The role of radiation feedback in driving galactic outflows

• Project/Area Number: 24740112
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Astronomy
• Research Institution: Hokkaido University
• Principal Investigator: Okamoto Takashi 北海道大学, 理学(系)研究科(研究院), 助教 (50541893)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 宇宙物理 / 銀河形成 / 数値シミュレーション / 輻射輸送 / 活動銀河核 / 銀河進化 / 高赤方偏移銀河 / シミュレーション / 銀河風

Outline of Final Research Achievements

For studying roles of radiation from young massive stars in driving galactic outflows, we have developed a new radiation transfer code that can efficiently run on massively parallel computers including a cluster of GPGPUs. We have also implemented a phenomenological model of radiation pressure on dust grains in cosmological simulations of galaxy formation. We find that, without this process, evolution of a stellar mass-gas metallicity relation of star-forming galaxies cannot be explained.

Research Products

• [Int'l Joint Research] Durham University(United Kingdom)
• [Journal Article] The New Numerical Galaxy Catalog (ν^2GC): An Updated Semi-analytic Model of Galaxy and AGN with Large Cosmological N-body Simulations (2016)
  • Author(s): Ryu Makiya, Motohiro Enoki, Tomoaki Ishiyama, Masakazu A.R. Kobayashi, Masahiro Nagashima, Takashi Okamoto, Katsuya Okoshi, Taira Oogi, Hikari Shirakata
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 68 Issue: 2 Pages: 25-51
  • DOI: 10.1093/pasj/psw005
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Cosmic evolution of bars in simulations of galaxy formation (2015)
  • Author(s): Okamoto, Takashi; Isoe, Mari; Habe, Asao
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 67 Issue: 4
  • DOI: 10.1093/pasj/psv037
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] A new ray-tracing scheme for 3D diffuse radiation transfer on highly parallel architectures (2015)
  • Author(s): Tanaka, Satoshi; Yoshikawa, Kohji; Okamoto, Takashi; Hasegawa, Kenji
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 67 Issue: 4
  • DOI: 10.1093/pasj/psv027
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] The impact of dust in host galaxies on quasar luminosity functions (2015)
  • Author(s): Hikari Shirakata, Takashi Okamoto, Motohiro Enoki, Masahiro Nagashima, Masakazu A. R. Kobayashi, Tomoaki Ishiyama, Ryu Makiya
  • Journal Title: Monthly Notices of the Royal Astronomical Society: Letters Volume: 450 Issue: 1 Pages: 6-10
  • DOI: 10.1093/mnrasl/slv035
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Physical properties of UDF12 galaxies in cosmological simulations (2014)
  • Author(s): Shimizu, Ikkoh; Inoue, Akio K.; Okamoto, Takashi; Yoshida, Naoki
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: Volume 440, Issue 1 Issue: 1 Pages: 731-745
  • DOI: 10.1093/mnras/stu265
  • Peer Reviewed
• [Journal Article] Reproducing cosmic evolution of galaxy population from z = 4 to 0 (2014)
  • Author(s): Okamoto, Takashi; Shimizu, Ikkoh; Yoshida, Naoki
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 66 Issue: 4
  • DOI: 10.1093/pasj/psu046
  • NAID: 40020180595
