A multi-transition study of carbon monoxide in the Orion A molecular cloud. II - C(O-18)

Details A multi-transition study of carbon monoxide in the Orion A molecular cloud. II - C(O-18) A multi-transition study of carbon monoxide in the Orion A molecular cloud. II - C(O-18)

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...270..468d&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 270, no. 1-2, p. 468-476.

Astronomy and Astrophysics

Astrophysics

27

Carbon Monoxide, Interstellar Matter, Mixing Ratios, Molecular Clouds, Orion Nebula, H Ii Regions, Radiative Transfer

Scientific paper

We present an analysis of density, temperature, and excitation conditions in a one half square degree region around BN/KL in Orion A using new C(O-l8) J = 1 yields 0 and J = 2 yields 1 data. This paper extends a previous study of Orion A, based on a multitransition analysis of (C-13)O, to the optically thinner C(O-18) species that traces better the dense inner regions of giant molecular clouds. From the C(O-18) maps we identify several condensations and are able to derive their size, linewidth, average density, mass, and virial mass.

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