1989 Fiscal Year Annual Research Report

太陽系星雲の起源と変還

Research Project

Project/Area Number	01611006
Research Institution	Osaka Sangyo University
Principal Investigator	長谷川博一大阪産業大学, 教養部, 教授 (20025232)
Co-Investigator(Kenkyū-buntansha)	中沢清東京工大, 理学部, 教授 (10025455) 墻内千尋京都工芸繊維大, 工芸学部, 助教授 (80027812) 永田武国立極地研究所, 名誉教授 (10011389) 佐藤修二国立天文台, 助教授 (50025483) 中野武宣国立天文台, 教授 (30027346)
Keywords	太陽系の起源 / 惑星系青雲 / 分子雲 / 隕石磁気 / 微粒子形成 / 急冷炭素質物質 / アモルファスな氷
Research Abstract	(1)惑星系星雲の形成。(理論)回転磁気雲の収縮は初期には角運動量の放出,その後徐々に磁束を失いつつ準静的収縮,水素密度10^<10>-10^<11>cm^<-3>をこえると急速に磁束を失う。回転と磁場のあるガス雲の運動はより一般的に磁場と重力ポテンシャルとに対する2つの楕円型偏微分方程式で記述され、解は4個のパラメ-タと2個の任意関数により特徴づけられる。物理的には系の自由エネルギ-の適当な定義により解釈できる。磁場の影響はさらに星形成のトリガ-、分子流天体のジェット形成に対しても大きく,従来の磁場を含まない描像は大きな変更を要する。(観測)赤外線によって暗雲星雲中のH_2O氷の3.07μmスペクトルを観測し、進化の時間に従って深さが浅くなること,2.97μmに未同定の吸収があることを発見,電波観測によって(2.6mmCOバンド)分子流天体は星間ガスの降着期にある原始星であることを発見した。 (2)隕石磁気。残留磁気の5×10^9年間の安定性はFeーNi微粒子に対しては温度0℃以下,ピロライトに対して50℃以下であれば保たれることが実験的に明らかになった。室内実験から、FeーNi微粒子はFeとNiの微粒子の接合生長でできること,Feの硫化物も形成されることが確かめられた。 (3)星雲の熱史と固体の形成集積。室内実験では、アモルファス氷の凝縮蒸発が詳細に測定され,アモルファス氷が多孔性であることが大きな影響をもつことが明らかになった。同じくプラズマか急冷された炭素質物質は,未同定赤外ラインの多くと一致する吸収を示す。理論では、原始太陽系星雲中で同体微粒子が空間的に濃縮した場所で局所的加熱がおこり蒸発すると,金属と酸素とに富むガスが形成され、そこからの再凝縮が調べられた。また,微惑星の集積に関し、太陽重力を考慮した2体衝突が従来より2ないし3倍高くなること,run away growthを導くことが示された。

Research Products

(30 results)

All Other

All Publications (30 results)

