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CIRCULAR POLARIZATION AND HOMOCHIRALITY IN STAR FORMING REGIONS

Research Project

Project/Area Number 12309010
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field 広領域
Research InstitutionNATIONAL ASTRONOMICAL OBSERVATORY OF JAPAN (NAOJ)

Principal Investigator

TAMURA Motohide  NAOJ, OPT/IR DIV, ASSOC.PROF., 光学赤外線天文学・観測システム研究系, 助教授 (00260018)

Co-Investigator(Kenkyū-buntansha) NAGATA Tetuya  NAGOYA U., SCIENCE, ASSOC.PROF., 大学院・理学研究科, 助教授 (80208016)
KAIFU Norio  NAOJ, DIRECTOR, 台長 (50011630)
SUTO Hiroshi  NAOJ, HAWAII OBSERVATORY, ASSISTANT, ハワイ観測所, 助手 (50300710)
Project Period (FY) 2000 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥22,900,000 (Direct Cost: ¥19,600,000、Indirect Cost: ¥3,300,000)
Fiscal Year 2003: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2002: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2001: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2000: ¥8,600,000 (Direct Cost: ¥8,600,000)
KeywordsINFRARED / STAR FORMATION / POLARIZATION / CHIRALITY / E.T.
Research Abstract

This research is based on the discovery of large circular polarization in the Orion star forming region by an international team including ours. A proposal that the homochirality of life is from space is emerged. In order to establish this idea, it is necessary to develop special polarimeters and to conduct observations of a number of star forming regions in our and in the Magellanic clouds. The outcome of such observations is a database of astronomical polarizations in star forming regions and this will be a clue to understand if the circular polarizations in star forming regions are imprinted in intercloud molecules, then brought to the Earth by meteors or comets. We have successfully developed a polarimeter for the Subaru 8.2m telescope (atop of Mauna Kea, in Hawaii), called CIAO polarimeter. We have also developed a portable ultra-accurate polarimeter. The former polarimeter is used in regular open observations. This enables astronomers to observe polarizations with a very high resolution (0.1 arcsec), about one order higher resolution than the conventional optical and infrared polarimetry. This capability on the Subaru telescope is the first among the world 8-10 meter class telescopes. The letter polarimeter can detect any polarizations due to the presence of extrasolar planets around nearby stars. This is currently one of the hottest topics in the extrasolar planets fields. The polarimeter has finished test observations at the University of Hawaii 2.2 meter telescope at Mauna Kea and we have confirmed the accuracy of the polarimeter is better than 10^(-6). We have also conducted a number of related observations in star forming regions.

Report

(5 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (34 results)

All 2004 2003 Other

All Journal Article (10 results) Publications (24 results)

  • [Journal Article] Subaru AO coronagraphic and direct imaging of YSOs2004

    • Author(s)
      Tamura, M. 他
    • Journal Title

      Proceedings of IAU Symposium 221 221

      Pages: 313-313

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Near-infrared polarimeter for the Subaru telescope2003

    • Author(s)
      Tamura, M. 他
    • Journal Title

      Proceedings of SPIE 4843

      Pages: 190-195

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] A high sensitivity polarimeter for the direct detection and characterization of extra-solar planets2003

    • Author(s)
      Hough, J.H. 他
    • Journal Title

      Proceedings of SPIE 4843

      Pages: 517-523

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] A submillimeter imaging polarimeter at the James Clerk Maxwell Telescope2003

    • Author(s)
      Greaves, J. 他
    • Journal Title

      MNRAS 340

      Pages: 353-361

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Near-infrared imaging of the circumstellar disk around Herbig Ae star HD 150193A2003

    • Author(s)
      Fukagawa, M. 他
    • Journal Title

      Astrophysical J. 590

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Near-infrared polarimeter for the Subaru telescope2003

    • Author(s)
      Tamura, M. et al.
    • Journal Title

      Proceedings of SPIE 4843

      Pages: 190-195

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] A high sensitivity polarimeter for the direct detection and characterization of extra-solar planets2003

    • Author(s)
      Hough, J.H.et al.
    • Journal Title

      Proceedings of SPIE 4843

      Pages: 517-523

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] A submillimeter imaging polarimeter at the James Clerk Maxwell Telescope

    • Author(s)
      Greaves, J. et al.
    • Journal Title

      MNRAS 340

      Pages: 353-361

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Near-infrared imaging of the circumstellar disk around Herbig Ae star HD 150193A

    • Author(s)
      Fukagawa, M. et al.
    • Journal Title

      Astrophysical J. 590

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Subaru AO coronagraphic and direct imaging of YSOs

