The smoothness of CO line profiles in Orion - Implications for clumpiness

Details The smoothness of CO line profiles in Orion - Implications for clumpiness The smoothness of CO line profiles in Orion - Implications for clumpiness

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...375..635t&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 375, July 10, 1991, p. 635-641.

Astronomy and Astrophysics

Astrophysics

44

Carbon Monoxide, Emission Spectra, Interstellar Matter, Line Shape, Orion Nebula, Astronomical Spectroscopy, Molecular Clouds

Scientific paper

Spectra with very high SNR and spectral resolution of the (C-12)O and (C-13)O J = 1 - 0 transitions toward several positions in the Orion region have been obtained. These observations test the extent to which the clumpy structure of this region is refelcted in the velocity structure of the spectra. The smoothness of the profiles is such that if the cloud is assumed to have a constant clump volume filling factor, an unrealistically large number of clumps is necessary to reproduce the observations. A volume filling factor which increases from a small value at the surface to a large value at the core may be more appropriate for this source.

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