J/A+A/566/A120ivo://CDS.VizieR/J/A+A/566/A120doi:10.26093/cds/vizier.35660120CDSSchultheis M.Chen B.Q.Jiang B.W.Gonzalez O.A.Enokiya R.Fukui Y.,Torii K.Rejkuba M.Minniti D.2014-12-21T17:14:44Z2014-06-24T11:05:19ZCDS support team

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

cds-question@unistra.frinterstellar-mediumgiant-starsastronomical-modelsThree dimensional interstellar extinction maps provide a powerful tool for stellar population analysis. However, until now, these 3D maps were rather limited by sensitivity and spatial resolution. We use data from the VISTA Variables in the Via Lactea survey together with the Besancon stellar population synthesis model of the Galaxy to determine interstellar extinction as a function of distance in the Galactic bulge covering -10<l<10 and -10<b<5. We adopted a recently developed method to calculate the colour excess. First we constructed the H-Ks vs. Ks and J-Ks vs. Ks colour-magnitude diagrams based on the VVV catalogues that matched 2MASS. Then, based on the temperature-colour relation for M giants and the distance-colour relations, we derived the extinction as a function of distance. The observed colours were shifted to match the intrinsic colours in the Besancon model as a function of distance iteratively. This created an extinction map with three dimensions: two spatial and one distance dimension along each line of sight towards the bulge. We present a 3D extinction map that covers the whole VVV area with a resolution of 6'x6', for J-Ks and H-Ks using distance bins of 0.5-1.0kpc. The high resolution and depth of the photometry allows us to derive extinction maps for a range of distances up to 10kpc and up to 30 magnitudes of extinction in AV (3.0mag in AKs). Integrated maps show the same dust features and consistent values as other 2D maps. We discuss the spatial distribution of dust features in the line of sight, which suggests that there is much material in front of the Galactic bar, specifically between 5-7kpc. We compare our dust extinction map with the high-resolution ^12^CO maps (NANTEN2) towards the Galactic bulge, where we find a good correlation between ^12^CO and A_V_. We determine the X factor by combining the CO map and our dust extinction map. Our derived average value X=2.5+/-0.47x10^20^/(cm^2^.K.km/s) is consistent with the canonical value of the Milky Way. The X-factor decreases with increasing extinction.2014A&A...566A.120Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/566/A120CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/349/L69 : Interstellar extinction (Schultheis+, 1999)J/A+A/453/635 : Modelling the Galactic Interstellar ExtinctionJ/A+A/495/157 : Interstellar extinction in Galactic Center (Schultheis+, 2009)J/A+A/550/A42 : Extinction map towards the Galactic bulge (Chen+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/566/A120https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/566/A120http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/566/A120https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/566/A120https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/566/A120http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/566/A120GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/566/A120/table1jk (3D Interstellar extinction as a function of distance and E(J-K))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/566/A120/table1jk?