Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977natur.269..582t&link_type=abstract
Nature, vol. 269, Oct. 13, 1977, p. 582, 583.
Astronomy and Astrophysics
Astronomy
Abundance, Hydrogen, Interstellar Chemistry, Metals, Adsorption, Depletion, Recombination Reactions, Ultraviolet Astronomy
Scientific paper
Data obtained by the OAO 3 Copernicus ultraviolet satellite have provided information regarding various theories of molecular hydrogen formation in interstellar clouds. It is suggested that the catalytic production of H2 probably occurs in the interstellar medium where the temperatures of metal grains are roughly an order of magnitude hotter than dielectric ones. A study of the depletion of interstellar elements from the gas phase may be able to test this theory. A weak correlation is observed between iron and silicon depletions and H2 abundances, although no relationship is observed between the amounts of carbon and oxygen depleted from the gas phase and the amount of gaseous H2. Such observations are partially substantiated by a study of depletions in high-velocity clouds. It has been shown that a systematic depletion of iron and silicon with gas velocities towards unreddened stars occurs, where the higher the velocity, the lower the amount of depletion.
No associations
LandOfFree
Enhanced metal depletions and interstellar H2 abundances 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 Enhanced metal depletions and interstellar H2 abundances, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enhanced metal depletions and interstellar H2 abundances will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-747011