Hot Subluminous Stars and Blue Objects in the Case Low-Dispersion Northern Sky Survey. II. Quasar Candidates

Astronomy and Astrophysics – Astronomy

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Quasars: General, Surveys, Quasars: Emission Lines

Scientific paper

We present spectra for 124 objects selected from the Case Low-Dispersion Northern Sky Survey. The objects were selected from the Case Stellar Objects (CSO) and consist of unresolved point sources having either a featureless blue continuum or emission features in their discovery spectra. Forty-six of the objects are confirmed quasars with redshifts ranging from 0.20 to 2.97 with a median redshift of 1.62. We find that the CSO list is an excellent source of bright, low redshift quasars. Several quasars exhibit absorption lines arising from intervening material. CSO 118 is a bright (V =~ 16.5 mag) QSO with a prominent Ly-alpha forest at a redshift of 2.97. Three of the objects are either LINERS or H II region galaxies. Most of the remaining classifiable objects are galactic stars and we find 11 DA white dwarfs, 1 DB white dwarf, 3 sdB stars, 1 sdOB star, and 22 sdF-G stars. The remaining 35 objects have noisy or featureless spectra. (SECTION: Quasars and Active Galactic Nuclei)

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