J/MNRAS/452/715ivo://CDS.VizieR/J/MNRAS/452/715doi:10.26093/cds/vizier.74520715CDSPanopoulou G.V.Tassis K.Blinov D.Pavlidou V.King O.G.,Paleologou E.Ramaprakash A.Angelakis E.Balokovic M.Das H.K.,Feiler R.Hovatta T.Khodade P.Kiehlmann S.Kus A.Kylafis N.,Liodakis I.Modi D.Myserlis I.Papadakis I.Papamastorakis I.,Pazderska B.Pazderski E.Pearson T.J.Rajarshi C.Readhead A.C.S.,Reig P.Zensus J.A.2024-08-15T20:14:48Z2015-07-13T06:41:28ZCDS support team

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

cds-question@unistra.frpolarimetryinterstellar-mediumThe stages before the formation of stars in molecular clouds are poorly understood. Insights can be gained by studying the properties of quiescent clouds, such as their magnetic field structure. The plane-of-the-sky orientation of the field can be traced by polarized starlight. We present the first extended, wide-field (~10deg^2^) map of the Polaris Flare cloud in dust-absorption induced optical polarization of background stars, using the Robotic Polarimeter (RoboPol) polarimeter at the Skinakas Observatory. This is the first application of the wide-field imaging capabilities of RoboPol. The data were taken in the R band and analysed with the automated reduction pipeline of the instrument. We present in detail optimizations in the reduction pipeline specific to wide-field observations. Our analysis resulted in reliable measurements of 641 stars with median fractional linear polarization 1.3%. The projected magnetic field shows a large-scale ordered pattern. At high longitudes it appears to align with faint striations seen in the Herschel-Spectral and Photometric Imaging Receiver (SPIRE) map of dust emission (250um), while in the central 4.5 deg2 it shows an eddy-like feature. The overall polarization pattern we obtain is in good agreement with large-scale measurements by Planck of the dust emission polarization in the same area of the sky.2015MNRAS.452..715Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/452/715CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/452/715https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/452/715http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/452/715https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/452/715https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/452/715http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/452/715GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/452/715/table2 (Optical polarization data of the Polaris Flare (corrected version 20-Jun-2016))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/452/715/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/452/715/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/452/715/table2?GETtext/xml+votable180.050000true0.1767189.148890.0055555555555555565/1021 1023 6/4089-4091 8186-8187 8189-8191 12286-12287 16373 16375 16381 16383https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/452/715?format=asciidefaultJ/MNRAS/452/715/table2Optical polarization data of the Polaris Flare (corrected version 20-Jun-2016)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension (J2000) (1)degpos.eq.ra;meta.mainDEJ2000Declination (J2000) (1)degpos.eq.dec;meta.mainGLONGalactic longitude (1)degpos.galactic.lonGLATGalactic latitude (1)degpos.galactic.latdoublePol[0.5/4.5] Polarization degree percentage (2)%phys.polarizationfloate_Pol[0.2/1.9] Error in polarization degree%stat.errorfloatEVPA[-90/90] Electric vector polarization angle (3)degpos.posAng;phys.polarizationinte_EVPA[2/19] Error in EVPAdegstat.errorintgalPA[0/180] Galactic polarization angle (4)degpos.posAng;phys.polarizationint