G5 and Later Stars in a North Galactic Pole Region (Upgren 1962)

Details G5 and Later Stars in a North Galactic Pole Region (Upgren 1962) G5 and Later Stars in a North Galactic Pole Region (Upgren 1962)

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ycat.3010....0u&link_type=abstract

VizieR On-line Data Catalog: III/10A. Originally published in: 1962AJ.....67...37U

Computer Science

Galactic Pole: North, Stars: Late-Type, Regional Catalog

Scientific paper

The catalog is an objective-prism survey of late-type stars in a region of 396 square degrees surrounding the north galactic pole. The objective-prism spectra employed have a dispersion of 580 A/mm at H-gamma and extend into the ultraviolet region. The catalog contains the magnitudes and spectral classes of 4027 stars of class G5 and later, complete to a limiting photographic magnitude of 13.0. The spectral classification of the stars is based on the Yerkes system. The catalog includes the serial numbers of the stars corresponding to the numbers on the identification charts in Upgren (1984), BD and HD numbers, B magnitudes, spectral classes, and letters designating the subregion and identification chart on which each star is located. This survey was undertaken to determine the space densities at varying distances from the galactic plane. Accurate separation of the surveyed stars of G5 and later into giants and dwarfs was achieved through the use of the UV region as well as conventional methods of classification. The resulting catalog of 4027 stars is probably complete over the region to a limiting photographic magnitude of 13.0. The region covered by the survey is the same as that discussed by Slettebak and Stock (1959) and is in the approximate range RA 11 30 to 13, Declination +25 to +50 (B1950.0). The catalog includes all M and Carbon stars previously published by Upgren (1960).
For a discussion of the classification criteria, the combining of multiple classifications (each spectral image was classified twice), the determination of magnitudes, and additional details about the catalog, the source reference should be consulted.
(2 data files).

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