II/354ivo://CDS.VizieR/II/354CDSGontcharov G.A.Mosenkov A.V.2018-02-06T06:47:11Z2018-01-29T08:17:47ZCDS support team

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

cds-question@unistra.frextinctioninterstellar-mediummilky-way-galaxyinterstellar-reddeningThese reddening and interstellar extinction estimates are a result of a series of studies presented in the papers 2009AstL...35..780G, 2010AstL...36..584G, 2012AstL...38...12G, 2012AstL...38...87G, 2017AstL...43..472G and finally 2017MNRAS.472.3805G and 2018MNRAS.475.1121G. The key basis of these estimates is the 3D reddening map of Gontcharov (2017AstL...43..472G, 2017PAZh...43..521G, Cat. J/PAZh/43/521). This map has been tested among eight sources of reddening and extinction estimates for nearly 60,000 Gaia DR1 TGAS main sequence stars younger than 3Gyr with a relative error of the Gaia parallax less than 0.1. The sources are tested in their ability to put the stars among the PARSEC and MIST theoretical isochrones in the Hertzsprung-Russell diagram based on the precise Gaia, Tycho-2, 2MASS and WISE photometry. The 3D reddening map of Gontcharov provides both the minimal number of outliers bluer than any reasonable isochrone and the correct number of stars younger than 3Gyr in agreement with the Besancon Galaxy model. In another test Gaia DR1 TGAS parallaxes, Tycho-2 photometry and reddening/extinction estimates from nine data sources for 38,074 giants within 415pc from the Sun are used to compare their position in the Hertzsprung-Russell diagram with theoretical estimates, which are based on the PARSEC and MIST isochrones and the TRILEGAL model of the Galaxy with its parameters being widely varied. We conclude that, again, the estimates from the 3D reddening map of Gontcharov, including the median reddening E(B-V)=0.06mag at |b|>50{deg}, give the best fit of the empirical and theoretical data with each other. Based on these studies we present here the best up-to-date reddening, extinction and extinction-to-reddening estimates for the Gaia DR1 TGAS and Hipparcos stars within 415pc from the Sun. The accuracy of the E(B-V) estimates is proved to be better than 0.04mag everywhere in this space.2017MNRAS.472.3805Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/II/354CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/259 : The Tycho-2 Catalogue (Hog+ 2000)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)I/337 : Gaia DR1 (Gaia Collaboration, 2016)J/PAZh/38/15 : Total-to-selective extinction ratio within 700pcJ/PAZh/43/521 : 3D map of reddening and interstellar extinctionhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=II/354https://vizier.iucaa.in/viz-bin/VizieR-2?-source=II/354http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=II/354https://vizier.cds.unistra.fr/viz-bin/votable?-source=II/354https://vizier.iucaa.in/viz-bin/votable?-source=II/354http://vizieridia.saao.ac.za/viz-bin/votable?-source=II/354GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table II/354/tgasext (E(J-Ks), E(B-V), Rv and Av for Gaia DR1 TGAS stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/II/354/tgasext?https://vizier.iucaa.in/viz-bin/conesearch/II/354/tgasext?http://vizieridia.saao.ac.za/viz-bin/conesearch/II/354/tgasext?GETtext/xml+votable180.050000true0.00091.0890.005555555555555556Cone search capability for table II/354/hipext (E(J-Ks), E(B-V), Rv and Av for Hipparcos stars, not in Gaia DR1 TGAS)https://vizier.cds.unistra.fr/viz-bin/conesearch/II/354/hipext?https://vizier.iucaa.in/viz-bin/conesearch/II/354/hipext?http://vizieridia.saao.ac.za/viz-bin/conesearch/II/354/hipext?GETtext/xml+votable180.050000true0.0038-19.49880.0055555555555555560/2 3 5 7 9 11 1/0 2 3 4 6 7 16 19 24 26 27 32 33 34 40 42 43 2/5 6 7 20 22 23 68 69 71 73 75 100 102 103 140 141 143 164 165 166 3/17 18 19 84 85 87 280 282 283 289 290 291 297 298 299 404 405 406 568 570 571 668 669 670 4/64 65 66 344 345 347 1124 1126 1127 1152 1153 1154 1184 1185 1187 1628 1629 1630 2276 2277 2279 2684 2685 2686 5/268 270 271 1384 1386 1387 4500 4501 4503 4621 4622 4623 4744 4745 4747 6524 6526 9112 9113 9115 10749 10750 10751 6/1077 1078 1079 5540 5541 5543 18009 18010 18011 18480 18481 18483 18984 18985 18986 26101 26102 26103 26108 26110 26111 36456 36458 36459 42994 42995https://cdsarc.cds.unistra.fr/viz-bin/moc/II/354?format=asciidefaultII/354/tgasextE(J-Ks), E(B-V), Rv and Av for Gaia DR1 TGAS starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceSource ID (Cat. I/337)meta.id;meta.mainHIP? Hipparcos (Cat. I/311) identifiermeta.idintnullableRA_ICRSApproximate right ascension (ICRS) at epoch 2015.0 (G1)degpos.eq.ra;meta.mainindexedDE_ICRSApproximate declination (ICRS) at epoch 2015.0 (G1)degpos.eq.dec;meta.mainindexedGLONApproximate Galactic longitude at epoch 2015.0 (G1)degpos.galactic.lonGLATApproximate Galactic latitude at epoch 2015.0 (G1)degpos.galactic.latdoubleE(J-Ks)[0.00,0.26] E(J-Ks) reddening (G2)magphot.color.excessfloatE(B-V)[0.00,0.43] E(B-V) reddening (G3)magphot.color.excessfloatRv[2.01,4.12] Rv total-to-selective extinction ratio (G4)phys.absorption.gal;arith.ratiofloatAv[0.00,1.24] Av interstellar extinction (G5)magphys.absorptionfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RA.icrsRight ascension (ICRS) at Epoch=J2015. (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2015. (computed by VizieR, not part of the original data)degpos.eq.decnullableindexedII/354/hipextE(J-Ks), E(B-V), Rv and Av for Hipparcos stars, not in Gaia DR1 TGASrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHIPHipparcos (Cat. I/311) identifiermeta.idintRA_ICRSApproximate right ascension (ICRS) at epoch 1991.25 (G6)degpos.eq.ra;meta.mainindexedDE_ICRSApproximate declination (ICRS) at epoch 1991.25 (G6)degpos.eq.dec;meta.mainindexedGLONApproximate Galactic longitude at epoch 1991.25 (G6)degpos.galactic.lonGLATApproximate Galactic latitude at epoch 1991.25 (G6)degpos.galactic.latdoubleE(J-Ks)[0.00,0.24] E(J-Ks) reddening (G7)magphot.color.excessfloatE(B-V)[0.00,0.40] E(B-V) reddening (G3)magphot.color.excessfloatRv[2.16,4.07] Rv total-to-selective extinction ratio (G4)phys.absorption.gal;arith.ratiofloatAv[0.00,1.15] Av interstellar extinction (G5)magphys.absorptionfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RA.icrsRight ascension (ICRS) at Epoch=J1991.25 (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J1991.25 (computed by VizieR, not part of the original data)degpos.eq.decnullableindexed