Observations of C-12O/J=2-1/ emission in the Large and Small Magellanic Clouds

Details Observations of C-12O/J=2-1/ emission in the Large and Small Magellanic Clouds Observations of C-12O/J=2-1/ emission in the Large and Small Magellanic Clouds

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...262..100i&link_type=abstract

Astrophysical Journal, Part 1, vol. 262, Nov. 1, 1982, p. 100-109.

Astronomy and Astrophysics

Astrophysics

33

Carbon Monoxide, Hydrogen Clouds, Interstellar Matter, Magellanic Clouds, H Lines

Scientific paper

We have detected 12CO(J = 2-1) emission at three positions in the Large Magellanic Cloud, near the bright H ii regions 30 Doradus, N159, and N160A. N159 is the only object in the LMC from which CO emission was detected before. The CO(2-1) spectra of N159 and N160A show two velocity components at about Vhel = 255 km s-1 and around Vhel = 300 km s-1. Emission at the latter velocity may also be present in 30 Doradus.
Four positions in the LMC and four in the SMC failed to show an unambiguous signal. Nevertheless, some emission may be present at the T*A = 1 K (3 σ) noise level. We conclude that the 30 Doradus sector of the LMC at most is marginally deficient in CO emission, as compared to the Galaxy, whereas the SMC appears to be significantly deficient in CO with respect to both the LMC and the Galaxy.

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