Age and metallicity gradients in simulated galaxies of the Local Group

We present preliminary results regarding the presence of radial and vertical gradients in age and metallicity of simulated Local Group-like galaxies, using the new generation of high-resolution hydrodynamical zoom-in simulations HESTIA (High-resolution Environmental Simulations of The Immediate Area...

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Detalles Bibliográficos
Autores principales: Marioni, O. F., Abadi, Mario Gabriel
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Ciencias Astronómicas
galaxies: structure
galaxies: star formation
galaxies: formation
galaxies: abundances
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/168926
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-168926
record_format dspace
spelling I19-R120-10915-1689262024-08-22T20:02:16Z http://sedici.unlp.edu.ar/handle/10915/168926 Age and metallicity gradients in simulated galaxies of the Local Group Marioni, O. F. Abadi, Mario Gabriel 2021 2024-08-22T16:03:45Z en Ciencias Astronómicas galaxies: structure galaxies: star formation galaxies: formation galaxies: abundances We present preliminary results regarding the presence of radial and vertical gradients in age and metallicity of simulated Local Group-like galaxies, using the new generation of high-resolution hydrodynamical zoom-in simulations HESTIA (High-resolution Environmental Simulations of The Immediate Area). These set of simulations use observational data, as constraint in their initial conditions, to simulate the local environment. We analyzed the most massive halos of one of these simulations. We studied the metallicity and age distributions of these galaxies and found the presence of vertical and radial gradients. These gradients show that the older and less metallic population have a higher vertical scale, than the younger and more metallic population of stars. The vertical scale increase to the outskirts of the galaxy and this trend is seen for all stellar ages. This kind of gradients is seen also in the Milky Way, analyzing their origin can help us to understand the formation history of our galaxy. Presentamos resultados preliminares sobre la presencia de gradientes radiales y verticales en edad y metalicidad de galaxias simuladas similares al Grupo Local, utilizando la nueva generación de simulaciones hidrodinámicas de alta resolución HESTIA. Este conjunto de simulaciones utiliza datos observacionales, como restricción en sus condiciones iniciales, para simular el entorno local. Analizamos los halos más masivos de una de estas simulaciones. Estudiamos las distribuciones de edad y metalicidad de estas galaxias y encontramos presencia de gradientes verticales y radiales. Estos gradientes muestran que la población estelar más vieja y menos metálica tiene una escala vertical más alta que la población de estrellas más joven y más metálica. La escala vertical aumenta hacia las afueras de la galaxia y esta tendencia se observa en todos los bines de edad estelar. Este tipo de gradientes son observados también en la Vía Láctea, analizar su origen puede ayudarnos a comprender la historia de formación de nuestra galaxia. 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 140-142
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
galaxies: structure
galaxies: star formation
galaxies: formation
galaxies: abundances
spellingShingle Ciencias Astronómicas
galaxies: structure
galaxies: star formation
galaxies: formation
galaxies: abundances
Marioni, O. F.
Abadi, Mario Gabriel
Age and metallicity gradients in simulated galaxies of the Local Group
topic_facet Ciencias Astronómicas
galaxies: structure
galaxies: star formation
galaxies: formation
galaxies: abundances
description We present preliminary results regarding the presence of radial and vertical gradients in age and metallicity of simulated Local Group-like galaxies, using the new generation of high-resolution hydrodynamical zoom-in simulations HESTIA (High-resolution Environmental Simulations of The Immediate Area). These set of simulations use observational data, as constraint in their initial conditions, to simulate the local environment. We analyzed the most massive halos of one of these simulations. We studied the metallicity and age distributions of these galaxies and found the presence of vertical and radial gradients. These gradients show that the older and less metallic population have a higher vertical scale, than the younger and more metallic population of stars. The vertical scale increase to the outskirts of the galaxy and this trend is seen for all stellar ages. This kind of gradients is seen also in the Milky Way, analyzing their origin can help us to understand the formation history of our galaxy.
format Articulo
Articulo
author Marioni, O. F.
Abadi, Mario Gabriel
author_facet Marioni, O. F.
Abadi, Mario Gabriel
author_sort Marioni, O. F.
title Age and metallicity gradients in simulated galaxies of the Local Group
title_short Age and metallicity gradients in simulated galaxies of the Local Group
title_full Age and metallicity gradients in simulated galaxies of the Local Group
title_fullStr Age and metallicity gradients in simulated galaxies of the Local Group
title_full_unstemmed Age and metallicity gradients in simulated galaxies of the Local Group
title_sort age and metallicity gradients in simulated galaxies of the local group
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/168926
work_keys_str_mv AT marioniof ageandmetallicitygradientsinsimulatedgalaxiesofthelocalgroup
AT abadimariogabriel ageandmetallicitygradientsinsimulatedgalaxiesofthelocalgroup
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