Star formation in turbulent cloud cores with magnetic diffusion
| Project/Area Number |
23540270
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Astronomy
|
|---|
| Research Institution | Hosei University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2011 – 2013
|
| Project Status |
Completed (Fiscal Year 2013)
|
| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
|
|---|
| Keywords | 星形成 / 星間ガス / 数値シミュレーション / 適合格子細分化法 / 分子雲 / 乱流 / 大規模シミュレーション / 連星 / 磁場 |
|---|
| Research Abstract |
A molecular cloud core undergoes gravitational collapse to form a protostar and protoplanetary disk. Observations suggest that molecular cloud cores have magnetic field and turbulence. The magnetic field has a dissipative mechanism especially in the high-density gas.
In this study, we investigated collapse of magnetized and turbulent molecular cloud cores, taking account of magnetic dissipation. We fallowed the evolution of the cloud cores from onset of collapse to formation of a protostar and protoplanetary disk, by using high-resolution adaptive mesh refinement (AMR) simulations. All the cloud cores produce protoplanetary disks irrespective of assumed strengths of magnetic field and turbulence. There is a tendency that a strong magnetic field model shows slower growth of a protoplanetary disk. The strong magnetic field models exhibit cavities in the infalling envelopes, which are caused by the interchange instability of the magnetic field.
|
Report
(4 results)
Research Products
(21 results)
-
-
[Journal Article] Molecular Clumps and Infrared Clusters in the S247, S252, and BFS52 Regions2013
Author(s)
Shimoikura, T., Dobashi, K., Saito, H., Matsumoto, T., Nakamura, F., Nishimura, A., Kimura, K., Onishi, T., and Ogawa, H.
-
Journal Title
The Astrophysical Journal
Volume: 768
Issue: 1
Pages: 72-72
DOI
Related Report
Peer Reviewed
-
-
[Journal Article] MOLECULAR CLUMPS AND INFRARED CLUSTERS IN THE S247, S252, AND BFS52 REGIONS2013
Author(s)
Tomomi Shimoikura, Kazuhito Dobashi, Hiro Saito, Tomoaki Matsumoto, Fumitaka Nakamura, Atsushi Nishimura, Kimihiro Kimura, Toshikazu Onishi, and Hideo Ogawa
-
Journal Title
The Astrophysical Journal
Volume: 768
Related Report
Peer Reviewed
-
[Journal Article] Chemistry in the First Hydrostatic Core Stage by Adopting Three-Dimensional Radiation Hydrodynamic Simulations2012
Author(s)
Furuya, K., Aikawa, Y., Tomida, K, Saigo, K., Tomisaka, K., Hersant, F., & Wakelam, V.
-
Journal Title
The Astrophysical Journal
Volume: 758
Issue: 2
Pages: 86-105
DOI
Related Report
Peer Reviewed
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
