J/ApJS/213/22ivo://CDS.VizieR/J/ApJS/213/22doi:10.26093/cds/vizier.22130022CDSYoshikawa T.Nishiyama S.Tamura M.Kwon J.Nagata T.2018-01-04T08:22:28Z2014-09-17T09:57:35ZCDS support team

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

cds-question@unistra.frpolarimetrymilky-way-galaxyyoung-stellar-objectsinfrared-sourcesWe have carried out near-infrared polarimetry toward the boundary of the Central Molecular Zone, in the field of (-1.{deg}4<~l<~-0.{deg}3 and 1.{deg}0<~l<~2.{deg}9,|b|<~0.{deg}1), using the near-infrared polarimetric camera SIRPOL on the 1.4m Infrared Survey Facility telescope. We have selected 112 intrinsically polarized sources on the basis of the estimate of interstellar polarization on Stokes Q/I-U/I planes. The selected sources are brighter than K_S_=14.5mag and have polarimetric uncertainty {delta}P<1%. Ten of these distinctive polarized sources are fit well with spectral energy distributions of young stellar objects when using the photometry in the archive of the Spitzer Space Telescope mid-infrared data. However, many sources have spectral energy distributions of normal stars suffering from heavy interstellar extinction; these might be stars behind dark clouds. Due to the small number of distinctive polarized sources and candidates of young stellar objects, we cannot judge if they are declining in number outside the Central Molecular Zone. Many massive candidates for young stellar objects in the literature have only small intrinsic polarization. This might suggest that their masses are 4-15M_{sun}_, whose intrinsic polarization has been expected to be small.2014ApJS..213...22Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/213/22CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)II/316 : UKIDSS-DR6 Galactic Plane Survey (Lucas+ 2012)II/295 : Spitzer IRAC survey of the galactic center (Ramirez+, 2008)J/A+A/563/A68 : CH_3_OH and H_2_O Galactic center masers (Chambers+, 2014)J/ApJ/736/133 : Spitzer-IRS study of massive YSOs in GC (An+, 2011)J/ApJS/181/227 : Catalog of 24um sources toward Galactic Center (Hinz+, 2009)J/ApJ/702/178 : YSOs in the central 400pc of the Galaxy (Yusef-Zadeh+, 2009)J/ApJ/697/1741 : Warped disks of YSOs in Galactic center (Bartko+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/213/22https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/213/22http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/213/22https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/213/22https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/213/22http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/213/22GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/213/22/table1 (Distinctive polarized sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/213/22/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/213/22/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/213/22/table1?GETtext/xml+votable180.050000true266.1795177-29.24453770.0055555555555555566/28826 28827 28831 28874 288757.952274030004205e-20 1.0188844282367877e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/213/22?format=asciiInfrareddefaultJ/ApJS/213/22/table1Distinctive polarized sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/112] Running sequence numbermeta.id;meta.mainintprimaryYSOSimbad column added by the CDSmeta.ref.urlcharGLON[-1.45/2.9] Galactic longitudedegpos.galactic.lonGLAT[-0.07/0.15] Galactic latitudedegpos.galactic.latKsmag[9.5/14.5] Ks-band magnitudemagphot.mag;em.IR.KfloatQ/I[-0.2/0.2] Relative Stokes parameter Q/Iphys.polarization.stokesfloate_Q/I[0.0008/0.02] Q/I uncertaintystat.errorfloatU/I[-0.2/0.2] Relative Stokes parameter U/Iphys.polarization.stokesfloate_U/I[0.0006/0.05] U/I uncertaintystat.errorfloatPol[2.3/20] Degree of polarization%phys.polarizationfloate_Pol[0.06/4] Pol uncertainty%stat.errorfloattheta[0.7/180] Polarisation position angle {theta}degpos.posAng;phys.polarizationfloate_theta[0.4/21] theta uncertaintydegstat.error;pos.posAngfloat_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/ApJS/213/22/table3Properties of YSO candidatesPolPolarization type (3)phys.polarization.linearcharSEDSED class (2)src.classcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[10/112] Identification numbermeta.id;meta.mainintH-Ks[2/4.1]? H-Ks color indexmagphot.color;em.IR.H;em.IR.Kfloatnullable[3.6/4.5][0.4/1.5]? IRAC (3.6-4.5) micron band color indexmagphot.color;em.IR;em.IRfloatnullable[5.8/8][0.1/1]? IRAC (5.8-8.0) micron band color indexmagphot.color;em.IR;em.IRfloatnullableClassYSO class (1)src.classnullable<DH-Ks>[-0.5/2.5]? Difference of observed H-K_S_ colors between distinctive polarized sources and the surrounding sources (<{Delta}(H-K_S_)>) (4)magphot.mag;arith.difffloatnullableIRCatCross-match within 1" with the Spitzer catalogs of the Galactic Center (Cat. J/ApJS/181/227 and II/295)meta.ref.urlintnullable