Faint Blue Objects at High Galactic Latitude. I. Palomar Schmidt Field Centered on Selected Area 57

https://ui.adsabs.harvard.edu/#abs/1981ApJS...46..117U/abstract https://ui.adsabs.harvard.edu/link_gateway/1981ApJS...46..117U/doi:10.1086/190739

Objects have been selected for relative ultraviolet excess from a Palomar 1.2m Schmidt field centered on Kapteyn Selected Area 57, near the north galactic pole. Object selection to B = 20 mag used a novel semi-quantitative technique, permitting two-parameter color classification. All known quasars in the field have been rediscovered. Four new quasars are reported here. The integral number counts of the listed objects are given as a function of their assigned color classes. The population of objects belonging to color classes 1A, 1, and 1B should be comprised primarily of quasars and white dwarfs and should be virtually complete to B = 18.5 mag.

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Work Title Faint Blue Objects at High Galactic Latitude. I. Palomar Schmidt Field Centered on Selected Area 57
Access
Open Access
Creators
  1. Peter D. Usher
Keyword
  1. white dwarfs
  2. quasars
  3. survey
  4. blue stars
License CC BY-NC-SA 4.0 (Attribution-NonCommercial-ShareAlike)
Work Type Research Paper
Acknowledgments
  1. A. Warnock III
Publication Date 1981
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Deposited August 04, 2019

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  • Updated Work Title, Description, Publication Date Show Changes
    Work Title
    • I. Palomar Schmidt Field centered on Selected Area 57 (1981)
    • Faint Blue Objects at High Galactic Latitude. I. Palomar Schmidt Field Centered on Selected Area 57
    Description
    • Objects have been selected for relative ultraviolet excess from a Palomar 1.2m Schmidt field centered on Kapteyn Selected Area 57, near the north galactic pole. Object selection to B = 20 mag used a novel semi-quantitative technique, permitting two-parameter color classification. All known quasars in the field have been rediscovered. Four new quasars are reported here. The integral number counts of the listed objects are given as a function of their assigned color classes. The population of objects belonging to color classes 1A, 1, and 1B should be comprised primarily of quasars and white dwarfs and should be virtually complete to B = 18.5 mag. https://ui.adsabs.harvard.edu/#abs/1981ApJS...46..117U/abstract https://ui.adsabs.harvard.edu/link_gateway/1981ApJS...46..117U/doi:10.1086/190739
    • https://ui.adsabs.harvard.edu/#abs/1981ApJS...46..117U/abstract https://ui.adsabs.harvard.edu/link_gateway/1981ApJS...46..117U/doi:10.1086/190739
    • Objects have been selected for relative ultraviolet excess from a Palomar 1.2m Schmidt field centered on Kapteyn Selected Area 57, near the north galactic pole. Object selection to B = 20 mag used a novel semi-quantitative technique, permitting two-parameter color classification. All known quasars in the field have been rediscovered. Four new quasars are reported here. The integral number counts of the listed objects are given as a function of their assigned color classes. The population of objects belonging to color classes 1A, 1, and 1B should be comprised primarily of quasars and white dwarfs and should be virtually complete to B = 18.5 mag.
    Publication Date
    • 1981
  • Published
  • Updated