during grain formation unambiguously, experiments were performed in hydrogen-poor (Ar) and hydrogen-rich (H2) atmospheres allowing the carbon vapor to condense homogeneously into grains. The experimental data confirm the theoretical predictions on the lack of any feature in the UV spectra of fully hydrogenated amorphous carbon grains and clearly show the relevance of the different atmospheres during the condensation process. The results support the idea that grains observed in the interstellar medium, which show a strong 2175-A feature, have undergone some processing subsequent to their formation.
Blanco Armando
Bussoletti Ezio
Colangelli Luigi
Fonti Sergio
Stephens John R.
No associations
LandOfFree
Hydrogenated amorphous carbon grains and the 2175 A interstellar hump does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Hydrogenated amorphous carbon grains and the 2175 A interstellar hump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrogenated amorphous carbon grains and the 2175 A interstellar hump will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1536671