CO in Hickson compact group galaxies with enhanced warm H 2 emission: Evidence for galaxy evolution?
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2014
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Astronomy and Astrophysics
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Context. Galaxies in Hickson Compact Groups (HCGs) are believed to experience morphological transformations from blue, star-forming galaxies to red, early-type galaxies. Galaxies with a high ratio between the luminosities of the warm H2 to the 7.7 μm PAH emission (so-called Molecular Hydrogen Emission Galaxies, MOHEGs) are predominantly in an intermediate phase, the green valley. Their enhanced H2 emission suggests that the molecular gas is affected in the transition.
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Lisenfeld, U., Appleton, P.N., Cluver, M.E., Guillard, P., Alatalo, K. & Ogle, P. 2014. CO in Hickson compact group galaxies with enhanced warm H 2 emission: Evidence for galaxy evolution?. Astronomy and Astrophysics. 570(4):A24 - 177. http://hdl.handle.net/11427/35104