J/ApJ/786/29ivo://CDS.VizieR/J/ApJ/786/29doi:10.26093/cds/vizier.17860029CDSSchlafly E.F.Green G.Finkbeiner D.P.Rix H.-W.Bell E.F.,Burgett W.S.Chambers K.C.Draper P.W.Hodapp K.W.Kaiser N.,Magnier E.A.Martin N.F.Metcalfe N.Price P.A.Tonry J.L.2017-05-30T07:01:38Z2014-09-10T16:27:57ZCDS support team

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

cds-question@unistra.frdiffuse-molecular-cloudsmolecular-cloudsstellar-distanceDistance measurements to molecular clouds are important but are often made separately for each cloud of interest, employing very different data and techniques. We present a large, homogeneous catalog of distances to molecular clouds, most of which are of unprecedented accuracy. We determine distances using optical photometry of stars along lines of sight toward these clouds, obtained from PanSTARRS-1. We simultaneously infer the reddenings and distances to these stars, tracking the full probability distribution function using a technique presented in Green et al. (2014ApJ...783..114G). We fit these star-by-star measurements using a simple dust screen model to find the distance to each cloud. We thus estimate the distances to almost all of the clouds in the Magnani et al. (1985ApJ...295..402M, MBM) catalog, as well as many other well-studied clouds, including Orion, Perseus, Taurus, Cepheus, Polaris, California, and Monoceros R2, avoiding only the inner Galaxy. Typical statistical uncertainties in the distances are 5%, though the systematic uncertainty stemming from the quality of our stellar models is about 10%. The resulting catalog is the largest catalog of accurate, directly measured distances to molecular clouds. Our distance estimates are generally consistent with available distance estimates from the literature, though in some cases the literature estimates are off by a factor of more than two.2014ApJ...786...29Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/786/29CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/786/29https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/786/29http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/786/29https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/786/29https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/786/29http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/786/29GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/786/29/bigcloud (Distances to major molecular clouds)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/786/29/bigcloud?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/786/29/bigcloud?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/786/29/bigcloud?GETtext/xml+votable180.050000true354.74169228.5220440.005555555555555556Cone search capability for table J/ApJ/786/29/mbmcloud (Distances to MBM clouds (1985ApJ...295..402M))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/786/29/mbmcloud?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/786/29/mbmcloud?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/786/29/mbmcloud?GETtext/xml+votable180.050000true132.25914572.6152410.0055555555555555566/121 175 252 342 428 456 469 597 598 611 619 668 857 858 859 860 861 862 869 881 1047 1054 1074 1075 1078 1128 1167 1260 1266 1538 1542 1543 1544 1545 1568 1605 2044 2046 3411 3417 3441 3946 4047 6603 6929 7356 7407 7588 7596 7610 7949 7952 7973 8566 12204 12406 12562 13584 13740 13918 13940 15671 15673 15676 15722 15758 15765 15771 15779 15801 15843 15848 16071 16083 16128 16131 16133 16158 16164 16176 16178 16180 16191 16203 16204 16207 16229 16239 16277 16320 16329 16338 18291 18426 19549 19781 19886 20006 20007 20116 20127 20166 20171 20365 20378 21329 21336 21340 21359 21401 21407 21425 21428 21438 21456 21645 21650 21656 21669 22043 22045 22047 22241 22246 22251 22555 22620 22621 22804 22805 22808 22852 22880 22903 22909 23007 23154 23429 23549 23550 23551 23586 23598 23645 23647 23669 23703 23713 23717 23729 23741 29998 30002 30083 30096 30729 30732 30733 30735 30745 30747 30772 30773 30792 30793 30796 30798 30820 30821 30827 30832 30902 31082 31241 31245 31257 31263 31287 31307 31344 32009 32036 32037 36710 42959 42971 42975 44125 44133 44297 44302 44321 44322 44324 44325 44326 44369 44371 44373 44374 44379 47954 48874 48875 48995 48998https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/786/29?format=asciiOpticaldefaultJ/ApJ/786/29/bigcloudDistances to major molecular cloudsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of sky region of sight linemeta.id;meta.maincharGLONGalactic longitude (l)degpos.galactic.lonGLATGalactic latitude (b)degpos.galactic.latE(B-V)Median E(B-V) of Planck map toward stars (medebv)magphot.color.excessfloatm1616th percentile distance modulusmagphot.mag.distModfloatm5050th percentile distance modulusmagphot.mag.distModfloatm8484th percentile distance modulusmagphot.mag.distModfloatn1616th percentile map normalization factorstat.fit.paramfloatn5050th percentile map normalization factorstat.fit.paramfloatn8484th percentile map normalization factorstat.fit.paramfloatf1616th percentile foreground reddeningmagphot.color.excessfloatf5050th percentile foreground reddeningmagphot.color.excessfloatf8484th percentile foreground reddeningmagphot.color.excessfloatft[1/2] fit type: 1=small beam (0.2{deg}) used, 2=large beam (0.7{deg}) used (fittype)meta.codeintN*[20/1083] Number of stars used in analysis (nstar_tot)meta.numberint_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/ApJ/786/29/mbmcloudDistances to MBM clouds (1985ApJ...295..402M)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of sky region of sight linemeta.id;meta.maincharGLONGalactic longitude (l)degpos.galactic.lonGLATGalactic latitude (b)degpos.galactic.latE(B-V)Median E(B-V) of Planck map toward stars (medebv)magphot.color.excessfloatm1616th percentile distance modulusmagphot.mag.distModfloatm5050th percentile distance modulusmagphot.mag.distModfloatm8484th percentile distance modulusmagphot.mag.distModfloatn1616th percentile map normalization factorstat.fit.paramfloatn5050th percentile map normalization factorstat.fit.paramfloatn8484th percentile map normalization factorstat.fit.paramfloatf1616th percentile foreground reddeningmagphot.color.excessfloatf5050th percentile foreground reddeningmagphot.color.excessfloatf8484th percentile foreground reddeningmagphot.color.excessfloatft[1/2] fit type: 1=small beam (0.2{deg}) used, 2=large beam (0.7{deg}) used (fittype)meta.codeintN*[20/1083] Number of stars used in analysis (nstar_tot)meta.numberint_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