1992 年度実績報告書

観測的宇宙論の総合研究

研究課題

研究課題/領域番号	03302012
研究機関	東京大学
研究代表者	岡村定矩東京大学, 理学部, 教授 (20114423)
研究分担者	梅村雅之国立天文台, 助手 (70183754) 須藤靖京都大学, 基礎物理学研究所, 助教授 (20206569) 関口真木国立天文台, 助手 (40216528) 土居守東京大学, 理学部, 助手 (00242090) 福来正孝京都大学, 基礎物理学研究所, 助教授 (40100820)
キーワード	銀河団 / 宇宙の大規模構造 / 密度ゆらぎ / モザイクCCDカメラ / 天文画像データ処理
研究概要	1.既存望遠鏡による観測研究の推進木曽観測所の大型シュミット音望遠鏡による観測に基づいて,銀河団が通常考えられている球対称形状から外れている証拠を二つ見出した。 (1)おとめ座貝河団は視線方向に沿って,従来の推定よりも4倍大きな奥行きをもち,細長いフィラメントとも言える構造を有する。 (2)球対称構造をもつ典型例と考えられていたかみのけ座銀河団が大規模構造に沿って細長く延びている。 2.理論的研究 (1)宇宙初期の密度ゆらぎが,成長するに従ってどのようにそのスペクトルを変えてゆくかを数値実験で示し,銀河分布の3次,4次のモーメントが初期ゆらぎについての重要な情報を含むことを示した。 (2)粒子だけでなくガスも含めて,銀河と大規模構造の形成過程を数値実験できる計算コードを開発した。 3.観測装置の開発研究咋年度開発廠た16素子のモザイクCCDカメラで観測を行い,天文観測に充分な性能を有することを確認した。 4.大量データ解析システムの研究 (1)モザイクCCDカメラによる断片的なモザイク画像を,画像全体で整合性を保ちつつ結合編集して,1枚の広視野画像に合成するアルゴリズムとソフトウェアを開発した。 (2)簡単な二つの側光パラメータによって,銀河を早期型と晩期型に分類するソフトウェアを開発した。

研究成果

(24件)

すべてその他

すべて文献書誌 (24件)

