J/ApJ/764/74ivo://CDS.VizieR/J/ApJ/764/74doi:10.26093/cds/vizier.17640074CDSFor B.-Q.Staveley-Smith L.McClure-Griffiths N.M.2017-10-16T09:40:51Z2014-12-06T09:10:52ZCDS support team

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

cds-question@unistra.frh-i-line-emissionmagellanic-cloudsdiffuse-molecular-cloudssurveysWe present a catalog of high-velocity clouds in the region of the Magellanic Leading Arm. The catalog is based on neutral hydrogen (H I) observations from the Parkes Galactic All-Sky Survey. Excellent spectral resolution allows clouds with narrow-line components to be resolved. The total number of detected clouds is 419. We describe the method of cataloging and present the basic parameters of the clouds. We discuss the general distribution of the high-velocity clouds and classify the clouds based on their morphological type. The presence of a significant number of head-tail clouds and their distribution in the region is discussed in the context of Magellanic System simulations. We suggest that ram-pressure stripping is a more important factor than tidal forces for the morphology and formation of the Magellanic Leading Arm and that different environmental conditions might explain the morphological difference between the Magellanic Leading Arm and Magellanic Stream. We also discuss a newly identified population of clouds that forms the LA IV and a new diffuse bridge-like feature connecting the LA II and III complexes.2013ApJ...764...74Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/764/74CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/76 : Leiden/Argentine/Bonn (LAB) Survey of Galactic HI (Kalberla+ 2005)J/ApJS/209/12 : High-velocity clouds from GASS. I. (Moss+, 2013)J/A+A/547/A12 : Leading arm Magellanic Cloud Catalog (Venzmer+, 2012)J/ApJ/702/940 : Radio and UV spectra of HVC toward the MC (Lehner+, 2009)J/ApJ/688/290 : GASS HI survey of the lower halo (Ford+, 2008)J/MNRAS/339/105 : Western Magellanic Bridge HI observations (Muller+, 2003)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)http://www.astro.uni-bonn.de/hisurvey/gass/ : Galactic All Sky Survey datahttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/764/74https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/764/74http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/764/74https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/764/74https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/764/74http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/764/74GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/764/74/table1 (Galactic All-Sky Survey (GASS) catalog of detected sources in the region of the Magellanic Leading Arm)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/764/74/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/764/74/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/764/74/table1?GETtext/xml+votable180.050000true178.5849-35.7450.0055555555555555566/20516 20523 20592 20610 24587 24612 24613 24621 24704 24735 24763 24770 24810 24811 24969 25104 26683 26776 26786 26792 26858 27139 27142 27153 27180 27233 32774 32788 32789 32790 32797 32800 32834 33088 33108 33811 34068 34115 34124 34127 34136 34141 36868 36876 36877 36891 36895 36896 36897 36903 36905 36923 36935 36945 36946 36947 36948 36950 36954 36964 36974 37002 37007 37009 37011 37015 37019 37023 37063 37081 37082 37084 37089 37090 37094 37095 37099 37103 37108 37111 37112 37119 37157 37185 37192 37205 37257 37262 37273 37276 37287 37291 37296 37310 37347 37360 37362 37369 37373 37380 37409 37413 37417 37422 37425 37432 37433 37442 37460 37489 37495 37504 37505 37519 37522 37532 37586 37619 37632 37633 37638 37647 37665 37668 37678 37679 37682 37696 37756 37762 37769 37776 37800 37888 37889 37891 37893 37895 37896 37900 37912 37913 37915 37954 37957 37996 38030 38063 38087 38095 38099 38100 38116 38133 38136 38141 38144 38150 38175 38197 38203 38206 38223 38272 38276 38282 38287 38294 38301 38308 38352 38357 38376 38390 38394 38401 38443 38446 38466 38470 38472 38475 38483 38492 38502 38514 38515 38528 38539 38557 38575 38582 38608 38626 38637 38652 38658 38660 38661 38677 38686 38689 38707 38709 38726 38728 38732 38746 38748 38753 38782 38808 38812 38843 38848 38857 38883 38902 38950 38954 38959 38969 38994 39011 39023 39034 39045 39093 39105 39116 39119 39120 39130 39152 39154 39167 39237 39239 39250 39271 39293 39298 39301 39303 39317 39325 39328 39331 39332 39333 39352 39358 39399 39404 39431 39434 39436 39442 39443 39446 39451 39470 39475 39476 39485 39486 39491 39495 39499 39518 39521 39524 39529 39530 39535 39542 39548 39553 39559 39568 39569 39571 39572 39581 39603 39616 39623 39625 39639 39641 39643 39650 39654 39672 39683 39691 39701 39704 39722 39740 39780 39815 39818 39840 39859 39889 39892 39942 39948 39965 39968 39988 40007 40025 40066 40093 40193 40197 40201 40210 40240 40266 40283 40285 40294 40355 40389 40420 40476 40513 40793 40970 40974 40995 40996 41004 41007 41012 41016 41019 41059 41065 41075 41076 41077 41088 41090 41095 41112 41122 41126 41196 41256 41345 41479 41494 41516 41526 41586 41588 41591 41603 41677 41678 41703 41713 41715 41721 41724 43065 43092 43097 43121 43136 43137 43152 43159 43160 43177 43188 43209 43225 43230 43233 43236 43243 43261 43306 43324 43412 43415 43425 43429 43435 43543 43551 43599 43604 43683 43688 43745 43749 43791 43793 43797 43809 43818 43855 43874 43881 43883 45204 45210https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/764/74?format=asciiRadiodefaultJ/ApJ/764/74/table1Galactic All-Sky Survey (GASS) catalog of detected sources in the region of the Magellanic Leading ArmSeq[1/431] Identification numbermeta.idintprimaryNameSource designation (1)meta.id;meta.maincharVlsr[158.7/421.1]? Local Standard of Rest velocitykm/sphys.veloc;pos.lsrfloatnullableVgsr? Galactic Standard of Rest velocity (Vgsr=220cos(b)sin(l)+Vlsr)km/sphys.veloc;pos.galacticfloatnullableVlgsr? Local Group Standard of Rest velocity (2)km/sphys.velocfloatnullableFWHM[2/134]? Velocity Full-Width at Half-Maximum measured at 50% of peak fluxkm/sspect.line.widthfloatnullableFint[0.8/8575]? Corrected HI integrated fluxJy.km/sphot.fluxfloatnullableTb[0.1/9.4]? Peak brightness temperatureKphys.temperature;stat.maxfloatnullableNHI[0.08/30]? Peak HI column density1e+19cm**-2phys.columnDensityfloatnullableamaj[0.2/1.6]? Semi-major axisdegphys.angSize.smajAxisfloatnullablebmin[0.1/0.8]? Semi-minor axisdegphys.angSize;srcfloatnullablePA[-90/89]? Position angledegpos.posAngintnullableFlagWarning flag (3)meta.code.errorcharClassClassification or other name (4)src.morph.paramcharSimbadSimbad column added by the CDSmeta.ref.urlchar_GlonPositions from names (longitude part)degpos.galactic.lon_GlatPositions from names (latitude part)degpos.galactic.lat_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)degpos.eq.decnullableindexed