J/ApJ/758/44ivo://CDS.VizieR/J/ApJ/758/44doi:10.26093/cds/vizier.17580044CDSSaul D.R.Peek J.E.G.Grcevich J.Putman M.E.Douglas K.A.,Korpela E.J.Stanimirovic S.Heiles C.Gibson S.J.Lee M.Begum A.,Brown A.R.H.Burkhart B.Hamden E.T.Pingel N.M.Tonnesen S.2017-10-03T05:12:28Z2014-07-31T14:44:42ZCDS support team

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

cds-question@unistra.frh-i-line-emissiondiffuse-molecular-cloudssurveysWe present a catalog of 1964 isolated, compact neutral hydrogen clouds from the Galactic Arecibo L-Band Feed Array Survey Data Release One. The clouds were identified by a custom machine-vision algorithm utilizing the difference of Gaussian kernels to search for clouds smaller than 20'. The clouds have velocities typically between |V_LSR_|=20 and 400km/s, line widths of 2.5-35km/s, and column densities ranging from 1 to 35x10^18^/cm2. The distances to the clouds in this catalog may cover several orders of magnitude, so the masses may range from less than a solar mass for clouds within the Galactic disk, to greater than 10^4^M_{sun}_for high-velocity clouds (HVCs) at the tip of the Magellanic Stream. To search for trends, we separate the catalog into five populations based on position, velocity, and line width: HVCs; galaxy candidates; cold low-velocity clouds (LVCs); warm, low positive-velocity clouds in the third Galactic quadrant; and the remaining warm LVCs. The observed HVCs are found to be associated with previously identified HVC complexes. We do not observe a large population of isolated clouds at high velocities as some models predict. We see evidence for distinct histories at low velocities in detecting populations of clouds corotating with the Galactic disk and a set of clouds that is not corotating.2012ApJ...758...44Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/758/44CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/76 : Leiden/Argentine/Bonn (LAB) Survey of Galactic HI (Kalberla+ 2005)VI/128 : Log of CGPS exposures (Taylor+, 2003-)J/ApJS/209/12 : High-velocity clouds from GASS. I. (Moss+, 2013)J/AJ/142/170 : ALFALFA survey: {alpha}.40 HI source (Haynes+, 2011)J/ApJ/722/367 : HI clouds in Quadrant I of the Milky Way (Ford+, 2010)J/AJ/138/338 : Arecibo Legacy Fast ALFA Survey. IX. (Stierwalt+, 2009)J/ApJ/688/290 : GASS HI survey of the lower halo (Ford+, 2008)J/AJ/131/1501 : Intermediate-velocity clouds in the CGPS (Kerton+, 2006)J/ApJ/626/887 : HI clouds in Southern Galactic Plane Survey (Kavars+, 2005)J/ApJ/626/195 : HI self-absorption (HISA) survey in the CGPS (Gibson+, 2005)J/ApJS/140/331 : High-velocity HI observations at 21cm (Lockman+, 2002)J/A+A/391/159 : A search for Compact High-Velocity Clouds (De Heij+, 2002)J/AJ/123/873 : HIPASS high-velocity clouds (Putman+, 2002)J/AJ/122/3155 : Peculiar HI cloud near galactic plane (Higgs+, 2001)J/ApJS/136/463 : Distances and metallicities of HVCs and IVCs (Wakker, 2001)J/ApJS/79/77 : Bell Lab. H I Survey - High Velocity Clouds (Stark+ 1992)http://purcell.ssl.berkeley.edu/ : GALFA HI Data Archivehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/758/44https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/758/44http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/758/44https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/758/44https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/758/44http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/758/44GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/758/44/table1 (DR1 GALFA-HI cloud catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/758/44/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/758/44/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/758/44/table1?GETtext/xml+votable180.050000true0.954234.350.0055555555555555565/18 553 1306 2259 3141 3162 3185 4734 4817 4987 5828 6097 7881 6/34 41 46 48 49 53 55 61 68 70 76 87 91 93 95 97 101 103 104 105 109 112 114 118 120 127 129 131 133 134 150 154 155 156 157 161 163 167 169 171 172 173 175 176 177 178 184 192 196 199 203 207 208 210 211 213 214 217 218 220 224 226 229 231 241 242 248 259 270 273 275 284 292 293 295 296 298 299 303 307 342 343 348 421 423 437 440 453 455 460 471 474 479 483 484 485 495 499 504 512 513 514 516 544 545 555 558 577 615 670 694 704 706 713 714 716 723 733 745 763 766 771 774 777 780 782 785 786 791 798 799 804 810 811 826 836 855 879 900 911 914 921 923 924 925 932 933 941 942 943 952 953 958 960 963 968 970 971 973 975 980 982 987 995 996 1001 1002 1005 1008 1010 1031 1038 1041 1042 1049 1063 1070 1073 1078 1080 1082 1119 1153 1157 1160 1165 1168 1170 1174 1184 1194 1196 1204 1207 1214 1239 1256 1258 1284 1298 1310 1408 1410 1541 1542 1548 1554 1556 1561 1562 1563 1564 1573 2050 2052 2058 2061 2063 2073 2080 2087 2089 2090 2097 2107 2126 2131 2137 2141 2152 2157 2161 2168 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27714 27719 27720 27746 27777 27778 27780 27782 27783 27785 27786 27787 27791 27793 27800 27802 27806 27809 27942 27944 27945 27972 28033 28034 28111 28121 28122 28124 28138 28161 28162 28171 28175 28177 28205 28210 28224 28226 28288 28377 28380 28395 28398 28411 28440 28447 28453 28454 28455 28460 28461 28464 28466 28493 28520 28532 28536 28545 28555 28557 28566 28569 28570 28580 28584 28587 28592 28596 31145 31148 31341 31354 31359 31385 31424 31427 31429 31430 31431 31441 31442 31444 31452 31453 31454 31463 31471 31474 31475 31477 31480 31482 31483 31501 31503 31511 31512 31534 31535 31538 31539 31540 31546 31547 31619 31621 31622 31623 31624 31626 31627 31719 31726https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/758/44?format=asciiRadiodefaultJ/ApJ/758/44/table1DR1 GALFA-HI cloud catalogGLONGalactic longitudedegpos.galactic.lonrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDCloud identifier (DDD.d+DD.d+VVV) (1)meta.id;meta.maincharRAJ2000[0/23] Hour of Right Ascension (J2000) (2)pos.eq.ra;meta.mainDEJ2000[0/37] Degree of Declination (J2000) (2)pos.eq.dec;meta.mainGLATGalactic latitudedegpos.galactic.latfloatSig[6/276] Significance of the cloud (3)stat.fit.goodnessfloatSize[2.3/20.5] Angular FWHM of cloud (4)arcminphys.angSizefloatVLSR[-448/615] Local Standard of Rest velocity of the peak of the fit to the average spectrumkm/sphys.veloc;pos.lsrfloatVGSRGalactic Standard of Rest velocity (5)km/sphys.veloc;pos.galactocentricfloatDelV[1.7/82.3] FWHM in velocity of the fit to the average spectrumkm/sstat.fit.param;meta.modelled;stat.meanfloatTp[0/11.5] Peak brightness temperature at 1420MHz after Galactic subtractionKphys.temperature;stat.maxfloatNHI[0/197] Maximum HI column density (6)1e+18cm**-2phys.columnDensityintf_NHI[*] NHI is a lower limit (7)meta.codecharStot[0.6/118] Total HI flux of cloud (1420MHz) (8)Jy.km/sphot.fluxfloatPopCloud population classification (9)meta.idcharSimbadSimbad column added by the CDSmeta.ref.urlchar