The environment of the radio-quiet quasar E 1821+643

Details The environment of the radio-quiet quasar E 1821+643 The environment of the radio-quiet quasar E 1821+643

Jun 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aspc..176..389s&link_type=abstract

Observational Cosmology: The Development of Galaxy Systems, Proceedings of the International Workshop held at Sesto Pusteria, Bo

Astronomy and Astrophysics

Astronomy

3

Scientific paper

We present a combined ROSAT and ASCA analysis of the QSO E 1821+643. The data are compatible with a QSO embedded in a cluster of galaxies with a strong cooling flow, an ambient temperature T>=4keV and a metallicity Z<=0.4Z&sun;. The thermal emission from the cluster is responsible for part of the strong observed iron line emission but can not provide it all. A second source of line emission, either intrinsic to the QSO or due to reprocessing in the dense gas of the cluster cooling flow, is identified. We suggest that, together with IRAS 09104+4109 and HS 0624+6907, E 1821+643 forms a new class of high luminosity, radio-quiet quasar associated with rich environments.

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