Construction of a galaxy SED model consistent with chemical evolution

2010 Fiscal Year Self-evaluation Report

• Project/Area Number: 20740105
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Astronomy
• Research Institution: Nagoya University
• Principal Investigator: TAKEUCHI Tsutomu Nagoya University, 高等研究院, 特任講師 (90436072)
• Project Period (FY): 2008 – 2010
• Keywords: 理論天文学 / 光赤外線天文学 / 銀河形成進化 / 星形成 / 輻射輸送 / ダスト形成 / 化学進化

Research Abstract

宇宙の星形成史および重元素合成史を明らかにするため,銀河の重元素量の進化,いわゆる銀河の化学進化を整合的に取り入れ,ダスト(星間塵)の質量及び組成の進化,および空間的非一様性まで含めた輻射モデルを構築する.計算結果を紫外線から赤外線にわたる多波長観測データと比較することでモデルを検証し,理論として完成させる.具体的には,銀河の輻射過程を正しく扱うため,ダストによる散乱を取り入れる.ダスト分布の空間的非一様性はメガグレイン近似を拡張し,モデルに実装する.また,化学進化を解いて重元素量の進化を追うとともに,ダスト粒子の破壊過程を正しく考慮し,粒子の構成とサイズ分布進化まで含めたダストの進化を整合的に扱う.計算結果はGALEXやSpitzer,AKARIなど最新の観測装置によるデータと比較して検証する.個別の銀河の進化の枠組みを完成した暁には,宇宙論的シミュレーションに組み込んで統計的な議論が可能な形にする.

Research Products

• [Journal Article] Constructing a bivariate distribution function with given marginals and correlation : application to the galaxy luminosity function (2010)
  • Author(s): Takeuchi, T.T.
  • Journal Title: MNRAS 406 Pages: 1830-1840
  • Peer Reviewed
• [Journal Article] Star formation and dust extinction properties of local galaxies from AKARI-GALEX all-sky surveys : First results from most secure multiband sample from the far-ultraviolet to far-infrared (2010)
  • Author(s): Takeuchi, T.T., Buat, V., Heinis, S., Giovannoli, E., Yuan, F.-T., Iglesias-Paramo, J., Murata, K.L., Burgarella, D
  • Journal Title: Astronomy & Astrophysics 514 Pages: A4(13)
  • Peer Reviewed
• [Journal Article] The infrared emission of ultraviolet-selected galaxies from z = 0 to z = 1 (2009)
  • Author(s): Buat, V., Takeuchi, T.T., Burgarella, D., Giovannoli, E., Murata, K.L.
  • Journal Title: Astronomy & Astrophysics 507 Pages: 693
  • Peer Reviewed
• [Journal Article] Star formation history of galaxies from z = 0 to z = 0.7 : backward approach to the evolution of star-forming galaxies (2008)
  • Author(s): Buat, V., Boissier, S., Burgarella, D., Takeuchi, T.T., Le Floc'h, E., Marcillac, D., Huang, J., Nagashima, M., Enoki, M.
  • Journal Title: Astronomy & Astrophysics 483 Pages: 107-119
  • Peer Reviewed
• [Journal Article] Star forming galaxies in the AKARI Deep Field South: identifications and SEDs
  • Author(s): Ma.ek, K., Pollo, A., Takeuchi, T.T., Bienias, P., Shirahata, M., Matsuura, S., Kawada, M.
  • Journal Title: Astronomy & Astrophysics 514 Pages: A11(21)
  • Peer Reviewed
• [Presentation] First Results on the Star Formation and Extinction in Local Galaxies from AKARI All-Sky Surveys (2011)
  • Author(s): 竹内努
  • Organizer: 赤外線から切り込む銀河形成理論の新展開～あかりからALMAへ
  • Place of Presentation: 伊王島:長崎 招待講演
  • Year and Date: 2011-03-24
• [Presentation] First Results on the Star Formation and Extinction in Local Galaxies from AKARI All-Sky Surveys (2011)
  • Author(s): Takeuchi, T.T.
  • Organizer: Cosmic Microwave Background Radiation and Its Foreground, Interstellar Components
  • Place of Presentation: 西葛西:東京 招待講演
  • Year and Date: 2011-02-17
• [Presentation] Physics of the Formation and Evolution of Galaxies (2010)
  • Author(s): Takeuchi, T.T.
  • Organizer: Japan SKA Workshop 2010
  • Place of Presentation: 三鷹:東京 招待講演
  • Year and Date: 2010-11-04
• [Presentation] Prospect from SPICA : Theoretical point of view (2009)
  • Author(s): Takeuchi, T.T.
  • Organizer: 第22回理論懇シンポジウム「2010年代の理論天文学」
  • Place of Presentation: 名古屋:愛知 招待基調講演
  • Year and Date: 2009-12-21
• [Presentation] The Star Formation Rate functions at z = 0-1: the latter half of the history of visible and hidden star formation in the Universe (2009)
  • Author(s): Takeuchi, T.T., et al.
  • Organizer: Hunting for the Dark : The Hidden Side of Galaxy Formation
  • Place of Presentation: Malta:Malta
  • Year and Date: 2009-10-20
• [Remarks] ホームページ(公開データ発信等に使用)
  • URL: http://garm.iar.nagoya-u.ac.jp/~takeuchi
• [Remarks] プレスリリース名古屋大学高等研究院からのリンク
  • URL: http://www.iar.nagoya-u.ac.jp/SRPR/takeuchiNews.html