Red Quasars and the X-Ray Background

Details Red Quasars and the X-Ray Background Red Quasars and the X-Ray Background

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000cxo..prop..669w&link_type=abstract

Chandra Proposal ID #02700581

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Chandra Proposal Id #02700581

Scientific paper

The Two Micron All-Sky Survey (2MASS) is compiling a sample of new, red, active galaxies whose number density adds significantly to known populations. The typical optical polarization of a 2MASS active galactic nucleus (AGN) is higher than for UV-selected sources, indicating the presence of substantial obscuration toward the nuclear energy source. We propose Chandra ACIS-I observations of a well-defined subset of 2MASS AGN to: 1) estimate the AGN luminosities; 2) measure the line-of-sight obscuration; 3) assemble near-IR-to-X-ray spectral energy distributions (SEDs). Comparison with AGN selected by other means will allow us to place the new sources in context, and determine whether they are the missing ``obscured AGN'' predicted by the Unified Scheme and cosmic X-ray background.

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