Galaxy Zoo 1: data release of morphological classifications for nearly 900 000 galaxies★

Morphology is a powerful indicator of a galaxy's dynamical and merger history. It is strongly correlated with many physical parameters, including mass, star formation history and the distribution of mass. The Galaxy Zoo project collected simple morphological classifications of nearly 900 000 galaxies drawn from the Sloan Digital Sky Survey, contributed by hundreds of thousands of volunteers. This large number of classifications allows us to exclude classifier error, and measure the influence of subtle biases inherent in morphological classification. This paper presents the data collected by the project, alongside measures of classification accuracy and bias. The data are now publicly available and full…

• NS
  National Science Foundation

  Awards: DE-AC02-98CH10886, NAS8-03060
• SI
  Smithsonian Institution

  Award: NAS8-03060
• UD
  U.S. Department of Energy

  Awards: AC02-98CH10886, DE-AC02, DE-AC02-
• NA
  National Aeronautics and Space Administration

  Award: NAS8-03060
• AP
  Alfred P. Sloan Foundation
• JH
  Johns Hopkins University
• CW
  Case Western Reserve University
• DU
  Drexel University
• UB
  Universität Basel
• UO
  University of Portsmouth
• GF
  Gruber Foundation
• M
  Max-Planck-Gesellschaft
• SE
  South East Physics Network
• SA
  Smithsonian Astrophysical Observatory

  Awards: 03060, NAS8-03060
• SA
  Science and Technology Facilities Council

  Awards: ST/H007156/1, ST/F002335/1
• F
  Fermilab