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/566/A120/table1jk?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/566/A120/table1jk?GETtext/xml+votable180.050000true271.00716-42.54490.005555555555555556Cone search capability for table J/A+A/566/A120/table1hk (3D Interstellar extinction as a function of distance and E(H-K))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/566/A120/table1hk?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/566/A120/table1hk?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/566/A120/table1hk?GETtext/xml+votable180.050000true271.00716-42.54490.0055555555555555563/448 450-451 4/1796 1798-1799 2653 2655 5/7190-7191 7234 7240-7242 7264 7266 7301 7312-7313 7316-7317 7319 10583 10589-10591 10617 10619 11946 6/28754-28755 28758-28759 28940 28942-28943 28972-28974 29060 29062 29088-29090 29096 29098 29184-29185 29188-29189 29200-29201 29260-29261 29272-29273 29440 42325-42327 42331 42353 42355 42439 42445 42447 42837 47790-47791 47802-47803 47806-47807https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/566/A120?format=asciidefaultJ/A+A/566/A120/table1jk3D Interstellar extinction as a function of distance and E(J-K)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintplotPlot of the extinction at this location as a function of the distancemeta.ref.urlcharGLON[-10/9.9] Galactic longitudedegpos.galactic.lonindexedGLAT[-10/5] Galactic latitudedegpos.galactic.latindexedE(J-K)00E(J-K) in bin 0.0-0.5kpcmagphot.color.excessfloate_E(J-K)00Error on E(J-K) in bin 0.0-0.5kpcmagstat.errorfloatE(J-K)05E(J-K) in bin 0.5-1.0kpcmagphot.color.excessfloate_E(J-K)05Error on E(J-K) in bin 0.5-1.0kpcmagstat.errorfloatE(J-K)10E(J-K) in bin 1.0-1.5kpcmagphot.color.excessfloate_E(J-K)10Error on E(J-K) in bin 1.0-1.5kpcmagstat.errorfloatE(J-K)15E(J-K) in bin 1.5-2.0kpcmagphot.color.excessfloate_E(J-K)15Error on E(J-K) in bin 1.5-2.0kpcmagstat.errorfloatE(J-K)20E(J-K) in bin 2.0-2.5kpcmagphot.color.excessfloate_E(J-K)20Error on E(J-K) in bin 2.0-2.5kpcmagstat.errorfloatE(J-K)25E(J-K) in bin 2.5-3.0kpcmagphot.color.excessfloate_E(J-K)25Error on E(J-K) in bin 2.5-3.0kpcmagstat.errorfloatE(J-K)30E(J-K) in bin 3.0-3.5kpcmagphot.color.excessfloate_E(J-K)30Error on E(J-K) in bin 3.0-3.5kpcmagstat.errorfloatE(J-K)35E(J-K) in bin 3.5-4.0kpcmagphot.color.excessfloate_E(J-K)35Error on E(J-K) in bin 3.5-4.0kpcmagstat.errorfloatE(J-K)40E(J-K) in bin 4.0-4.5kpcmagphot.color.excessfloate_E(J-K)40Error on E(J-K) in bin 4.0-4.5kpcmagstat.errorfloatE(J-K)45E(J-K) in bin 4.5-5.0kpcmagphot.color.excessfloate_E(J-K)45Error on E(J-K) in bin 4.5-5.0kpcmagstat.errorfloatE(J-K)50E(J-K) in bin 5.0-5.5kpcmagphot.color.excessfloate_E(J-K)50Error on E(J-K) in bin 5.0-5.5kpcmagstat.errorfloatE(J-K)55E(J-K) in bin 5.5-6.0kpcmagphot.color.excessfloate_E(J-K)55Error on E(J-K) in bin 5.5-6.0kpcmagstat.errorfloatE(J-K)60E(J-K) in bin 6.0-6.5kpcmagphot.color.excessfloate_E(J-K)60Error on E(J-K) in bin 6.0-6.5kpcmagstat.errorfloatE(J-K)65E(J-K) in bin 6.5-7.0kpcmagphot.color.excessfloate_E(J-K)65Error on E(J-K) in bin 6.5-7.0kpcmagstat.errorfloatE(J-K)70E(J-K) in bin 7.0-7.5kpcmagphot.color.excessfloate_E(J-K)70Error on E(J-K) in bin 7.0-7.5kpcmagstat.errorfloatE(J-K)75E(J-K) in bin 7.5-8.0kpcmagphot.color.excessfloate_E(J-K)75Error on E(J-K) in bin 7.5-8.0kpcmagstat.errorfloatE(J-K)80E(J-K) in bin 8.0-8.5kpcmagphot.color.excessfloate_E(J-K)80Error on E(J-K) in bin 