Statistics – Methodology
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21944122n&link_type=abstract
American Astronomical Society, AAS Meeting #219, #441.22
Statistics
Methodology
Scientific paper
We present the preliminary results for a project which will ultimately provide the first accurate, statistical picture of the relative importance of Low-Luminosity Active Galactic Nuclei (LLAGN) and star formation (SF) in the ATLAS-3D sample (Cappellari et al. 2011) of 260 early-type galaxies (ETGs). The sample has a host of photometric and integral-field spectroscopic measurements already available in the optical and millimeter regimes, making it an ideal sample to draw from for galaxy evolution studies. We will use this multiwavelength, ancillary data in concert with our deep ( 25 micro-Jy per beam rms), multifrequency radio continuum observations from the newly-upgraded EVLA to distinguish between the dominant nuclear emission mechanism, SF or LLAGN, in ETGs. At this time, we present the goals and methodology of our project as well as the results of a pilot EVLA study of a sub-sample of 20 ATLAS-3D galaxies observed at 1.4 and 5 GHz chosen to have a variety of CO, IR and radio properties. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc.
Cappellari Michele
Emsellem Eric
Krajnović Davor
McDermid Richard
Morganti Rafaella
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