[文献書誌] M.Fukugita,S.Ikamura,N.Yasuda: "Spatial Distribution of Spiral Galaxies in the virgo Cluster from the Tully-Fisher Relation" The Astrophysical Journal(Letters). (1993)
[文献書誌] M.Doi,M.Fukugita,S.Okamura: "Morphological Classiffcation of Galaxies with Simple photometric parameters" Monthly Notices Roy.Astron.Soc.(1993)
[文献書誌] M.Sekiguchi,M.Doi,S.Okamura et al.: "Development of a 2000X8144-Pixel Mosaic CCD Camera" Publ.Astro.Soc.Pacific. 104. 744-751 (1992)
[文献書誌] M.Doi: "A StudY on Structure and the Environmental Effect of the Coma Cluster of Galaxies" Doctral thesis(Univetsity of Tokyo)The Astrophysical Journalに投稿予定. (1993)
[文献書誌] T.Ichigawa,M.Fukugita: "Hubble flows in the Pisces-Perseus Region from the Giovanelli-Haynes Galaxy Sanple" The Astrophyscal Journal. 394. 61-80 (1992)
[文献書誌] T.Yamada,M.Saito: "A New Supercluster behind the Milky Way Mo(oceros" Publ.Astron.Soc.Japan. 45. 25-34 (1993)
[文献書誌] M.Hamabe: "Surface Photometry of the Hydra I Cluster of GalaXies.I.Photometric Data" The Astrophysical Journal Supplenent Series. 85. (1993)
[文献書誌] H.Sugai,Y.Taniguchi: "Long-Slit SPectroscopy of the Central Regions of Starburst Galaxies:Henize 2-10 and Markarian 52" The Astronomical Jouranl. 103. 1470-1483 (1992)
[文献書誌] S.Inagaki et al.: "Gravitational Clusterig og GalaXies:Comparison between Thermodynamic Theory and N-Body Simulation.III.Velocett Distributions fof Different Mass Components" The Astronomical Journal. 386. 9-18 (1993)
[文献書誌] S.Inagaki,Y.Suto,: "Non-Gaussian Signatures from Gaussian Initial Fluctuations:Evllution of Skewness and Kurtoses in Cosmological Simulations" The Astrophysical Journal. (1993)
[文献書誌] T.Watahabe,S.Inagaki: "Homogeneous Spheroid Model for Cosmological Peculiar Velocity Fleld" Publ.Astron Soc.Japan. (1993)
[文献書誌] M.Itoh,S.Inagaki,W.C.Saslow: "Gravitational Clustering of Galaxies:Comparison between Thermodynamic Theory and N-Body Simulation.IV. The Effect of Continuous Mass SPectra" The Astrophysical Journal. (1993)
[文献書誌] T.Suginohara,Y.Suto: "Large-Scale STructure in Isocurvature Baryon Models" The Astrophysical Journal. 387. 431-438 (1992)
[文献書誌] N.Makino,M.Sasaki Y.Suto: "Analyeic approach to Perturvative Expansion of Non-Linear Gravitational Fluctutions in Cosmological Density and Velocety Fields" Physical Revirw. D46. 585-602 (1992)
[文献書誌] Y.Suto et al.: "Statistics of the Comc Mach Number from Numerical Simulations of a Cold Dark Matter Universe" The Astrophysical Journal. 395. 1-20 (1992)
[文献書誌] T.Suginahara,Y.suto: "Properties of Galactec Halos in Spatially Flat Universes Dominated by Cold Dark matter:Effects of Non-Vanishing Cosmological Constant" The Astrophysical Journal. 396. 395-410 (1992)
[文献書誌] Y.Suto: "Three-Point Correlation Functions and Hierarchical Clustering Ansatz in Low DEnsity Cold Dark Matter Universes" The Astropysical Journal(Letters). 404. (1993)
[文献書誌] N.Makino,Y.Suto: "Anisotropies in the MIcrowave Background due to the Sunyaev-Zel'dovich Effect from Virialized Objects at High Redshift" The Astrophysical Journal. (1993)
[文献書誌] M.Umemura: "Three-Dimensional Hydrodynamical Calculations on the Fragmentation of Pancakes and Galaxy Formation" The Astrophysical Journal. 406. (1993)
[文献書誌] M.Umemura er al: "Smoothed Particle Hydrodynamecs with GRAPE-1A" Publ.Astron.Soc.Japan. (1993)
[文献書誌] T.Hasegawa,M,Umemura: "Luminosity Dependence of Galaxy Clustering in Extinction Corrected CFA Data" Monthly Notices Roy.Astron,Soc.(1993)
[文献書誌] F.Takahara et al: "On Estimting rhe Neutrino Mass Bound sa a Dark Matter Candidate in Galactic Halos" Publ.Astro.Soc.Japan. 45. (1993)
[文献書誌] S.Sasaki,F.Takahara: "Gravitational Lens Frequencies and Cosmological Constnat:An Examination of Amplification Bias and Galaxy Formation Redshift" Monthly Notices Royal Astron.Soc.(1993)
[文献書誌] 関口真木,岡村定矩: "広視野モザイクCCDカメラの開発と観測的宇宙論の展望" 日本物理学会誌. 47. 376-381 (1992)

1992 年度 実績報告書

観測的宇宙論の総合研究

研究代表者

岡村 定矩 東京大学, 理学部, 教授 (20114423)

研究成果

[文献書誌] M.Fukugita,S.Ikamura,N.Yasuda: "Spatial Distribution of Spiral Galaxies in the virgo Cluster from the Tully-Fisher Relation" The Astrophysical Journal(Letters). (1993)

[文献書誌] M.Doi,M.Fukugita,S.Okamura: "Morphological Classiffcation of Galaxies with Simple photometric parameters" Monthly Notices Roy.Astron.Soc.(1993)

[文献書誌] M.Sekiguchi,M.Doi,S.Okamura et al.: "Development of a 2000X8144-Pixel Mosaic CCD Camera" Publ.Astro.Soc.Pacific. 104. 744-751 (1992)

[文献書誌] M.Doi: "A StudY on Structure and the Environmental Effect of the Coma Cluster of Galaxies" Doctral thesis(Univetsity of Tokyo)The Astrophysical Journalに投稿予定. (1993)

[文献書誌] T.Ichigawa,M.Fukugita: "Hubble flows in the Pisces-Perseus Region from the Giovanelli-Haynes Galaxy Sanple" The Astrophyscal Journal. 394. 61-80 (1992)

