The Near-Infrared Surface Brightness Distribution of NGC 4696

Publications of the Astronomical Society of Australia

Pablo Arnalte Mur¹ 

[1] Simon C. Ellis

关键词: galaxies: elliptical and lenticular;    cD;    galaxies: fundamental parameters;    galaxies: halos;    galaxies: individual (NGC 4696);    galaxies: photometry;    galaxies: structure;   

DOI  :  10.1071/AS05037

学科分类：天文学(综合)

来源: CSIRO

【 摘 要 】

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.

【 授权许可】

Unknown