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] ALMA Will Determine the Spectroscopic Redshift z > 8 with FIR [O III] Emission Lines (2014)
  • Author(s): Inoue, A. K.; Shimizu, I.; Tamura, Y.; Matsuo, H.; Okamoto, T.; Yoshida, N.
  • Journal Title: The Astrophysical Journal Letters Volume: Volume 780, Issue 2 Issue: 2 Pages: L18-L18
  • DOI: 10.1088/2041-8205/780/2/l18
  • Peer Reviewed
• [Journal Article] Phantom-GRAPE: Numerical software library to accelerate collisionless N-body simulation with SIMD instruction set on x86 architecture (2013)
  • Author(s): Tanikawa, Ataru; Yoshikawa, Kohji; Nitadori, Keigo; Okamoto, Takashi
  • Journal Title: New Astronomy Volume: 19 Pages: 74-88
  • DOI: 10.1016/j.newast.2012.08.009
  • Peer Reviewed
• [Journal Article] Calibrating an updated smoothed particle hydrodynamics scheme within gcd+ (2013)
  • Author(s): Daisuke Kawata, Takashi Okamoto, B. K. Gibson, D. J. Barnes, R. Cen
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: Volume 428 Issue: 3 Pages: 1968-1979
  • DOI: 10.1093/mnras/sts161
  • Peer Reviewed
• [Journal Article] The origin of pseudo-bulges in cosmological simulations of galaxy formation (2013)
  • Author(s): Takashi Okamoto
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: Volume 428 Issue: 1 Pages: 718-728
  • DOI: 10.1093/mnras/sts067
  • Peer Reviewed
• [Journal Article] Sub-mm Galaxies in Cosmological Hydrodynamics Simulations (2012)
  • Author(s): 清水一紘,吉田直紀,岡本崇
  • Journal Title: MNRAS Volume: 427 Issue: 4 Pages: 2866-2866
  • DOI: 10.1111/j.1365-2966.2012.22107.x
  • Peer Reviewed
• [Journal Article] The Aquila comparison project: the effects of feedback and numerical methods on simulations of galaxy formation (2012)
  • Author(s): C. Scannapieco, Takashi Okamoto 等
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: Volume 423 Issue: 2 Pages: 1726-1749
  • DOI: 10.1111/j.1365-2966.2012.20993.x
  • Peer Reviewed
• [Presentation] Metal enrichment of passive galaxies in cosmological simulations (2015)
  • Author(s): Takashi Okamoto
  • Organizer: Workshop for ALMA Large Proposal of gAlactic Cold gAs (ALPACA) Survey
  • Place of Presentation: 国立天文台三鷹キャンパス（東京都・三鷹市）
  • Year and Date: 2015-12-01
  • Int'l Joint Research / Invited
• [Presentation] Chemical enrichment of passive galaxies in cosmological simulations (2015)
  • Author(s): Takashi Okamoto
  • Organizer: Symposium on Quarks to Universe in Computational Science (QUCS 2015)
  • Place of Presentation: 奈良春日野国際フォーラム 甍～I・RA・KA～（奈良県・奈良市）
  • Year and Date: 2015-11-04
• [Presentation] Chemical enrichment of passive galaxies in cosmological simulations of galaxy formation (2015)
  • Author(s): Takashi Okamoto
  • Organizer: 1st Roman Juszkiewicz Symposium “The non-linear Universe”
  • Place of Presentation: Warsaw (Porland)
  • Year and Date: 2015-08-23
  • Int'l Joint Research
• [Presentation] 宇宙論的シミュレーションによる円盤銀河の進化 (2015)
  • Author(s): 岡本崇
  • Organizer: 天の川銀河研究会2015
  • Place of Presentation: 東京大学（東京都文京区）
  • Year and Date: 2015-03-23 – 2015-03-24
  • Invited
• [Presentation] クェーサースペクトルエネルギー分布の準解析的モデルへの導入と解析 (2015)
  • Author(s): 白方 光, 岡本 崇, 榎 基宏, 長島 雅裕, 大木 平, 小林 正 和, 石山 智明, 真喜屋 龍