8.0-8.5kpcmagstat.errorfloatE(J-K)85E(J-K) in bin 8.5-9.0kpcmagphot.color.excessfloate_E(J-K)85Error on E(J-K) in bin 8.5-9.0kpcmagstat.errorfloatE(J-K)90E(J-K) in bin 9.0-9.5kpcmagphot.color.excessfloate_E(J-K)90Error on E(J-K) in bin 9.0-9.5kpcmagstat.errorfloatE(J-K)95E(J-K) in bin 9.5-10.0kpcmagphot.color.excessfloate_E(J-K)95Error on E(J-K) in bin 9.5-10.0kpcmagstat.errorfloatE(J-K)100E(J-K) in bin 10.0-10.5kpcmagphot.color.excessfloate_E(J-K)100Error on E(J-K) in bin 10.0-10.5kpcmagstat.errorfloat_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/566/A120/table1hk3D Interstellar extinction as a function of distance and E(H-K)GLAT[-10/5] Galactic latitudedegpos.galactic.latindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintplotPlot of the extinction at this location as a function of the distancemeta.ref.urlcharGLON[-10/9.9] Galactic longitudedegpos.galactic.lonindexedE(H-K)00E(H-K) in bin 0.0-0.5kpcmagphot.color.excessfloate_E(H-K)00Error on E(H-K) in bin 0.0-0.5kpcmagstat.errorfloatE(H-K)05E(H-K) in bin 0.5-1.0kpcmagphot.color.excessfloate_E(H-K)05Error on E(H-K) in bin 0.5-1.0kpcmagstat.errorfloatE(H-K)10E(H-K) in bin 1.0-1.5kpcmagphot.color.excessfloate_E(H-K)10Error on E(H-K) in bin 1.0-1.5kpcmagstat.errorfloatE(H-K)15E(H-K) in bin 1.5-2.0kpcmagphot.color.excessfloate_E(H-K)15Error on E(H-K) in bin 1.5-2.0kpcmagstat.errorfloatE(H-K)20E(H-K) in bin 2.0-2.5kpcmagphot.color.excessfloate_E(H-K)20Error on E(H-K) in bin 2.0-2.5kpcmagstat.errorfloatE(H-K)25E(H-K) in bin 2.5-3.0kpcmagphot.color.excessfloate_E(H-K)25Error on E(H-K) in bin 2.5-3.0kpcmagstat.errorfloatE(H-K)30E(H-K) in bin 3.0-3.5kpcmagphot.color.excessfloate_E(H-K)30Error on E(H-K) in bin 3.0-3.5kpcmagstat.errorfloatE(H-K)35E(H-K) in bin 3.5-4.0kpcmagphot.color.excessfloate_E(H-K)35Error on E(H-K) in bin 3.5-4.0kpcmagstat.errorfloatE(H-K)40E(H-K) in bin 4.0-4.5kpcmagphot.color.excessfloate_E(H-K)40Error on E(H-K) in bin 4.0-4.5kpcmagstat.errorfloatE(H-K)45E(H-K) in bin 4.5-5.0kpcmagphot.color.excessfloate_E(H-K)45Error on E(H-K) in bin 4.5-5.0kpcmagstat.errorfloatE(H-K)50E(H-K) in bin 5.0-5.5kpcmagphot.color.excessfloate_E(H-K)50Error on E(H-K) in bin 5.0-5.5kpcmagstat.errorfloatE(H-K)55E(H-K) in bin 5.5-6.0kpcmagphot.color.excessfloate_E(H-K)55Error on E(H-K) in bin 5.5-6.0kpcmagstat.errorfloatE(H-K)60E(H-K) in bin 6.0-6.5kpcmagphot.color.excessfloate_E(H-K)60Error on E(H-K) in bin 6.0-6.5kpcmagstat.errorfloatE(H-K)65E(H-K) in bin 6.5-7.0kpcmagphot.color.excessfloate_E(H-K)65Error on E(H-K) in bin 6.5-7.0kpcmagstat.errorfloatE(H-K)70E(H-K) in bin 7.0-7.5kpcmagphot.color.excessfloate_E(H-K)70Error on E(H-K) in bin 7.0-7.5kpcmagstat.errorfloatE(H-K)75E(H-K) in bin 7.5-8.0kpcmagphot.color.excessfloate_E(H-K)75Error on E(H-K) in bin 7.5-8.0kpcmagstat.errorfloatE(H-K)80E(H-K) in bin 8.0-8.5kpcmagphot.color.excessfloate_E(H-K)80Error on E(H-K) in bin 8.0-8.5kpcmagstat.errorfloatE(H-K)85E(H-K) in bin 8.5-9.0kpcmagphot.color.excessfloate_E(H-K)85Error on E(H-K) in bin 8.5-9.0kpcmagstat.errorfloatE(H-K)90E(H-K) in bin 9.0-9.5kpcmagphot.color.excessfloate_E(H-K)90Error on E(H-K) in bin 9.0-9.5kpcmagstat.errorfloatE(H-K)95E(H-K) in bin 9.5-10.0kpcmagphot.color.excessfloate_E(H-K)95Error on E(H-K) in bin 9.5-10.0kpcmagstat.errorfloatE(H-K)100E(H-K) in bin 10.0-10.5kpcmagphot.color.excessfloate_E(H-K)100Error on E(H-K) in bin 10.0-10.5kpcmagstat.errorfloat_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