[Publications] T.Kozasa,H.Hasegawa,K.Nomoto: "Thermal Radiation from Dust Grains Formed in the Ejecta of SN 1987A" Astroplys.J.Letters. 364. L81-L84 (1989)
[Publications] T.Kozasa,H.Hasegawa,N.Nomoto: "Formation of Dust Grains in the Ejecta of SN 1987A" Astrophys.J. 344. 325-331 (1989)
[Publications] T.Nakano: "Conditions for the formation of Massive stars throuth nonspherical accretion" Astrophys.J.345. 464-471 (1989)
[Publications] T.Nakano: "Magnetic braking of the rotation of molecular cloud cores" MNRAS. 241. 495-505 (1989)
[Publications] T.Nakano: "Contraction of rotating magnetized clouds." MNRAS. (1990)
[Publications] T.Umebayashi,T.Nakano: "Magnetic fluxloss from interstellar clouds" MNRAS. (1990)
[Publications] K.Tomisaka,S.Ikeuchi,T.Nakamura: "The equilibrium and evolution of magnetized rotating Isothermal clouds IIIーrotating case" Astrophys.J.341. 220-235 (1989)
[Publications] K.Tomisaka,S.Ikeuchi,T.Nakamura: "The equilibrium and evolution of magnetized rotating Isothermal clouds IV-quasi static evolution" Astrophys.J.(1990)
[Publications] Y.Uchida: "Magnetodynamical Jets in Flous in the Interstellar and Intergalactic Space." Advances in Space Research. 10. (9)31-(9)38 (1990)
[Publications] Y.Uchida: "Velocity Split along the ζーOph StreamerーSpinning Steamer as Angular Momentum Drain from Massive Cloud of Active Star." Publ.Astron.Soc.Japan. 42. (1990)
[Publications] Y.Uchida: "Gravoーmagnetodynamical Flows around the Forming Stars." ESO WS NO.33(Low Mass Star Formation and Prostellar Objects). 33. 141-152 (1989)
[Publications] K.Shibata,Y.Uchida: "Interaction of Molecular Bipolar Flows with Intestellar Condeusations." Publ.Astron.Soc.Japan. 42. (1990)
[Publications] M.Tamura,S.Sato: "A Two Micron Polarization Survy of T Tauri Stars" Astro.J.98. 1368-1381 (1989)
[Publications] S.Sato et.al.(First Author J.H.Hough): "Spectropoarimetry of the 3ーμm ice features in moleculer clouds II,GL2591,GL2136,W33 and Elias 29" MNRAS. 241. 71-88 (1989)
[Publications] M.Tanaka,S.Sato,T.Nagata,T.Yamamoto: "Three Micron Ice Band Features in the PーOphiuchi Sources" Astroplhys.J.(1990)
[Publications] S.Sato,M.Tanaka,T.Nagata,T.Yamamoto: "There Micron Spectroscopy of LowーMass PreーMain Seguence Stars" Astrophys.J.(1990)
[Publications] K.Kawabata,H.Ogawa,Y.Fukui,A.Mizuno: "The 4M MILLIMETER WAVE TELESCOPE AT NAGOYA UNIVERCITY" VISTAS IN ASTRONOMY. 31. 775-779 (1988)
[Publications] Y.Fukui,T.Iwata,H.Takaba,A.Mizuno,H.Ogawa,K.Kawabata & K.Sugutani: "Molecular outflows in protostellar evolution" Nature. 342. 161-163 (1989)
[Publications] T.NAGATA and B.J.CARLETON: "TETRATAENITE IN CHONDRITIC METORITESβ" Proceedings Japan Academy. vol.65. 121-124 (1989)
[Publications] T.NAGATA and M.FUNAKI: "MAGNETIC ANLYSIS OF ANTARCTIC CHONDRITES AND ACHONDRIYES ON THE BASIS OF A MAGNETIC BINARY SYSTEM MODEL.." Proceedings,NIPR Symposium on Antarctic Meteorites.NO.2. 310-325 (1989)
[Publications] C.Kaito,Y.Saito,K.Fujita: "Ordered Structure in Alloy Grains of IrronーNicked Produced by Gas Evaporation Technique" JJAP. 28. L694-L696 (1989)
[Publications] C.Kaito,Y.Saito: "Ordered Grains Produced by Coalescence of Fe and N_1 Smoke Grains" Proc.Japan Academy. 65(B). 125-128 (1989)
[Publications] S.Ida,Y.Nakagawa,K.Nakazawa: "The RoyleighーTaylor Instability in a selfーGravitating TwoーLayer Fluid Sphere" Earth,Moon,and Planets. 44. 149-174 (1989)
[Publications] K.Nakazawa,S.Ida,Y.Nakazawa: "Collisional Probability of Planetesimals Revolving in the Solar Gravitational Field,IーBasic Formulationー" Astron.Astrophyo.220. 293-300 (1989)
[Publications] K.Nakazawa,S.Ida,Y.Nakagawa: "Collisional Probability of Planetesimals Revolving in the Solar Gravitational Field,IIーValidity of the 2ーBody Approximatil" Astron.Astrophys.221. 342-347 (1989)
[Publications] M.Hasegawa,K.Nakazawa: "Distant Encouter between Keplerian Particles" Astron.Astrophys.227. 619-627 (1990)
[Publications] A.Kouchi: "Evaporation of H_2OーCO ice and its astrophysial implications" J.cryst.Growth. (1990)
[Publications] A.Kouchi: "Condensation and sublimation of H_2O ice in space" Proc.Dynamic Processes of Material Transport and Transformation in the Earth′s Interior. (1990)
[Publications] A.Sakata,S.Wada:"Chemical,Optical and Infrared Peroperties of QCCs," "Interstellar Dust",IAU #135 Symp.,ed.L.J.Allamandola and A.G.G.M.Tielens,(Reidel Dordrecht),. 191-196 (1989)
[Publications] A.Sakata,S,Wada,T.Onaka.and A.T.Tokunaga:"Quenched Carbonaceous Composite(QCC):Thermal Alteration of QCC and PAHs," "Dusty Objects in the Universe",ed.E.Bussoletti,(Kluwer Academic Publishers),.

