Providing the initial mass function of the first-generation stars of the universe with a peculiar chemical abundance pattern of metal-poor stars

• Project/Area Number: 20540226
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Astronomy
• Research Institution: The University of Tokyo
• Principal Investigator: NOMOTO Ken'ichi 東京大学, 数物連携宇宙研究機構, 特任教授 (90110676)
• Co-Investigator(Kenkyū-buntansha): SUZUKI Tomoharu 東京大学, 大学院・理学系研究科, 助教 (20280935)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2008: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 超新星 / 宇宙化学進化 / 元素合成 / 宇宙初代星 / 大質量星 / 恒星の進化 / 金属欠乏星 / 質量関数

Research Abstract

It is critically important to determine the typical mass (i.e., Initial Mass Function) of the First Stars in the Universe, which contain no heavy elements called Population III stars, because those stars affect the formation of First galaxies and evolution of early Universe. In the present study, we simulated the supernova explosion of massive stars to predict the abundance patterns of ejecta. By comparing the model prediction and the observed patterns, we estimated that the typical masses of First Stars are 20-50M.

Research Products

• [Journal Article] Gamma-Ray Bursts and magnetar-forming Supernovae (2011)
  • Author(s): Nomoto, K., Maeda, K., Tanaka, M., and Suzuki, T.
  • Journal Title: Astrophysics and Space Science Volume: 332 Pages: 101-110
• [Journal Article] Chemical Enrichment in the Carbon-enhanced Damped Ly alpha System by Population III Supernovae (2011)
  • Author(s): Kobayashi, C., Tominaga, N., and Nomoto, K.
  • Journal Title: The Astrophysical Journal Volume: 730
• [Journal Article] Fallback Supernovae : A Possible Origin of Peculiar Supernovae with Extremely Low Explosion Energies (2010)
  • Author(s): Moriya, T., Tominaga, N., Tanaka, M., Nomoto, K., Sauer, D. N., Mazzali, P. A., Maeda, K., and Suzuki, T.
  • Journal Title: The Astrophysical Journal Volume: 719 Pages: 1445-1453
• [Journal Article] A Core-collapse Supernova Model for the Extremely Luminous Type Ic Supernova 2007bi : An Alternative to the Pair-instability Supernova Model (2010)
  • Author(s): Moriya, T., Tominaga, N., Tanaka, M., Maeda, K., and Nomoto, K.
  • Journal Title: The Astrophysical Journal Volume: 717
• [Journal Article] A massive star origin for an unusual helium-rich supernova in an elliptical galaxy (2010)
  • Author(s): Kawabata, K. S., Maeda, K., Nomoto, K., Taubenberger, S., Tanaka, M., Deng, J., Pian, E., Hattori, T., and Itagaki, K.
  • Journal Title: Nature Volume: 465 Pages: 326-328
• [Journal Article] Hypernovae, gamma-ray bursts, and first stars (2010)
  • Author(s): Nomoto, K., Tanaka, M., Tominaga, N., and Maeda, K.
  • Journal Title: New Astronomy Reviews Volume: 54 Pages: 191-200
• [Journal Article] A Core-collapse Supernova Model for the Extremely Luminous Type Ic Supernova 2007bi (2010)
  • Author(s): Moriya, T., Tominaga, N., Nomoto, K.
  • Journal Title: Astrophysical Journal Volume: 717
  • Peer Reviewed
• [Journal Article] Evolution of Very Massive Population III Stars with Mass Accretion from Pre-main Sequence to Collapse (2009)
  • Author(s): Ohkubo, T., Nomoto, K., Umeda, H., Yoshida, N., and Tsuruta, S.
  • Journal Title: Astrophysical Journal Volume: 706 Pages: 1184-1193
• [Journal Article] Nucleosynthesis in Electron Capture Supernovae of Asymptotic Giant Branch Stars (2009)
  • Author(s): Wanajo, S., Nomoto, K., Janka, H.-T., Kitaura, F. S., and Muller, B.
  • Journal Title: Astrophysical Journal Volume: 695 Pages: 208-220
• [Journal Article] Type Ib Supernova 2008D Associated With the Luminous X-Ray Transient 080109: An Energetic Explosion of a Massive Helium Star (2009)
  • Author(s): Tanaka, M., Tominaga, N., Nomoto, K., Valenti, S., Sahu, D. K., Minezaki, T., Yoshii, Y., Yoshida, M., Anupama, G. C., Benetti, S., Chincarini, G., Valle, M. D., Mazzali, P. A., and Pian, E.
  • Journal Title: Astrophysical Journal Volume: 692 Pages: 1131-1142
• [Journal Article] Properties of Type II Plateau Supernova SNLS-04D2dc : Multicolor Light Curves of Shock Breakout and Plateau (2009)
  • Author(s): Tominaga, N., Blinnikov, S., Baklanov, P., Morokuma, T., Nomoto, K., and Suzuki, T.
  • Journal Title: Astrophysical Journal Volume: 705
• [Journal Article] Spectropolarimetry of the Unique Type Ib Supernova 2005bf (2009)
  • Author(s): Tanaka, M., Kawabata, K., Nomoto, K.
