Galaxy Zoo: morphologies derived from visual inspection of galaxies from the Sloan Digital Sky Survey

@article{Lintott2008GalaxyZM,
  title={Galaxy Zoo: morphologies derived from visual inspection of galaxies from the Sloan Digital Sky Survey},
  author={Chris J. Lintott and Kevin Schawinski and An{\vz}e Slosar and Kate R. Land and Steven Bamford and Daniel Thomas and M. Jordan Raddick and Robert C. Nichol and Alexander S. Szalay and Daniel Andreescu and P. G. Murray and Jan van den Berg},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2008},
  volume={389},
  pages={1179-1189}
}
In order to understand the formation and subsequent evolution of galaxies one must first distinguish between the two main morphological classes of massive systems: spirals and early-type systems. This paper introduces a project, Galaxy Zoo, which provides visual morphological classifications for nearly one million galaxies, extracted from the Sloan Digital Sky Survey (SDSS). This achievement was made possible by inviting the general public to visually inspect and classify these galaxies via the… 
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