Eigenvector 1: Towards AGN Spectroscopic Unification

Details Eigenvector 1: Towards AGN Spectroscopic Unification Eigenvector 1: Towards AGN Spectroscopic Unification

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007rmxac..28...83s&link_type=abstract

The 3rd Mexico-Korea Conference on Astrophysics: Telescopes of the Future and San Pedro Mártir (Eds. Stan Kurtz, José Franco, Se

Astronomy and Astrophysics

Astrophysics

1

Galaxies: Active, Galaxies: Quasars: General, Galaxies: Seyfert

Scientific paper

We present an introduction to the Eigenvector 1 parameter space, which is an attempt to find a spectroscopic unification for broad-line emitting AGN. It is a 4D parameter space that uses optical, UV and X-ray measures to discriminate between different classes of AGN. Differences in parameter space occupation suggest that radio-loud sources are fundamentally different from the radio-quiet majority. This is a derivative of our suggestion that two distinct populations of broad-line emitting AGN may exist. We suggest that exploration of Eigenvector 1 space at higher redshift and source luminosities would be a valuable program for the proposed new telescopes at San Pedro Mártir.

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