The photometric characteristics of the nuclei of local group galaxies

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Photometry, Galactic Nuclei, Galactic Radiation, Local Group (Astronomy), Ubv Spectra, Colorimetry, Elliptical Galaxies, Spiral Galaxies

Scientific paper

The results of UBV photoelectric photometry with different aperture sizes of the galaxies NGC 205 and M33 are presented, including those obtained with small aperture sizes. With the aperture decreasing, colour of NGC 205 changes first to blue and than to red; it is connected with the existence of a group of young stars in the central region of this galaxy. Colour of M33, with approaching the centre, becomes a little bit redder. Properties of stellar-like nuclei of M31, M32, NGC 205 and M33 are considered. Magnitudes and colours of the nuclei are shown to be different.

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