The 6dF galaxy survey: Fundamental Plane data

Lachlan A. Campbell*, John R. Lucey, Matthew Colless, D. Heath Jones, Christopher M. Springob, Christina Magoulas, Robert N. Proctor, Jeremy R. Mould, Mike A. Read, Sarah Brough, Tom Jarrett, Alex I. Merson, Philip Lah, Florian Beutler, Michelle E. Cluver, Quentin A. Parker

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    47 Citations (Scopus)

    Abstract

    We report the 6dFGS Fundamental Plane (6dFGSv) catalogue that is used to estimate distances and peculiar velocities for nearly 9000 early-type galaxies in the local (z < 0.055) universe. Velocity dispersions are derived by cross-correlation from 6dF V-band spectra with typical S/N of 12.9Å-1 for a sample of 11 315 galaxies; the median velocity dispersion is 163 km s-1 and the median measurement error is 12.9 per cent. The photometric Fundamental Plane (FP) parameters (effective radii and surface brightnesses) are determined from the JHK 2MASS images for 11 102 galaxies. Comparison of the independent J-and K-band measurements implies that the average uncertainty in XFP, the combined photometric parameter that enters the FP, is 0.013 dex (3 per cent) for each band. Visual classification of morphologies was used to select a sample of nearly 9000 early-type galaxies that form 6dFGSv. This catalogue has been used to study the effects of stellar populations on galaxy scaling relations, to investigate the variation of the FP with environment and galaxy morphology, to explore trends in stellar populations through, along and across the FP, and to map and analyse the local peculiar velocity field.

    Original languageEnglish
    Pages (from-to)1231-1251
    Number of pages21
    JournalMonthly Notices of the Royal Astronomical Society
    Volume443
    Issue number2
    DOIs
    Publication statusPublished - Apr 2014

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