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arXiv · 1110.4463

Near-IR Polarimetry Around 30 Doradus: I. Separation of the Galactic Sources

Kim Jaeyeong·Pak Soojong·Choi Minho·Kang Wonseok·Kandori Ryo·Tamura Motohide·Nagata Tetsuya·Kwon Jungmi·Kato Daisuke·Daniel T Jaffe
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Abstract

A 20 arcmin \times 20 arcmin region around 30 Doradus in the Large Magellanic Cloud (LMC) is observed and analyzed in the near-infrared. We obtain polarimetry data in the J, H, and K_s bands using the SIRIUS polarimeter SIRPOL at the Infrared Survey Facility 1.4 m telescope. We measure the Stokes parameters of 2562 point-like sources to derive the degree of polarization and the polarization position angles. We discuss the statistics of the groups classified by color-magnitude diagram and proper motions of the sources, in order to separate the Galactic foreground sources from those present in the LMC. We notice that groups classified by the proper motion data show a tendency towards different polarimetric properties.

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Kim Jaeyeong, Pak Soojong, Choi Minho, Kang Wonseok, Kandori Ryo, Tamura Motohide, Nagata Tetsuya, Kwon Jungmi, Kato Daisuke, Daniel T Jaffe. 2011-10-20. Near-IR Polarimetry Around 30 Doradus: I. Separation of the Galactic Sources. https://arxiv.org/abs/1110.4463

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