No Significant Evolution in the Bar Fraction in Large Disk Galaxies From z=1.8 to z=0.6

Details No Significant Evolution in the Bar Fraction in Large Disk Galaxies From z=1.8 to z=0.6 No Significant Evolution in the Bar Fraction in Large Disk Galaxies From z=1.8 to z=0.6

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21942906h&link_type=abstract

American Astronomical Society, AAS Meeting #219, #429.06

Astronomy and Astrophysics

Astronomy

Scientific paper

We use HST/WFC3 images from the CANDELS survey of GOODS-S and UDS to determine the evolution of the bar fraction of disk galaxies between redshifts 0.6 and 1.8. We include galaxies with masses between 1.6e10 and 1e11, redshifts between 0.6 and 2.2, H band apparent magnitude less than 24, Sersic index less than 3.5, ellipticity less than 0.5, and effective radius greater than 0.42''. We classify the sample visually to determine the morphology of each galaxy and if it has a bar. We find the completeness of our sample at z > 1 by artificially redshifting galaxies with z < 1 to 1 < z < 2.2. We find the bar fraction to be constant within error bars between redshifts 0.6 and 1.8.

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