First Detection of CS/10-9/ in Galactic Star Forming Cores

Details First Detection of CS/10-9/ in Galactic Star Forming Cores First Detection of CS/10-9/ in Galactic Star Forming Cores

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...273l..23h&link_type=abstract

Astronomy and Astrophysics, Vol.273, NO. 1/JUNI, P. L23, 1993

Astronomy and Astrophysics

Astrophysics

21

Ism: Clouds, Stars: Formation

Scientific paper

We report the first measurements of the high-gas density tracing J=10-9 CS and C34S transitions towards 8 galactic star forming cores. With the J=10 level 160 K above ground, and critical densities for excitation of ˜107.8 cm-3, these lines provide unique information about the ultra-dense cloud cores next to the star forming regions which cannot be deduced from less excited levels. Comparison with lower rotational transitions reveals strong excitation gradients across the cores. The high intensity of the submm transitions requires densities ≥ 107 cm-3 if excited by collisions. However, because by selection our sources are closely associated with luminous embedded objects, we also investigate in detail the effect of IR pumping into the v=1 vibrational level on the v=0 rotational population.

Affiliated with

Also associated with

No associations

Rating

First Detection of CS/10-9/ in Galactic Star Forming Cores 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 First Detection of CS/10-9/ in Galactic Star Forming Cores, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and First Detection of CS/10-9/ in Galactic Star Forming Cores will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1732944