K.Tomisaka

Recent Publications (1995~)

• Radiation Magnetohydrodynamics Simulation of Proto-Stellar Collapse: Two-Component Molecular Outflow,Tomida, Kengo; Tomisaka, Kohji; Matsumoto, Tomoaki; Ohsuga, Ken; Machida, Masahiro N.; Saigo, Kazuya, submitted to ApJ arXiv:1001.4796v1(pdf)
• Generation of Seed Magnetic Fields in Primordial Supernova Remnants,Hanayama, Hidekazu; Takahashi, Keitaro; Tomisaka, Kohji, submitted to ApJ arXiv:0912.2686(pdf)
• High Density Tracer Line Ratio in Inhomogeneous Molecular Gas at the Centers of Active Galaxies, M. Yamada, and K. Tomisaka, submitted to ApJL. (pdf)
• Evolution of First Cores and Formation of Stellar Cores in Rotating Molecular Cloud Cores,K. Saigo, K. Tomisaka, and T. Matsumoto, ApJ in press. (pdf)
• Formation Scenario for Wide and Close Binary Systems, M. N. Machida, K. Tomisaka, T. Matsumoto, S. Inutsuka, submitted to ApJ (astro-ph abs, pdf)
• HCN to HCO⁺ Millimeter Line Diagnostics of AGN Molecular Torus. I: Radiative Transfer Modeling: M. Yamada, K. Wada, and K. Tomisaka,ApJ in press [abs], [pdf]
• Evolution of Rotating Molecular Cloud Core with Oblique Magnetic Field: Masahiro N. Machida, Tomoaki Matsumoto, Tomoyuki Hanawa, Kohji Tomisaka, Feb. 2006, submitted to ApJ.[pdf], [abstract]
• The Evolution of the First Core in Rotating Molecular Core, Kazuya Saigo, Kohji Tomisaka, 2006, Mar. ApJ in press.[pdf astro-ph/0510469], [abstract]
• Alignment of Outflows with Magnetic Fields in Cloud Cores, Matsumoto, Tomoaki; Nakazato, Takeshi; Tomisaka, Kohji, 2005, Dec. ApJL in press. [pdf astro-ph/0512581], [abstract]
• Long-Term Evolution of Supernova Remnants in Magnetized Interstellar Medium, Hanayama, H. and Tomisaka, K., 2005, Dec., ApJ in press[pdf astro-ph/0507421], [abstract]
• Collapse and Fragmentation of Rotating Magnetized Clouds.II. Binary Formation and Fragmentation of First Cores, Machida, M.N., Matsumoto, T., Hanawa, T. and Tomisaka, K., 2005, Sept., MNRAS 382--402, [pdf astro-ph/0506440], [abstract]
• Collapse and Fragmentation of Rotating Magnetized Clouds.I. Spin and Mass-to-Flux Relation, Machida, M.N., Matsumoto, T., Tomisaka, K. and Hanawa, T., 2005, Sept, MNRAS 369--381 [pdf astro-ph/0506439], [abstract]
• Role of Magnetic Field in Star Formation Process, Tomisaka, K., Machida, M., Matsumoto, T., Hanawa, T., presented in The Magnetized Plasma in Galaxy Evolution, Proceedings of the conference held in Krako'w, Poland, Sept. 27th - Oct. 1st, 2004, Edited by K. Chyz.y, K. Otmianowska-Mazur, M. Soida, and R.-J. Dettmar, Jagiellonian University, Krako'w 2005, p. 111-116.[pdf], [abstract]
• Molecular Gas Structure around the AGN with the Nuclear Starbursts: Pseudo Observations by 3-D Non-LTE Calculations of CO Lines, Wada, K. and Tomisaka, K., 2005, Jan., ApJ, 619, 93 [pdf] [astro-ph/0410254], [abstract]
• Low-Mass Star Formation, Triggered by Supernova in Primordial Clouds, Machida, M.N., Nakamura, F., Tomisaka, K., and Fujimoto, M.Y., 2004 ApJ, 622, 39--57 [pdf] [astro-ph/0412282], [abstract]
• Directions of Outflow, Disk, Magnetic Field, and Rotation of YSOs in Collapsing Molecular Cloud Cores, Matsumoto, T. and Tomisaka, K., 2004, Nov, ApJ, 616, 266--282 ,[abstract]
• Numerical Simulations of Collapse and Fragmentation of Magnetized Molecular Cloud Cores --- Formation of Binary Systems, Tomisaka, K., Machida, M.N., Matsumoto, T. and Saigo, K., 2004 in press, Proceedings of "Gravitational Collapse: From Massive Stars to Planets" First Astrophysics meeting of the Observatorio Astronomico Nacional (Mexico) held in Ensenada, Baja California December 8 - 12, 2003 [pdf]
• First MHD simulation of collapse and fragmentation of magnetized molecular cloud cores, Machida, M.N., Tomisaka, K. and Matsumoto, T., 2004, Mon. Not. R. Astron. Soc. 348, L1(2004)
