J/ApJ/914/122ivo://CDS.VizieR/J/ApJ/914/122doi:10.26093/cds/vizier.19140122CDSDoi Y.Hasegawa T.Bastien P.Tahani M.Arzoumanian D.Coude S.,Matsumura M.Sadavoy S.Hull C.L.H.Shimajiri Y.Furuya R.S.,Johnstone D.Plume R.Inutsuka S.-I.Kwon J.Tamura M.2023-01-18T06:43:51Z2023-01-09T13:44:49ZCDS support team

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

cds-question@unistra.frpolarimetryastronomical-object-identificationstellar-distanceinterstellar-reddeningmagnetic-fieldsvisible-astronomyinfrared-astronomyOptical stellar polarimetry in the Perseus molecular cloud direction is known to show a fully mixed bimodal distribution of position angles across the cloud. We study the Gaia trigonometric distances to each of these stars and reveal that the two components in position angles trace two different dust clouds along the line of sight. One component, which shows a polarization angle of -37.6+/-35.2 and a higher polarization fraction of 2.0+/-1.7%, primarily traces the Perseus molecular cloud at a distance of 300pc. The other component, which shows a polarization angle of +66.8+/-19.1 and a lower polarization fraction of 0.8+/-0.6%, traces a foreground cloud at a distance of 150pc. The foreground cloud is faint, with a maximum visual extinction of <=1mag. We identify that foreground cloud as the outer edge of the Taurus molecular cloud. Between the Perseus and Taurus molecular clouds, we identify a lower-density ellipsoidal dust cavity with a size of 100-160pc. This dust cavity is located at l=170{deg}, b=-20{deg}, and d=240pc, which corresponds to an HI shell generally associated with the Per OB2 association. The two-component polarization signature observed toward the Perseus molecular cloud can therefore be explained by a combination of the plane-of-sky orientations of the magnetic field both at the front and at the back of this dust cavity.2021ApJ...914..122Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/914/122CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)J/ApJ/646/1009 : Structures of dust in Perseus molecular cloud (Kirk+, 2006)J/ApJS/182/143 : SCUPOL Legacy polarimetry of SCUBA (Matthews+, 2009)J/ApJ/723/1019 : Galactic SFR and gas surface densities (Heiderman+, 2010)J/A+A/584/A91 : Dense cores in Aquila from Herschel (Konyves+, 2015)J/MNRAS/459/342 : Dense cores in Taurus L1495 cloud (Marsh+, 2016)J/A+A/587/A106 : Perseus dust opt. depth and column density maps (Zari+, 2016)J/ApJ/865/73 : GOBELINS. V. Kinematics of Perseus (Ortiz-Leon+, 2018)J/A+A/614/A100 : Molecular clouds los magnetic field structure (Tahani+, 2018)J/A+A/625/A135 : Gal. interstellar dust Gaia-2MASS 3D maps (Lallement+, 2019)J/A+A/621/A48 : Gaia extended kinematical maps. I. (Lopez-Corredoira+, 2019)J/A+A/624/L8 : Starlight polarization (Panopoulou+, 2019)J/ApJ/872/56 : R-band linear polarization of Gaia stars (Panopoulou+, 2019)J/ApJ/904/172 : Properties of dense cores in Cepheus (Di Francesco+, 2020)J/A+A/638/A85 : 3D view of Taurus with Gaia & Herschel (Roccatagliata+, 2020)J/A+A/645/A55 : Catalogue of cold cores in Perseus (Pezzuto+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/914/122https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/914/122http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/914/122https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/914/122https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/914/122http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/914/122GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/914/122/table5 (Cross-matching results between stellar polarimetry data and the Gaia catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/914/122/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/914/122/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/914/122/table5?GETtext/xml+votable180.050000true50.8958330.545180.0055555555555555566/857-862 880-881 884 1537-1539 1542 1544-1545https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/914/122?format=asciiOpticalInfrareddefaultJ/ApJ/914/122/table5Cross-matching results between stellar polarimetry data and the Gaia catalogSimbadNameSimbad column added by the CDSmeta.idcharnullablee_Dist[-6529/11237]? Lower uncertainty on Distpcstat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRef[1/4] Reference number (1)meta.bibintNo[1/88] Source number in each referencemeta.idintRA_ICRS[50.89/57.3] Right Ascension (ICRS) at Epoch=2015.5degpos.eq.ra;meta.mainDE_ICRS[29.9/33] Declination (ICRS) at Epoch=2015.5degpos.eq.dec;meta.mainPol[0.02/18.5] Stellar polarization, percentage%phys.polarizationfloate_Pol[0.02/3.51] Uncertainty in Pol%stat.errorfloatPA[-87/87] Position angle of B-field orientationdegpos.posAng;phys.polarizationfloate_PA[0/52] Uncertainty in PAdegstat.errorintGaiaDR2Gaia DR2 source identificationmeta.id;meta.mainDist[-7713/9365]? Distance, 1000/parallaxpcpos.distancefloatnullableE_Dist[-301576/18642]? Upper uncertainty on Distpcstat.error;stat.maxdoublenullableAG[0.008/3]? Reddening in Gaia G band (from Gaia DR2)magphys.absorptionfloatnullableE_AG[0.05/1.2]? Upper uncertainty in AGmagstat.error;stat.maxfloatnullablee_AG[-0.5/-0.004]? Lower uncertainty in AGmagstat.errorfloatnullableRUWE[0.7/44.1] Renormalised Unit Weight Error; (~1.0=good fit for single-star model; See section 2.3)stat.errorfloatFlag[0/1] Bad flag (1=bad) (2)meta.code.errorint_RA.icrsRight ascension (ICRS) at Epoch=J2015.5 (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2015.5 (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decnullableindexed