Oxygen-mass-to-light ratios from galaxies to clusters of galaxies

• Project/Area Number: 18740111
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Astronomy
• Research Institution: Tokyo University of Science
• Principal Investigator: MATSUSHITA Kyoko Tokyo University of Science, 理学部, 准教授 (50366423)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥3,730,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥330,000); Fiscal Year 2008: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2007: ¥1,100,000 (Direct Cost: ¥1,100,000); Fiscal Year 2006: ¥1,200,000 (Direct Cost: ¥1,200,000)
• Keywords: X線天文学 / 銀河 / 銀河団 / 高温プラズマ / 化学進化 / 銀河団ガス / 元素合成

Research Abstract

銀河団のバリオンの大部分は数千万度の高温ガスとして存在し、大量の重元素を含んでいる。このうち酸素の量は過去のII型超新星の数を反映する。銀河団では中心部以外、銀河団ガス全体に含まれる酸素の分布についてはほとんどわかっていなかった。「すざく」衛星により、はじめて銀河団ガスの重元素分布の全体像が見え始めた。さらに、重元素の供給源である、渦巻銀河、S0銀河、楕円銀河の高温ガスの酸素の組成も求まった。

Research Products

• [Journal Article] Temperature and Metallicity in the Intra-Cluster Medium of Abell 262 Observed with Suzaku (2009)
  • Author(s): Sato,K., Matsushita, K., Gastaldello, F
  • Journal Title: Publications of the Astronomical Society of Japan Vol.61, No.SP1
  • NAID: 10025603495
• [Journal Article] Suzaku Observation of Group of Galaxies NGC 507 : Temperature and Metal Distributions in the Intra-Cluster Medium (2009)
  • Author(s): Sato, K., Matsushita, K., Ishisaki, Y., Yamasaki, N. Y., Ishida, M., Ohashi, T
  • Journal Title: Publications of the Astronomical Society of Japan Vol.61, No.SP1
  • NAID: 10025603449
• [Journal Article] Suzaku Observations of Metallicity Distribution in the Intracluster Medium of the NGC 5044 Group (2009)
  • Author(s): Komiyama, M., Sato, K., Nagino, R., Ohashi,T.,Matsushita,K
  • Journal Title: Publications of the Astronomical Society of Japan Vol.61, No.SP1
  • NAID: 10025603400
• [Journal Article] Suzaku Observations of Metallicity Distribution in the Intracluster Medium of the NGC 5044 Group (2009)
  • Author(s): Komiyama M., et.al.
  • Journal Title: Publications of the Astronomical Society of Japan 61SP1
  • Peer Reviewed
• [Journal Article] Suzaku Observation of Group of Galaxies NGC 507 : Temperature and Metal Distributions in the Intra-Cluster Medium (2009)
  • Author(s): Sato K., et.al.
  • Journal Title: Publications of the Astronomical Society of Japan 61SP1
  • Peer Reviewed
• [Journal Article] Temperature and Metallicity in the Intra-Cluster Medium of Abell 262 Observed with Suzaku (2009)
  • Author(s): Sato K., Matsushita K., Gastaldello F.
  • Journal Title: Publications of the Astronomical Society of Japan 61SP1
  • NAID: 10025603495
  • Peer Reviewed
• [Journal Article] Suzaku Observations of AWM 7 Cluster of Galaxies: Temperatures, Abundances, and Bulk Motions (2008)
  • Author(s): Sato, K., Matsushita, K., Ishisaki, Y., Yamasaki, N. Y., Ishida, M., Sasaki, S., Ohashi, T
  • Journal Title: Publications of the Astronomical Society of Japan Vol.60, No.SP1
  • NAID: 10023956843
• [Journal Article] Suzaku Observation of HCG 62: Temperature, Abundance, and Extended Hard X-Ray Emission Profiles (2008)
  • Author(s): Tokoi, et al. (17人中7番目)
  • Journal Title: Publications of the Astronomical Society of Japan Vol.60, No.SP1
• [Journal Article] Suzaku Observation of the Metallicity in the Hot Interstellar Medium of the Isolated Elliptical Galaxy NGC 720 (2008)
  • Author(s): Tawara, Y., Matsumoto, C., Tozuka, M., Fukazawa, Y., Matsushita, K., Anabuki, N
  • Journal Title: Publications of the Astronomical Society of Japan Vol.60, No.SP1
  • NAID: 10023956754
