Discovery of two bright low-redshift quasars by the Hamburg quasar survey

Details Discovery of two bright low-redshift quasars by the Hamburg quasar survey Discovery of two bright low-redshift quasars by the Hamburg quasar survey

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...223l...1g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 223, no. 1-2, Oct. 1989, p. L1-L4.

Astronomy and Astrophysics

Astronomy

9

Astronomical Spectroscopy, Quasars, Red Shift, Sky Surveys (Astronomy), Emission Spectra, Luminosity, Magnitude, Spectral Line Width

Scientific paper

Two bright low-redshift quasars, HS 0624+6907 (V = 14.2 m z = 0.370) and HS 1227+4530 (V = 16.3 m, z = 0.194) have been discovered by follow-up spectroscopy of candidates selected from objective-prism plates of the Hamburg Schmidt sky survey. Accordingly, HS 0624+6907 is the brightest quasar discovered by optical selection. Its spectrum and absolute magnitude (M = -28.0 m) closely resemble those of 3C273 except for the presence of very narrow O III-emission lines. HS 1227+4530 is less luminous (M =-240m. The possibility that some bright low-redshift quasars have escaped detection because their objective-prism spectra are similar to those of subluminous F stars is discussed.

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