NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2018-12-15 T02:14:46 PST
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For refcode 2009ApJS..183..214M:
Retrieve 542 NED objects in this reference.
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NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
2009ApJS..183..214M The Arecibo Legacy Fast Alfa Survey. VIII. H I Source Catalog of the Anti-Virgo Region at delta = +25^degree^ Martin, Ann M.; Giovanelli, Riccardo; Haynes, Martha P.; Saintonge, Amelie; Hoffman, G. Lyle; Kent, Brian R.; Stierwalt, Sabrina Abstract. We present a fourth catalog of H I sources from the Arecibo Legacy Fast ALFA (ALFALFA) Survey. We report 541 detections over 136 deg^2^, within the region of the sky having 22^h^ < {alpha} < 03^h^ and 24^degree^ < delta < 26^degree^. This complements a previous catalog in the region 26^degree^ < delta < 28^degree^. We present here the detections falling into three classes: (1) extragalactic sources with signal-to-noise ratio (S/N)>6.5, where the reliability of the catalog is better than 95%; (2) extragalactic sources 5.0 < S/N < 6.5 and a previously measured optical redshift that corroborates our detection; or (3) High Velocity Clouds (HVCs), or subcomponents of such clouds, in the periphery of the Milky Way. Of the 541 objects presented here, 90 are associated with HVCs, while the remaining 451 are identified as extragalactic objects. Optical counterparts have been matched with all but one of the extragalactic objects. Key words: catalogs; galaxies: distances and redshifts; galaxies: photometry; galaxies: spiral; radio lines: galaxies; surveys
Retrieve 542 NED objects in this reference.
Please click here for ADS abstract

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