High-velocity clouds from GASS. I. J/ApJS/209/12 ivo://CDS.VizieR/J/ApJS/209/12 doi:10.26093/cds/vizier.22090012 CDS Moss V.A. McClure-Griffiths N.M. Murphy T. Pisano D.J. Kummerfeld J.K.,Curran J.R. 2017-10-09T13:34:17Z 2013-12-18T09:44:33Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr h-i-line-emission diffuse-molecular-clouds surveys astronomical-object-identification We present a catalog of high-velocity clouds (HVCs) from the Galactic All Sky Survey (GASS) of southern sky neutral hydrogen, which has 57mK sensitivity and 1 km/s velocity resolution and was obtained with the Parkes Telescope. Our catalog has been derived from the stray-radiation-corrected second release of GASS. We describe the data and our method of identifying HVCs and analyze the overall properties of the GASS population. We catalog a total of 1693 HVCs at declinations <0{deg}, including 1111 positive velocity HVCs and 582 negative velocity HVCs. Our catalog also includes 295 anomalous velocity clouds (AVCs). The cloud line-widths of our HVC population have a median FWHM of ~19 km/s, which is lower than that found in previous surveys. The completeness of our catalog is above 95% based on comparison with the HIPASS catalog of HVCs upon which we improve by an order of magnitude in spectral resolution. We find 758 new HVCs and AVCs with no HIPASS counterpart. The GASS catalog will shed unprecedented light on the distribution and kinematic structure of southern sky HVCs, as well as delve further into the cloud populations that make up the anomalous velocity gas of the Milky Way. 2013ApJS..209...12M https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/209/12 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to J/ApJ/722/367 : HI clouds in Quadrant I of the Milky Way (Ford+, 2010) J/ApJ/688/290 : GASS HI survey of the lower halo (Ford+, 2008) J/ApJ/626/887 : HI clouds in Southern Galactic Plane Survey (Kavars+, 2005) J/MNRAS/339/105 : Western Magellanic Bridge HI observations (Muller+, 2003) J/AJ/123/873 : HIPASS high-velocity clouds (Putman+, 2002) 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/122/3155 : Peculiar HI cloud near galactic plane (Higgs+, 2001) http://www.atnf.csiro.au/research/GASS/ : GASS home page https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/209/12 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/209/12 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/209/12 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/209/12 https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/209/12 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/209/12 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/ApJS/209/12/table2 (The GASS anomalous velocity clouds (AVCs) catalog) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/209/12/table2? https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/209/12/table2? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/209/12/table2? GET text/xml+votable 180.0 50000 true 267.007875 -28.907222 0.005555555555555556 Cone search capability for table J/ApJS/209/12/table1 (The GASS high-velocity clouds (HVCs) catalog) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/209/12/table1? https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/209/12/table1? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/209/12/table1? GET text/xml+votable 180.0 50000 true 273.908 -32.441667 0.005555555555555556 5/9478 11773 6/16386 16388 16392 16396 16403 16408 16429 16434 16446 16450 16451 16458 16462 16463 16466 16476 16487 16490 16506 16516 16531 16545 16554 16557 16574 16605 16609 16673 16719 16724 16735 16740 16756 16765 16773 16774 16782 16790 16813 16817 16821 16823 16826 16829 16856 16895 16897 16915 16937 16956 16961 16969 16970 16971 17001 17013 17058 17111 17114 17117 17126 17129 17136 17138 17139 17151 17165 17175 17177 17201 17240 17249 17265 17282 17291 17319 17326 17349 17352 17354 17358 17362 17385 17388 17389 17393 17415 17416 17432 17434 17440 17451 