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Hans Publishers, Astronomy & Astrophysics, (598), p. A32

DOI: 10.1051/0004-6361/201629525

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Two-dimensional multi-component photometric decomposition of CALIFA galaxies

Journal article published in 2017 by J. Méndez-Abreu, T. Ruiz-Lara, L. Sánchez-Menguiano, A. de Lorenzo-Cáceres, L. Costantin, C. Catalán-Torrecilla, E. Florido, J. A. L. Aguerri, J. Bland-Hawthorn, E. M. Corsini ORCID, R. J. Dettmar ORCID, Lluís Galbany ORCID, R. García-Benito, R. A. Marino, I. Márquez and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We present a two-dimensional multi-component photometric decomposition of 404 galaxies from the Calar Alto Legacy Integral Field Area data release 3 (CALIFA-DR3). They represent all possible galaxies with no clear signs of interaction and not strongly inclined in the final CALIFA data release. Galaxies are modelled in the g, r, and i Sloan Digital Sky Survey (SDSS) images including, when appropriate, a nuclear point source, bulge, bar, and an exponential or broken disc component. We use a human-supervised approach to determine the optimal number of structures to be included in the fit. The dataset, including the photometric parameters of the CALIFA sample, is released together with statistical errors and a visual analysis of the quality of each fit. The analysis of the photometric components reveals a clear segregation of the structural composition of galaxies with stellar mass. At high masses (log (M⋆/M⊙) > 11), the galaxy population is dominated by galaxies modelled with a single Sérsic or a bulge+disc with a bulge-to- total (B/T) luminosity ratio B/T > 0.2. At intermediate masses (9.5