Quasar candidates near A1139, A1775, and 1633+33

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Spectroscopy, Quasars, Gravitational Lenses, Magnitude, Photographic Plates, White Dwarf Stars

Scientific paper

Lists of quasar candidates discovered with blue, blue green, and and green grens plates are presented, along with a discussion of the surface densities of quasars and a comparison with the 3C 345 field. The plates covered the fields A1139, A1775, and 1663+33. A total of 74 new candidate quasars were detected, with surface densities higher than usually observed with a slitless spectra technique. The 3C 345 field was filled with quasars brighter than 19 mag, although slit spectra are recommended for confirmation.

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