Confirmation of the Galactic thick disk component by the Basle RGU- and UBV-photometric space densities.

Details Confirmation of the Galactic thick disk component by the Basle RGU- and UBV-photometric space densities. Confirmation of the Galactic thick disk component by the Basle RGU- and UBV-photometric space densities.

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26as...78..217f&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 78, no. 2, May 1989, p. 217-229. Research supported by SNSF.

Astronomy and Astrophysics

Astrophysics

21

Astronomical Photometry, Galactic Structure, Milky Way Galaxy, Space Density, Ubv Spectra, Halos, Histograms, Luminosity, Photographic Plates, Tables (Data)

Scientific paper

Published observational data on five Galactic-anticenter-hemisphere star fields from the Basle Halo Program (BHP) of Becker (1965) are analyzed in order (1) to determine their total space densities on the basis of three-color (RGU and/or UBV) photometry and (2) to compare these densities with the gradients of standard theoretical models of Galactic structure. The history of the BHP is reviewed; the analytical methods and theoretical models are described in detail; and results are presented in tables and graphs for SA 71, SA 94, NGC 2420, and M67/Praesepe. The observed density histograms for all five fields are found to be in good agreement with a model containing a thick disk component.

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