The distribution of stars to V = 16th magnitude near the north galactic pole - Normalization, clustering properties, and counts in various bands

Details The distribution of stars to V = 16th magnitude near the north galactic pole - Normalization, clustering properties, and counts in various bands The distribution of stars to V = 16th magnitude near the north galactic pole - Normalization, clustering properties, and counts in various bands

May 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...246..122b&link_type=abstract

Astrophysical Journal, Part 1, vol. 246, May 15, 1981, p. 122-135.

Statistics

Applications

152

Astronomical Photometry, Binary Stars, Star Clusters, Star Distribution, Stellar Luminosity, Stellar Magnitude, Stellar Parallax

Scientific paper

The distribution on the sky of stars brighter than V= 16 mag near the North Galactic Pole is discussed. The available data are reviewed; the most important new data are from the catalog of Weistrop. All of the data are in agreement with predictions made from our standard Galaxy model when the giants are treated separately from the main sequence stars.
Transformations between different photometric bands, including U, B, J, F, V, R, I, g, and r, are given for a wide range of stellar types and luminosity classes. The necessary ingredients are provided for making color transformations to arbitrary bands that may be defined in the future with characteristic wavelengths between 4000 and 8500 A. Some illustrative applications are made to bands that are defined for Space Telescope instruments.
The star counts are predicted in all of the above listed bands down to 16th magnitude using the data of Weistrop with the color corrections of Faber et al.
The clustering properties of the stars are investigated with the aid of the two-point correlation function and the distributions of first and second-nearest neighbors, as well as photometric parallaxes. A significant fraction (∼15%) of the stars appear to be in binaries or triplets with a typical separation of order 0.1 pc.

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