A model for star formation in cosmological simulations of galaxy formation
We present a new model to describe the star formation process in galaxies, which includes the description of the different gas phases - molecular, atomic, and ionized - together with its metal content. The model, which will be coupled to cosmological simulations of galaxy formation, will be used to...
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| Formato: | Articulo |
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2021
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/168928 |
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I19-R120-10915-1689282024-08-22T20:02:15Z http://sedici.unlp.edu.ar/handle/10915/168928 A model for star formation in cosmological simulations of galaxy formation Lozano, F. Scannapieco, C. Nuza, S. E. 2021 2024-08-22T16:20:51Z en Ciencias Astronómicas galaxies: star formation galaxies: evolution methods: numerical We present a new model to describe the star formation process in galaxies, which includes the description of the different gas phases - molecular, atomic, and ionized - together with its metal content. The model, which will be coupled to cosmological simulations of galaxy formation, will be used to investigate the relation between the star formation rate (SFR) and the formation of molecular hydrogen. The model follows the time evolution of the molecular, atomic and ionized phases in a gas cloud and estimates the amount of stellar mass formed, by solving a set of five coupled differential equations. As expected, we find a positive, strong correlation between the molecular fraction and the initial gas density, which manifests in a positive correlation between the initial gas density and the SFR of the cloud. En este trabajo presentamos un nuevo modelo para describir el proceso de formación estelar en galaxias, el cual incluye la descripción de las diferentes fases del gas - molecular, atómica e ionizada - en conjunto con su contenido metálico. Este modelo, que será acoplado a simulaciones cosmológicas de la formación de galaxias, será utilizado para investigar la relación entre la tasa de formación estelar (SFR, por sus siglas en inglés) y la formación de hidrógeno molecular. El modelo sigue la evolución temporal de las tres fases en una nube de gas y estima la cantidad de masa estelar formada, a través de la resolución de un sistema de cinco ecuaciones diferenciales acopladas. Según lo esperado, encontramos una correlación fuerte y positiva entre la fracción molecular y la densidad de gas inicial, la cual se manifiesta en una correlación positiva entre la densidad de gas inicial y la SFR de la nube. Asociación Argentina de Astronomía Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 146-148 |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas galaxies: star formation galaxies: evolution methods: numerical |
| spellingShingle |
Ciencias Astronómicas galaxies: star formation galaxies: evolution methods: numerical Lozano, F. Scannapieco, C. Nuza, S. E. A model for star formation in cosmological simulations of galaxy formation |
| topic_facet |
Ciencias Astronómicas galaxies: star formation galaxies: evolution methods: numerical |
| description |
We present a new model to describe the star formation process in galaxies, which includes the description of the different gas phases - molecular, atomic, and ionized - together with its metal content. The model, which will be coupled to cosmological simulations of galaxy formation, will be used to investigate the relation between the star formation rate (SFR) and the formation of molecular hydrogen. The model follows the time evolution of the molecular, atomic and ionized phases in a gas cloud and estimates the amount of stellar mass formed, by solving a set of five coupled differential equations. As expected, we find a positive, strong correlation between the molecular fraction and the initial gas density, which manifests in a positive correlation between the initial gas density and the SFR of the cloud. |
| format |
Articulo Articulo |
| author |
Lozano, F. Scannapieco, C. Nuza, S. E. |
| author_facet |
Lozano, F. Scannapieco, C. Nuza, S. E. |
| author_sort |
Lozano, F. |
| title |
A model for star formation in cosmological simulations of galaxy formation |
| title_short |
A model for star formation in cosmological simulations of galaxy formation |
| title_full |
A model for star formation in cosmological simulations of galaxy formation |
| title_fullStr |
A model for star formation in cosmological simulations of galaxy formation |
| title_full_unstemmed |
A model for star formation in cosmological simulations of galaxy formation |
| title_sort |
model for star formation in cosmological simulations of galaxy formation |
| publishDate |
2021 |
| url |
http://sedici.unlp.edu.ar/handle/10915/168928 |
| work_keys_str_mv |
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