BVRI CCD-photometry of comparison stars in the neighborhoods of galaxies with active nuclei. III

Details BVRI CCD-photometry of comparison stars in the neighborhoods of galaxies with active nuclei. III BVRI CCD-photometry of comparison stars in the neighborhoods of galaxies with active nuclei. III

Jan 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ap.....50...40d&link_type=abstract

Astrophysics, Volume 50, Issue 1, pp.40-53

Astronomy and Astrophysics

Astrophysics

1

Stars, Photometry-Galaxies, Active Nuclei

Scientific paper

Observations with a matrix photometer are reported. The stellar magnitudes in the BVRcIc bands are estimated for 80 comparison stars in the neighborhoods of 10 galaxies with active nuclei: 2 Seyfert galaxies, 4 quasars, and 4 BL Lac objects. The stellar magnitudes of the observed stars range from 11 to 19m.5. For stars with magnitudes of 14 15m the typical photometric errors are 0m.011, 0m.008, 0m.006, and 0m.007 in the B, V, R, and I bands, respectively. The BVRI magnitudes for most of these stars were not known previously. 14′ × 14′ finding charts for these stars are included. These results can be used for differential BVRI photometry of active galactic nuclei.

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