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BVRI CCD-Photometry of Comparison Stars in the Fields of Galaxies with Active Nuclei. VII

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Astrophysics Aims and scope

Data are presented from observations in the B, V, R, and I bands of 234 comparison stars in the fields of 21 active galactic nuclei (AGN) with right ascensions from 9 to 24 hours over a wide range of stellar magnitudes. Most of the AGN are blazars and quasars. The B, V, R, and I magnitudes of the overwhelming majority of these stars were not known previously. Finding charts for these stars are provided. These observations can be used for differential photometry of galactic nuclei.

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Authors and Affiliations

  1. M. V. Lomonosov Moscow State University, Moscow, Crimea, Ukraine

    V. T. Doroshenko

  2. Crimean Astrophysical Observatory, P/O Nauchny Crimea, 98409, Russia

    Yu. S. Efimov*, G. A. Borman & N. G. Pulatova

  3. National Astronomical Research Institute of Thailand, Chiang Mai, Thailand

    N. G. Pulatova

Authors
  1. V. T. Doroshenko
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  2. Yu. S. Efimov*
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  3. G. A. Borman
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  4. N. G. Pulatova
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Corresponding author

Correspondence to V. T. Doroshenko.

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* Deceased.

Translated from Astrofizika, Vol. 57, No. 2, pp. 189-207 (May 2014).

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Doroshenko, V.T., Efimov*, Y.S., Borman, G.A. et al. BVRI CCD-Photometry of Comparison Stars in the Fields of Galaxies with Active Nuclei. VII. Astrophysics 57, 176–196 (2014). https://doi.org/10.1007/s10511-014-9324-y

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  • DOI: https://doi.org/10.1007/s10511-014-9324-y

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