NIR sources in the northeastern part of LMC Virtual Observatory Resource

Authors
  1. Kim J.
  2. Jeong W.-S.
  3. Pak S.
  4. Park W.-K.
  5. Tamura M.
  6. Published by
    CDS
Abstract

We present a near-infrared band-merged photometric and polarimetric catalog for the 39'x69' fields in the northeastern part of the Large Magellanic Cloud (LMC), which were observed using SIRPOL, an imaging polarimeter of the InfraRed Survey Facility. This catalog lists 1858 sources brighter than 14mag in the H band with a polarization signal-to-noise ratio greater than three in the J, H, or K_s_ bands. Based on the relationship between the extinction and the polarization degree, we argue that the polarization mostly arises from dichroic extinctions caused by local interstellar dust in the LMC. This catalog allows us to map polarization structures to examine the global geometry of the local magnetic field, and to show a statistical analysis of the polarization of each field to understand its polarization properties. In the selected fields with coherent polarization position angles, we estimate magnetic field strengths in the range of 3-25{mu}G using the Chandrasekhar-Fermi method. This implies the presence of large-scale magnetic fields on a scale of around 100 parsecs. When comparing mid- and far-infrared dust emission maps, we confirmed that the polarization patterns are well aligned with molecular clouds around the star-forming regions.

Keywords
  1. infrared-photometry
  2. polarimetry
  3. magellanic-clouds
  4. proper-motions
  5. visible-astronomy
  6. Wide-band photometry
Bibliographic source Bibcode
2016ApJS..222....2K
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/222/2
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJS/222/2
Document Object Identifer DOI
doi:10.26093/cds/vizier.22220002

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/222/2
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/222/2
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/222/2
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/222/2/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/222/2/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/222/2/table2?

History

2016-02-12T15:33:14Z
Resource record created
2016-02-12T15:33:14Z
Created
2016-06-15T13:24:33Z
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