    • Author(s)
      Tamura, M. et al.
    • Journal Title

      Proc.of IAU Symposium 221

      Pages: 313-313

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tamura, M., Suto, H.他: "Near-infrared polarimeter for the Subaru telescope"Proceedings of SPIE. 4843. 190-195 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Hough, J., Lucas, P., Bailey, J., Tamura, M.: "A high sensitivity polarimeter for the direct detection and characterization of extra-solar planets"Proceedings of SPIE. 4843. 517-523 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Nakajima, Y. 他: "Deep Imaging Observations of the Lupus 3 Cloud : Dark Cloud Revealed as Infrared Reflection Nebula"Astronomical J.. 125. 1407-1417 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Greaves, J. et al.: "A submillimetre imaging polarimeter at the James Clerk Maxwell Telescope"Monthly Notices Roy.Astron.Soc.. 340. 353-361 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Fukagawa, M., Tamura, M.et al.: "Near-Infrared Imaging of the Circumstellar Disk around Herbig Ae Star HD 150193A"Astrophysical J.. 590. L49-L52 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Murakawa, K., Tamura, M., Suto., H.et al.: "Near-infrared high resolution imaging polarimetry of the Red Rectangle"Proceedings of SPIE. 4843. 196-199 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Chrysostomou, A., Tamura, M. 他: "The magnetic field structure in W51A"Monthly Notices Roy.Astron.Soc.. 385. 1014-1021 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Itoh, Y., Tamura, M., Tokunaga, A.: "Near infrared Spectroscopy of Very Low-Luminosity Young Stellar Objects in the Taurus Molecular Cloud"Publ.Astron.Soc.Japan. 312. 103-115 (2000)

    • Related Report
      2002 Annual Research Report
  • [Publications] Murakawa, K., Tamura, M.他: "Near infrared coronagraph images of IRC +10216. Faint structures at 1-5arcsec from the central star"Astronomy & Astrophysics. 395. L9-L12 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Fukagawa, M., Tamura, M., Suto, H.他: "Subaru Near-IR Coronagraphic Image of LkH&alpha ; 198"Publ.Astron.Soc.Japan. 54. 969-973 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Itoh, Y., Tamura, M., Hayashi, S.他: "Near-Infrared Coronagraphy of the GG Tauri A Binary System"Publ.Astron.Soc.Japan. 54. 963-967 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Kitamura, Y. 他: "Investigation of the Physical Properties of Protoplanetary Disks around T Taurl Stars by a 1 Arcsecond Imaging Survey : Evolution and Diversity of the Disks in Their Accretion Stage"Astroph.J.. 581. 357-380 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Hough, J., Tamura, M.et al.: "Circular Polarisation in Star-Forming Regions : Possible Implications for Homochirality"Advances in Space Research. 27. 313-322 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Momose, M., Tamura, M.et al.: "Submillimeter Imaging Polarimetry of the NGC 7538 Region"Astrophysical Journal. 555. 855-862 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Jiang, Z., Nagata, T.et al.: "K'-Band Polarimetric Imaging of S187 IR and S233"Astronomical Journal. 122. 313-321 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Itoh, Y., Tamura, M., Kaifu, N.et al.: "Near-Infrared Observations of S 255-2 : A Cluster of Massive YSOs"Publ.Astron.Soc.of Japan. 53. 495-500 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Takami, M., Suto, H.et al.: "[Fe II] 1.257 &mu ; m and He I 1.083 &mu ; m Emission in the Central Region of the Orion Nebula : H II Region, HH Flows, Jets, and Proplyds"Astrophysical Journal. 566. 910-924 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Sugitani, K., Tamura, M.et al.: "Near-Infrared Study of M16 : Star Formation in the Elephant Trunks"Astrophysical Journal. 565. L25-L28 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Tamura,M.: "Submillimeter Polarimetry of Star Forming Regions : From Cloud Cores to Circumstellar Disks"Proceedings of Star Formation 1999. 211-216 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Chrysostomou,A.,Tamura,M. 他: "Polarimetry of young stellar objects-III. Circular polarimetry of OMC-1"Monthly Notices Roy.Astron.Soc.. 312. 103-115 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Tamura,M.: "Exoplanet Photometry and Spectroscopy with HII/L2"The ISAS Report SP. 14. 3-9 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Murakawa,K.,Tamura,M.,and Nagata,T.: "1-4 Micron Spectrophotometry of Dust in the Taurus Dark Cloud : Water Ice Distribution in Heiles Cloud 2"Astrophys.J.Suppl.. 128. 603-613 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Nakajima,T. et al.: "Infrared Star-Count Models and Their Application to the Subaru Deep Field "Astron.J.. 120. 2488-2495 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Itoh,Y.,Tamura,M. 他: "Near-Infrared Observations of S 255-2 : A Cluster of Massive YSOs"Publ.Astron.Soc.Japan. (印刷中). (2001)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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