Uncovering the Missing Active Galactic Nuclei: The 2MASS Bright Seyfert Sample

Details Uncovering the Missing Active Galactic Nuclei: The 2MASS Bright Seyfert Sample Uncovering the Missing Active Galactic Nuclei: The 2MASS Bright Seyfert Sample

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aspc..311..449m&link_type=abstract

AGN Physics with the Sloan Digital Sky Survey, Proceedings of a conference held in Princeton, NJ, USA, 27-31 July 2003, Edited b

Physics

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Scientific paper

We have used the Two Micron All Sky Survey (2MASS) to produce a large (>4000) sample of Seyfert galaxies and quasars which overcomes the incompleteness of previous searches imposed by extinction. Half of the candidates were found by requiring that the central (H-K) color of XSC sources was greater than 0.6. An equal number of AGN candidates, at higher redshifts, was obtained from PSC sources with total (H-K) colors greater than 0.6. Over the entire sky more than 20 degrees away from the galactic plane, the resulting 2MASS Bright Seyfert sample is complete down to a nonstellar nuclear flux limit of KAGN = 13.5, except for Seyfert nuclei which are fainter than starlight within the central seeing disk. Less than half of the sample has been detected in the ROSAT All Sky Survey.

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