Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000mnras.317l...6s&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 317, Issue 1, pp. L6-L10.
Astronomy and Astrophysics
Astronomy
14
Stars: Individual: Cygnus Ob2 No. 12, Ism: Abundances, Ism: Clouds, Ism: Molecules
Scientific paper
HCO+ has been detected for the first time towards the star Cygnus OB2 No. 12 through emission of the 1-0 rotational transition at 89GHz. The CO(J=2-1) transition has also been observed. The observations are consistent with a model of dense regions embedded in a low-density clump gas. If actually present, the dense component would have an aggregate size L<=1300au, in agreement with estimates of small-scale density fluctuations observed along diffuse lines of sight.
Cecchi-Pestellini Cesare
Codella Claudio
Dalgarno Alexander
Scappini Flavio
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