A 12CO J = 4-->3 High-Velocity Cloud in the Large Magellanic Cloud

Details A 12CO J = 4-->3 High-Velocity Cloud in the Large Magellanic Cloud A 12CO J = 4-->3 High-Velocity Cloud in the Large Magellanic Cloud

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aj....130.1635k&link_type=abstract

The Astronomical Journal, Volume 130, Issue 4, pp. 1635-1639.

Astronomy and Astrophysics

Astronomy

3

Ism: Atoms, Ism: General, Ism: Molecules, Galaxies: Magellanic Clouds

Scientific paper

We present Antarctic Submillimeter Telescope and Remote Observatory observations of 12CO J=4-->3 and 12[C I] emission in the 30 Doradus complex in the Large Magellanic Cloud. We detected strong 12CO J=4-->3 emission toward R140, a multiple system of Wolf-Rayet stars located on the rim of the expanding H II shell surrounding the R136 cluster. We also detected a high-velocity gas component as a separate feature in the 12CO J=4-->3 spectrum. This component probably originates from molecular material accelerated as a result of the combined motion induced by the stellar winds and explosions of supernovae, including several fast-expanding H II shells in the complex. The lower limit on the total kinetic energy of the atomic and molecular gas component is ~2×1051 ergs, suggesting that this comprises only 20% of the total kinetic energy contained in the H II complex structure.

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