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arxiv: 0808.2815 · v1 · submitted 2008-08-20 · 🌌 astro-ph

Tracing high density gas in M 82 and NGC 4038

E. Bayet , C. Lintott , S. Viti , J. Mart\'in-Pintado , S. Mart\'in , D.A. Williams , J.M.C. Rawlings This is my paper
classification 🌌 astro-ph
keywords firstantennaeassociationcentercentrecomponentdenserdensity
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We present the first detection of CS in the Antennae galaxies towards 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 M 82. The CS(7-6) line in M 82 shows a profile that is surprisingly different to 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 suggests an association with the supershell in the centre of M 82.

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