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The Near-Infrared Surface Brightness Distribution of NGC 4696

Published online by Cambridge University Press:  05 March 2013

Pablo Arnalte Mur ,
Simon C. Ellis  and
Matthew Colless
Pablo Arnalte Mur*
Affiliation:
Anglo-Australian Observatory, Epping NSW 2121, Australia Facultat de Física, Universitat de València, 46100 Burjassot, València, Spain
Simon C. Ellis
Affiliation:
Anglo-Australian Observatory, Epping NSW 2121, Australia
Matthew Colless
Affiliation:
Anglo-Australian Observatory, Epping NSW 2121, Australia
*
CCorresponding author. Email: [email protected]
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Abstract

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We present H-band observations of the elliptical galaxy NGC 4696, the brightest member of the Centaurus cluster of galaxies. We have measured its light profile, using a two-dimensional fitting algorithm, out to a radius of 180 arcsec (37 h70−1 kpc). The profile is well described by a de Vaucouleurs law, with an effective radius of 35.3 ± 1.0 h70−1 kpc. There is no need for the extra free parameter allowed by a Sérsic law. Allowing for a variation of 0.3% in the sky level, the profile obtained is compatible with data from the Two-Micron All Sky Survey (2MASS). The profile shows no sign of either a truncation or an extended halo.

Keywords

galaxies: elliptical and lenticular, cDgalaxies: fundamental parametersgalaxies: halosgalaxies: individual (NGC 4696)galaxies: photometrygalaxies: structure
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 23 , Issue 1 , 2006 , pp. 33 - 37
Copyright
Copyright © Astronomical Society of Australia 2006

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