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Cited by 678

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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

Open access
Haynes, Martha P., Giovanelli, Riccardo, Martin, Ann M., Hess, Kelley M., Saintonge, Amélie, Adams, Elizabeth A. K., Hallenbeck, Gregory, Hoffman, G. Lyle, Huang, Shan, Kent, Brian R., Koopmann, Rebecca A., Papastergis, Emmanouil, Stierwalt, Sabrina, Balonek, Thomas J., Craig, David W., Higdon, Sarah J. U., Kornreich, David A., Miller, Jeffrey R., O'Donoghue, Aileen A., Olowin, Ronald P., Rosenberg, Jessica L., Spekkens, Kristine, Troischt, Parker, Wilcots, Eric M.·2011·The Astronomical Journal

Abstract

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 deg 2 of sky: the α.40 catalog. Covering 40% of the final survey area, the α.40 catalog contains 15,855 sources in the regions 07 h 30 m < R.A. < 16 h 30 m , +04° < decl. <+16°, and +24° < decl. <+28° and 22 h < R.A. < 03 h , +14° < decl. <+16°, and +24° < decl. < + 32°. Of those, 15,041 are certainly extragalactic, yielding a source density of 5.3 galaxies per deg 2 , a factor of 29 improvement over the catalog extracted from the H i Parkes All-Sky Survey. In addition to the source centroid positions, H i line flux densities, recessional velocities, and line widths, the catalog includes the coordinates of the most probable optical counterpart of each H i line detection, and a separate compilation provides a cross-match to identifications given in the photometric and spectroscopic catalogs associated with the Sloan Digital Sky Survey Data Release 7. Fewer than 2% of the extragalactic H i line sources cannot be identified with a feasible optical counterpart; some of those may be rare OH megamasers at 0.16 < z < 0.25. A detailed analysis is presented of the completeness, width-dependent sensitivity function and bias inherent of the α.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 α.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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Metadata

Authors
Haynes, M. P., Giovanelli, R., Martin, A. M., Hess, K. M., Saintonge, A., Adams, E. A. K., Hallenbeck, G., Hoffman, G. L., Huang, S., Kent, B. R., Koopmann, R. A., Papastergis, E., Stierwalt, S., Balonek, T. J., Craig, D. W., Higdon, S. J. U., Kornreich, D. A., Miller, J. R., O'Donoghue, A. A., Olowin, R. P., Rosenberg, J. L., Spekkens, K., Troischt, P., & Wilcots, E. M.
Venue
The Astronomical Journal
Published
2011-10-17
Volume
142
Issue
5
Pages
170
ISSN
  • 0004-6256 (ISSN-L)
  • 1538-3881
OpenAlex
W1987522415
Cited by
678
References
29
FWCI
19.70
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: 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. https://app.cochat.ai/papers/10.1088/0004-6256/142/5/170
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Haynes, M. P., Giovanelli, R., Martin, A. M., Hess, K. M., Saintonge, A., Adams, E. A. K., Hallenbeck, G., Hoffman, G. L., Huang, S., Kent, B. R., Koopmann, R. A., Papastergis, E., Stierwalt, S., Balonek, T. J., Craig, D. W., Higdon, S. J. U., Kornreich, D. A., Miller, J. R., O'Donoghue, A. A., . . . Wilcots, E. M. (2011). 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. https://doi.org/10.1088/0004-6256/142/5/170

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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