Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984afz....20...43t&link_type=abstract
(Astrofizika, vol. 20, Jan.-Feb. 1984, p. 43-50) Astrophysics (ISSN 0571-7132), vol. 20, no. 1, July 1984, p. 30-35. Translation
Astronomy and Astrophysics
Astronomy
7
Astronomical Photometry, Brightness Distribution, Galactic Structure, Ubv Spectra, Ultraviolet Astronomy, Astronomical Spectroscopy, Color, Galactic Nuclei, H Ii Regions
Scientific paper
Detailed photographic UBV photometry of two physical systems of galaxies with ultraviolet excess (Nos. 27, 28, 29 and Nos. 346, 347, 348) from Kazarian's lists (1979, 1980), is reported. The distribution of the surface brightness B/sq arcsec and the color indices U-B and B-V along the semimajor axes of galaxies Nos. 28 and 348 is given, together with the (U-B, B-V) diagrams. In both groups, it is noted that the galaxies have similarities in a number of photometric characteristics. The ultraviolet excess in the investigated galaxies has, in all probability, a stellar origin and, as a rule, is localized in the nuclear regions. It is noted that in galaxy No. 346 there are seven bright condensations which, on the basis of the absolute magnitudes and colors, are superassociations (giant H II regions).
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