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Shock-induced star cluster formation in colliding galaxies

Published online by Cambridge University Press:  27 April 2011

Takayuki R. Saitoh
Affiliation:
Division of Theoretical Astronomy, National Astronomical Observatory of Japan, 2–21–1 Osawa, Mitaka-shi, Tokyo 181–8588
Hiroshi Daisaka
Affiliation:
Graduate School of Commerce and Management, Hitotsubashi University, Naka 2–1 Kunitachi-shi, Tokyo 186–8601
Eiichiro Kokubo
Affiliation:
Division of Theoretical Astronomy, National Astronomical Observatory of Japan, 2–21–1 Osawa, Mitaka-shi, Tokyo 181–8588 Center for Computational Astrophysics, National Astronomical Observatory of Japan, 2–21–1 Osawa, Mitaka-shi, Tokyo 181–8588 School of Physical Sciences, Graduate University of Advanced Study (SOKENDAI), 2–21–1 Osawa, Mitaka-shi, Tokyo 181–8588
Junichiro Makino
Affiliation:
Division of Theoretical Astronomy, National Astronomical Observatory of Japan, 2–21–1 Osawa, Mitaka-shi, Tokyo 181–8588 Center for Computational Astrophysics, National Astronomical Observatory of Japan, 2–21–1 Osawa, Mitaka-shi, Tokyo 181–8588 School of Physical Sciences, Graduate University of Advanced Study (SOKENDAI), 2–21–1 Osawa, Mitaka-shi, Tokyo 181–8588
Takashi Okamoto
Affiliation:
Center for Computational Sciences, University of Tsukuba 1–1–1, Tennodai, Tsukuba, Ibaraki 305–8577, Japan
Kohji Tomisaka
Affiliation:
Division of Theoretical Astronomy, National Astronomical Observatory of Japan, 2–21–1 Osawa, Mitaka-shi, Tokyo 181–8588 Center for Computational Astrophysics, National Astronomical Observatory of Japan, 2–21–1 Osawa, Mitaka-shi, Tokyo 181–8588 School of Physical Sciences, Graduate University of Advanced Study (SOKENDAI), 2–21–1 Osawa, Mitaka-shi, Tokyo 181–8588
Keiichi Wada
Affiliation:
Center for Computational Astrophysics, National Astronomical Observatory of Japan, 2–21–1 Osawa, Mitaka-shi, Tokyo 181–8588 Graduate School of Science and Engineering, Kagoshima University, 1–21–30 Korimoto, Kagoshima, Kagoshima 890–8580
Naoki Yoshida
Affiliation:
Institute for the Physics and Mathematics of the Universe, University of Tokyo, 5–1–5 Kashiwanoha, Kashiwa, Chiba 277–8568, Japan email: saitoh.takayuki@nao.ac.jp
Corresponding
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Abstract

We studied the formation process of star clusters using high-resolution N-body/smoothed particle hydrodynamics simulations of colliding galaxies. The total number of particles is 1.2×108 for our high resolution run. The gravitational softening is 5 pc and we allow gas to cool down to ~10 K. During the first encounter of the collision, a giant filament consists of cold and dense gas found between the progenitors by shock compression. A vigorous starburst took place in the filament, resulting in the formation of star clusters. The mass of these star clusters ranges from 105−8M. These star clusters formed hierarchically: at first small star clusters formed, and then they merged via gravity, resulting in larger star clusters.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2011

References

Bekki, K. & Couch, W. J. 2001, ApJL, 557, L19CrossRefGoogle Scholar
Bois, M., et al. 2010, MNRAS, 406, 2405CrossRefGoogle Scholar
Bournaud, F., Duc, P.-A., & Emsellem, E. 2008, MNRAS, 389, L8CrossRefGoogle Scholar
Elmegreen, B. G. 2009, in Globular Clusters, Guide to Galaxies, ed. Richtler, T., et al. , ESO: Springer, p. 87CrossRefGoogle Scholar
Li, Y., Mac Low, M.-M., & Klessen, R. S. 2004, ApJL, 614, L29CrossRefGoogle Scholar
Saitoh, T. R., Daisaka, H., Kokubo, E., Makino, J., Okamoto, T., Tomisaka, K., Wada, K., & Yoshida, N. 2008, PASJ, 60, 667CrossRefGoogle Scholar
Saitoh, T. R., Daisaka, H., Kokubo, E., Makino, J., Okamoto, T., Tomisaka, K., Wada, K., & Yoshida, N. 2009, PASJ, 61, 481CrossRefGoogle Scholar
Saitoh, T. R. & Makino, J. 2009, ApJ (Letters), 697, L99CrossRefGoogle Scholar
Saitoh, T. R. & Makino, J. 2010, PASJ, 62, 301CrossRefGoogle Scholar
Schweizer, F. 1987, in Nearly Normal Galaxies. From the Planck Time to the Present, ed. Faber, S. M., 18–25Google Scholar
Whitmore, B. C. 2003, in A Decade of Hubble Space Telescope Science, ed. Livio, M., Noll, K., & Stiavelli, M., 153–178Google Scholar
Whitmore, B. C., Zhang, Q., Leitherer, C., Fall, S. M., Schweizer, F., & Miller, B. W. 1999, AJ, 118, 1551CrossRefGoogle Scholar

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