1610-771 - A QSO with a steep optical spectrum

Details 1610-771 - A QSO with a steep optical spectrum 1610-771 - A QSO with a steep optical spectrum

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.192p..31h&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 192, Aug. 1980, p. 31P-35P. Research supported by the Australian Resear

Astronomy and Astrophysics

Astronomy

9

Emission Spectra, Galactic Radiation, Light Emission, Quasars, Atmospheric Windows, Continuous Spectra, Line Spectra, Lyman Alpha Radiation, Red Shift

Scientific paper

1610-771 is a strong flat-spectrum radio source identified with a QSO. The optical spectrum is found to have a steep power-law continuum with an observed spectral index alpha of 3.8 (f(nu) is proportional to nu to the -alpha power). Corrections due to atmospheric dispersion and to reddening within the Galaxy lead to a best estimate for alpha of 2.7. The redshift (1.710) is the highest yet found for a QSO with a steep optical continuum bringing the red-shifted Lyman alpha line within the atmospheric window.

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