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Photometric analysis of Abell 1689

Published online by Cambridge University Press:  17 July 2013

Elena Dalla Bontà ,
Roger L. Davies ,
Ryan C. W. Houghton ,
Francesco D'Eugenio ,
Enrico M. Corsini  and
Jairo Méndez-Abreu
Elena Dalla Bontà
Affiliation:
Dipartimento di Fisica e Astronomia “G. Galilei”, Università di Padova, Padova, Italy email: [email protected] INAF Osservatorio Astronomico di Padova, Padova, Italy
Roger L. Davies
Affiliation:
Sub-department of Astrophysics, Department of Physics, University of Oxford, Oxford, UK
Ryan C. W. Houghton
Affiliation:
Sub-department of Astrophysics, Department of Physics, University of Oxford, Oxford, UK
Francesco D'Eugenio
Affiliation:
Sub-department of Astrophysics, Department of Physics, University of Oxford, Oxford, UK
Enrico M. Corsini
Affiliation:
Dipartimento di Fisica e Astronomia “G. Galilei”, Università di Padova, Padova, Italy email: [email protected] INAF Osservatorio Astronomico di Padova, Padova, Italy
Jairo Méndez-Abreu
Affiliation:
Instituto Astrofísico de Canarias, La Laguna, Spain
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Abstract

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We carried out a photometric analysis of a sample of early-type galaxies in Abell~1689 at z = 0.183, using HST/ACS archive images in the rest-frame V band. We performed a two-dimensional photometric decomposition of each galaxy surface-brightness distribution using the GASP2D fitting algorithm (Méndez-Abreu et al. 2008). We adopted both a Sérsic and de Vaucouleurs law. S0 galaxies were analysed also taking into account a disc component described by an exponential law. The derived photometric parameters, together with the ones previously obtained with the curve of growth method (Houghton et al. 2012), will be used to analyse the Fundamental Plane of Abell 1689 and quantify how it is affected by the use of different decomposition techniques (Dalla Bontà et al. 2013, in preparation). The stellar velocity dispersions of the sample galaxies were derived by using GEMINI-N/GMOS and VLT/FLAMES (D'Eugenio et al. 2013) spectroscopic data.

Keywords

galaxies: clusters: individual: Abell 1689galaxies: elliptical and lenticularcD
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S295: The intriguing life of massive galaxies , August 2012 , pp. 230
Copyright
Copyright © International Astronomical Union 2013 

References

D'Eugenio, F., Houghton, R. C. W., Davies, R. L., & Dalla Bontà, E. 2013, MNRAS, 429, 1258CrossRefGoogle Scholar
Houghton, R. C. W., Davies, R. L., Dalla Bontà, E., & Masters, R. 2012, MNRAS, 423, 256Google Scholar
Méndez-Abreu, J., Aguerri, J. A. L., Corsini, E. M., & Simonneau, E. 2008, A&A, 478, 353Google Scholar