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Star forming regions in the Andromeda galaxy

Research Project

Project/Area Number 07640360
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Astronomy
Research InstitutionNational Astronomical Observatory

Principal Investigator

KODAIRA Keiichi  NAO,Director, 台長 (60012845)

Co-Investigator(Kenkyū-buntansha) VANSEVICIUS Vladas  NAO,Opt-IR Div., Invited Prof., 光学赤外線天文学・観測システム研究系, 客員教授
MIYAZAKI Satoshi  NAO,ADC,Assic.Prof., 天文機器開発実験センター, 助手 (20290885)
TAKATO Naruhisa  NAO,Opt-IR Div., Assis.Prof., 光学赤外線天文学・観測システム研究系, 助手 (50261152)
TAMURA Motohide  NAO,Opt-IR Div., Assis.Prof., 光学赤外線天文学・観測システム研究系, 助手 (00260018)
YAMASHITA Takuya  NAO,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 (00211631)
西村 徹郎  国立天文台, 大型光学赤外線望遠鏡計画推進部, 教授 (90260017)
Project Period (FY) 1995 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1997: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1996: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1995: ¥600,000 (Direct Cost: ¥600,000)
KeywordsAndromeda galaxy / infrared / star formation / evolved stars
Research Abstract

The aim of research is to conduct extensive infrared observations of the Andromeda galaxy, the nearest large galaxy accessible from the northern hemisphere, and to reveal the detailed structure of its star forming regions. The observatios are important to study the star formation in the large (galaxy) scale. We have conducted deep and very high resolution imaging of several star forming fields of the galaxy at the wavelengths of 1.25mum (J-band), 1.65 mum (H-band), 2.20 mum (K-band).
After extensive data reduction and analysis, we have successfully detected a number of infrared sources which have never been reported at other wavelengths. We also conducted careful photometry of each infrared source, employing the technique of PSF photometry. The data have been accepted for a publication in the Astrophysical Journal Supplements.
Furthermore, we have discovered new types of objects in the Andromeda galaxy, whose infrared color is high red, presumably considered to be candidates for protostars or super-wind phase AGB stars in the Andromeda galaxy. This kind of objects are unique and detected for the first time in the galaxy. The results have been accepted for a publication in the Astrophysical Journal Letters. These objects will be one of the best targets for the future spectroscopy at the Japanese National Large Telescope under construction.

Report

(4 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • 1995 Annual Research Report
  • Research Products

    (33 results)

All Other

All Publications (33 results)

