A Binary AGN at z=0.71 in the Extended Groth Strip

Details A Binary AGN at z=0.71 in the Extended Groth Strip A Binary AGN at z=0.71 in the Extended Groth Strip

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...207.8009g&link_type=abstract

American Astronomical Society Meeting 207, #80.09; Bulletin of the American Astronomical Society, Vol. 37, p.1298

Astronomy and Astrophysics

Astronomy

Scientific paper

We present spectroscopic evidence from the DEEP2 survey for a galaxy hosting a binary active nucleus at redshift z=0.71 in the Extended Groth Survey Strip. The optical spectrum shows very unusual spectral features, including very bright, double-horned [OIII] emission, with peaks separated by several hundred km/s in velocity space and approximately one kpc projected on the sky. In addition, we present imaging and flux measurements for this object across a wide range of wavelengths, from radio to X-ray. HST/ACS imaging of the host galaxy appears to show an elliptical that has recently undergone a dissipationless (gas-free) merger. Binary AGN are rare---only a few examples are known---but the study of such objects is important for understanding both the formation of cores in elliptical galaxies and the growth of supermassive black holes.

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