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2008ApJ...685L..35B - Astrophys. J., 685, L35-L38 (2008/September-3)

Tracing high-density gas in M82 and NGC 4038.

BAYET E., LINTOTT C., VITI S., MARTIN-PINTADO J., MARTIN S., WILLIAMS D.A. and RAWLINGS J.M.C.

Abstract (from CDS):

We present the first detection of CS in the Antennae galaxies toward the NGC 4038 nucleus, as well as the first detections of two high-J (5-4 and 7-6) CS lines in the center of M82. The CS(7-6) line in M82 shows a profile that is surprisingly different from those of other low-J CS transitions we observed. This implies the presence of a separate, denser and warmer molecular gas component. The derived physical properties and the likely location of the CS(7-6) emission suggest an association with the supershell in the center of M82.

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Journal keyword(s): Astrochemistry - Galaxies: Individual: Name: Antennae - Galaxies: Individual: Messier Number: M82 - ISM: Molecules - Stars: Formation - Submillimeter

Simbad objects: 8

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