Observations of heavy-element recombination lines in the Rho Ophiuchi dark cloud at 13 CM wavelength

Details Observations of heavy-element recombination lines in the Rho Ophiuchi dark cloud at 13 CM wavelength Observations of heavy-element recombination lines in the Rho Ophiuchi dark cloud at 13 CM wavelength

Aug 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975stin...7625120k&link_type=abstract

Unknown

Other

Clouds, Heavy Elements, Line Spectra, Recombination Reactions, Dust, Gas Ionization, Interstellar Space, Radio Waves

Scientific paper

High-sensitivity observations at the carbon 140 alpha and 141 alpha recombination line frequencies in the direction of the Rho Ophiuchi dust cloud show the presence of recombination lines of carbon and sulfur, but not of other heavy elements. These results require: that the elements Si, Fe and Mg are depleted by factors greater than 15, 10 and 2 respectively, most likely into interstellar grains, whereas sulphur is undepleted: and that only approximately 1/6 of the carbon is present in the gas phase in the cloud. From the observed size of the CII region, theta is approximately equal to 3.2 arcmin, together with the observed carbon depletion, the authors infer that the density in the carbon-line-emitting region is n(H) approximately equal to 25,000/cc, and that the size of the SII region is significantly larger than that of CII region. The agreement between the widths of the recombination lines (which arise in a small region of the cloud) and those of the more widely distributed molecular species suggests that the lines in this cloud are broadened by microturbulence on a scale much 0.1 parsecs.

Affiliated with

Also associated with

No associations

Rating

Observations of heavy-element recombination lines in the Rho Ophiuchi dark cloud at 13 CM wavelength does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Observations of heavy-element recombination lines in the Rho Ophiuchi dark cloud at 13 CM wavelength, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observations of heavy-element recombination lines in the Rho Ophiuchi dark cloud at 13 CM wavelength will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1542048