Observations of NGC 253 at 843 MHz.
Abstract
Observations of NGC 253, which is a class SAB(s)c galaxy and the major member of the Sculptor group of galaxies, are reported. The observations were made on Aug. 23 and Sept. 3, 1982 with the Molonglo Observatory Synthesis Telescope. A 'cleaned' map of NGC 253 at 843 MHz superimposed on an Anglo-Australian Telescope plate shows halo, disc and nuclear emission. Assuming a distance of 3.1 Mpc, the emission extends about 3.5 kpc above and 4.5 kpc below the plane of the galaxy. The integrated spectrum is well fitted by a power law, s is proportional to nu to the alpha power, where alpha = -0.65 plus or minus 0.02.
- Publication:
-
Publications of the Astronomical Society of Australia
- Pub Date:
- 1983
- DOI:
- 10.1017/S1323358000016982
- Bibcode:
- 1983PASA....5..235R
- Keywords:
-
- Radio Astronomy;
- Radio Spectra;
- Spiral Galaxies;
- Astronomical Maps;
- Emission Spectra;
- Galactic Nuclei;
- Southern Sky;
- Astrophysics