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Public Release of A-SLOTH: Ancient Stars and Local Observables by Tracing Halos by Hartwig, Tilman; Magg, Mattis; Chen, Li-Hsin; Tarumi, Yuta; Bromm, Volker; Glover, Simon C. O.; Ji, Alexander P.; Klessen, Ralf S.; Latif, Muhammad A.; Volonteri, Marta; Yoshida, Naoki is a scholarly article available to read on EtoBox.

What is Public Release of A-SLOTH: Ancient Stars and Local Observables by Tracing Halos about?

The semi-analytical model A-SLOTH (Ancient Stars and Local Observables by Tracing Halos) is the first public code that connects the formation of the first stars and galaxies to observables. After several successful projects with this model, we publish the source code and describe the public version in this paper. The model is based on dark matter merger trees that can either be generated based on Extended Press-Schechter theory or that can be imported from dark matter simulations. On top of these merger trees, A-SLOTH applies analytical recipes for baryonic physics to model the formation of both metal-free and metal-poor stars and the transition between them with unprecedented precision and fidelity. A-SLOTH samples individual stars and includes radiative, chemical, and mechanical feedback. It is calibrated based on six observables, such as the optical depth to Thomson scattering, the stellar mass of the Milky Way and its satellite galaxies, the number of extremely-metal poor stars, and the cosmic star formation rate density at high redshift. A-SLOTH has versatile applications with moderate computational requirements. It can be used to constrain the properties of the first stars an

Author

Hartwig, Tilman; Magg, Mattis; Chen, Li-Hsin; Tarumi, Yuta; Bromm, Volker; Glover, Simon C. O.; Ji, Alexander P.; Klessen, Ralf S.; Latif, Muhammad A.; Volonteri, Marta; Yoshida, Naoki

Published

2022

Language

EN