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Galaxy Zoo: an independent look at the evolution of the bar fraction over the last eight billion years from HST-COSMOS★
2014
Monthly notices of the Royal Astronomical Society
We measure the redshift evolution of the bar fraction in a sample of 2380 visually selected disc galaxies found in Cosmic Evolution Survey (COSMOS) Hubble Space Telescope (HST) images. The visual classifications used to identify both the disc sample and to indicate the presence of stellar bars were provided by citizen scientists via the Galaxy Zoo: Hubble (GZH) project. We find that the overall bar fraction decreases by a factor of two, from 22+/-5% at z=0.4 (tlb = 4.2 Gyr) to 11+/-2% at z=1.0
doi:10.1093/mnras/stt2397
fatcat:5qzry5oqdbev3iihwas323eec4