1.3mm polarization maps of star-forming cores & SFRs Virtual Observatory Resource

Authors
  1. Hull C.L.H.
  2. Plambeck R.L.
  3. Kwon W.
  4. Bower G.C.
  5. Carpenter J.M.,Crutcher R.M.
  6. Fiege J.D.
  7. Franzmann E.
  8. Hakobian N.S.
  9. Heiles C.,Houde M.
  10. Hughes A.M.
  11. Lamb J.W.
  12. Looney L.W.
  13. Marrone D.P.
  14. Matthews B.C.,Pillai T.
  15. Pound M.W.
  16. Rahman N.
  17. Sandell G.
  18. Stephens I.W.
  19. Tobin J.J.,Vaillancourt J.E.
  20. Volgenau N.H.
  21. Wright M.C.H.
  22. Published by
    CDS
Abstract

We present {lambda}1.3mm Combined Array for Research in Millimeter-wave Astronomy observations of dust polarization toward 30 star-forming cores and eight star-forming regions from the TADPOL survey. We show maps of all sources, and compare the ~2.5" resolution TADPOL maps with ~20" resolution polarization maps from single-dish submillimeter telescopes. Here we do not attempt to interpret the detailed B-field morphology of each object. Rather, we use average B-field orientations to derive conclusions in a statistical sense from the ensemble of sources, bearing in mind that these average orientations can be quite uncertain. We discuss three main findings. (1) A subset of the sources have consistent magnetic field (B-field) orientations between large (~20") and small (~2.5") scales. Those same sources also tend to have higher fractional polarizations than the sources with inconsistent large-to-small-scale fields. We interpret this to mean that in at least some cases B-fields play a role in regulating the infall of material all the way down to the ~1000AU scales of protostellar envelopes. (2) Outflows appear to be randomly aligned with B-fields; although, in sources with low polarization fractions there is a hint that outflows are preferentially perpendicular to small-scale B-fields, which suggests that in these sources the fields have been wrapped up by envelope rotation. (3) Finally, even at ~2.5" resolution we see the so-called polarization hole effect, where the fractional polarization drops significantly near the total intensity peak.

Keywords
  1. young-stellar-objects
  2. polarimetry
  3. millimeter-astronomy
  4. submillimeter-astronomy
Bibliographic source Bibcode
2014ApJS..213...13H
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/213/13
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJS/213/13
Document Object Identifer DOI
doi:10.26093/cds/vizier.22130013

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/213/13
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/213/13
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/213/13
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/213/13/bolo?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/213/13/bolo?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/213/13/bolo?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/213/13/sources?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/213/13/sources?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/213/13/sources?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/213/13/carma?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/213/13/carma?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/213/13/carma?
Web browser access HTML
https://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/ApJS/213/13

History

2017-06-01T09:35:40Z
Resource record created
2017-06-01T09:35:40Z
Created
2017-09-01T14:41:31Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr