J/AJ/135/588ivo://CDS.VizieR/J/AJ/135/588doi:10.26093/cds/vizier.51350588CDSSaintonge A.Giovanelli R.Haynes M.P.Hoffman G.L.Kent B.R.,Martin A.M.Stierwalt S.Brosch N.2017-12-05T05:10:45Z2009-09-06T12:37:41ZCDS support team

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

cds-question@unistra.frsurveysh-i-line-emissionradio-galaxiesastronomical-object-identificationWe present a second catalog of HI sources detected in the Arecibo Legacy Fast ALFA Survey. We report 488 detections over 135deg^2^, within the region of the sky having 22<RA<03 and +26<DE<+28. We present here the detections that have either (a) S/N>6.5, where the reliability of the catalog is better than 95% or (b) 5.0<S/N<6.5 and a previously measured redshift that corroborates our detection. Of the 488 objects presented here, 49 are high-velocity clouds or clumps thereof with negative heliocentric recession velocities. These clouds are mostly very compact and isolated, while some of them are associated with large features such as Wright's Cloud or the northern extension of the Magellanic Stream. The remaining 439 candidate detections are identified as extragalactic objects and have all been matched with optical counterparts. Five of the six galaxies detected with M_HI_<10^7.5^ solMass are satellites of either the NGC672/IC1727 nearby galaxy pair or their neighboring dwarf irregular galaxy NGC784. The data of this catalog release include a slice through the Pisces-Perseus foreground void, a large nearby underdensity of galaxies. We report no detections within the void, where our catalog is complete for systems with HI masses of 10^8^M_{sun}_.2008AJ....135..588Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/135/588CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/77 : HI spectral properties of galaxies (AGC) (Springob+, 2005)VIII/73 : HI Parkes All Sky Survey Catalogue (HIPASS) (Meyer+, 2004)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/136/713 : Arecibo legacy fast ALFA survey. VI. (Kent+, 2008)J/MNRAS/357/819 : Colours and HI line observations in Virgo (Sabatini+, 2005)J/AJ/113/905 : HI observations of galaxies (Pantoja+ 1997)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/AJ/135/588https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/135/588http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/135/588https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/135/588https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/135/588http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/135/588GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/135/588/table1 (HI Candidate Detections)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/135/588/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/135/588/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/135/588/table1?GETtext/xml+votable180.050000true0.01541726.0155560.005555555555555556Cone search capability for table J/AJ/135/588/table2 (Detections in the NGC672 and NGC784 Groups)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/135/588/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/135/588/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/135/588/table2?GETtext/xml+votable180.050000true25.27666727.31750.005555555555555556Cone search capability for table J/AJ/135/588/table3 (Detections of High Velocity Clouds (HVCs) Previously Reported)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/135/588/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/135/588/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/135/588/table3?GETtext/xml+votable180.050000true331.526.21670.0055555555555555565/225 226 529 530 546 3345 4990 5053 5069 5070 5073 5074 5089 5090 6/733 734 735 749 751 753 754 755 756 757 759 760 762 763 764 813 814 815 817 818 819 822 824 825 899 908 928 2077 2079 2093 2095 2097 2100 2101 2102 2104 2105 2107 2108 2124 2128 2130 2131 2144 2177 2179 2181 2183 2188 2189 2192 2208 13343 13359 13362 13363 13364 13365 13366 13368 13370 13372 13377 13378 13379 13385 13387 13408 13441 13442 13443 13445 13449 13450 13451 13456 19933 19934 19935 19951 19953 19954 19955 19957 19958 19959 19964 20189 20190 20191 20206 20207 20209 20217 20218 20219 20220 20253 20254 20255 20270 20271 20274 20275 20284 20291 20304 20320 20353 20354 20355 20364 20368 20384https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/135/588?format=asciiRadiodefaultJ/AJ/135/588/table1HI Candidate DetectionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintgSimbad column added by the CDSmeta.ref.urlcharALFALFA2Catalog entry number (2-NNN)meta.id;meta.mainintAGCArecibo General Catalog number (1)meta.idintprimarySpGet Image and spectrum from Arecibo (Cornell Univ.)meta.ref.urlcharRAJ2000HI Hour of Right Ascension (J2000) (2)pos.eq.ra;meta.mainDEJ2000HI Degree of Declination (J2000) (2)pos.eq.dec;meta.mainRAO? Optical Right Ascension (J2000) (3)pos.eq.ranullableDEO? Optical Declination (J2000) (3)pos.eq.decnullableczHeliocentric velocity of the HI source (4)km/sspect.dopplerVeloc;em.line.HIintW50Velocity width at 50% level (5)km/sspect.line.widthinte_W50Estimated error in W50km/sstat.errorintFcIntegrated flux density (6)Jy.km/sphot.flux.densityfloate_FcEstimated error in FcJy.km/sstat.errorfloatS/NSignal-to-noise ratio of detection (7)stat.snrfloatrmsNoise figure of spatially integrated spectral profile (8)mJymeta.bib.figfloatDist? Adopted distance (9)Mpcpos.distance;pos.heliocentricfloatnullablelogM? Log of HI mass (10)log(solMass)phys.massfloatnullableQualSource quality code (11)meta.codeintNoteAdditional comments for sourcemeta.notecharJ/AJ/135/588/table2Detections in the NGC672 and NGC784 GroupsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAGCAGC catalog identification numbermeta.id;meta.mainintONameNGC, IC or [KK98a] numbermeta.idcharRAJ2000HI Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000HI Degree of Declination (J2000)pos.eq.dec;meta.mainczHeliocentric recession velocitykm/sspect.dopplerVeloc;pos.heliocentricintW50Velocity width at 50% levelkm/sspect.line.widthintFcIntegrated flux densityJy.km/sphot.flux.densityfloatDist? Calculated distance using the peculiar velocity modelMpcpos.distance;pos.heliocentricfloatnullableDistl? Distance from litterature (1)Mpcpos.distance;pos.heliocentricfloatnullablen_Distl[a] Remark on Distance (2)meta.notecharlogM? Log of HI mass estimated from Distlog(solMass)phys.massfloatnullablelogMlLog of HI mass estimated from Distllog(solMass)phys.massfloatn_logMl[b] means HI mass of the object, if at the distance of NGC784 of 5.0Mpcmeta.notecharGroupGroup Membershipmeta.codecharJ/AJ/135/588/table3Detections of High Velocity Clouds (HVCs) Previously ReportedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameHVC catalogs identificationmeta.id;meta.maincharCatCatalog reference (1)meta.id;meta.datasetcharRAJ2000HI Hour of Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000HI Degree of Declination (J2000)pos.eq.dec;meta.mainv(LSR)Local Standard of Rest (LSR) velocitykm/sphys.veloc;pos.lsrintF? Integrated flux densityJy.km/sphot.flux.densityintnullableALFALFAYes or No for sources in ALFALFAmeta.codechar