Hostname: page-component-cd9895bd7-7cvxr Total loading time: 0 Render date: 2024-12-24T02:25:18.553Z Has data issue: false hasContentIssue false
  • English
  • Français

Formation process of the Orion Nebula Cluster

Published online by Cambridge University Press:  20 January 2023

Michiko S. Fujii Open the ORCID record for Michiko S. Fujii [Opens in a new window] ,
Long Wang Open the ORCID record for Long Wang [Opens in a new window] ,
Takayuki R. Saitoh ,
Yutaka Hirai  and
Yoshito Shimajiri
Michiko S. Fujii
Affiliation:
The University of Tokyo
Long Wang
Affiliation:
Sun Yat-sen University
Takayuki R. Saitoh
Affiliation:
Kobe University
Yutaka Hirai
Affiliation:
University of Notre Dame Tohoku University
Yoshito Shimajiri
Affiliation:
National Astronomical Observatory of Japan
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The Orion Nebula Cluster (ONC) is one of the nearest open clusters, which we can directly compare to numerical simulations. We performed a simulation of star cluster formation similar to the ONC using our new N-body/smoothed particle hydrodynamics code, ASURA+BRIDGE. We found that the hierarchical formation of star clusters via clump mergers can explain the observed three peaks in the stellar age distribution as well as the dynamically anisotropic structures of the ONC.

Keywords

methods: n-body simulationsmethods: numericalopen clusters and associations: individual (Orion Nebula Cluster)
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 16 , Symposium S362: The Predictive Power of Computational Astrophysics as a Discovery Tool , June 2020 , pp. 258 - 261
Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

References

Beccari, G., Petr-Gotzens, M. G., Boffin, H. M. J., Romaniello, M., Fedele, D., Carraro, G., De Marchi, G., de Wit, W. J., Drew, J. E., Kalari, V. M., Manara, C. F., Martin, E. L., Mieske, S., Panagia, N., Testi, L., Vink, J. S., Walsh, J. R., & Wright, N. J. 2017, A tale of three cities. OmegaCAM discovers multiple sequences in the color-magnitude diagram of the Orion Nebula Cluster. A&A, 604, A22.Google Scholar
Fujii, M. S., Saitoh, T. R., Hirai, Y., & Wang, L. 2021,a SIRIUS project. III. Star-by-star simulations of star cluster formation using a direct N-body integrator with stellar feedback. Publ. Astron. Soc. Japan, 73a(4), 1074–1099.CrossRefGoogle Scholar
Fujii, M. S., Saitoh, T. R., Wang, L., & Hirai, Y. 2021,b SIRIUS project. II. A new tree-direct hybrid code for smoothed particle hydrodynamics/N-body simulations of star clusters. Publ. Astron. Soc. Japan, 73b(4), 1057–1073.Google Scholar
Hillenbrand, L. A. & Hartmann, L. W. 1998, A Preliminary Study of the Orion Nebula Cluster Structure and Dynamics. ApJ, 492(2), 540–553.Google Scholar
Hirai, Y., Fujii, M. S., & Saitoh, T. R. 2021, SIRIUS project. I. Star formation models for starby-star simulations of star clusters and galaxy formation. Publ. Astron. Soc. Japan, 73(4), 1036–1056.CrossRefGoogle Scholar
Iwasawa, M., Portegies Zwart, S., & Makino, J. 2015, GPU-enabled particle-particle particletree scheme for simulating dense stellar cluster system. Computational Astrophysics and Cosmology, 2, 6.CrossRefGoogle Scholar
Kim, D., Lu, J. R., Konopacky, Q., Chu, L., Toller, E., Anderson, J., Theissen, C. A., & Morris, M. R. 2019, Stellar Proper Motions in the Orion Nebula Cluster. AJ, 157(3), 109.CrossRefGoogle Scholar
Kounkel, M., Hartmann, L., Loinard, L., Ortiz-León, G. N., Mioduszewski, A. J., Rodríguez, L. F., Dzib, S. A., Torres, R. M., Pech, G., Galli, P. A. B., Rivera, J. L., Boden, A. F., Evans, Neal J., I., Briceño, C., & Tobin, J. J. 2017, The Gould’s Belt Distances Survey (GOBELINS) II. Distances and Structure toward the Orion Molecular Clouds. ApJ, 834(2), 142.CrossRefGoogle Scholar
Kroupa, P., Jeřábková, T., Dinnbier, F., Beccari, G., & Yan, Z. 2018, Evidence for feedback and stellar-dynamically regulated bursty star cluster formation: the case of the Orion Nebula Cluster. A&A, 612, A74.Google Scholar
Oshino, S., Funato, Y., & Makino, J. 2011, Particle-Particle Particle-Tree: A Direct-Tree Hybrid Scheme for Collisional N-Body Simulations. Publ. Astron. Soc. Japan, 63, 881.CrossRefGoogle Scholar
Theissen, C. A., Konopacky, Q. M., Lu, J. R., Kim, D., Zhang, S. Y., Hsu, C.-C., Chu, L., & Wei, L. 2021, The 3-D Kinematics of the Orion Nebula Cluster: NIRSPEC-AO Radial Velocities of the Core Population. arXiv e-prints, arXiv:2105.05871.Google Scholar
Wang, L., Iwasawa, M., Nitadori, K., & Makino, J. 2020,a PETAR: a high-performance N-body code for modelling massive collisional stellar systems. MNRAS, 497a(1), 536–555.CrossRefGoogle Scholar
Wang, L., Kroupa, P., & Jerabkova, T. 2019, Complete ejection of OB stars from very young star clusters and the formation of multiple populations. MNRAS, 484(2), 1843–1851.Google Scholar
Wang, L., Nitadori, K., & Makino, J. 2020,b A slow-down time-transformed symplectic integrator for solving the few-body problem. MNRAS, 493b(3), 3398–3411.Google Scholar