Far infrared and optical study of the high latitude cloud L1642

Details Far infrared and optical study of the high latitude cloud L1642 Far infrared and optical study of the high latitude cloud L1642

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.260..185l&link_type=abstract

In ESA Proceedings of an ESA Workshop on a Spaceborne Submillimeter Astronomy Mission. A Cornerstone of the ESA Long Term Scienc

Astronomy and Astrophysics

Astronomy

Far Infrared Radiation, Interstellar Chemistry, Interstellar Extinction, Molecular Clouds, Albedo, Brightness Distribution, Infrared Astronomy Satellite

Scientific paper

Optical surface brightnesses and extinction data, and IRAS infrared maps at 60 and 100 microns for the high galactic latitude cloud L1642 are compared. The optical albedo of the grains and the ratio of 100 micron and optical opacities are derived. The albedo does not depend strongly on wavelength; on average the albedo is 0.5 between 3450 and 5500 A. L1642 is detected also at 12 and 25 microns, where the morphology of the brightness distribution supports an explanation in terms of nonequilibrium emission for small grains and/or large aromatic molecules.

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