Galaxy Zoo and ALFALFA: atomic gas and the regulation of star formation in barred disc galaxies†

@article{Masters2012GalaxyZA,
  title={Galaxy Zoo and ALFALFA: atomic gas and the regulation of star formation in barred disc galaxies†},
  author={Karen L. Masters and Robert C. Nichol and Martha P. Haynes and William C. Keel and Chris J. Lintott and Brooke D. Simmons and Ramin A. Skibba and Steven Bamford and Riccardo Giovanelli and Kevin Schawinski},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2012},
  volume={424},
  pages={2180-2192}
}
We study the observed correlation between atomic gas content and the likelihood of hosting a large-scale bar in a sample of 2090 disc galaxies. Such a test has never been done before on this scale. We use data on morphologies from the Galaxy Zoo project and information on the galaxies' H I content from the Arecibo Legacy Fast Arecibo L-band Feed Array (ALFALFA) blind H I survey. Our main result is that the bar fraction is significantly lower among gas-rich disc galaxies than gas-poor ones. This… 

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