1989 Fiscal Year Annual Research Report

太陽系星雲の起源と変還

Principal Investigator

長谷川 博一 大阪産業大学, 教養部, 教授 (20025232)

Research Products

[Publications] T.Kozasa,H.Hasegawa,K.Nomoto: "Thermal Radiation from Dust Grains Formed in the Ejecta of SN 1987A" Astroplys.J.Letters. 364. L81-L84 (1989)

[Publications] T.Kozasa,H.Hasegawa,N.Nomoto: "Formation of Dust Grains in the Ejecta of SN 1987A" Astrophys.J. 344. 325-331 (1989)

[Publications] T.Nakano: "Conditions for the formation of Massive stars throuth nonspherical accretion" Astrophys.J.345. 464-471 (1989)

[Publications] T.Nakano: "Magnetic braking of the rotation of molecular cloud cores" MNRAS. 241. 495-505 (1989)

[Publications] T.Nakano: "Contraction of rotating magnetized clouds." MNRAS. (1990)

[Publications] T.Umebayashi,T.Nakano: "Magnetic fluxloss from interstellar clouds" MNRAS. (1990)

[Publications] K.Tomisaka,S.Ikeuchi,T.Nakamura: "The equilibrium and evolution of magnetized rotating Isothermal clouds IIIーrotating case" Astrophys.J.341. 220-235 (1989)

[Publications] K.Tomisaka,S.Ikeuchi,T.Nakamura: "The equilibrium and evolution of magnetized rotating Isothermal clouds IV-quasi static evolution" Astrophys.J.(1990)

[Publications] Y.Uchida: "Magnetodynamical Jets in Flous in the Interstellar and Intergalactic Space." Advances in Space Research. 10. (9)31-(9)38 (1990)

[Publications] Y.Uchida: "Velocity Split along the ζーOph StreamerーSpinning Steamer as Angular Momentum Drain from Massive Cloud of Active Star." Publ.Astron.Soc.Japan. 42. (1990)

[Publications] Y.Uchida: "Gravoーmagnetodynamical Flows around the Forming Stars." ESO WS NO.33(Low Mass Star Formation and Prostellar Objects). 33. 141-152 (1989)

[Publications] K.Shibata,Y.Uchida: "Interaction of Molecular Bipolar Flows with Intestellar Condeusations." Publ.Astron.Soc.Japan. 42. (1990)

[Publications] M.Tamura,S.Sato: "A Two Micron Polarization Survy of T Tauri Stars" Astro.J.98. 1368-1381 (1989)

