Abstract
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 h 70 -1 kpc). The profile is well described by a de Vaucouleurs law, with an effective radius of 35.3 ± 1.0 h 70 -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.
Original language | English |
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Pages (from-to) | 33-37 |
Number of pages | 5 |
Journal | Publications of the Astronomical Society of Australia |
Volume | 23 |
Issue number | 1 |
DOIs | |
Publication status | Published - 10 Apr 2006 |
Externally published | Yes |
Keywords
- Galaxies: elliptical and lenticular, cD
- Galaxies: fundamental parameters
- Galaxies: halos
- Galaxies: individual (NGC 4696)
- Galaxies: photometry
- Galaxies: structure