Physics
Scientific paper
Jun 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1240...82g&link_type=abstract
HUNTING FOR THE DARK: THE HIDDEN SIDE OF GALAXY FORMATION. Edited by Victor P. Debattista and Cristina C. Popescu AIP Conferen
Physics
Galaxies, Infrared Spectrometers, Hydrogen, Star Formation, Collision Processes, Origin, Formation, Evolution, Age, And Star Formation, Infrared Spectrometers, Auxiliary Equipment, And Techniques, Hi Regions And 21-Cm Lines, Diffuse, Translucent, And High-Velocity Clouds, Star Formation, Galaxy Mergers, Collisions, And Tidal Interactions
Scientific paper
One of the most surprising results obtained with the Spitzer space telescope was the discovery of powerful mid-IR H2 line emission from a significant number of sources that are in active phases of galaxy evolution, in which star formation seems strongly suppressed. The underlying physics may be a key ingredient to describe the buildup of baryonic mass in galaxies and their evolution. We present here two multiwavelength studies of an interacting galaxy system, Stephan's Quintet, and an AGN host radio galaxy, 3C326, which suggest that the H2 line emission heralds the dissipation of kinetic energy in a multiphase medium. The results provide new insight on the energetics of galaxy formation.
Appleton Phil N.
Boulanger Francois
Cluver Michelle E.
Guillard Pierre
Nesvadba P. H. N.
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