A 2.2-micron map of NGC 5128

Details A 2.2-micron map of NGC 5128 A 2.2-micron map of NGC 5128

Jan 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.202..241a&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 202, Jan. 1983, p. 241-248. Research supported by the Science and Engin

Astronomy and Astrophysics

Astronomy

15

Astronomical Maps, Galactic Structure, Infrared Astronomy, Peculiar Galaxies, Radio Galaxies, Spectral Energy Distribution, Astrometry, Brightness, Cosmic Dust, Elliptical Galaxies, Galactic Nuclei, Radii, Surface Properties

Scientific paper

A 2.2-μm map of the peculiar radio galaxy NGC 5128 (Centaurus A) is presented. The elliptical component of the galaxy has a surface brightness which varies with radius in accordance with de Vaucouleurs' law and a V-K colour which becomes bluer with increasing radius. The 'dust lane' of the galaxy contains an emission feature at 2.2 μm, and the observations are consistent with there being a stellar disc of projected radius 80 arcsec and projected thickness 15 arcsec, centred on the nucleus of the galaxy and aligned with the dust lane. The 2.2-10 μm colour of a conspicious part of the disc is discussed.

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