  • [Publications] V.Vansevicius, 有本 信雄, 小平 桂一: "Extinction effects on galaxy counts for bulge-disk galaxies" The Astrophysical Journal. 474. 623-629 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 小平 桂一、山下 卓也: "Near-infrared surface-photometry of edge-on Scd galaxies,NGC3556 and NGC424" 日本天文学会欧文研究報告. 48. 581-590 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 西原 英治、山下 卓也 他: "Redshift differences between the Balmer and 「0III」lamda 5OO7 lines in high-red shift quasars" The Astrophysical Journal. 488. L27-L30 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 田村 元秀 他: "Identification of the exciting source of Herbig-Haro objects 135 and 136" Monthly Notices of the Royal Astronomy Society. 287. 894-898 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 山崎 典子、宮崎 聡 他: "Hard X-ray emission from the Galactic ridge" The Astrophysical Journal. 481. 821-831 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] V.Vansevicius 他: "A study of the open cluster NGC7209 in the Vilnius photometric system" Monthly Notices of the Royal Astronomy Society. 285. 871-878 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Kodaira 他: "Near-IR stellar photometry of M31 spiral arm around OB association A24" The Astrophysical Journal Suppl.(in press). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K・Kodaira 他: "Highly Red Object in M31:Candidates for massive YSO's or superwind-phase AGB stars." The Astrophysical Journal Letters. in press). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Vansevicius, V., Arimoto, N., Kodaira, K.: "Extinction effects on galaxy counts for buldge-disk galaxies" The Astrophysical Journal. 474. 623-629 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Kodaira, K., Yamashita, T.: "Near-infrared surface photometry of edge-on Scd galaxies, NGC3556 and NGC4244" Publ.Astron.Soc.Japan. 48. 581-590 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Nishihara, E., Yamashita, T.et al.: "Redshift differences between the Balmer and [0III] Imada 5007 lines in high-red shift quasars" The Astrophysical Journal. 488. L27-L30 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Tamura, M.et al.: "Identification of the exciting source of Herbig-Haro objects 135 and 136" Mon.Not.R.Astron.Soc.287. 894-898 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Yamazaki, N., Miyazaki, S.et al.: "Hard x-ray emission from the Galactic ridge" The Astrophysical Journal. 481. 821-831 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Vansevicius, v.et al.: "A study of the open cluster NGC 7209 in the Vilnius photometric system" Mon.Not.R.Astron.Soc.285. 871-878 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Kodaira, K.et al.: "Near-IR stellar photmetry of M31 spiral arm around OB association A24" The Astrophysical Journal. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Kodaira, K.et al.: "Highly red objects in M31 : Candidates for massive YSOs or superwind-phase AGB stars" The Astrophysical Journal Suppl.(in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] V.Vansevicius、 有本信雄、 小平桂一: "Extinction effects on galaxy counts for bulge-disk galaxies" The Astrophysical Journal. 474. 623-629 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 小林桂一、 山下卓也: "Near-infrared surface-photometry of edge-on Scd galaxies,NGC3556 and NGC4244" 日本天文学会欧文研究報告. 48. 581-590 (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] 西原英治、 山下卓也, 他: "Redshift differences between the Balmer and [OIII] lamda 5007 lines in high-red shift quasars" The Astrophysical Journal. 488. L27-L30 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 田村元秀, 他: "Identification of the exciting source of Herbig-Haro objects 135 and 136" Monthly Notices of the Royal Astronomy Society. 287. 894-898 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 山崎典子、 宮崎 聡, 他: "Hard X-ray emission form the Galactic ridge" The Astrophysical Journal. 481. 821-831 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] V.Vansevicius, 他: "A study of the open cluster NGC 7209 in the Vilnius photometric system" Monthly Notices of the Royal Astronomy Society. 285. 871-878 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Kodaira, 他: "Near-IR stellar photometry of M31 spiral arm around OB association A24" The Astrophysical Journal Suppl.(in press). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Kodaira, 他: "Highly Red Object in M31:Candidates for massive YSO's or superwind-phase AGB stars" The Astrophysical Journal Letters. (in press). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 小平桂一・山下卓也: "Near-infrared surface-photometry of edge-on Scd galaxies,NGC 3556 and NGC 4244" 日本天文学会欧文研究報告. 48. 581-590 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] V.Vansevicius、有本、小平: "Extinction effects on galaxy counts for bulge-disk galaxies" The Astrophysical Journal. 474. 623-629 (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 半田利弘、山下卓也 他: "Detection of a circumstellar gas around DM Tauri" The Astrophysical Journal. 449. 894-899 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] 田村元秀 他: "Detection of stellar variability in the central parsec of the galaxy" The Astrophysical Journal. 467. 645-657 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 高遠徳尚: "Image selection using high-speed shutter" SPIE. 印刷中. (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 宮崎 聡 他: "X-ray/soft γ-ray observation of Centaurus A and its implication on the emission mechanism" 日本天文学会欧文研究報告. 48. 801-811 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Nakagawa,T.: "Deficit of Far-Infrared[CII]Line Emission toward the Galactic Center" Astrophysical Journal. 455. L35-L38 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Tamura,M.: "One Millimeter Polarimetry of Young Stellar Objects:Low-Mass Protostars and T Tauri Stars" Astrophysical Journal. 448. 346-355 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Sugitani,K.: "Young Star Clusters in Bright-Rimmed Clouds:Small Scale Sequential Star Formation?" Astrophysical Journal. 455. L39-L41 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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