Abstract
A high-resolution 2 cm map of the nuclear region of the spiral galaxy NGC 253 is analyzed. The size, position angle, flux density, and brightness temperature for compact radio sources in NGC 253 are described. The central core and radio knots of NGC 253 are examined. It is observed that the central radio source has a brightness temperature of 90,000 K and is surrounded by knots of 0.1 arcsec with spectral indices of -0.3 and brightness temperatures of a few thousand degrees. The alignment of the knots at position angle 44 deg + or - 1 deg is studied. The relationship between the nuclear structure orientation and the nuclear activity is discussed. 35 references.
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