Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...114..182s&link_type=abstract
Astronomy and Astrophysics, vol. 114, no. 1, Oct. 1982, p. 182-187.
Astronomy and Astrophysics
Astrophysics
9
Astronomical Spectroscopy, Quasars, Red Shift, Spectral Line Width, Absorption Spectra, Luminosity, Space Density, Spectrum Analysis, Ultraviolet Spectra
Scientific paper
A large field (approximately 25 sq deg) around NGC 5334 was searched for QSO candidates with ultraviolet-excess, in order to investigate the space density, distribution, and luminosity of quasars near as well as far from bright galaxies. Spectroscopic data obtained with the European Southern Observatory 3.6 m telescope are presented for 13 quasars identified within a sample of 23 observed candidates. As expected, the redshift of these optically selected quasars was found to fall in the range 0.23-2.08, with only one exception. Two, and possibly three, of the quasars of the largest redshift show absorption lines, while the remaining 10 faint blue objects display zero-redshift stellar spectra.
Arp Halton C.
Barbier R.
Surdej Jean
Swings Jean Pierre
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