スピッツァー、あかり、ハーシェル衛星による星生成トレーサーの比較研究

2015 Fiscal Year Annual Research Report

• Project/Area Number: 14F04022
• Research Institution: The University of Tokyo
• Principal Investigator: 尾中 敬 東京大学, 理学(系)研究科(研究院), 教授 (30143358)
• Co-Investigator(Kenkyū-buntansha): WU RONIN 東京大学, 理学(系)研究科(研究院), 外国人特別研究員
• Project Period (FY): 2014-04-25 – 2016-03-31
• Keywords: 赤外線観測 / 分光観測 / 星生成領域 / 光解離領域

Outline of Annual Research Achievements

近年の赤外線衛星の近傍の銀河及び星生成活動領域の観測から、従来考えられていた光解離領域に加えて、衝撃波により暖められていると考えられるガスを持つものも検出され、衝撃波がエネルギー収支に重要な役割を果たしていることが示唆されると同時に、銀河の赤外線スペクトルは非常に多様であることがわかってきた。銀河の星生成活動を理解するには、近赤外線から遠赤外線までの広い波長域のスペクトルを統一的に解析することが必要である。本研究では、「あかり」、スピッツァー、ハーシェル衛星による銀河系、近傍銀河の分光、撮像データを総合的に解析し、銀河内の個々の領域におけるガス、ダストの物理状態を導き、星生成活動過程との関連を明らかにする。昨年度はハーシェル衛星に搭載された長波長分光器SPIREのデータを波長による空間分解能の変化を考慮して解析する手法を確立させ、これを近傍銀河M83のデータや、竜骨座星生成領域のデータに適用した。今年度は、これに加え、竜骨座星生成領域のハーシェル衛星のPACSのデータを同様に解析し、特に光解離領域から放射される重元素の禁制輝線を用いて光解離領域モデルと比較して、この領域の物理状態を抽出することを行なった。さらにMXS, 「あかり」衛星の中間赤外線データも併せ、この領域のダストの性質を解析した。これと並行して「あかり」衛星のデータとハーシェル、スピッツァーが共通に観測した近傍銀河のリストを作成し、3つの衛星による近傍銀河の観測データの集約を行なった。

