Theoretical Models of Protostellar Binary and Multiple Systems with AMR Simulations

Tomoaki Matsumoto, Kazuki Tokuda, Toshikazu Onishi, Shu Ichiro Inutsuka, Kazuya Saigo, Shigehisa Takakuwa

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


We present theoretical models for protostellar binary and multiple systems based on the high-resolution numerical simulation with an adaptive mesh refinement (AMR) code, SFUMATO. The recent ALMA observations have revealed early phases of the binary and multiple star formation with high spatial resolutions. These observations should be compared with theoretical models with high spatial resolutions. We present two theoretical models for (1) a high density molecular cloud core, MC27/L1521F, and (2) a protobinary system, L1551 NE. For the model for MC27, we performed numerical simulations for gravitational collapse of a turbulent cloud core. The cloud core exhibits fragmentation during the collapse, and dynamical interaction between the fragments produces an arc-like structure, which is one of the prominent structures observed by ALMA. For the model for L1551 NE, we performed numerical simulations of gas accretion onto protobinary. The simulations exhibit asymmetry of a circumbinary disk. Such asymmetry has been also observed by ALMA in the circumbinary disk of L1551 NE.

Original languageEnglish
Article number012009
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - May 30 2017
Externally publishedYes
Event11th International Conference on Numerical Modeling of Space Plasma Flows, ASTRONUM 2016 - Monterey, United States
Duration: Jun 6 2016Jun 10 2016

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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