A new infrared spectral component of the quasar 3C273

Details A new infrared spectral component of the quasar 3C273 A new infrared spectral component of the quasar 3C273

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.323..134r&link_type=abstract

Nature (ISSN 0028-0836), vol. 323, Sept. 11, 1986, p. 134-136. SERC-supported research.

Astronomy and Astrophysics

Astronomy

56

Astronomical Spectroscopy, Infrared Spectra, Quasars, Astronomical Models, Flares, Interstellar Matter, Line Spectra, Radio Spectra

Scientific paper

Following the dramatic infrared to millimetre-wavelength flare seen in the quasar 3C 273 during 1983, the authors have continued to monitor its overall continuum emission. Recent measurements show that the 10 μm to 3 mm emission has decayed to a level well below any seen previously, while the 1 - 4 μm emission has remained relatively constant. This behaviour has revealed the presence of an apparently non-variable component which dominates the near-infrared emission in 3C 273 and includes the small 'bump' at ≡3.5 μm in the power-law continuum previously noted by Neugebauer et al.

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