Galaxy Zoo 1 : Data Release of Morphological Classifications for nearly 900,000 galaxies

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. The data are now publicly available and full catalogues can be downloaded in electronic format from http://data.galaxyzoo.org.

Accepted by MNRAS, 14 pages. Updated to match final version; problem with table 7 header fixed. Full tables available at http://data.galaxyzoo.org

References in corpus (6)

• Galaxy Zoo: the dependence of morphology and colour on environment
• The Fundamental Properties of Galaxies and a New Galaxy Classification System
• A Catalogue of Morphologically Classified Galaxies from the Sloan Digital Sky Survey: North Equatorial Region
• Galaxy Zoo: The large-scale spin statistics of spiral galaxies in the Sloan Digital Sky Survey
• HD 17156b: A Transiting Planet with a 21.2 Day Period and an Eccentric Orbit
• Galaxy Zoo: Chiral correlation function of galaxy spins

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