An Open Source Code to Simulate the First Galaxies
| Project/Area Number |
19K23437
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Multi-year Fund |
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| Review Section |
0203:Particle-, nuclear-, astro-physics, and related fields
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Hartwig Tilman 東京大学, 大学院理学系研究科(理学部), 助教 (00843434)
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| Project Period (FY) |
2019-08-30 – 2022-03-31
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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | Public Software / Star Formation / Frst Stars / Milky Way / Semi-analytical Model / First Stars / Semi-analytical model / Star formation / First stars / Astronomy |
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| Outline of Research at the Start |
We develop the first open-source model of galaxy formation in the early Universe. This state-of-the-art public tool will enable the community to determine the properties of the first galaxies, solve open questions about the formation of our Universe, and allows to optimize upcoming observations.
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| Outline of Final Research Achievements |
With a team of 11 international scientists, we have developed the semi-analytical model A-SLOTH (Ancient Stars and Local Observables by Tracing Halos). It is the first public code that connects the formation of the first stars and galaxies to observables. We now publish the source code to make it accessible to the public.
On top of dark matter merger trees, A-SLOTH applies analytical recipes for baryonic physics to model the formation of the first generations of stars with unprecedented precision and fidelity. It samples individual stars and includes radiative, chemical, and mechanical feedback. It is calibrated based on six observables. A-SLOTH has versatile applications with moderate computational requirements and can now be used by the scientific community.
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| Academic Significance and Societal Importance of the Research Achievements |
A-SLOTH is the first public semi-analytical model that connects the formation of the first stars and galaxies to observables. The code release paper has 11 co-authors from 5 countries, which demonstrates the international support and interest in this project.
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Report
(4 results)
Research Products
(25 results)
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[Journal Article] Optical Spectroscopy of Dual Quasar Candidates from the Subaru HSC-SSP program2021
Author(s)
Tang S.、Silverman J.D.、Ding X.、Li J.、Lee K.-G.、Strauss M.A.、Goulding A.、Schramm M.、Kawinwanichakij L.、Xavier P.J.、Hennawi J.F.、Imanishi M.、Iwasawa K.、Toba Y.、Kayo I.、Oguri M.、Matsuoka Y.、Onoue M.、Jahnke K.、Ichikawa K.、Hartwig T.、Kashikawa N.、Kawaguchi Toshihiro、et al.
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Journal Title
The Astrophysical Journal
Volume: 922
Issue: 1
Pages: 83-83
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Dual Supermassive Black Holes at Close Separation Revealed by the Hyper Suprime-Cam Subaru Strategic Program2020
Author(s)
Silverman J.D., Tang S., Lee K.-G., T. Hartwig, A. Goulding, M.A. Strauss, M. Schramm, X. Ding, R. Riffel, S. Fujimoto, C. Hikage, M. Imanishi, K. Iwasawa, K. Jahnke, I. Kayo, N. Kashikawa, T. Kawaguchi, 他16名
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Journal Title
The Astrophysical Journal
Volume: 899
Issue: 2
Pages: 154-154
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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