The Near-infrared surface brightness distribution of NGC 4696

Pablo Arnalte Mur, Simon C. Ellis, Matthew Colless

Research output: Contribution to journalArticleResearchpeer-review

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.

LanguageEnglish
Pages33-37
Number of pages5
JournalPublications of the Astronomical Society of Australia
Volume23
Issue number1
DOIs
Publication statusPublished - 10 Apr 2006
Externally publishedYes

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brightness distribution
near infrared
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elliptical galaxies
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halos
galaxies
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distribution
parameter
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Cite this

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title = "The Near-infrared surface brightness distribution of NGC 4696",
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 S{\'e}rsic 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.",
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The Near-infrared surface brightness distribution of NGC 4696. / Mur, Pablo Arnalte; Ellis, Simon C.; Colless, Matthew.

In: Publications of the Astronomical Society of Australia, Vol. 23, No. 1, 10.04.2006, p. 33-37.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - The Near-infrared surface brightness distribution of NGC 4696

AU - Mur,Pablo Arnalte

AU - Ellis,Simon C.

AU - Colless,Matthew

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N2 - 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.

AB - 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.

KW - Galaxies: elliptical and lenticular, cD

KW - Galaxies: fundamental parameters

KW - Galaxies: halos

KW - Galaxies: individual (NGC 4696)

KW - Galaxies: photometry

KW - Galaxies: structure

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