Near-Infrared Polarimetry of the Eagle Nebula (M 16)

DOI DOI DOI DOI PDF 被引用文献3件 オープンアクセス
  • Koji Sugitani
    1Graduate School of Natural Sciences, Nagoya City University, 1 Yamanohata, Mizuho-cho, Mizuho-ku, Nagoya 467-8501
  • Makoto Watanabe
    2Subaru Telescope, National Astronomical Observatory of Japan, 650 North A’ohoku Place, Hilo, HI 96720, USA
  • Motohide Tamura
    3National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588
  • Ryo Kandori
    3National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588
  • James H. Hough
    4Center for Astrophysics Research, University of Hertfordshire, College Lane, Hatfield, Herts AL10 9AB, UK
  • Shogo Nishiyama
    3National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588
  • Yasushi Nakajima
    3National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588
  • Nobuhiko Kusakabe
    5Graduate University of Advanced Science, 2-21-1 Osawa, Mitaka, Tokyo 181-8588
  • Jun Hashimoto
    1Graduate School of Natural Sciences, Nagoya City University, 1 Yamanohata, Mizuho-cho, Mizuho-ku, Nagoya 467-8501
  • Takahiro Nagayama
    7Department of Astrophysics, Kyoto University, Sakyo-ku, Kyoto 606-8502
  • Chie Nagashima
    8Department of Astrophysics, Nagoya University, Chikusa-ku, Nagoya 464-8602
  • Daisuke Kato
    8Department of Astrophysics, Nagoya University, Chikusa-ku, Nagoya 464-8602
  • Naoya Fukuda
    9Department of Computer Simulation, Okayama University of Science, 1-1 Ridai-cho, Okayama, Okayama 700-0005

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<jats:title>Abstract</jats:title> <jats:p>We carried out deep and wide ($\sim$8$^{\prime}\times ^{\prime}$8) $JHK_{\rm s}$ imaging polarimetry in the southern region of the Eagle Nebula (M 16). The polarization intensity map reveals that two YSOs with near-IR reflection nebulae are located at the tips of two famous molecular pillars (Pillars 1 and 2) facing toward the exciting stars of M 16. The centrosymmetric polarization pattern are consistent with those around Class I objects having circumstellar envelopes, confirming that star formation is now taking place at the two tips of the pillars under the influence of UV radiation from the exciting stars. Polarization measurements of point sources show that magnetic fields are aligned along some of the pillars, but in a direction that is quite different to the global structure in M 16.</jats:p>

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