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Title:
A 2.2-micron map of NGC 5128
Authors:
Adams, D. J.; Adamson, A. J.; Giles, A. B.
Affiliation:
AA(Leicester, University, Leicester, England), AB(Leicester, University, Leicester, England), AC(Leicester, University, Leicester, England)
Publication:
Royal Astronomical Society, Monthly Notices, vol. 202, Jan. 1983, p. 241-248. Research supported by the Science and Engineering Research Council of England. (MNRAS Homepage)
Publication Date:
01/1983
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
ASTRONOMICAL MAPS, GALACTIC STRUCTURE, INFRARED ASTRONOMY, PECULIAR GALAXIES, RADIO GALAXIES, SPECTRAL ENERGY DISTRIBUTION, ASTROMETRY, BRIGHTNESS, COSMIC DUST, ELLIPTICAL GALAXIES, GALACTIC NUCLEI, RADII, SURFACE PROPERTIES
Bibliographic Code:
1983MNRAS.202..241A

Abstract

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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