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arxiv: 1602.02816 · v1 · pith:DS3RGV6Onew · submitted 2016-02-08 · 🌌 astro-ph.GA

Are the hosts of VLBI selected radio-AGN different to those of radio-loud AGN?

classification 🌌 astro-ph.GA
keywords radio-agnvlbidetectedhostobservationspopulationpropertiesradio-loud
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Recent studies have found that radio-AGN selected by radio-loudness show little difference in terms of their host galaxy properties when compared to non-AGN galaxies of similar stellar mass and redshift. Using new 1.4~GHz VLBI observations of the COSMOS field we find that approximately 49$\pm8$\% of high-mass (M $>$ 10$^{10.5}$ M$_{\odot}$), high luminosity (L$_{1.4}$ $>$ 10$^{24}$ W~Hz$^{-1}$) radio-AGN possess a VLBI detected counterpart. These objects show no discernible bias towards specific stellar masses, redshifts or host properties other than what is shown by the radio-AGN population in general. Radio-AGN that are detected in VLBI observations are not special, but form a representative sample of the radio-loud AGN population.

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