VIII/76ivo://CDS.VizieR/VIII/76CDSKalberla P.M.W.Burton W.B.Hartmann D.Arnal E.M.Bajaja E.,Morras R.Poeppel W.G.L.2017-07-10T06:21:57Z2005-08-31T12:16:09ZCDS support team

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

cds-question@unistra.frh-i-line-emissioninterstellar-mediumsurveysradio-sourcesstar-atlasesThe LAB survey contains the final data release of observations of 21-cm emission from Galactic neutral hydrogen over the entire sky, merging the Leiden/Dwingeloo Survey (LDS: Hartmann & Burton 1997, Cat. VIII/54) of the sky north of -30{deg} with the Instituto Argentino de Radioastronomia Survey (IAR: Arnal et al. 2000A&AS..142...35A and Bajaja et al. 2005, Cat. VIII/75) of the sky south of -25{deg}. The angular resolution of the combined material is HPBW ~ 0.6{deg}. The LSR velocity coverage spans the interval -450 km/s to +400 km/s, at a resolution of 1.3km/s. The data were corrected for stray radiation at the Institute for Radioastronomy of the University of Bonn, refining the original correction applied to the LDS. The rms brightness-temperature noise of the merged database is 0.07-0.09 K. Residual errors in the profile wings due to defects in the correction for stray radiation are for most of the data below a level of 20-40 mK. It would be necessary to construct a telescope with a main beam efficiency of {eta}MB>99% to achieve the same accuracy. The merged and refined material entering the LAB Survey of Galactic H I is intended to be a general resource useful to a wide range of studies of the physical and structural characteristices of the Galactic interstellar environment. The LAB Survey is the most sensitive Milky Way H I survey to date, with the most extensive coverage both spatially and kinematically. The Survey is available as 3-D maps, with or without Hanning smoothing, covering the whole +/-458km/s or limited to +/-250km/s range. The resolution of the 3-D maps is 0.5{deg} in galactic longitude and latitude, and up to 1km/s in velocity. The survey exists also as (b,v) maps at longitude intervals stepped by 0.5{deg} -- these files supersedes the FITS files given in the Hartmann and Burton Atlas (Cat. VIII/54)2005A&A...440..775Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/VIII/76CatalogResearchIsServedByTAP VizieR generic servicerelated-tohttp://www.astro.uni-bonn.de/~webrai/german/tools_labsurvey.php :https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=VIII/76https://vizier.iucaa.in/viz-bin/VizieR-2?-source=VIII/76http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=VIII/76https://vizier.cds.unistra.fr/viz-bin/votable?-source=VIII/76https://vizier.iucaa.in/viz-bin/votable?-source=VIII/76http://vizieridia.saao.ac.za/viz-bin/votable?-source=VIII/76GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapRadiodefaultVIII/76/bvmapsList of the 721 (v,b) maps in "bvmaps" subdirectoryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGLONGalactic longitude of the mapdegFITSfileName of fits file in "bvmaps" subdirectory, made of 893x361 points (+/-450km/s velocity range, +/-90{deg} galactic latitude range)char