Optical spectroscopy of X-ray-selected active galactic nuclei

Details Optical spectroscopy of X-ray-selected active galactic nuclei Optical spectroscopy of X-ray-selected active galactic nuclei

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989aj.....97...10s&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 97, Jan. 1989, p. 10-35.

Astronomy and Astrophysics

Astronomy

80

Active Galactic Nuclei, Astronomical Spectroscopy, Luminosity, Red Shift, Visible Spectrum, X Ray Sources, Astronomical Catalogs, Continuous Spectra, Quasars, Seyfert Galaxies

Scientific paper

Optical spectra of 65 X-ray-selected AGN (XAGN) from several identification samples are presented and classified based on their spectra and optical-continuum luminosities. The 'red XAGN' of Stocke et al. (1983) appear to be a mix of previously known types of objects; their red colors appear to be caused by starlight. X-ray selection may be an efficient way to find narrow-line Seyfert 1 galaxies. A possible spectral discriminant between quasars and Seyfert 1 galaxies is pointed out.

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