Mathematics – Logic
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21543813p&link_type=abstract
American Astronomical Society, AAS Meeting #215, #438.13; Bulletin of the American Astronomical Society, Vol. 42, p.394
Mathematics
Logic
Scientific paper
Galaxy Zoo is a web-based collaborative effort examining Sloan Digital Sky Survey images. In order to make use of the large volume of data generated by SDSS, the task of morphological classification is distributed amongst numerous volunteers via the Galaxy Zoo website. In addition to single galaxy classification, comparative data is also collected through Galaxy Wars.
Galaxy Wars seeks to determine why some galaxies have more prominent spirals or bars than others. To avoid biases that naturally affect these visual comparisons, the sample is divided into groups of similar size, brightness, and distance. Volunteers are then asked to judge which of the two selected galaxies exhibits more prominent spiral or bar features. By means of this process, an aggregate ranking system is created.
In this poster, a time series visualization is used to understand the process in which galaxy classifications and feature prominence rankings are constructed. By representing galaxy location in an area-preserving projection, spatial relationships can be linked with both features and morphology. Additionally, the interface allows for exploration of redshift / spectral data and provides details on demand for any of the galaxies within the sample.
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