J/ApJS/183/214ivo://CDS.VizieR/J/ApJS/183/214doi:10.26093/cds/vizier.21830214CDSMartin A.M.Giovanelli R.Haynes M.P.Saintonge A.Hoffman G.L.,Kent B.R.Stierwalt S.2010-03-26T03:18:58Z2010-03-26T04:10:21ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frsurveysh-i-line-emissionradio-galaxiesredshiftedWe present a fourth catalog of HI sources from the Arecibo Legacy Fast ALFA (ALFALFA) Survey. We report 541 detections over 136deg^2^, within the region of the sky having 22h<RA<03h and 24<DE<26{deg}. This complements a previous catalog in the region 26<DE<28{deg}. 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.2009ApJS..183..214Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/183/214CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/73 : HI Parkes All Sky Survey Catalogue (HIPASS) (Meyer+, 2004)VIII/77 : HI spectral properties of galaxies (Springob+, 2005)J/AJ/113/905 : HI observations of galaxies (Pantoja+ 1997)J/MNRAS/357/819 : Colours and HI line observations in Virgo (Sabatini+, 2005)J/AJ/130/2613 : The Arecibo Legacy Fast ALFA survey. II (Giovanelli+, 2005)J/AJ/133/2569 : Arecibo legacy fast ALFA survey III. (Giovanelli+, 2007)J/AJ/135/588 : Arecibo legacy fast ALFA survey V. (Saintonge+, 2008)http://arecibo.tc.cornell.edu/hiarchive : ALFALFA data accesshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/183/214https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/183/214http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/183/214https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/183/214https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/183/214http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/183/214GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/183/214/table1 (HI candidate detections)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/183/214/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/183/214/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/183/214/table1?GETtext/xml+votable180.050000true330.23083324.7527780.0055555555555555565/181 182 183 201 518 544 3337 4981 4982 4985 4986 5045 5046 5049 5050 5061 5066 5072 6/719 723 739 741 742 743 745 746 747 748 749 752 753 754 783 803 809 810 811 813 814 816 818 896 898 2063 2068 2070 2071 2077 2083 2085 2086 2087 2089 2090 2093 2096 2097 2098 2112 2113 2114 12756 12758 12759 13331 13333 13334 13335 13337 13338 13339 13340 13341 13342 13353 13354 13355 13356 13357 13358 13360 13361 13362 13376 13377 13440 13441 19839 19903 19919 19923 19932 19933 19934 19939 19948 19949 19950 19952 19953 19954 20095 20159 20179 20188 20189 20190 20205 20206 20208 20209 20239 20243 20248 20249 20251 20252 20253 20254 20259 20261 20262 20263 20268 20269 20270 20272 20274 20292 20352 20353 20354https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/183/214?format=asciiOpticalRadiodefaultJ/ApJS/183/214/table1HI candidate detectionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_ALFALFA4[*] * indicates additional comments provided in notes.dat filemeta.notecharALFALFA4[1/541] Catalog entry number, ALFALFA 4-NNN in Simbadmeta.id;meta.mainintAGCArecibo General Catalog numbermeta.idintRAJ2000HI Hour of Right Ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000HI Degree of Declination (J2000)pos.eq.dec;meta.mainRAO? Optical Hour of Right Ascension (J2000) (2)pos.eq.ranullableDEO? Optical Degree of Declination (J2000)pos.eq.decnullableczHI heliocentric velocity (3)km/sspect.dopplerVeloc;em.line.HIintW50Source line profile velocity width (4)km/sspect.line.widthinte_W50Uncertainty in W50 (5)km/sstat.errorintFcSource integrated flux density (6)Jy.km/sphot.flux.densityfloatS/NSignal-to-noise (7)stat.snrfloatrmsIntegrated spectral profile noise figure (8)mJymeta.bib.figfloatDist? Adopted distance (9)Mpcpos.distance;pos.heliocentricfloatnullablelogM? Log of HI mass (10)log(solMass)phys.massfloatnullableQualObject quality code (11)meta.codeintJ/ApJS/183/214/notesComments from section 3recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintALFALFA4Catalog entry numbermeta.id;meta.mainintNoteSection 3 commentmeta.notechar