J/A+A/594/A116ivo://CDS.VizieR/J/A+A/594/A116doi:10.26093/cds/vizier.35940116CDSHI4PI collaborationBen Bekhti N.Floeer L.Keller R.Kerp J.Lenz D.,Winkel B.Bailin J.Calabretta M.R.Dedes L.Ford H.A.Gibson B.K.,Haud U.Janowiecki S.Kalberla P. M. W.Lockman F.J.,McClure-Griffiths N.M.Murphy T.Nakanishi H.Pisano D.J.,Staveley-Smith L.2016-10-20T08:23:38Z2016-10-20T08:41:03ZCDS support team

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

cds-question@unistra.frsurveysh-i-line-emissionmilky-way-galaxyinterstellar-mediumspectroscopyMeasurement of the Galactic neutral atomic hydrogen (HI) column density, NHI, and brightness temperatures, Tb, is of high scientific value for a broad range of astrophysical disciplines. In the past two decades, one of the most-used legacy HI datasets has been the Leiden/Argentine/Bonn Survey (LAB). We release the HI 4-pi survey (HI4PI), an all-sky database of Galactic HI, which supersedes the LAB survey. The HI4PI survey is based on data from the recently completed first coverage of the Effelsberg-Bonn HI Survey (EBHIS) and from the third revision of the Galactic All-Sky Survey (GASS). EBHIS and GASS share similar angular resolution and match well in sensitivity. Combining both, they are ideally suited to be a successor to LAB. The new HI4PI survey outperforms the LAB in angular resolution (16.1', FWHM) and sensitivity (43mK RMS). Moreover, it has full spatial sampling and thus overcomes a major issue of LAB, which severely undersamples the sky. We publish all-sky column density maps of the neutral atomic hydrogen in the Milky Way, along with full spectroscopic data, in several map projections including HEALPix.2016A&A...594A.116Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/594/A116CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/594/A116https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/594/A116http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/594/A116https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/594/A116https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/594/A116http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/594/A116GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/594/A116/hpxspec (List of HPX-grid FITS binary tables)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/594/A116/hpxspec?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/594/A116/hpxspec?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/594/A116/hpxspec?GETtext/xml+votable180.050000true205.977628.96460.005555555555555556Cone search capability for table J/A+A/594/A116/cubes_eq (List of 20dx20d FITS data cubes, Equatorial)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/594/A116/cubes_eq?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/594/A116/cubes_eq?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/594/A116/cubes_eq?GETtext/xml+votable180.050000true10.0-80.00.005555555555555556Cone search capability for table J/A+A/594/A116/cubes_gal (List of 20dx20d FITS data cubes, Galactic)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/594/A116/cubes_gal?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/594/A116/cubes_gal?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/594/A116/cubes_gal?GETtext/xml+votable180.050000true2.1501-30.61540.005555555555555556Cone search capability for table J/A+A/594/A116/nhi_hpx (HI column densities)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/594/A116/nhi_hpx?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/594/A116/nhi_hpx?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/594/A116/nhi_hpx?GETtext/xml+votable180.050000true192.9097127.137880.0055555555555555560/0-11 6/https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/594/A116?format=asciiRadioOpticaldefaultJ/A+A/594/A116/hpxspecList of HPX-grid FITS binary tablesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latdoubleRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainHPXidxHealPIX index (nside=4, RING scheme,0-based)meta.idintFileNameName of the FITS file in subdirectory HPXmeta.id;meta.fitscharJ/A+A/594/A116/nhi_eqList of all-sky NHI FITS images, EquatorialrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWCSprojWCS projection codemeta.codecharb_RVelLower radial velocity limit (LSR, Radio)km/sspect.dopplerVeloc;stat.minintB_RVelUpper radial velocity limit (LSR, Radio)km/sspect.dopplerVeloc;stat.maxintFileNameName of FITS file in subdirectory NHI/EQ2000meta.id;meta.fitscharJ/A+A/594/A116/nhi_galList of all-sky NHI FITS images, GalacticrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWCSprojWCS projection codemeta.codecharb_RVelLower radial velocity limit (LSR, Radio)km/sspect.dopplerVeloc;stat.minintB_RVelUpper radial velocity limit (LSR, Radio)km/sspect.dopplerVeloc;stat.maxintFileNameName of FITS file in subdirectory NHI/GALmeta.id;meta.fitscharJ/A+A/594/A116/allsky_eqList of all-sky FITS data cubes, EquatorialrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWCSprojWCS projection codemeta.codecharFileNameName of FITS file in subdirectory ALLSKY/EQ2000meta.id;meta.fitscharJ/A+A/594/A116/allsky_galList of all-sky FITS data cubes, GalacticrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWCSprojWCS projection codemeta.codecharFileNameName of FITS file in subdirectory ALLSKY/GALmeta.id;meta.fitscharJ/A+A/594/A116/cubes_eqList of 20dx20d FITS data cubes, EquatorialrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000) of data cube centerdegpos.eq.ra;meta.mainDEJ2000Declination (J2000) of data cube centerdegpos.eq.dec;meta.mainWCSprojWCS projection codemeta.codecharFileNameName of FITS file in subdirectory CUBES/EQ2000meta.id;meta.fitscharJ/A+A/594/A116/cubes_galList of 20dx20d FITS data cubes, GalacticrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGLONGalactic longitude of data cube centerdegpos.galactic.lonGLATGalactic latitude of data cube centerdegpos.galactic.latWCSprojWCS projection codemeta.codecharFileNameName of FITS file in subdirectory CUBES/GALmeta.id;meta.fitschar_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.decnullableindexedJ/A+A/594/A116/nhi_hpxHI column densitiesNHIHI column densitycm**-2phys.columnDensitydoubleHPXHPX index (HPXINDEX)meta.idintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainindexedDEJ2000Declination (J2000)degpos.eq.dec;meta.mainindexedGLONGalactic longitude (J2000)degpos.galactic.lonGLATGalactic latitude (J2000)degpos.galactic.latdouble