Large scale distribution of the (CII) fine structure line in the galaxy - ISAS/UA galactic plane survey by balloon

Details Large scale distribution of the (CII) fine structure line in the galaxy - ISAS/UA galactic plane survey by balloon Large scale distribution of the (CII) fine structure line in the galaxy - ISAS/UA galactic plane survey by balloon

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993adspr..13..443o&link_type=abstract

Advances in Space Research (ISSN 0273-1177), vol. 13, no. 12, p. (12)443-(12)451

Astronomy and Astrophysics

Astronomy

Carbon, Carbon Monoxide, H Ii Regions, Infrared Astronomy, Infrared Spectra, Milky Way Galaxy, Molecular Clouds, Ultraviolet Radiation, B Stars, Balloon-Borne Instruments, Fabry-Perot Spectrometers, Infrared Telescopes, Ionization, O Stars, Photodissociation

Scientific paper

An extensive survey of (CII) line emission has been made by using balloon borne telescopes incorporated with a liquid helium cooled Fabry-Perot spectrometer. The observations cover a major part of the galactic plane in the first and fourth quadrants as well as some typical HII region molecular cloud complexes and a dark cloud. The observed (CII) emission is very strong and ubiquitously distributed throughout the galactic plane. The emission should be generated mostly in photo-dissociation region (PDR), but the ionizing and heating UV sources should be well mixed with the molecular clouds, presumably due to the clumpy or filamentary structure of the molecular clouds. Some part of the emission may originate from ELD HII regions, which are illuminated by isolated O- and B-stars rather uniformly-distributed in interstellar space.

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