Estimated Source Counts from the GSC-II Catalog

Details Estimated Source Counts from the GSC-II Catalog Estimated Source Counts from the GSC-II Catalog

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aspc..317..193d&link_type=abstract

Milky Way Surveys: The Structure and Evolution of our Galaxy, Proceedings of ASP Conference #317. The 5th Boston University Ast

Astronomy and Astrophysics

Astrophysics

Scientific paper

Using matched objects between the Sloan Digital Sky Survey (SDSS) and the Second Guide Star Catalog (GSC-II), the GSC-II RF band photometry is characterized with respect to the Sloan r' band for both point sources and extended sources. Transforming the RF photometry of the extended objects (``non-stars'' in GSC-II) within 10° of the NGP to r', the apparent magnitude distribution of galaxies as determined from Sloan data is recovered. Misclassification in GSC-II is characterized using the matching statistics and is found to vary with magnitude and the stellar density of the field. A statistical model of the GSC-II classifier is used to correct the source counts at lower galactic latitudes.

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