J/A+A/569/L1ivo://CDS.VizieR/J/A+A/569/L1doi:10.26093/cds/vizier.35699001CDSAlves F.O.Frau P.Girart J.M.Franco G.A.P.Santos F.P.Wiesemeyer H.2015-02-28T17:42:32Z2014-09-12T08:10:48ZCDS support team

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

cds-question@unistra.fryoung-stellar-objectspolarimetryinterstellar-mediuminfrared-sourcesmillimeter-astronomysubmillimeter-astronomyWe aim to investigate the polarization properties of a starless core in a very early evolutionary stage. Linear polarization data reveal the properties of the dust grains in the distinct phases of the interstellar medium. Our goal is to investigate how the polarization degree and angle correlate with the cloud and core gas. We use optical, near infrared and submillimeter polarization observations toward the starless object Pipe-109 in the Pipe nebula. Our data cover a physical scale range of 0.08 to 0.4pc, comprising the dense gas, envelope and the surrounding cloud. The cloud polarization is well traced by the optical data. The near infrared polarization is produced by a mixed population of grains from the core border and the cloud gas. The optical and near infrared polarization toward the cloud reach the maximum possible value and saturate with respect to the visual extinction. The core polarization is predominantly traced by the submillimeter data and have a steep decrease with respect to the visual extinction. Modeling of the submillimeter polarization indicates a magnetic field main direction projected onto the plane-of-sky and loss of grain alignment for densities higher than 6x10^4^cm^-3^ (or A_V_>30mag). Pipe-109 is immersed in a magnetized medium, with a very ordered magnetic field. The absence of internal source of radiation significantly affects the polarization efficiencies in the core, creating a polarization hole at the center of the starless core. This result supports the theory of dust grain alignment via radiative torques.2014A&A...569L...1Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/569/L1CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/725/2232 : Deep NIR survey of the Pipe Nebula. II. (Roman-Zuniga+, 2010)J/ApJ/699/742 : Properties of cores in the Pipe Nebula (Rathborne+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/569/L1https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/569/L1http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/569/L1https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/569/L1https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/569/L1http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/569/L1GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/569/L1/opt (Optical polarization data of the starless core Pipe-109)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/569/L1/opt?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/569/L1/opt?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/569/L1/opt?GETtext/xml+votable180.050000true263.8652083-25.63768610.005555555555555556Cone search capability for table J/A+A/569/L1/nir (Near-IR polarization data of the starless core Pipe-109)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/569/L1/nir?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/569/L1/nir?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/569/L1/nir?GETtext/xml+votable180.050000true263.9029583-25.5852250.005555555555555556Cone search capability for table J/A+A/569/L1/submm (Submm polarization data of the starless core Pipe-109)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/569/L1/submm?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/569/L1/submm?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/569/L1/submm?GETtext/xml+votable180.050000true263.9635275-25.54269360.005555555555555556Cone search capability for table J/A+A/569/L1/list (List of FITS maps)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/569/L1/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/569/L1/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/569/L1/list?GETtext/xml+votable180.050000true263.94742-25.552030.0055555555555555566/28862-28863https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/569/L1?format=asciiInfraredRadiodefaultJ/A+A/569/L1/optOptical polarization data of the starless core Pipe-109recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainQStokes parameter Qphys.polarization.stokesdoubleUStokes parameter Uphys.polarization.stokesdoublee_POLMeasured error (fit)stat.errordoublePOLPolarization degree (G1)phys.polarizationdoublePAPolarization position angledegpos.posAngfloats_POLTheoretical error in polarisation (photon noise)stat.error;phys.polarizationdoubleJ/A+A/569/L1/nirNear-IR polarization data of the starless core Pipe-109recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainQStokes parameter Qphys.polarization.stokesdoubleUStokes parameter Uphys.polarization.stokesdoublee_POLMeasured error (fit)stat.errordoublePOLPolarization degree (G1)phys.polarizationdoublePAPolarization position angledegpos.posAngfloats_POLTheoretical error in polarisation (photon noise)stat.error;phys.polarizationdoubleJ/A+A/569/L1/submmSubmm polarization data of the starless core Pipe-109POLPolarization degree (G1)phys.polarizationfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintoRAOffset in Right ascension (J2000) (1)arcsecpos.eq.ra;arith.difffloatoDEOffset in Declination (J2000)arcsecpos.eq.dec;arith.difffloatIntFlux density (in Jy/beam)Jyphot.fluxfloate_IntError in flux density (in Jy/beam)Jystat.errorfloate_POLMeasured error in polarization degreestat.errorfloatPAPolarization position angledegpos.posAngfloate_PAError in position angledegstat.errorfloat_RAPosition from offsets (right ascension part)degpos.eq.ra;meta.main_DEPosition from offsets (declination part)degpos.eq.dec;meta.mainJ/A+A/569/L1/listList of FITS mapsfitsDownload the FITS filemeta.ref.urlcharTitleTitle of the filemeta.title;meta.filecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension of center (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of center (J2000)degpos.eq.dec;meta.mainScaleScale of the imagearcsec/pixinstr.scalefloatNx[32] Number of pixels along X-axismeta.numberintNy[32] Number of pixels along Y-axismeta.numberintsize[11] Size of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file in subdirectory fitsmeta.id;meta.fitschar