Show simple item record

Files in this item


Item metadata

dc.contributor.authorMendez-Abreu, J.
dc.contributor.authorRuiz-Lara, T.
dc.contributor.authorSanchez-Menguiano, L.
dc.contributor.authorDe Lorenzo-Caceres Rodriguez, Adriana
dc.contributor.authorCostantin, L.
dc.contributor.authorCatalan-Torrecilla, C.
dc.contributor.authorFlorido, E.
dc.contributor.authorAguerri, J. A. L.
dc.contributor.authorBland-Hawthorn, J.
dc.contributor.authorCorsini, E. M.
dc.contributor.authorDettmar, R. J.
dc.contributor.authorGalbany, L.
dc.contributor.authorGarcia-Benito, R.
dc.contributor.authorMarino, R. A.
dc.contributor.authorMarquez, I.
dc.contributor.authorOrtega-Minakata, R. A.
dc.contributor.authorPapaderos, P.
dc.contributor.authorSanchez, S. F.
dc.contributor.authorSanchez-Blazquez, P.
dc.contributor.authorSpekkens, K.
dc.contributor.authorvan de Ven, G.
dc.contributor.authorWild, V.
dc.contributor.authorZiegler, B.
dc.identifier.citationMendez-Abreu , J , Ruiz-Lara , T , Sanchez-Menguiano , L , De Lorenzo-Caceres Rodriguez , A , Costantin , L , Catalan-Torrecilla , C , Florido , E , Aguerri , J A L , Bland-Hawthorn , J , Corsini , E M , Dettmar , R J , Galbany , L , Garcia-Benito , R , Marino , R A , Marquez , I , Ortega-Minakata , R A , Papaderos , P , Sanchez , S F , Sanchez-Blazquez , P , Spekkens , K , van de Ven , G , Wild , V & Ziegler , B 2017 , ' Two-dimensional multi-component photometric decomposition of CALIFA galaxies ' , Astronomy & Astrophysics , vol. 598 , A32 .
dc.identifier.otherPURE: 247062043
dc.identifier.otherPURE UUID: 0926977a-1690-4195-957f-fde80552e750
dc.identifier.otherBibCode: 2016arXiv161005324M
dc.identifier.otherScopus: 85010930856
dc.identifier.otherWOS: 000394465000032
dc.description.abstractWe 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 < log(M⋆/M⊙) < 11), galaxies described with bulge+disc but B/T < 0.2 are preponderant, whereas, at the low mass end (log(M⋆/M⊙)< 9.5), the prevailing population is constituted by galaxies modelled with either pure discs or nuclear point sources+discs (i.e., no discernible bulge). We obtain that 57% of the volume corrected sample of disc galaxies in the CALIFA sample host a bar. This bar fraction shows a significant drop with increasing galaxy mass in the range 9.5 < log(M⋆/M⊙) < 11.5. The analyses of the extended multi-component radial profile result in a volume-corrected distribution of 62%, 28%, and 10% for the so-called Type I (pure exponential), Type II (down-bending), and Type III (up-bending) disc profiles, respectively. These fractions are in discordance with previous findings. We argue that the different methodologies used to detect the breaks are the main cause for these differences.
dc.relation.ispartofAstronomy & Astrophysicsen
dc.rights© 2016, ESO. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at /
dc.subjectGalaxies: bulgesen
dc.subjectGalaxies: evolutionen
dc.subjectGalaxies: formationen
dc.subjectGalaxies: stellar contenten
dc.subjectGalaxies: structureen
dc.subjectGalaxies: photometryen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.titleTwo-dimensional multi-component photometric decomposition of CALIFA galaxiesen
dc.typeJournal articleen
dc.contributor.sponsorEuropean Research Councilen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.description.statusPeer revieweden

This item appears in the following Collection(s)

Show simple item record