Star formation properties and dynamics of Luminous Infrared Galaxies with adaptive optics
2009
Near infrared
adaptive opticsobservations are crucial to be able to interpret kinematic and
dynamical dataand study
star formationproperties within the often extremely
dustyinteracting luminous IR galaxies (LIRGs). NIR AO data are also needed to find supernovae in their bright and
dustycentral regions and to fully characterize the young stellar clusters found in these kinds of systems. We have used AO in the
K-bandto survey a sample of LIRGs at 0.1 arcsec (30 to 100 pc) resolution. The data are merged with SALT and AAT spectroscopic follow-up and HST and Spitzer archival imaging. The first AO detected SNe are reported as well as details of the first studied LIRGs. One LIRG showed an unexpected third component in the interaction, which moreover turned out to host the most active
star formation. Another target showed evidence in the NIR of a very rare case of leading spiral arms, rotating in the same direction as the arms open.
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