VizieR Online Data Catalog: ALFALFA extragalactic HI source catalog (Haynes+, 2018)

The Arecibo Legacy Fast ALFA (ALFALFA) Survey used the seven-horn Arecibo L-band Feed Array (ALFA) to map nearly 7000deg² of high Galactic latitude sky accessible to the Arecibo telescope over ~4400 nighttime hours between 2005 and 2011.

As a complement to Jones+ (2018MNRAS.477....2J), which presents the derived HI mass function (HIMF) and its dependence on the local environment, this paper presents the extragalactic HI catalog extracted from the completed ALFALFA survey. Because of the overlapping nature of the drift-scan survey and improved availability of the public optical imaging used to identify optical counterparts (OCs) of ALFALFA HI sources, this catalog, presented in Table 2, supersedes and replaces previous releases (Giovanelli+ 2007, J/AJ/133/2569 ; Kent+ 2008, J/AJ/136/713 ; Saintonge+ 2008, J/AJ/135/588 ; Martin+ 2009, J/ApJS/183/214 ; Stierwalt+ 2009, J/AJ/138/338 and Haynes+ 2011, J/AJ/142/170).

In addition to the catalog of ALFALFA HI line detections, nine sources are identified with OH megamasers (OHMs), and 10 are flagged as being OHM candidates.

(3 data files).