UBV starcounts in SA54 and global structure of the Galaxy

Details UBV starcounts in SA54 and global structure of the Galaxy UBV starcounts in SA54 and global structure of the Galaxy

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aj....103..117y&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 103, Jan. 1992, p. 117-130.

Astronomy and Astrophysics

Astronomy

50

Galactic Structure, Milky Way Galaxy, Ubv Spectra, Astronomical Photometry, Color-Color Diagram, Schmidt Telescopes, Star Distribution

Scientific paper

Using new UBV star-count data obtained from observations with the Kiso Schmidt telescope centered in Selected Area 54, together with literature data on the 22-h field and the North and South Galactic Pole (NGP and SGP) regions, a Galaxy model is developed which consists of a thin-disk, a thick-disk, and a spheroid component. The constraints on structural parameters of these three components are derived. The scale-length of the thin disk is derived to be H(R) = 3.8 kpc. The structural parameters of the thick disk are H(Z) = 900 pc for the scale height and A(thick) = 0.019 for local normalization relative to thin disk.

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