Infrared observations of the X-ray quasars 0241+622 and MR2251-178

Details Infrared observations of the X-ray quasars 0241+622 and MR2251-178 Infrared observations of the X-ray quasars 0241+622 and MR2251-178

Mar 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979natur.278..231s&link_type=abstract

Nature, vol. 278, Mar. 15, 1979, p. 231, 232.

Astronomy and Astrophysics

Astronomy

8

Infrared Astronomy, Infrared Spectra, Quasars, X Ray Sources, Red Shift, Spectral Energy Distribution, Spectrophotometry

Scientific paper

Infrared observations of the recently discovered X-ray quasars 0241+622 and MR2251-178 are reported. Broadband photometry of both quasars was conducted in the 1.25 to 20 micron range and spectrophotometry of 0241+622 was carried out from 1.5 to 2.5 microns. The IR energy distributions of 0241+622, MR2251-178 and the X-ray quasar 3C273 are presented, noting that for wavelengths less than 10 microns, the energy distributions of all three quasars are similar and cannot be distinguished from those of other low redshift quasars. The observed IR, visual and X-ray luminosities of the three quasars are compared and are found not to be strongly correlated. It is remarked, however, that the three X-ray quasars are the brightest known quasars at IR and visual wavelengths, which supports the suggestion that all quasars are bright X-ray emitters.

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