Formaldehyde in Rho Ophiuchi. II

Details Formaldehyde in Rho Ophiuchi. II Formaldehyde in Rho Ophiuchi. II

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.190..487j&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 190, Feb. 1980, p. 487-495.

Astronomy and Astrophysics

Astronomy

3

Astronomical Spectroscopy, Formaldehyde, Interstellar Gas, Nebulae, Centimeter Waves, Gravitational Collapse, Optical Thickness, Spectral Line Width

Scientific paper

The excitation temperatures and optical depths at the center of the cloud for the first four levels of ortho-formaldehyde have been derived from observations to within a narrow range. The linewidths of the 6-cm transition have been considered as a function of distance from the cloud center. While there is a tendency for linewidths to decrease as one moves outwards, there is a lot of scatter in the points, and it is not possible to decide uniquely in favor of either collapse or turbulence.

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