... NTT

European Southern Observatory, program ID 65.N-0318(A).

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... Alto

German-Spanish Astronomical Center, Calar Alto, operated by the Max-Planck-Institute for Astronomy, Heidelberg, jointly with the Spanish National Commission for Astronomy.

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... MIDAS

Munich Image data Analysis System, provided by the European Southern Observatory (ESO).

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... Manual

Issue 1.2, available online at http://www.eso.org

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... catalogue

http://www.ipac.caltech.edu/2mass/

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... exponent

For consistency with, e.g., Caon et al. (1993) and C03 we define here the Sérsic shape parameter as $\eta$, i.e. the reciprocal exponent in Eq. (8). Note that in other studies (Cellone et al. 1994; Young & Currie 1994, 1995; P96a) the Sérsic shape parameter is referred to as 1/$\eta$.

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