  • Journal Title: Astrophysical Journal Volume: Vol.699 Pages: 1119-1124
  • Peer Reviewed
• [Journal Article] Properties of Type II Plateau Supernova SNLS-04D2dc (2009)
  • Author(s): Tominaga, N., Morokuma, T., Nomoto, K.
  • Journal Title: Astrophysical Journal Volume: Vol.705
  • Peer Reviewed
• [Journal Article] Evolution of Very Massive Population III Stars with Mass Accretion from Pre-main Sequence to Collapse (2009)
  • Author(s): Ohkubo, T., Nomoto, K., Umeda, H.
  • Journal Title: Astrophysical Journal Volume: Vol.706 Pages: 1184-1193
  • Peer Reviewed
• [Journal Article] Nucleosynthesis in Electron Capture Supernovae of Asymptotic Giant Branch Stars (2009)
  • Author(s): Wanajo, S., and Nomoto, K.
  • Journal Title: Astrophysical Journal 695 Pages: 208-220
  • Peer Reviewed
• [Journal Article] The Peculiar Type Ib Supernova 2006jc: A WCO Wolf-Rayet Star Explosion (2008)
  • Author(s): Tominaga, N., Limongi, M., Suzuki, T., Tanaka, M., Nomoto, K., Maeda, K., Chieffi, A., Tornambe, A., Minezaki, T., Yoshii, Y., Sakon, I., Wada, T., Ohyama, Y., Tanabé, T., Kaneda, H., Onaka, T., Nozawa, T., Kozasa, T., Kawabata, K. S., Anupama, G. C., Sahu, D. K., Gurugubelli, U. K., Prabhu, T. P., and Deng, J.
  • Journal Title: Astrophysical Journal Volume: 687 Pages: 1208-1219
• [Journal Article] Early Formation of Dust in the Ejecta of Type Ib SN 2006jc and Temperature and Mass of the Dust (2008)
  • Author(s): Nozawa, T., Kozasa, T., Tominaga, N., Sakon, I., Tanaka, M., Suzuki, T., Nomoto, K., Maeda, K., Umeda, H., Limongi, M., and Onaka, T.
  • Journal Title: Astrophysical Journal Volume: 684 Pages: 1343-1350
• [Journal Article] Asphericity in Supernova Explosions from Late-Time Spectroscopy (2008)
  • Author(s): Maeda, K., Kawabata, K., and Nomoto, K.
  • Journal Title: Science 319 Pages: 1220-1222
  • Peer Reviewed
• [Journal Article] How Much 56Ni Can Be Produced in Core-Collapse Supernovae? Evolution and Explosions of 30-100 Msolar Stars (2008)
  • Author(s): Umeda, H. and Nomoto, K.
  • Journal Title: Astrophysical Journal, 673 Pages: 1014-1022
  • Peer Reviewed
• [Presentation] Explosive Nucleosynthesis in Hypernovae (2010)
  • Author(s): Nomoto, K.
  • Organizer: Nuclei in the Cosmos VI
  • Place of Presentation: Heidelberg Universityドイツ(招待講演)
  • Year and Date: 2010-07-25
• [Presentation] SN2007biは本当にpair-instability supernovaか (2010)
  • Author(s): 守屋堯
  • Organizer: 日本天文学会春季年会
  • Place of Presentation: 広島大学
  • Year and Date: 2010-03-24
• [Presentation] 楕円銀河に現れたIb型超新星2005czは特殊な重力崩壊型か? (2010)
  • Author(s): 川端弘治, 前田啓一, 野本憲一, 田中雅臣, S. Taubenberger, J. Deng, E. Pian, 服部尭, 板垣公一
  • Organizer: 日本天文学会2010年秋季年会
  • Place of Presentation: 金沢大学
• [Presentation] Hypernovae and gamma-ray bursts (2010)
  • Author(s): K. Nomoto
  • Organizer: 11th Symposium on Nuclei in the Cosmos
  • Place of Presentation: Heidelberg, Germany
• [Presentation] 電子捕獲型超新星爆発とかに星雲を作った超新星1054 (2010)
  • Author(s): 冨永望, S. Blinnikov, 野本憲一
  • Organizer: 日本天文学会2010年春季年会
  • Place of Presentation: 広島大学
• [Presentation] 質量降着を伴う種族皿の巨大質量星の進化とブラックホールの形成 (2009)
  • Author(s): 大久保琢也、野本憲一
  • Organizer: 日本天文学会
  • Place of Presentation: 大阪府立大学
  • Year and Date: 2009-03-27
• [Presentation] Nucleosynthesis of the Elements in Faint Supernovae and Hypernovae (2009)
  • Author(s): K. Nomoto
  • Organizer: Chemical Abundances in the Universe: Connecting First Stars to Planets, IAU (International Astronomical Union) Symposium No.265
  • Place of Presentation: Rio de Janeiro, Brazil
• [Presentation] すばるによる銀河系内超新星からのLight Echoの可視分光観測(2) : Tycho (2009)
  • Author(s): 野本憲一, 田中雅臣, 臼田知史, 服部尭, O.Krause, 後藤美和, S.Birkmann
  • Organizer: 日本天文学会2009年春季年会
  • Place of Presentation: 大阪府立大学
• [Presentation] The Cosmic Explosions: The Violent Supernovae (2009)
  • Author(s): K. Nomoto
  • Organizer: The Opening Ceremony of the International Year of Astronomy by UN (United Nations Orgnization), UNESCO (United Nations Educational, Scientific and Cultural Organization), & IAU (International Astronomical Union)
  • Place of Presentation: UNESCO, Paris, France
• [Presentation] Chemical Yields from Supernovae and Hypernovae (2008)
  • Author(s): K. Nomoto
  • Organizer: The Galaxy Disk in Cosmological Context, IAU (International Astronomical Union) Symposium No. 254, Copenhagen
  • Place of Presentation: Denmark
• [Book] 恒星(シリーズ 現代の天文学第7巻)責任編集, 5,7章 (2009)
  • Author(s): 野本憲一
  • Publisher: 日本評論社