• [Journal Article] Suzaku observations of clusters of galaxies (2008)
  • Author(s): Matsushita, K., Suzaku SWG team
  • Journal Title: Astronomische Nachrichten Vol.329, Issue 2 Pages: 139-142
  • NAID: 40020687700
• [Journal Article] Suzaku Observations of AWM 7 Cluster of Galaxies: Temperatures, Abundances, and Bulk Motions (2008)
  • Author(s): Sato, Kosuke
  • Journal Title: Publications of the Astronomical Society of Japan 60S
  • Peer Reviewed
• [Journal Article] Suzaku Observations of the metallicity in the Hot interstellar medium of the Isolated elliptical galaxy, NGC 720 (2008)
  • Author(s): Tawara、 Y.
  • Journal Title: Publications of the Astronomical Society of Japan 60S
  • Peer Reviewed
• [Journal Article] Type Ia and II Supernovae Contributions to Metal Enrichment in the Intracluster Medium Observed with Suzaku (2007)
  • Author(s): Sato, K., Tokoi, K., Matsushita, K., Ishisaki, Y., Yamasaki, N. Y., Ishida, M., Ohashi, T
  • Journal Title: The Astrophysical Journal Volume 667, Issue 1
• [Journal Article] X-Ray Study of Temperature and Abundance Profiles of the Cluster of Galaxies Abell 1060 with Suzaku (2007)
  • Author(s): Sato, K., et al. (17人中14番目)
  • Journal Title: Publications of the Astronomical Society of Japan Vol.59, No.2 Pages: 299-317
• [Journal Article] The abundance pattern of O, Mg, Si, and Fe in the intracluster medium of the Centaurus cluster observed with XMM-Newton (2007)
  • Author(s): Matsushita,K.,Boehringer, H., Takahashi, I., Ikebe, Y
  • Journal Title: Astronomy and Astrophysics Volume 462,Issue 3 Pages: 953-963
• [Journal Article] Suzaku Observation of the Metallicity Distribution in the IntraclusterMedium of the Fornax Cluster (2007)
  • Author(s): Matsushita, K., Fukazawa, Y., Hughes, J. P., Kitaguchi, T., Makishima, K., Nakazawa, K., Ohashi, T., Ota, N., Tamura, T., Tozuka, M., Tsuru, T. G., Urata, Y., Yamasaki, N. Y
  • Journal Title: Publications of the Astronomical Society of Japan Vol.59, No.SP1 Pages: 327-338
• [Journal Article] Type Ia and II Supernovae Contributions to Metal enrichment in the intracluster medium observed with Suzaku (2007)
  • Author(s): Sato, Kosuke
  • Journal Title: The Astrophysical Journal 667
  • Peer Reviewed
• [Journal Article] The abundance pattern of O, Mg, Si, and Fe in the intracluster medium of the Centaurus cluster observed with XMM-Newton (2007)
  • Author(s): Matsushita, K., Boehringer, H., Takahashi, I., Ikebe.Y
  • Journal Title: Astronomy and Astrophysics 462 Pages: 953-963
• [Journal Article] Suzaku Observation of the Metallicity Distribution in the Intracluster Medium of the Fornax Cluster (2007)
  • Author(s): Matsushita, K他
  • Journal Title: Publications of the Astronomical Society of Japan 59 Sp1 Pages: 327-338
  • NAID: 110006569883
• [Journal Article] Suzaku Observations of the Centaurus Cluster : Absence of Bulk Motions in the Intracluster Medium (2007)
  • Author(s): Ota, N他
  • Journal Title: Publications of the Astronomical Society of Japan 59 Sp1 Pages: 351-359
• [Journal Article] Search for Oxygen Emission from Warm-Hot Intergalactic Medium around A2218 with Suzaku (2007)
  • Author(s): Takei, Y 他
  • Journal Title: Publications of the Astronomical Society of Japan 59, Sp1 Pages: 339-349
• [Journal Article] X-Ray Spectral Study of the Extended Emission, 'the Cap', Located 11.6kpc above the Disk of M82 (2007)
  • Author(s): Tsuru, T他
  • Journal Title: Publications of the Astronomical Society of Japan 59 Sp1 Pages: 269-282
• [Journal Article] Suzaku Observation of Two Ultraluminous X-Ray Sources in NGC 1313 (2007)
