X-ray emitting AGN unveiled by the Chandra Multiwavelength Project

Details X-ray emitting AGN unveiled by the Chandra Multiwavelength Project X-ray emitting AGN unveiled by the Chandra Multiwavelength Project

2003-10-31

arxiv.org/abs/astro-ph/0310907v1

Astronomy and Astrophysics

Astrophysics

4 pages; to appear in AGN Physics with the Sloan Digital Sky Survey (July 2003; Princeton, NJ), eds. G.T. Richards and P.B. Ha

Scientific paper

We present an X-ray and optical analysis of a 2-8 keV flux limited (fx > 10e-14 erg s^-1 cm^-2) sample of 126 AGN detected in 16 Chandra fields. This work represents a small though significant subset of the Chandra Multiwavelength Project (ChaMP). We have chosen this limiting flux to have a reasonable degree of completeness (50%) in our optical spectroscopic identifications. The optical counterparts of these AGN are characterized as either broad emission line AGN (BLAGN; 67%), narrow emission line galaxies (NELG; 22%) or absorption line galaxies (ALG; 11%) without any evidence of an AGN signature. Based on their X-ray luminosity and spectral properties, we show that NELG and ALG are primarily the hosts of obscured AGN with an intrinsic absorbing column in the range of 10^21.5

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