UBVRI photometry of active galaxies. I - Observations

Details UBVRI photometry of active galaxies. I - Observations UBVRI photometry of active galaxies. I - Observations

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26as...68..383h&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 68, no. 3, March 1987, p. 383-396. Sponsorship: Fondo Nacion

Mathematics

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61

Active Galaxies, Astronomical Catalogs, Astronomical Spectroscopy, Galactic Structure, Ubv Spectra, Electrophotometry, Galactic Nuclei, Statistical Analysis

Scientific paper

A total of 693 UBVRI photoelectric observations for 91 active galaxies are reported. These observations were secured as part of a one-year monitoring program. Objects are classified in three classes according to their degree of variability; 52 percent of the galaxies did not show a significant variability (class 1); 12 percent showed some variations (class 2); and 35 percent displayed significant variations (class 3). A comparison with four other sets of photometric values is carried out.

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