Dense cores in dark clouds. IV - HC5N observations

Details Dense cores in dark clouds. IV - HC5N observations Dense cores in dark clouds. IV - HC5N observations

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...270..589b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 270, July 15, 1983, p. 589-604.

Astronomy and Astrophysics

Astrophysics

92

Astronomical Spectroscopy, Cyano Compounds, Line Spectra, Molecular Clouds, Abundance, Acetylene, Chemical Evolution, Emission Spectra, Interstellar Matter, Nebulae

Scientific paper

Detections or possible detections of the J = 9-8 rotational transition of HC5N in 10 new dark cloud sources are reported. All of the strong sources and most of the known sources are in Taurus. In contrast to maps of TMC-1, maps of NH3 and HC5N emission in L1544 and in TMC-1C show no relative shift of peak positions. Column densities of HC5N and (C-18)O are roughly corelated, but N(HC5N) increases faster than N(C-18)O, suggesting that the abundance of HC5N ranges from about 10 to the -10th in the weakest sources to about 10 to the -9th in the strongest sources. Comparison with predictions of chemical models indicates that this abundance variation is unlikely to be due to variations in cloud density, but it may be due to diferences in the degree of chemical evolution from cloud to cloud. If so, TMC-1 is more evolved than L183.

Affiliated with

Also associated with

No associations

Rating

Dense cores in dark clouds. IV - HC5N observations 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 Dense cores in dark clouds. IV - HC5N observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dense cores in dark clouds. IV - HC5N observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1627153