  • Author(s): Mizuno, T他
  • Journal Title: Publications of the Astronomical Society of Japan 59 Sp1 Pages: 257-267
• [Presentation] 「すざく」衛星によるS0銀河NGC4382の重元素量の観測 (2009)
  • Author(s): 薙野綾
  • Organizer: 日本天文学会2009年春季年会
  • Place of Presentation: 大阪府立大学
  • Year and Date: 2009-03-27
• [Presentation] 「すざく」で観測されたS0銀河NGC1316の星間ガスの重元素組成比 (2009)
  • Organizer: 日本天文学会2009年春季年会
  • Place of Presentation: 大阪府立大学
  • Year and Date: 2009-03-26
• [Presentation] 「すざく」で観測されたFossil group NGC1550の重元素分布 (2009)
  • Author(s): 佐藤浩介
  • Organizer: 日本天文学会2009年春季年会
  • Place of Presentation: 大阪府立大学
  • Year and Date: 2009-03-26
• [Presentation] すざく衛星によるFornax銀河団のオフセット観測 (2009)
  • Author(s): 小宮山円
  • Organizer: 日本天文学会2009年春季年会
  • Place of Presentation: 大阪府立大学
  • Year and Date: 2009-03-26
• [Presentation] Metal abundances in the ICM (2008)
  • Author(s): Kyoko Matsushita
  • Organizer: Exploring the Hot Universe with IXO
  • Place of Presentation: MPE Garching
  • Year and Date: 2008-09-18
• [Presentation] すざく衛星による銀河銀河団の観測 (2008)
  • Author(s): 松下恭子
  • Organizer: 日本天文学会2008年秋季年会
  • Place of Presentation: 岡山理科大学
  • Year and Date: 2008-09-13
• [Presentation] すざく衛星による銀河銀河団の観測 (2008)
  • Author(s): 松下恭子
  • Organizer: 日本天文学会2008年秋期年会
  • Place of Presentation: 岡山理科大学
  • Year and Date: 2008-09-13
• [Presentation] 銀河団ガスの重元素の分布 (2008)
  • Author(s): 松下恭子
  • Organizer: 日本天文学会2008年度春季年会
  • Place of Presentation: 国立青少年オリンピックセンター
  • Year and Date: 2008-03-24
• [Presentation] すざく衛星によるNGC5044銀河群の重元素分布の決定 (2007)
  • Author(s): 小宮山円
  • Organizer: 研究会:マクロでミクロな銀河団
  • Place of Presentation: 山形市
  • Year and Date: 2007-10-26
• [Presentation] 銀河団ガスの重元素分布とその起源 (2007)
  • Author(s): 松下恭子
  • Organizer: 研究会:マクロでミクロな銀河団
  • Place of Presentation: 山形市
  • Year and Date: 2007-10-24
• [Presentation] 「すざく」で観測されたIa/II型超新星爆発による銀河間ガスの重元素への寄与 (2007)
  • Author(s): 佐藤浩介
  • Organizer: 研究会:マクロでミクロな銀河団
  • Place of Presentation: 山形市
  • Year and Date: 2007-10-24
• [Presentation] 「すざく」で観測されたIa/II型超新星爆発による銀河間ガスの重元素への寄与 (2007)
  • Author(s): 佐藤浩介
  • Organizer: 日本天文学会2007年秋季年会
  • Place of Presentation: 岐阜大学
  • Year and Date: 2007-09-26
• [Presentation] すざく衛星によるNGC5044銀河群の重元素の質量--光度比の決定 (2007)
  • Author(s): 小宮山円
  • Organizer: 日本天文学会2007年秋季年会
  • Place of Presentation: 岐阜大学
  • Year and Date: 2007-09-26
• [Presentation] Suzaku observations of clusters of galaxies (2007)
  • Author(s): Kyoko Matsushita
  • Organizer: XMM-Newton : The Next Decade
  • Place of Presentation: ESA, Madrid, Spain
  • Year and Date: 2007-06-04
• [Presentation] Suzaku observations of clusters of galaxies (2007)
  • Author(s): Kyoko Matsushita
  • Organizer: XMM-Newton; The Next Decade
  • Place of Presentation: ESA, Madrid, spain
  • Year and Date: 2007-06-04
• [Presentation] すざく衛星によるNGC5044銀河群の観測 (2007)
  • Author(s): 小宮山円
  • Organizer: 日本天文学会2007年春季年会
  • Place of Presentation: 東海大学
  • Year and Date: 2007-03-28
• [Presentation] 銀河からの高温プラズマ放出 (2007)
  • Author(s): 松下恭子
  • Organizer: 日本物理学会2007年春季年会
  • Place of Presentation: 首都大学東京
  • Year and Date: 2007-03-27
• [Presentation] Suzaku Observation of the Metallicity Distribution in the Intracluster Medium of the Fornax Cluster (2006)
  • Author(s): Kyoko Matsushita
  • Organizer: The extreme universe in the Suzaku Era
  • Place of Presentation: Kyoto
  • Year and Date: 2006-12-04
• [Presentation] すざく衛星によるFornax座銀河団の観測-重元素の分布と起源- (2006)
  • Author(s): 松下恭子
  • Organizer: 日本天文学会2006年秋季年会
  • Place of Presentation: 北九州
  • Year and Date: 2006-09-21