Dense and diffuse H2 in star-forming galaxies

Details Dense and diffuse H2 in star-forming galaxies Dense and diffuse H2 in star-forming galaxies

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sptz.prop40079l&link_type=abstract

Spitzer Proposal ID #40079

Physics

Scientific paper

Molecular material is thought to be a necessary ingredient for star-formation. The study of the molecular content in star-forming galaxies gives valuable insights into galaxy evolution: where, when, and how do galaxies start to form molecules? What impact does it have on the star formation history? Preliminary results on the dense and diffuse H2 content in a small sample of objects observed with IRS and FUSE indicate that the lack of H2 detection could probe genuinely young systems, with one or few star-formation episodes. Moreover, it seems that the paucity of dense H2 in some objects can be explained by extremely hard radiation. We propose to investigate further and answer these questions by doubling the existing cross-sample of objects observed with the IRS and FUSE.

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