Computer Science
Scientific paper
Nov 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011sacm.confe..21h&link_type=abstract
The Starburst-AGN Connection under the Multiwavelength Limelight, held 14-16 September 2011. Published online at http://www.scio
Computer Science
Scientific paper
Major mergers are important drivers of galaxy evolution, transform spirals into massive ellipticals, are fuelling active galactic nuclei and trigger the most rapid and intense star-formation known in the universe. During a merger process, violent relaxation acts on stars present in gas-rich progenitor disks, while the centres are structured by the relics of dissipational, compact starbursts, imprinting a central "extra light" component or "cusp" into the surface brightness profiles of merger remnants. Our HST NICMOS imaging program of the 88 most luminous LIRGs in the Great Observatories All-sky LIRG Survey (GOALS) shows that the central luminosity surface density in nearby LIRGs increases significantly along the merger sequence, indicating that the gas inflow fuels a central starburst and subsequently builds a compact stellar cusp. We will examine the relation between the cusp luminosity (central starburst) and AGN activity (as measured by our mid-IR line spectroscopy diagnostics), and discuss its implication for SMBH growth and AGN fuelling.
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