Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...207.2001t&link_type=abstract
American Astronomical Society Meeting 207, #20.01; Bulletin of the American Astronomical Society, Vol. 37, p.1189
Astronomy and Astrophysics
Astronomy
Scientific paper
Optically Passive X-ray Galaxies (OPXGs), found in great numbers in the Chandra Deep Fields, are luminous X-ray sources with unremarkable optical spectra. It has been alternately suggested that they are BL Lac-type objects, normal emission line AGN whose nuclear spectrum is swamped by galactic emission, highly obscured Seyferts, or low luminosity AGN accreting at a fraction of their Eddington rate. All of these explanations likely apply to some sources, but it is unclear what fraction falls into each category. We present a multiwavelength study of a radio-selected sample of OPXGs which spans a dynamic range of >10,000 in radio power, sampling both the radio-loud and -quiet OPXG populations. Most of the objects are X-ray bright, as well as optically bright and resolved, allowing us to study in greater detail the various possible scenarios for OPXGs. We will present radio, optical, and Chandra ACIS data for our sample objects and discuss their relationship to counterparts in the Chandra Deep Field.
Laurent-Muehleisen Sally A.
McMillan Russet J.
Thompson Richard Jule Jr.
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