A multicolor optical survey of QSOs to B of about 21.8 in the Hercules field

Details A multicolor optical survey of QSOs to B of about 21.8 in the Hercules field A multicolor optical survey of QSOs to B of about 21.8 in the Hercules field

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pasp..101..631z&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 101, July 1989, p. 631-639.

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3

Astronomical Photometry, Quasars, Ubv Spectra, Galactic Evolution, Photographic Plates

Scientific paper

Using catalogs generated from automatic photometry of faint images on fine-grained 4-m photographic plates, a UBV multicolor survey of QSOs over an area of about 0.285 square degree in Hercular has been completed. Thirty QSO candidates brighter than B of about 21.8 were selected with stellar-like images and UBV colors uncommon for Galactic stars. The counts of QSO candidates from this study are consistent with those from other surveys.

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