• Self-gravitational Collapse of a Magnetized Cloud Core: High Resolution Simulations with Three-dimensional MHD Nested Grid, Matsumoto, T., Machida, M. N., Tomisaka, K., and Hanawa, T., Computer Physics Communications journal, (2004) 164, 229-236
• Fragmentation of Molecular Clouds and Binary Star Formation, Machida, M.N., Tomisaka, K., and Matsumoto, T., 2003 in Star Formation at High Angular Resolution, International Astronomical Union. Symposium no. 221, held 22-25 July, 2003 in Sydney, Australia
• Binary star formation and mass outflows - MHD nested grid solution, Machida, M.N., Tomisaka, K., and Matsumoto, T., The Environments and Evolution of Double and Multiple Stars. IAU Colloquium 191 held in Merida, Yucatan, Mexico February 3 - 7, 2003
• Evolution of Supernova Remnants in Magnetized Interstellar Medium, Tomisaka, K., 2003 in preparation
• Collapse of Rotating Magnetized Molecular Cloud Cores and Mass Outflows, Tomisaka, K., 2002, ApJ 575, pp. 306-326. [3.4MB]
• Outflows from YSO's and the Angular Momentum Transfer, Tomisaka, K., 2000, Proceedings of the IAU Simposium on ``The Formation of Binary Stars'' (April 10-15, 2000) AIP, Potsdam, Germany, pp. -- , [gzipped postscript file](136KB), [pdf file] (190KB).
• Outflows from YSO's and the Angular Momentum of New-Born Stars, Tomisaka, K., 2000, Proceedings of 33rd ESLAB Conference on ``Star Formation from the Small to the Large Scale'' (November 2-5, 1999) ESTEC, Noordwijk, The Netherlands , pp. -- [postscript file] (392839Byte), [pdf file] (674918Byte)
• Evolution of Angular Momentum Distribution during Star Formation , Tomisaka, K., 2000, Jan. 1, Astrophysical Journal (Letters) 528 L41--L44 [postscript file] (378803Byte), [pdf file] (82370Byte)
• Gravitational Collapse of Spherical Interstellar Clouds Ogino, A. Tomisaka, K., and Nakamura, F., 1999, PASJ,51 637--651[gziped postscript file](0.4MB), [pdf](0.684MB)
• Gravitational Contraction of Magnetized Clouds, Tomisaka, K., 1999, in Numerical Astrophysics, (Kluwer Academic Publishers), eds. S.M.Miyama, K.Tomisaka, and T.Hanawa [gziped postscript file] (437741Byte)
• Collapse of Isothermal Magnetized Clouds: Universality of Self-similar Collapse, Nakamura, F., Matsumoto, T., Hanawa, T., Tomisaka,K., 1999, Jan., Astrophysical Journal, 510, 274--290. [gziped postscript file](3.3MB)
• Collapse-Driven Outflow in Star-Forming Molecular Cores, Tomisaka,K., 1998 Aug., ApJL v.502, L163 [tar archived postscript files compressed by gzip](312924 Bytes) [pdf file](566KB).
• Recent X-Ray Observations of SN 1986J with ASCA and ROSAT, Houck, J.C., Bregman, J.N., Chevalier, R.A., and Tomisaka, K., 1998 Jan, Astrophysical Journal v.493, p.431
• Superbubbles in magnetized interstellar media--- Blowout or confinement ? ---, Tomisaka,K., 1998 Aug., MNRAS, vol.298, pp.797-810 [tar archived postscript files compressed by gzip](1149190 Byte)
• Fragmentation, contraction, and accretion in magnetized clouds, Tomisaka,K., 1997, Poster proceedings of IAU Symposium No. 182 on Herbig-Haro Objects and the Birth of Low Mass Stars. 20-24 January 1997,Chamonix, France, Edited by F. Malbet and A. Castets, p. 250.
• Accretion in Gravitationally Contracting Clouds, Tomisaka,K., 1996 Oct., PASJ, 48, No.5.[tar archived postscript files compressed by gzip](208376 Byte)
• Collapse and Fragmentation of Cylindrical Magnetized Clouds.II. Simulation with Nested Grid Scheme Tomisaka,K., 1996 Oct., PASJ, 48, No.5. [postscript compressed by gzip](1245593 Byte)
• Collapse and Fragmentation of Cylindrical Magnetized Clouds, Tomisaka,K., 1995 Jan.1, ApJ, 438, 226 [postscript compressed by gzip](90168 Byte)
• High-resolution X-ray imaging of the Starburst Galaxy M82, Bregman, J.N., Schulman, E., Tomisaka, K.: 1995 Jan, Astrophysical Journal, vol. 439, p.155-162