The systemic redshift of the quasar 1331 + 170

Details The systemic redshift of the quasar 1331 + 170 The systemic redshift of the quasar 1331 + 170

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...381l...5c&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 381, Nov. 1, 1991, p. L5-L8.

Astronomy and Astrophysics

Astrophysics

43

Astronomical Spectroscopy, Infrared Spectra, Line Spectra, Quasars, Red Shift, Emission Spectra, Forbidden Bands, H Lines, Infrared Telescopes

Scientific paper

Infrared spectra covering the 1.6- and 2-micron regions of the quasar 1331 + 170, redshift z = 2.09, were obtained with the CGS4 spectrometer at the UK Infrared Telescope. These spectra show redshifted H-alpha, H-beta, and (O-III) lines. The redshifts of the forbidden lines are similar to the low-ionization lines measured at optical wavelengths but are significantly higher than the high-ionization-line redshift. Thus, the low-ionization lines are likely to provide a reliable estimate for the systematic redshift in this object, and the high-ionization material is therefore flowing out from, or into, the quasar and is subject to some obscuration.

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