Large and small scale structures of molecular clouds in the taurus perseus complex
Identifieur interne : 000091 ( France/Analysis ); précédent : 000090; suivant : 000092Large and small scale structures of molecular clouds in the taurus perseus complex
Auteurs : E. Falgarone [France] ; L. Puget [France] ; J. Evans [États-Unis] ; R. Federman [États-Unis]Source :
- Lecture Notes in Physics [ 0075-8450 ] ; 1985.
Abstract
Abstract: The gaseous components studied in HI and OH absorption against the extragalactic radiosources 3C123 and 3C111 are found to be the low-density edges of condensations of a few 100 MThe densest part of one of these condensations has a structure similar to that found in other dark clouds −1 it is fragmented into several cores of a few Mo, with an orbital velocity dispersion ≈ 2 kms . In turn, the extended low-density layer, optically thick in CO (2-1), is not a common feature. It depends on the ambient UV field but the dust temperature in the core may control its existence, even more critically: the lower is the dust temperature, the less massive is the core and the more extended is the envelope around it, for a given total mass in a given external pressure.
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DOI: 10.1007/3-540-15991-6_75
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In turn, the extended low-density layer, optically thick in CO (2-1), is not a common feature. It depends on the ambient UV field but the dust temperature in the core may control its existence, even more critically: the lower is the dust temperature, the less massive is the core and the more extended is the envelope around it, for a given total mass in a given external pressure.</div></front></TEI><affiliations><list><country><li>France</li><li>États-Unis</li></country><region><li>Île-de-France</li></region><settlement><li>Meudon Cédex</li><li>Paris</li></settlement></list><tree><country name="France"><region name="Île-de-France"><name sortKey="Falgarone, E" sort="Falgarone, E" uniqKey="Falgarone E" first="E." last="Falgarone">E. Falgarone</name></region><name sortKey="Falgarone, E" sort="Falgarone, E" uniqKey="Falgarone E" first="E." last="Falgarone">E. Falgarone</name><name sortKey="Puget, L" sort="Puget, L" uniqKey="Puget L" first="L." last="Puget">L. 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