  • Organizer: 日本天文学会2015年春季年会
  • Place of Presentation: 大阪大学（大阪府豊中市）
  • Year and Date: 2015-03-18 – 2015-03-21
• [Presentation] シミュレーションの模擬観測と、銀河の棒状構造の宇宙論的進化 (2014)
  • Author(s): 岡本崇
  • Organizer: ALMAワークショップ（high-z+nearby galaxies）
  • Place of Presentation: 国立天文台（東京都）
  • Year and Date: 2014-10-20 – 2014-10-21
  • Invited
• [Presentation] 銀河形成シミュレーションでみる bar の形成と進化 (2014)
  • Author(s): 岡本崇
  • Organizer: 日本天文学会2014年秋季年会
  • Place of Presentation: 山形大学（山形県山形市）
  • Year and Date: 2014-09-11 – 2014-09-13
• [Presentation] ダスト減光効果を考慮した準解析的モデルによるクェーサー光度関数の研究 (2014)
  • Author(s): 白方 光, 岡本 崇, 榎 基宏, 長島 雅裕, 小林 正和
  • Organizer: 日本天文学会2014年秋季年会
  • Place of Presentation: 山形大学（山形県山形市）
  • Year and Date: 2014-09-11 – 2014-09-13
• [Presentation] Reproducing evolution of galaxy population from z = 4 to 0 in hydrodynamic simulations of galaxy formation (2014)
  • Author(s): 岡本崇
  • Organizer: 第1回銀河進化研究会
  • Place of Presentation: 国立天文台（東京都）
  • Year and Date: 2014-06-04 – 2014-06-06
  • Invited
• [Presentation] Evolution of galaxy populations in cosmological simulations of galaxy formation (2014)
  • Author(s): Takashi Okamoto
  • Organizer: The impact of galactic structure on star formation
  • Place of Presentation: Hokkaido University (Sapporo, Japan)
• [Presentation] Galaxy stellar mass functions obtained by cosmological simulations (2013)
  • Author(s): 岡本 崇
  • Organizer: 日本天文学会2013年秋季年会
  • Place of Presentation: 東北大学（仙台）
• [Presentation] Galaxy formation from simulation side (2013)
  • Author(s): Takashi Okamoto
  • Organizer: Subaru Ground Layer AO Science Workshop
  • Place of Presentation: Hokkaido University (Sapporo, Japan)
  • Invited
• [Presentation] 円盤銀河とフィードバック (2013)
  • Author(s): 岡本 崇
  • Organizer: 円盤銀河の形成と進化研究会
  • Place of Presentation: 国立天文台（三鷹市）
  • Invited
• [Presentation] Formation of high-redshift disks and pseudo-bulges in nearby galaxies (2013)
  • Author(s): 岡本 崇
  • Organizer: ALMA 時代の宇宙の構造形成理論：第 1 世代から第 n 世代へ
  • Place of Presentation: 北海道大学 (札幌市)
  • Invited
• [Presentation] スーパーコンピュータによる銀河形成 (2013)
  • Author(s): 岡本 崇
  • Organizer: 第９回 創成シンポジウム 「スーパーコンピュータ "京"でせまる最先端の科学・技術」
  • Place of Presentation: 北海道大学 (札幌市)
  • Invited
• [Presentation] Shaping galaxies by feedback: satellites, discs, and bulges (2012)
  • Author(s): Takashi Okamoto
  • Organizer: Disc galaxy formation in a cosmological context
  • Place of Presentation: Haus der Astronomie (Germany)
  • Invited
• [Presentation] Cosmological pseudobulge formation (2012)
  • Author(s): Takashi Okamoto
  • Organizer: First stars IV -From Hayashi to the Future-
  • Place of Presentation: ハートピア京都 (京都市)
• [Presentation] 理論シミュレーションで見た銀河形成研究の現状 (I) High-redshift discs and their descendants at z = 0 (2012)
  • Author(s): 岡本 崇
  • Organizer: 銀河形成解剖ワークショップ "Resolved Views of Galaxy Formation and Evolution"
  • Place of Presentation: 国立天文台ハワイ観測所 (USA)
  • Invited
• [Remarks] Movies
  • URL: http://astro3.sci.hokudai.ac.jp/~okamoto/
• [Remarks] シミュレーション動画
  • URL: http://astro3.sci.hokudai.ac.jp/~okamoto/research/movies.html
• [Remarks] シミュレーション動画
  • URL: http://www.ccs.tsukuba.ac.jp/Astro/Members/takashi/research/movies.html