Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...254l..29h&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 254, Mar. 15, 1982, p. L29, L30.
Astronomy and Astrophysics
Astronomy
23
Astronomical Photometry, Infrared Astronomy, Infrared Photometry, Quasars, Cosmic Dust, Far Infrared Radiation, Luminosity, Millimeter Waves, Spectral Energy Distribution
Scientific paper
The first detection of a quasar between 10 and 1000 microns is reported. The observation permits (1) the determination of the intersection of the optical/infrared and millimeter continua; (2) more precise determination of the total luminosity; (3) the placing of limits on the contribution of any thermal dust emission to the total luminosity. The quasar is the first object ever to have been observed whose energy distribution peaks at wavelength of about 100 microns without a large contribution to the total luminosity from thermal dust emission. The observed flux density of 2.2 + or - 0.5 Jy at 100 microns and an upper limit of 0.5 + or - 0.6 Jy at 50 microns clearly define the overall energy distribution and show the quasar to be a powerful far-infrared source.
Harvey Paul Michael
Joy Marhshall
Wilking Bruce A.
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