17461 17544 17568 17576 17582 17678 17688 17690 17733 17741 17742 17752 17797 17812 17926 18054 18449 18476 18478 18479 18481 18608 18615 18712 18728 18769 18824 18951 19022 19075 19087 19088 19106 20516 20526 20551 20567 20581 20607 20610 20676 20694 20703 20725 20738 20740 20746 20783 20822 20843 20878 20898 20903 20910 20911 20921 20932 20957 20978 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48763 48766 48776 48780 48785 48789 48798 48803 48805 48809 48810 48816 48817 48826 48830 48831 48838 48847 48869 48870 48873 48883 48894 48896 48910 48913 48917 48932 48938 48942 48946 48947 48948 48959 48962 48970 48973 48987 48998 49002 49003 49018 49019 49039 49050 49059 49061 49062 49066 49074 49076 49078 49079 49092 49093 49097 49103 49106 49114 49127 49128 49129 49131 49134 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/209/12?format=ascii Radio default J/ApJS/209/12/table2 The GASS anomalous velocity clouds (AVCs) catalog Flag [T,H0-9,CA,N -] Source flag(s) (10) meta.code.error char recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int Cat [GHAVC] Catalog name, "GHVC" or "GAVC" (1) meta.id;meta.table char Name HVC/AVC name GLLL.l+BB.b+VVV (1) meta.id char RAJ2000 Peak Hour of Right Ascension (J2000) pos.eq.ra;meta.main DEJ2000 Peak Degree of Declination (J2000) pos.eq.dec;meta.main VLSR [-483/481] Local Standard of Rest velocity km/s phys.veloc;pos.lsr float e_VLSR [1/14] Uncertainty in VLSR (2) km/s stat.error;phys.veloc;pos.lsr float VGSR [-686/467] Galactic Standard of Rest velocity (3) km/s phys.veloc;pos.galactocentric float Vdev [-445/443] Deviation velocity (4) km/s phys.veloc float FWHM [2.8/58.3] Fitted Full-Width at Half-Maximum (5) km/s spect.line.width float e_FWHM [2/28] Uncertainty in FWHM km/s stat.error;phys.angSize float TbFit [0.06/120] Fitted peak brightness temperature (6) K phys.temperature;stat.max float NH [1.3e+18/1.1e+22] Peak H I column density (7) cm**-2 phys.columnDensity;stat.max double e_NH Uncertainty in NH cm**-2 stat.error double Area [0.1/2253] Source area (8) deg**2 phys.angSize float dx [0.1/140] Maximum source x-extent above 2{sigma}_0_ (9) deg phys.angSize;src float dy [0.1/73.1] Maximum source y-extent above 2{sigma}_0_ (9) deg phys.angSize;src float HI HIPASS catalog identifier (11) meta.id.cross char WW91 Wakker & van Woerden 1991A&A...250..509W identifier (12) meta.id.assoc char Simbad Simbad column added by the CDS meta.ref.url char
J/ApJS/209/12/table1 The GASS high-velocity clouds (HVCs) catalog recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int Cat [GHAVC] Catalog name, "GHVC" or "GAVC" (1) meta.id;meta.table char Name HVC/AVC name GLLL.l+BB.b+VVV (1) meta.id char RAJ2000 Peak Hour of Right Ascension (J2000) pos.eq.ra;meta.main DEJ2000 Peak Degree of Declination (J2000) pos.eq.dec;meta.main VLSR [-483/481] Local Standard of Rest velocity km/s phys.veloc;pos.lsr float e_VLSR [1/14] Uncertainty in VLSR (2) km/s stat.error;phys.veloc;pos.lsr float VGSR [-686/467] Galactic Standard of Rest velocity (3) km/s phys.veloc;pos.galactocentric float Vdev [-445/443] Deviation velocity (4) km/s phys.veloc float FWHM [2.8/58.3] Fitted Full-Width at Half-Maximum (5) km/s spect.line.width float e_FWHM [2/28] Uncertainty in FWHM km/s stat.error;phys.angSize float TbFit [0.06/120] Fitted peak brightness temperature (6) K phys.temperature;stat.max float NH [1.3e+18/1.1e+22] Peak H I column density (7) cm**-2 phys.columnDensity;stat.max double e_NH Uncertainty in NH cm**-2 stat.error double Area [0.1/2253] Source area (8) deg**2 phys.angSize float dx [0.1/140] Maximum source x-extent above 2{sigma}_0_ (9) deg phys.angSize;src float dy [0.1/73.1] Maximum source y-extent above 2{sigma}_0_ (9) deg phys.angSize;src float Flag [T,H0-9,CA,N -] Source flag(s) (10) meta.code.error char HI HIPASS catalog identifier (11) meta.id.cross char WW91 Wakker & van Woerden 1991A&A...250..509W identifier (12) meta.id.assoc char Simbad Simbad column added by the CDS meta.ref.url char