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The Arecibo Legacy Fast ALFA Survey: The α.40 H I Source Catalog, Its Characteristics and Their Impact on the Derivation of the H I Mass Function
The Astronomical Journal
  • Martha P. Haynes, Cornell University
  • Riccardo Giovanelli, Cornell University
  • Ann M. Martin, Cornell University
  • Kelley M. Hess, University of Wisconsin-Madison
  • Amelie Saintonge, Max Planck Institute for Extraterrestrial Physics, Germany
  • Elizabeth A. K. Adams, Cornell University
  • Gregory Hallenbeck, Cornell University
  • G. Lyle Hoffman, Lafayette College
  • Shan Huang, Cornell University
  • Brian R. Kent, National Radio Astronomy Observatory
  • Rebecca A. Koopman, Union College
  • Emmanouil Papastergis, Cornell University
  • Sabrina Stierwalt, California Institute of Technology
  • Thomas J. Balonek, Colgate University
  • David W. Craig, West Texas A&M University
  • Sarah J.U. Higdon, Georgia Southern Universtiy
  • David A. Kornreich, Humboldt State Unlversity, Arcata, CA
  • Jeffrey R. Miller, St. Lawrence University
  • Aileen A. O'Donoghue, St. Lawrence University
  • Ronald P. Olowin, St. Mary's College of California
  • Jessica L. Rosenberg, George Mason University
  • Kristine Spekkens, Royal Military College of Canada
  • Parker Troischt, Hartwick College
  • Eric M. Wilcots, University of Wisconsin-Madison
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We present a current catalog of 21?cm H I line sources extracted from the Arecibo Legacy Fast Arecibo L-band Feed Array (ALFALFA) survey over ~2800?deg2 of sky: the ?.40 catalog. Covering 40% of the final survey area, the ?.40 catalog contains 15,855 sources in the regions 07h30m < R.A. < 16h30m, +04? < decl.z < 0.25. A detailed analysis is presented of the completeness, width-dependent sensitivity function and bias inherent of the ?.40 catalog. The impact of survey selection, distance errors, current volume coverage, and local large-scale structure on the derivation of the H I mass function is assessed. While ?.40 does not yet provide a completely representative sampling of cosmological volume, derivations of the H I mass function using future data releases from ALFALFA will further improve both statistical and systematic uncertainties.

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Citation Information
Martha P. Haynes, Riccardo Giovanelli, Ann M. Martin, Kelley M. Hess, et al.. "The Arecibo Legacy Fast ALFA Survey: The α.40 H I Source Catalog, Its Characteristics and Their Impact on the Derivation of the H I Mass Function" The Astronomical Journal Vol. 142 Iss. 5 (2011) p. 1 - 62
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