[Publications] S.Sato et.al.(First Author J.H.Hough): "Spectropoarimetry of the 3ーμm ice features in moleculer clouds II,GL2591,GL2136,W33 and Elias 29" MNRAS. 241. 71-88 (1989)

[Publications] M.Tanaka,S.Sato,T.Nagata,T.Yamamoto: "Three Micron Ice Band Features in the PーOphiuchi Sources" Astroplhys.J.(1990)

[Publications] S.Sato,M.Tanaka,T.Nagata,T.Yamamoto: "There Micron Spectroscopy of LowーMass PreーMain Seguence Stars" Astrophys.J.(1990)

[Publications] K.Kawabata,H.Ogawa,Y.Fukui,A.Mizuno: "The 4M MILLIMETER WAVE TELESCOPE AT NAGOYA UNIVERCITY" VISTAS IN ASTRONOMY. 31. 775-779 (1988)

[Publications] Y.Fukui,T.Iwata,H.Takaba,A.Mizuno,H.Ogawa,K.Kawabata & K.Sugutani: "Molecular outflows in protostellar evolution" Nature. 342. 161-163 (1989)

[Publications] T.NAGATA and B.J.CARLETON: "TETRATAENITE IN CHONDRITIC METORITESβ" Proceedings Japan Academy. vol.65. 121-124 (1989)

[Publications] T.NAGATA and M.FUNAKI: "MAGNETIC ANLYSIS OF ANTARCTIC CHONDRITES AND ACHONDRIYES ON THE BASIS OF A MAGNETIC BINARY SYSTEM MODEL.." Proceedings,NIPR Symposium on Antarctic Meteorites.NO.2. 310-325 (1989)

[Publications] C.Kaito,Y.Saito,K.Fujita: "Ordered Structure in Alloy Grains of IrronーNicked Produced by Gas Evaporation Technique" JJAP. 28. L694-L696 (1989)

[Publications] C.Kaito,Y.Saito: "Ordered Grains Produced by Coalescence of Fe and N_1 Smoke Grains" Proc.Japan Academy. 65(B). 125-128 (1989)

[Publications] S.Ida,Y.Nakagawa,K.Nakazawa: "The RoyleighーTaylor Instability in a selfーGravitating TwoーLayer Fluid Sphere" Earth,Moon,and Planets. 44. 149-174 (1989)

[Publications] K.Nakazawa,S.Ida,Y.Nakazawa: "Collisional Probability of Planetesimals Revolving in the Solar Gravitational Field,IーBasic Formulationー" Astron.Astrophyo.220. 293-300 (1989)

[Publications] K.Nakazawa,S.Ida,Y.Nakagawa: "Collisional Probability of Planetesimals Revolving in the Solar Gravitational Field,IIーValidity of the 2ーBody Approximatil" Astron.Astrophys.221. 342-347 (1989)

[Publications] M.Hasegawa,K.Nakazawa: "Distant Encouter between Keplerian Particles" Astron.Astrophys.227. 619-627 (1990)

[Publications] A.Kouchi: "Evaporation of H_2OーCO ice and its astrophysial implications" J.cryst.Growth. (1990)

[Publications] A.Kouchi: "Condensation and sublimation of H_2O ice in space" Proc.Dynamic Processes of Material Transport and Transformation in the Earth′s Interior. (1990)

[Publications] A.Sakata,S.Wada:"Chemical,Optical and Infrared Peroperties of QCCs," "Interstellar Dust",IAU #135 Symp.,ed.L.J.Allamandola and A.G.G.M.Tielens,(Reidel Dordrecht),. 191-196 (1989)

[Publications] A.Sakata,S,Wada,T.Onaka.and A.T.Tokunaga:"Quenched Carbonaceous Composite(QCC):Thermal Alteration of QCC and PAHs," "Dusty Objects in the Universe",ed.E.Bussoletti,(Kluwer Academic Publishers),.

長谷川博一大阪産業大学, 教養部, 教授 (20025232)