A Fundamental Evolutionary Plane for Infrared Luminous Galaxies at Low Redshift

Details A Fundamental Evolutionary Plane for Infrared Luminous Galaxies at Low Redshift A Fundamental Evolutionary Plane for Infrared Luminous Galaxies at Low Redshift

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21342414c&link_type=abstract

American Astronomical Society, AAS Meeting #213, #424.14; Bulletin of the American Astronomical Society, Vol. 41, p.248

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a novel method for analyzing spectra of Luminous InfraRed Galaxies (LIRGs) and demonstrate it on a large mid-infrared spectroscopic dataset taken with the Spitzer space telescope. First, we utilize a Bayesian based estimator, marginalizing over luminosity, obscuration and instrument noise, to produce likelihood ratios describing the degree of resemblance between every possible pair of spectra. Second, we use a visualization algorithm based on force-directed network layouts to efficiently discern large-scale trends across the sample. In so doing, we are able to deduce possible evolutionary trends in the sample of LIRGs considered.

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