[文献書誌] T.Yamada,M.Saito: "A New Supercluster behind the Milky Way Mo(oceros" Publ.Astron.Soc.Japan. 45. 25-34 (1993)

[文献書誌] M.Hamabe: "Surface Photometry of the Hydra I Cluster of GalaXies.I.Photometric Data" The Astrophysical Journal Supplenent Series. 85. (1993)

[文献書誌] H.Sugai,Y.Taniguchi: "Long-Slit SPectroscopy of the Central Regions of Starburst Galaxies:Henize 2-10 and Markarian 52" The Astronomical Jouranl. 103. 1470-1483 (1992)

[文献書誌] S.Inagaki et al.: "Gravitational Clusterig og GalaXies:Comparison between Thermodynamic Theory and N-Body Simulation.III.Velocett Distributions fof Different Mass Components" The Astronomical Journal. 386. 9-18 (1993)

[文献書誌] S.Inagaki,Y.Suto,: "Non-Gaussian Signatures from Gaussian Initial Fluctuations:Evllution of Skewness and Kurtoses in Cosmological Simulations" The Astrophysical Journal. (1993)

[文献書誌] T.Watahabe,S.Inagaki: "Homogeneous Spheroid Model for Cosmological Peculiar Velocity Fleld" Publ.Astron Soc.Japan. (1993)

[文献書誌] M.Itoh,S.Inagaki,W.C.Saslow: "Gravitational Clustering of Galaxies:Comparison between Thermodynamic Theory and N-Body Simulation.IV. The Effect of Continuous Mass SPectra" The Astrophysical Journal. (1993)

[文献書誌] T.Suginohara,Y.Suto: "Large-Scale STructure in Isocurvature Baryon Models" The Astrophysical Journal. 387. 431-438 (1992)

[文献書誌] N.Makino,M.Sasaki Y.Suto: "Analyeic approach to Perturvative Expansion of Non-Linear Gravitational Fluctutions in Cosmological Density and Velocety Fields" Physical Revirw. D46. 585-602 (1992)

[文献書誌] Y.Suto et al.: "Statistics of the Comc Mach Number from Numerical Simulations of a Cold Dark Matter Universe" The Astrophysical Journal. 395. 1-20 (1992)

[文献書誌] T.Suginahara,Y.suto: "Properties of Galactec Halos in Spatially Flat Universes Dominated by Cold Dark matter:Effects of Non-Vanishing Cosmological Constant" The Astrophysical Journal. 396. 395-410 (1992)

[文献書誌] Y.Suto: "Three-Point Correlation Functions and Hierarchical Clustering Ansatz in Low DEnsity Cold Dark Matter Universes" The Astropysical Journal(Letters). 404. (1993)

[文献書誌] N.Makino,Y.Suto: "Anisotropies in the MIcrowave Background due to the Sunyaev-Zel'dovich Effect from Virialized Objects at High Redshift" The Astrophysical Journal. (1993)

[文献書誌] M.Umemura: "Three-Dimensional Hydrodynamical Calculations on the Fragmentation of Pancakes and Galaxy Formation" The Astrophysical Journal. 406. (1993)

[文献書誌] M.Umemura er al: "Smoothed Particle Hydrodynamecs with GRAPE-1A" Publ.Astron.Soc.Japan. (1993)

[文献書誌] T.Hasegawa,M,Umemura: "Luminosity Dependence of Galaxy Clustering in Extinction Corrected CFA Data" Monthly Notices Roy.Astron,Soc.(1993)

[文献書誌] F.Takahara et al: "On Estimting rhe Neutrino Mass Bound sa a Dark Matter Candidate in Galactic Halos" Publ.Astro.Soc.Japan. 45. (1993)

[文献書誌] S.Sasaki,F.Takahara: "Gravitational Lens Frequencies and Cosmological Constnat:An Examination of Amplification Bias and Galaxy Formation Redshift" Monthly Notices Royal Astron.Soc.(1993)

[文献書誌] 関口真木,岡村定矩: "広視野モザイクCCDカメラの開発と観測的宇宙論の展望" 日本物理学会誌. 47. 376-381 (1992)

1992 年度実績報告書

岡村定矩東京大学, 理学部, 教授 (20114423)