Research Progress Status

27年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

27年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] CNRS/Observatory of Paris(フランス)
  • Country Name: FRANCE
  • Counterpart Institution: CNRS/Observatory of Paris
• [Journal Article] Physics revealed by broad-range CO ladders and fine-structure lines In M83 (2016)
  • Author(s): Wu, R
  • Journal Title: Publications of the Korean Astronomical Society Volume: in press Pages: in press
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The spatially-resolved correlation between [NII] 205 micron meter line emission and the 24 micron meter continuum in nearby galaxie (2016)
  • Author(s): Hughes, T. M., Baes, M., Schirm, M. R. P., Parkin, T. J., Wu, R., de Looze, I., WIlson, C. D., Viaene, S., Bendo, G. J., Boselli, A., Cornier, D., Ibar, E., Karczewski, O. J., Lu, N., and Spinoglio, L.
  • Journal Title: Astronomy and Astrophysics Volume: 584 Pages: A45 (7pp)
  • DOI: 10.1051/0004-6361/201527644
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A milestone toward understanding PDR properties in the extreme environment of LMC-30Dor (2016)
  • Author(s): Chevance, M., Madden, S. C., Lebouteiller, V., Godard, B., Cormier, D., Galliano, F., Hony, S., Indebetouw, R., Le Bourlot, J., Lee, M. Y., Le Petit, F., Pellegrini, E., Roueff, E., and Wu, R.
  • Journal Title: Astronomy and Astrophysics Volume: in press Pages: in press
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] AKARI and Spinning Dust: Investigating the Nature of Anomalous Microwave Emission via Infrared Surveys (2016)
  • Author(s): Bell, A. C., Onaka, T., Doi, Y., Sakon, I., Usui, F., Sakon, I., Ishihara, D., Kaneda, H., Giard, M., Wu, R., Ohsawa, R.,Mori, T. I., Hammonds, M., and Lee, H.-G.
  • Journal Title: Publications of the Korean Astronomical Society Volume: in press Pages: in press
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] `Star formation rates from young-star counts and the structure of the ISM across the NGC 346/N66 complex in the SMC (2015)
  • Author(s): Hony, S., Gouliermis, D. A., Galliano, F., (20 others) and Wu, R.
  • Journal Title: Mostly Notices of the Royal Astronomical Society Volume: 448 Pages: 1847--1862
  • DOI: 10.1093/mnras/stv107
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Spatially resolved physical conditions of molecular gas and potential star formation tracers in M 83, revealed by the Herschel SPIRE FTS (2015)
  • Author(s): Wu, R., Madden, S. C., Galliano, F., Wilson, C. D., Kamenetzky, J., Lee, M.-Y., Schirm, M., Hony, S., Lebouteiller, V., Spinoglio, L., Cormier, D., Glenn, J., Maloney, P. R., Pereira-Santaella, M., R\\'emy-Ruyer, A., Baes, M., Boselli, A., Bournaud, F., De Looze, I., Hughes, T. M., Panuzzo, P., and Rangwala, N.,
  • Journal Title: Astronomy and Astrophysics Volume: 575 Pages: A88 (28pp)
  • DOI: 10.1051/0004-6361/201423847
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The cool and warm molecular gas in M82 with Herschel-SPIRE (2015)
  • Author(s): Kamenetzky, J., Glenn, J., Rangwala, N., Maloney, P., Bradford, M., Wilson, C. D., Bendo, G. J., Baes, M., Boselli, A., Cooray, A., Isaak, K. G., Lebouteiller, V., Madden, S., Panuzzo, P., Schirm, M. R. P., Spinoglio, L., and Wu, R.
  • Journal Title: Highlights of Astronomy Volume: 16 Pages: 618
  • DOI: 10.1017/S1743921314012472
  • Int'l Joint Research
• [Presentation] The origin of the 22 micron meter broad feature and its association with the molecular clouds of the Great Nebula in Carina. (2016)
  • Author(s): Wu, R., Onaka, T., Nakamura, T., Tsui, F., Mori, T. I., Sakon, I., Ishihara, D., Okada, Y., Galliano, F., and Lebouteiller, V.
  • Organizer: 日本天文学会2016年春季年会
  • Place of Presentation: 首都大学東京（東京都八王子市）
  • Year and Date: 2016-03-14 – 2016-03-17
• [Presentation] The origin of the broad feature at 22 micron meter and its association with the molecular clouds of the Great Nebula in Carina (2015)
  • Author(s): Wu, R., Onaka, T., Nakamura, T., Tsui, F., Mori, T. I., Sakon, I., Ishihara, D., Okada, Y., Galliano, F., and Lebouteiller, V.
  • Organizer: 日本天文学会2015年秋季年会
  • Place of Presentation: 甲南大学（兵庫県神戸市）
  • Year and Date: 2015-09-09 – 2015-09-11
  • Int'l Joint Research
• [Presentation] Catalog of the Akari-, Spitzer-, and, Herschel-Inspected Nearby Galaxies (CASHING) (2015)
  • Author(s): Wu, R., Mori, T. I., Onaka, T., Usui, F., and Sakon, I.
  • Organizer: 日本天文学会2015年秋季年会
  • Place of Presentation: 甲南大学（兵庫県神戸市）
  • Year and Date: 2015-09-09 – 2015-09-11
  • Int'l Joint Research
• [Presentation] AKARI and Spinning Dust: A look at microwave dust emission via the Infrared (2015)
  • Author(s): Bell, A. C., Onaka, T., Wu, Roning, Hammonds, M., Sakon, I., Ishihara, D., Doi, Y., and Kaneda, H.
  • Organizer: IAU General Assembly
  • Place of Presentation: Honolulu, Hawaii, U.S.A.
  • Year and Date: 2015-08-10 – 2015-08-14
  • Int'l Joint Research
• [Presentation] AKARI observations of dust processing in merger galaxies: NGC2782 and NGC7727 (2015)
  • Author(s): Onaka, T., Nakamura, T., Sakon, I., Ohsawa, R., Mori, T., Wu, R., and Kaneda, H.
  • Organizer: IAU Symposium 315, From Interstellar Clouds to Star-forming Galaxies: Universal Processes?
  • Place of Presentation: Honolulu, Hawaii, U.S.A.
  • Year and Date: 2015-08-03 – 2015-08-07
  • Int'l Joint Research
• [Presentation] Spatially resolved physical conditions of molecular gas: a zoom-in from circumnuclear region of M83 to Carina nebula,' (2015)
  • Author(s): Wu, R., Madden, S., Galliano, F., Wilson, C., Onaka, C., and Nakamura, T.
  • Organizer: IAU Symposium 315, From Interstellar Clouds to Star-forming Galaxies: Universal Processes?
  • Place of Presentation: Honolulu, Hawaii, U.S.A.
  • Year and Date: 2015-08-03 – 2015-08-07
  • Int'l Joint Research
• [Presentation] Spatially resolved physical conditions of molecular gas: A zoom-in from circumnuclear region of M83 to Carina Nebula (2015)
  • Author(s): Wu, R.
  • Organizer: 30 years of PhotoDissociation Regions, A symposium to honor David Hollenbach's lifetime in science
  • Place of Presentation: Asilomar, California, U.S.A.
  • Year and Date: 2015-06-28 – 2015-07-03
  • Int'l Joint Research