Interloper bias in future large-scale structure surveys

  title={Interloper bias in future large-scale structure surveys},
  author={Anthony R. Pullen and Christopher M. Hirata and Olivier Dor{\'e} and Alvise Raccanelli},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
Next-generation spectroscopic surveys will map the large-scale structure of the observable universe, using emission line galaxies as tracers. While each survey will map the sky with a specific emission line, interloping emission lines can masquerade as the survey's intended emission line at different redshifts. Interloping lines from galaxies that are not removed can contaminate the power spectrum measurement, mixing correlations from various redshifts and diluting the true signal. We assess… Expand
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