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Record Details

Record 42 of 17878
Ionized carbon in side-illuminated molecular clouds
External Online Source: doi:10.1086/168605
Author and Affiliation:
Boreiko, R. T.(California Univ., Berkeley, CA, United States)
Betz, A. L.(California Univ., Berkeley, CA, United States)
Zmuidzinas, J.(California, University, Berkeley, United States)
Abstract: The C II fine-structure line has been observed in five sources for which the ionization front/molecular cloud interface is viewed approximately edge-on. The LSR velocity of the C II emission is generally in good agreement with that observed for molecular species such as CO. However, the observed linewidths of 3-14 km/s are typically wider than those of molecular lines and often show rapid spatial variations in the observed regions. The C II brightness temperature are typically equal to or slightly higher than the dust temperature at all locations observed. In the optically thin approximation, C II excitation temperatures are 100 K or more and column densities are 10 to the 18th/sq cm for all sources except M17, which has a more intense and complicated line profile with a larger spatial extent than any other source observed.
Publication Date: Apr 10, 1990
Document ID:
19900043868
(Acquired Nov 28, 1995)
Accession Number: 90A30923
Subject Category: ASTROPHYSICS
Document Type: Journal Article
Publication Information: Astrophysical Journal, Part 1 (ISSN 0004-637X); 353; 181-192
Publisher Information: United States
Contract/Grant/Task Num: NAG2-254
Financial Sponsor: NASA; United States
Organization Source: California Univ.; Berkeley, CA, United States
Description: 12p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: CARBON; ILLUMINATION; INFRARED SPECTRA; IONIZED GASES; MOLECULAR CLOUDS; CARBON MONOXIDE; EMISSION SPECTRA; FINE STRUCTURE; MOLECULAR SPECTRA; NEBULAE; OPTICAL THICKNESS
Imprint And Other Notes: Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 353, April 10, 1990, p. 181-192.
Availability Source: Other Sources
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