J/ApJ/708/758ivo://CDS.VizieR/J/ApJ/708/758doi:10.26093/cds/vizier.17080758CDSKwon J.Choi M.Pak S.Kandori R.Tamura M.Nagata T.Sato S.2017-07-11T13:08:51Z2012-03-01T14:31:10ZCDS support team

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

cds-question@unistra.frpolarimetryinfrared-photometryyoung-stellar-objectsmolecular-cloudsThe HH 1-2 region in the L1641 molecular cloud was observed in the near-infrared (IR) J, H, and Ks bands, and imaging polarimetry was performed. Seventy-six point-like sources were detected in all three bands. The near-IR polarizations of these sources seem to be caused mostly by the dichroic extinction. Using a color-color diagram, reddened sources with little IR excess were selected to trace the magnetic field structure of the molecular cloud. The mean polarization position angle of these sources is about 111{deg}, which is interpreted as the projected direction of the magnetic field in the observed region of the cloud. The distribution of the polarization angle has a dispersion of about 11{deg}, which is smaller than what was measured in previous studies. This small dispersion gives a rough estimate of the strength of the magnetic field to be about 130uG and suggests that the global magnetic field in this region is quite regular and straight. In contrast, the outflows driven by young stellar objects in this region seem to have no preferred orientation. This discrepancy suggests that the magnetic field in the L1641 molecular cloud does not dictate the orientation of the protostars forming inside.2010ApJ...708..758Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/708/758CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/A+A/504/461 : YSOs in L1630N and L1641 (Fang+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/708/758https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/708/758http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/708/758https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/708/758https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/708/758http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/708/758GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/708/758/sources (Photometry and polarimetry)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/708/758/sources?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/708/758/sources?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/708/758/sources?GETtext/xml+votable180.050000true84.1024583-6.81988890.0055555555555555566/214367.952274030004205e-20 1.7798557115773645e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/708/758?format=asciiInfrareddefaultJ/ApJ/708/758/sourcesPhotometry and polarimetryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (<[KCP2010] NN> for Simbad)meta.id;meta.mainintRAJ2000Hour of right ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000) (1)pos.eq.dec;meta.mainJmagJ-band magnitudemagphot.mag;em.IR.JfloatHmagH-band magnitudemagphot.mag;em.IR.HfloatKsmagKs-band magnitudemagphot.mag;em.IR.KfloatGroupGroup (A0, Ar or B) (2)meta.codecharl_P(J)Limit flag on P(J) (3)meta.code.errorcharP(J)J-band polarization%phys.polarization.linearfloate_P(J)? P(J) uncertainty%stat.errorfloatnullablel_P(H)Limit flag on P(H) (3)meta.code.errorcharP(H)H-band polarization%phys.polarization.linearfloate_P(H)? P(H) uncertainty%stat.errorfloatnullablel_P(Ks)Limit flag on P(Ks) (3)meta.code.errorcharP(Ks)Ks-band polarization%phys.polarization.linearfloate_P(Ks)? P(Ks) uncertainty%stat.errorfloatnullablePA(J)? J-band polarization position angledegpos.posAng;phys.polarizationfloatnullablee_PA(J)? PA(J) uncertaintydegstat.errorfloatnullablePA(H)? H-band polarization position angledegpos.posAng;phys.polarizationfloatnullablee_PA(H)? PA(H) uncertaintydegstat.errorfloatnullablePA(Ks)? Ks-band polarization position angledegpos.posAng;phys.polarizationfloatnullablee_PA(Ks)? PA(Ks) uncertaintydegstat.errorfloatnullable