Optical imaging of the low redshift superluminous QSO 1821 + 643

Details Optical imaging of the low redshift superluminous QSO 1821 + 643 Optical imaging of the low redshift superluminous QSO 1821 + 643

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....101.2001h&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 101, June 1991, p. 2001-2003.

Astronomy and Astrophysics

Astronomy

30

Luminosity, Optical Filters, Quasars, Red Shift, Very Large Array (Vla), Charge Coupled Devices, Cosmic Dust, Galactic Nuclei, Infrared Radiation, Molecular Clouds

Scientific paper

Optical imaging is presented of the luminous z = 0.3 QSO 1821 + 643, with resolution 1.0 and 0.4 arcsec. The host galaxy is resolved and seen to be large, featureless, and red, with slightly displaced outer isophotes. The nucleus is unusually red. There is a rich cluster of galaxies in the field which is probably at a much higher redshift, and extended nebulosity from a nearby star. These results and the IR properties are discussed in terms of a mature merger of a luminous galaxy in which there is still a considerable amount of central dust and molecular clouds.

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