Atomic carbon in a dark cloud: TMC-1

Details Atomic carbon in a dark cloud: TMC-1 Atomic carbon in a dark cloud: TMC-1

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...294l..17s&link_type=abstract

Astronomy and Astrophysics 294L, L17-L20 (1995)

Astronomy and Astrophysics

Astrophysics

39

Interstellar Medium: Abundances, Interstellar Medium: Atoms, Interstellar Medium: Clouds, Interstellar Medium: Individual Objects: Tmc-1, Radio Lines: Atomic, Radio Lines: Molecular: Interstellar

Scientific paper

We report the first observations of the ^3^P_1_-^3^P_0_ line of atomic carbon in the dark cloud TMC-1. Additionally, to compare with CO, we observed ^13^CO(2-1), C^18^0(2-1) and C^17^0(2-1). The lines were observed at five positions perpendicular to the molecular ridge close to the cyanopolyyne peak. Optical depth effects render the determination of atomic carbon column densities difficult, so only lower limits of about 10^17^cm^-2^ are reported. However, the widths and shapes of the carbon lines strongly suggest high optical depths, which would be an argument in favor of the existence of atomic carbon deep inside molecular clouds. A comparison of the observed intensities with the intensities predicted by a photochemical model of the cloud shows a reasonably good agreement, giving confidence in our understanding of the physical and chemical processes at the edges of dark clouds.

Affiliated with

Also associated with

No associations

Rating

Atomic carbon in a dark cloud: TMC-1 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 Atomic carbon in a dark cloud: TMC-1, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Atomic carbon in a dark cloud: TMC-1 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1629279