천문학회보 (The Bulletin of The Korean Astronomical Society)

한국천문학회 (The Korean Astronomical Society)
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The Large Magellanic Cloud Polarization Source Catalog : Characteristics of Polarization in The Observed Fields

  • Kim, Jaeyeong (School of Space Research, Kyung Hee University) ;
  • Pak, Soojong (School of Space Research, Kyung Hee University) ;
  • Jeong, Woong-Seob (Korea Astronomy and Space Science Institute) ;
  • Park, Won-Kee (Korea Astronomy and Space Science Institute) ;
  • Pavel, Michael D. (Department of Astronomy, The University of Texas at Austin)
  • 발행 : 2014.04.10
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초록

We compiled near-infrared photometric and polarimetric catalog of sources in ~3 $9^{\prime}{\times}69^{\prime}$ size field in the eastern side of the Large Magellanic Cloud (LMC). This catalog lists all 1969 sources which are brighter than 14 mag and which signal to noise ratio of degree of polarization is greater than 3 in the J, H, and Ks bands. The photometric and polarimetric data were simultaneously obtained in J, H, and Ks bands using SIRPOL, an imaging polarimeter of the InfraRed Survey Facility (IRSF), in 2008 December and 2011 December. We classified the objects into several groups based on their locations on the color-magnitude diagram and compared their general properties of polarization. We measured wavelength dependence of this field to verify interstellar polarization of the LMC which occurred from the dichroic extinction. We also discuss the polarization structure in this field with the results from molecular cloud studies.

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