Discovery of a very red nucleus in the radio elliptical IC5063 /PKS2048-57/

Details Discovery of a very red nucleus in the radio elliptical IC5063 /PKS2048-57/ Discovery of a very red nucleus in the radio elliptical IC5063 /PKS2048-57/

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982natur.299..234a&link_type=abstract

Nature, vol. 299, Sept. 16, 1982, p. 234-236. Research supported by the Science and Engineering Research Council.

Astronomy and Astrophysics

Astronomy

20

Elliptical Galaxies, Galactic Nuclei, Infrared Astronomy, Radio Galaxies, Bl Lacertae Objects, Luminosity, Quasars

Scientific paper

The discovery of an extremely red IR source in the nucleus of the elliptical galaxy IC5063 (PKS2048-57) is reported. The observed 2.2-3.8-micron color index within a 5-arcsec aperture is 2.1 mag, while the colors at shorter wavelengths and in the 5-10 arcsec annulus around the nucleus are close to those of normal elliptical galaxies. The IR excess could arise from a BL LAC-type nucleus with a steep nonthermal spectrum similar to the recently identified 'red QSOs' typified by 1413+135.

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