Chemical abundances and spatial distribution of long gamma-ray bursts

We analyse the spatial distribution within host galaxies and chemical properties of the progenitors of long gamma-ray bursts (LGRBs) as a function of redshift. By using hydrodynamical cosmological simulations, which include star formation, supernova feedback and chemical enrichment, and based on the...

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Autores principales:	Artale, M.C., Pellizza, L.J., Tissera, P.B.
Formato:	JOUR
Materias:	Galaxies: abundances Galaxies: evolution Gamma-ray burst: general
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00358711_v415_n4_p3417_Artale
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00358711_v415_n4_p3417_Artale
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spelling	todo:paper_00358711_v415_n4_p3417_Artale2023-10-03T14:47:00Z Chemical abundances and spatial distribution of long gamma-ray bursts Artale, M.C. Pellizza, L.J. Tissera, P.B. Galaxies: abundances Galaxies: evolution Gamma-ray burst: general We analyse the spatial distribution within host galaxies and chemical properties of the progenitors of long gamma-ray bursts (LGRBs) as a function of redshift. By using hydrodynamical cosmological simulations, which include star formation, supernova feedback and chemical enrichment, and based on the hypothesis of the collapsar model with low metallicity, we investigate the progenitors in the range 0 < z < 3. Our results suggest that the sites of these phenomena tend to be located in the central regions of the hosts at high redshifts but move outwards for lower ones. We find that scenarios with low metallicity cut-offs best fit current observations. For these scenarios, LGRBs tend to be [Fe/H]-poor and show a strong α-enhancement evolution towards lower values as redshift decreases. The variation of typical burst sites with redshift would imply that they might be tracing different parts of galaxies at different redshifts. © 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00358711_v415_n4_p3417_Artale
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Galaxies: abundances Galaxies: evolution Gamma-ray burst: general
spellingShingle	Galaxies: abundances Galaxies: evolution Gamma-ray burst: general Artale, M.C. Pellizza, L.J. Tissera, P.B. Chemical abundances and spatial distribution of long gamma-ray bursts
topic_facet	Galaxies: abundances Galaxies: evolution Gamma-ray burst: general
description	We analyse the spatial distribution within host galaxies and chemical properties of the progenitors of long gamma-ray bursts (LGRBs) as a function of redshift. By using hydrodynamical cosmological simulations, which include star formation, supernova feedback and chemical enrichment, and based on the hypothesis of the collapsar model with low metallicity, we investigate the progenitors in the range 0 < z < 3. Our results suggest that the sites of these phenomena tend to be located in the central regions of the hosts at high redshifts but move outwards for lower ones. We find that scenarios with low metallicity cut-offs best fit current observations. For these scenarios, LGRBs tend to be [Fe/H]-poor and show a strong α-enhancement evolution towards lower values as redshift decreases. The variation of typical burst sites with redshift would imply that they might be tracing different parts of galaxies at different redshifts. © 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS.
format	JOUR
author	Artale, M.C. Pellizza, L.J. Tissera, P.B.
author_facet	Artale, M.C. Pellizza, L.J. Tissera, P.B.
author_sort	Artale, M.C.
title	Chemical abundances and spatial distribution of long gamma-ray bursts
title_short	Chemical abundances and spatial distribution of long gamma-ray bursts
title_full	Chemical abundances and spatial distribution of long gamma-ray bursts
title_fullStr	Chemical abundances and spatial distribution of long gamma-ray bursts
title_full_unstemmed	Chemical abundances and spatial distribution of long gamma-ray bursts
title_sort	chemical abundances and spatial distribution of long gamma-ray bursts
url	http://hdl.handle.net/20.500.12110/paper_00358711_v415_n4_p3417_Artale
work_keys_str_mv	AT artalemc chemicalabundancesandspatialdistributionoflonggammaraybursts AT pellizzalj chemicalabundancesandspatialdistributionoflonggammaraybursts AT tisserapb chemicalabundancesandspatialdistributionoflonggammaraybursts
_version_	1782025634725232640

Chemical abundances and spatial distribution of long gamma-ray bursts

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