J/A+A/690/A49ivo://CDS.VizieR/J/A+A/690/A49doi:10.26093/cds/vizier.36900049CDSUppal N.Ganesh S.Pelgrims V.Joshi S.Sarkar M.2025-02-18T20:01:34Z2024-09-27T10:25:56ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyopen-star-clustersinterstellar-mediumpolarimetryOur objective is to investigate the distribution of dust and associated large-scale structures of the Galaxy using optical linear polarization measurements of various open clusters located at different distances in the Galactic anticenter direction.We present R-band linear polarization observations of stars towards five open clusters: Kronberger 1, Berkeley 69, Berkeley 71, Berkeley 19, and King 8 in the anticenter direction. The polarization observations were carried out using ARIES IMaging POLarimeter mounted on the 104cm Sampurnanand telescope of ARIES, Nainital, making it the first study to target the polarization observations towards distant clusters (~6kpc). We combined the observed polarization data with the distance information from the Gaia space telescope to infer the dust distribution along the line of sight.The variation in the degree of polarization and extinction with distance reveals the presence of multiple dust layers along each cluster direction. In addition, common foreground dust layers detected towards different cluster directions highlight the presence of global features such as spiral arms. Our results show that the dust clouds at 2kpc towards Berkeley 69 and Berkeley 71 coincide with the Perseus arm, while the dust layer at ~4kpc towards distant clusters, Berkeley 19 and King 8, indicates the presence of the Outer arm. The large-scale dust distribution obtained by combining our polarization results with the previous polarization studies of nearby open clusters suggests that the anticenter direction is characterized by low extinction, homogeneous dust distribution with somewhat uniform orientation of the plane-of-sky component of the magnetic field along the line of sight.Our study demonstrates the utility of polarization as a tool to study the large-scale dust distribution and structural features where the kinematic distance methods are inadequate to provide accurate distances to the dust clouds. The global dust distribution towards the anticenter direction shows signatures of the intervening spiral arms.2024A&A...690A..49Uhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/690/A49CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/355 : Gaia DR3 Part 1. Main source (Gaia collaboration, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/690/A49https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/690/A49http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/690/A49https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/690/A49https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/690/A49http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/690/A49GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/690/A49/kron1 (Kronberger 1 polarization measurements)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/690/A49/kron1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/690/A49/kron1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/690/A49/kron1?GETtext/xml+votable180.050000true81.9683334.782840.005555555555555556Cone search capability for table J/A+A/690/A49/berk69 (Berkeley 69 polarization measurements)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/690/A49/berk69?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/690/A49/berk69?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/690/A49/berk69?GETtext/xml+votable180.050000true80.978132.606870.005555555555555556Cone search capability for table J/A+A/690/A49/berk71 (Berkeley 71 polarization measurements)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/690/A49/berk71?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/690/A49/berk71?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/690/A49/berk71?GETtext/xml+votable180.050000true85.1191432.282970.005555555555555556Cone search capability for table J/A+A/690/A49/king8 (King 8 polarization measurements)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/690/A49/king8?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/690/A49/king8?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/690/A49/king8?GETtext/xml+votable180.050000true87.2121533.588980.005555555555555556Cone search capability for table J/A+A/690/A49/berk19 (Berkeley 19 polarization measurements)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/690/A49/berk19?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/690/A49/berk19?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/690/A49/berk19?GETtext/xml+votable180.050000true80.8748529.53650.0055555555555555566/1285 1297 1299 24483 24489 24500 24502 24544https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/690/A49?format=asciidefaultJ/A+A/690/A49/kron1Kronberger 1 polarization measurementsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR3Gaia DR3 Source IDmeta.id;meta.mainRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainPobsDegree of polarization%phys.polarizationfloate_PobsDegree of polarization error%stat.errorfloatPDebiased degree of polarization%phys.polarizationfloatthetaPolarization angledegpos.posAng;phys.polarizationfloate_thetaPolarization angle errordegstat.error;pos.posAngfloate_qq Stokes parameter errorstat.errorfloatuu normalized Stokes parameterphys.polarization.stokes;arith.ratiofloate_uu normalized Stokes parameter errorstat.errorfloatqq normalized Stokes parameterphys.polarization.stokes;arith.ratiofloatJ/A+A/690/A49/berk69Berkeley 69 polarization measurementsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR3Gaia DR3 Source IDmeta.id;meta.mainRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainPobsDegree of polarization%phys.polarizationfloate_PobsDegree of polarization error%stat.errorfloatPDebiased degree of polarization%phys.polarizationfloatthetaPolarization angledegpos.posAng;phys.polarizationfloate_thetaPolarization angle errordegstat.error;pos.posAngfloatqq normalized Stokes parameterphys.polarization.stokes;arith.ratiofloate_qq Stokes parameter errorstat.errorfloatuu normalized Stokes parameterphys.polarization.stokes;arith.ratiofloate_uu normalized Stokes parameter errorstat.errorfloatJ/A+A/690/A49/berk71Berkeley 71 polarization measurementse_qq Stokes parameter errorstat.errorfloatuu normalized Stokes parameterphys.polarization.stokes;arith.ratiofloate_uu normalized Stokes parameter errorstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR3Gaia DR3 Source IDmeta.id;meta.mainRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainPobsDegree of polarization%phys.polarizationfloate_PobsDegree of polarization error%stat.errorfloatPDebiased degree of polarization%phys.polarizationfloatthetaPolarization angledegpos.posAng;phys.polarizationfloate_thetaPolarization angle errordegstat.error;pos.posAngfloatqq normalized Stokes parameterphys.polarization.stokes;arith.ratiofloatJ/A+A/690/A49/king8King 8 polarization measurementsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR3Gaia DR3 Source IDmeta.id;meta.mainRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainPobsDegree of polarization%phys.polarizationfloate_PobsDegree of polarization error%stat.errorfloatPDebiased degree of polarization%phys.polarizationfloatthetaPolarization angledegpos.posAng;phys.polarizationfloate_thetaPolarization angle errordegstat.error;pos.posAngfloatqq normalized Stokes parameterphys.polarization.stokes;arith.ratiofloate_qq Stokes parameter errorstat.errorfloatuu normalized Stokes parameterphys.polarization.stokes;arith.ratiofloate_uu normalized Stokes parameter errorstat.errorfloatJ/A+A/690/A49/berk19Berkeley 19 polarization measurementsRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainPobsDegree of polarization%phys.polarizationfloate_PobsDegree of polarization error%stat.errorfloatPDebiased degree of polarization%phys.polarizationfloatthetaPolarization angledegpos.posAng;phys.polarizationfloate_thetaPolarization angle errordegstat.error;pos.posAngfloatqq normalized Stokes parameterphys.polarization.stokes;arith.ratiofloate_qq Stokes parameter errorstat.errorfloatuu normalized Stokes parameterphys.polarization.stokes;arith.ratiofloate_uu normalized Stokes parameter errorstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR3Gaia DR3 Source IDmeta.id;meta.main