J/ApJ/743/54ivo://CDS.VizieR/J/ApJ/743/54doi:10.26093/cds/vizier.17430054CDSTargon C.G.Rodrigues C.V.Cerqueira A.H.Hickel G.R.2017-09-20T05:14:05Z2012-03-02T09:52:09ZCDS support team

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

cds-question@unistra.fryoung-stellar-objectsmagnetic-fieldspolarimetryThis paper combines new CCD polarimetric data with previous information about protostellar objects in a search for correlations involving the interstellar magnetic field (ISMF). Specifically, we carried out an optical polarimetric study of a sample of 28 fields of 10'x10' located in the neighborhood of protostellar jets and randomly spread over the Galaxy. The polarimetry of a large number of field stars is used to estimate both the average and dispersion of the ISMF direction in each region. The results of the applied statistical tests are as follows. Concerning the alignment between the jet direction and the ISMF, the whole sample does not show alignment. There is, however, a statistically significant alignment for objects of Classes 0 and I. Regarding the ISMF dispersion, our sample presents values slightly larger for regions containing T Tauri objects than for those harboring younger protostars. Moreover, the ISMF dispersion in regions containing high-mass objects tends to be larger than in those including only low-mass protostars. In our sample, the mean interstellar polarization as a function of the average interstellar extinction in a region reaches a maximum value around 3% for A(V)=5, after which it decreases. Our data also show a clear correlation of the mean value of the interstellar polarization with the dispersion of the ISMF: the larger the dispersion, the smaller the polarization. Based on a comparison of our and previous results, we suggest that the dispersion in regions forming stars is larger than in quiescent regions.2011ApJ...743...54Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/743/54CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/743/54https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/743/54http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/743/54https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/743/54https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/743/54http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/743/54GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/743/54/table4 (Polarimetry of field stars in each field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/743/54/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/743/54/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/743/54/table4?GETtext/xml+votable180.050000true86.20304540.05552470.0055555555555555566/21431 21435 21456 21457 21641 21643 22797 22854 22860 22861 22872 22873 28913 37715 37718 37819 37855 37877 37878 37924 37926 37938 39185 39187 39386 39396 39916 41132 41134 41734 41740 42233 42704 43010 47825https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/743/54?format=asciidefaultJ/ApJ/743/54/table1Star-forming region or cloud in the direction of each fieldSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField numbermeta.id;obs.fieldintprimaryRegionRegion designationmeta.id;meta.maincharJ/ApJ/743/54/table4Polarimetry of field stars in each fieldrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField numbermeta.id;obs.fieldintm_Field[AB] Multiplicity index on Fieldmeta.code.multipcharIDIdentification of the object in the fieldmeta.idintRAB1950Hour of Right Ascension (B1950)pos.eq.ra;meta.mainDEB1950Degree of Declination (B1950)pos.eq.dec;meta.mainPLinear polarization%phys.polarizationfloate_PError in P%stat.errorfloatPAPosition angle of the polarizationdegpos.posAng;phys.polarizationfloat_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)pos.eq.decnullableindexed