J/A+A/548/A125ivo://CDS.VizieR/J/A+A/548/A125doi:10.26093/cds/vizier.35480125CDSPerren G.Vazquez R.A.Carraro G.2017-12-06T07:37:46Z2013-02-25T12:30:31ZCDS support team

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

cds-question@unistra.fropen-star-clustersinfrared-photometryvisible-astronomybroad-band-photometrystellar-distanceThe spiral structure of the Milky Way inside the solar circle is still poorly known because of the high density of the material that causes strong extinction towards the Galactic center. We present results of the first extensive and deep color-color diagram (CCD) photometric survey carried out in the field of the open cluster Trumpler 27, an object immersed in a region of extremely high visual absorption in the constellation of Sagittarius not far from the Galaxy center. The survey covers almost a quarter of square degree. We look for young stars clumps that might plausibly be associated with spiral structure. Wide-field UBVI photometry combined with infrared information allows us to reconstruct the distribution in the reddening and distance of young stars in the field using the CCD and color-magnitude diagrams (CMD).2012A&A...548A.125Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/548/A125CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/536/A101 : UBVI photometry towards (l=314,b=0) (Carraro, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/548/A125https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/548/A125http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/548/A125https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/548/A125https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/548/A125http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/548/A125GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/548/A125/cat_full (Full photometry for the 9769 stars observed in the complete field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/548/A125/cat_full?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/548/A125/cat_full?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/548/A125/cat_full?GETtext/xml+votable180.050000true264.067989-33.30640.0055555555555555566/28803 288093.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/548/A125?format=asciiOpticalInfrareddefaultJ/A+A/548/A125/cat_fullFull photometry for the 9769 stars observed in the complete fieldrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStSimbad column added by the CDSmeta.ref.urlcharID[1/9769] Photometric identification of starmeta.id;phot;meta.mainintprimaryxposx position of star in the framespixpos.cartesian.x;instr.detdoubleyposy position of star in the framespixpos.cartesian.y;instr.detdoubleRAJ2000Right ascension (J2000.0) (1)degpos.eq.ra;meta.mainDEJ2000Declination (J2000.0) (1)degpos.eq.dec;meta.mainU-B? Color index (U-B)magphot.color;em.opt.U;em.opt.Bfloatnullablee_U-B? Color index (U-B) photometric errormagstat.error;phot.color;em.opt.UfloatnullableB-V? Color index (B-V)magphot.color;em.opt.B;em.opt.Vfloatnullablee_B-V? Color index (B-V) photometric errormagstat.error;phot.color;em.opt.BfloatnullableVmag? Visual magnitude (V)magphot.mag;em.opt.Vfloatnullablee_Vmag? Visual magnitude (V) photometric errormagstat.error;phot.mag;em.opt.VfloatnullableV-I? Color index (V-I)magphot.color;em.opt.V;em.opt.Ifloatnullablee_V-I? Color index (V-I) photometric errormagstat.error;phot.color;em.opt.Vfloatnullable2MDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharJ/A+A/548/A125/table2Stars inside the 600px circle which indicates the region assumed to be the core of the clusterrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[1/9769] Photometric identification of starmeta.id;photintE(B-V)Assigned value of E(B-V) extinctionmagphot.color.excessfloat(B-V)0Intrinsic value of (B-V) (1)magphot.color;em.opt.B;em.opt.Vfloat(U-B)0? Intrinsic value of (B-V) (2)magphot.color;em.opt.U;em.opt.BfloatnullableVMAGAbsolute V magnitudemagphys.magAbs;em.opt.VfloatDistDistancekpcpos.distancefloate_Dist? Error in distance assignationkpcstat.errorfloatnullableSpT1Spectral type (photometric) found in this articlesrc.spTypecharMFJ77?=- Identification in Moffat et al. (1977ApJ...215..106M), <Cl Trumpler 27 NNN> in Simbadmeta.idintnullableSpT2Spectral type found in Moffat et al. (1977ApJ...215..106M) (3)src.spTypecharSpT3Spectral type found in Massey et al. (2001AJ....121.1050M) (3)src.spTypecharJ/A+A/548/A125/table3Stars outside the 600px cluster corerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[1/9769] Photometric identification of starmeta.id;photintE(B-V)Assigned value of E(B-V) extinctionmagphot.color.excessfloat(B-V)0Intrinsic value of (B-V) (1)magphot.color;em.opt.B;em.opt.Vfloat(U-B)0? Intrinsic value of (B-V) (2)magphot.color;em.opt.U;em.opt.BfloatnullableVMAGAbsolute V magnitudemagphys.magAbs;em.opt.VfloatDistDistancekpcpos.distancefloate_Dist? Error in distance assignationkpcstat.errorfloatnullableSpT1Spectral type (photometric) found in this articlesrc.spTypecharMFJ77?=- Identification in Moffat et al. (1977ApJ...215..106M), <Cl Trumpler 27 NNN> in Simbadmeta.idintnullableSpT2Spectral type found in Moffat et al. (1977ApJ...215..106M) (3)src.spTypecharSpT3Spectral type found in Massey et al. (2001AJ....121.1050M) (3)src.spTypechar