Interstellar molecule formation in grain mantles - The laboratory analog experiments, results and implications

Details Interstellar molecule formation in grain mantles - The laboratory analog experiments, results and implications Interstellar molecule formation in grain mantles - The laboratory analog experiments, results and implications

Sep 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979ap%26ss..65..215h&link_type=abstract

(Lunar and Planetary Institute, Workshop on Thermodynamics and Kinetics of Dust Formation in the Space Medium, Houston, Tex., Se

Astronomy and Astrophysics

Astrophysics

80

Cosmic Dust, Infrared Spectra, Interstellar Chemistry, Interstellar Matter, Photolysis, Absorption Spectra, Far Ultraviolet Radiation, Low Temperature, Ultraviolet Absorption, Ultraviolet Spectra

Scientific paper

Studies of the effects of ultraviolet photolysis of interstellar grain mantles which consist of combinations of hydrogen, oxygen, carbon, and nitrogen, ('dirty ice'), are presented. It is shown that photolysis processes of interstellar grains are important during most of their lifetime. A laboratory designed for astrophysical situations involving interstellar grains provides observations of the infrared absorption spectra of photolyzed samples of ices to follow the evolution of grain analogs. The evolution of a grain and its role as a source and sink of molecules is pictured as a statistical process within dense clouds, and the accretion on and photolysis of an individual grain provides the stored chemical energy the release of which produces the impulsive heating needed to eject or evaporate a portion of the grain mantle. A complex refractory substance with the infrared signatures of amino and carboxylic acid groups was produced; the shape and position of the astronomically observed 3.1 micron band was duplicated in the laboratory and was shown to be a natural consequence of the processing of grain mantles.

Affiliated with

Also associated with

No associations

Rating

Interstellar molecule formation in grain mantles - The laboratory analog experiments, results and implications 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 Interstellar molecule formation in grain mantles - The laboratory analog experiments, results and implications, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interstellar molecule formation in grain mantles - The laboratory analog experiments, results and implications will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1817744