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

Chris J. Lintott, Kevin Schawinski, Steven P. Bamford, Anze Slosar, Kate Land, Daniel Georg Thomas, Edward M. Edmondson, Karen Masters, Robert C. Nichol, M. Jordan Raddick, Alex Szalay, Dan Andreescu, Phil Murray, Jan Vandenberg

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Abstract

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
Original languageEnglish
Pages (from-to)166-178
JournalMonthly Notices of the Royal Astronomical Society
Volume410
Issue number1
DOIs
Publication statusPublished - 1 Jan 2011

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