Relic galaxy analogues in TNG50 simulation : the formation pathways of surviving red nuggets in a cosmological simulation
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/237294 |
Resumo: | Relic galaxies are massive compact quiescent galaxies that formed at high-redshift and remained almost unchanged since then. In this work, we search for analogues to relic galaxies in the TNG50 cosmological simulations to understand relic formation and test the ability of TNG50 to reproduce such rare objects. Using stellar mass, age, radius, quiescence, and stellar assembly criteria, we find five subhaloes in TNG50 that could be potential relic analogues. We compare their properties with other constraints imposed by a sample of 13 observed relic galaxies. We find one analogue in TNG50 that simultaneously satisfies most of the available observational constraints, such as metallicity and morphology. It also shows similarities to the confirmed relic NGC 1277, regarding environment and dark matter fraction. By taking into account a degree of relicness, a second relic analogue may also be considered. However, the central parts of the brightness and density profiles of the analogues are less steep than that of real relic galaxies, possibly due to limited numerical resolution. We identify two formation pathways of relic analogues in TNG50 depending on their environment: they either have their remaining gas stripped during the infall into a cluster at z 1.2 or consume it before z > 1.5. They are then deprived of significant star formation, leaving their stellar populations almost unaltered during the last 9 Gyr. We also find that the analogue progenitors at z ∼ 4 inhabit more massive haloes than progenitors of quiescent galaxies with similar stellar mass at z ∼ 0. |
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Freitas, Rodrigo Flores deChies-Santos, Ana LeonorFurlanetto, Cristinade Rossi, María EmiliaFerreira, Leonardo de AlbernazZenocratti, LucasAlamo-Martínez, Karla A.2022-04-15T04:42:54Z20220035-8711http://hdl.handle.net/10183/237294001139707Relic galaxies are massive compact quiescent galaxies that formed at high-redshift and remained almost unchanged since then. In this work, we search for analogues to relic galaxies in the TNG50 cosmological simulations to understand relic formation and test the ability of TNG50 to reproduce such rare objects. Using stellar mass, age, radius, quiescence, and stellar assembly criteria, we find five subhaloes in TNG50 that could be potential relic analogues. We compare their properties with other constraints imposed by a sample of 13 observed relic galaxies. We find one analogue in TNG50 that simultaneously satisfies most of the available observational constraints, such as metallicity and morphology. It also shows similarities to the confirmed relic NGC 1277, regarding environment and dark matter fraction. By taking into account a degree of relicness, a second relic analogue may also be considered. However, the central parts of the brightness and density profiles of the analogues are less steep than that of real relic galaxies, possibly due to limited numerical resolution. We identify two formation pathways of relic analogues in TNG50 depending on their environment: they either have their remaining gas stripped during the infall into a cluster at z 1.2 or consume it before z > 1.5. They are then deprived of significant star formation, leaving their stellar populations almost unaltered during the last 9 Gyr. We also find that the analogue progenitors at z ∼ 4 inhabit more massive haloes than progenitors of quiescent galaxies with similar stellar mass at z ∼ 0.application/pdfengMonthly notices of the royal astronomical society. Oxford. Vol. 512, no. 1 (May 2022), p. 245-264Galaxias elipticasEvolucao galaticaFormacao de galaxiasGalaxies: elliptical and lenticularGalaxies: evolutionGalaxies: formationRelic galaxy analogues in TNG50 simulation : the formation pathways of surviving red nuggets in a cosmological simulationEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001139707.pdf.txt001139707.pdf.txtExtracted Texttext/plain112813http://www.lume.ufrgs.br/bitstream/10183/237294/2/001139707.pdf.txt56da1ac4ebdb779413ab63cf904e1a0bMD52ORIGINAL001139707.pdfTexto completo (inglês)application/pdf4096617http://www.lume.ufrgs.br/bitstream/10183/237294/1/001139707.pdf76b7c6cfe1d4ae4723ff9bcaf54d081dMD5110183/2372942023-06-17 03:38:26.218409oai:www.lume.ufrgs.br:10183/237294Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-06-17T06:38:26Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Relic galaxy analogues in TNG50 simulation : the formation pathways of surviving red nuggets in a cosmological simulation |
title |
Relic galaxy analogues in TNG50 simulation : the formation pathways of surviving red nuggets in a cosmological simulation |
spellingShingle |
Relic galaxy analogues in TNG50 simulation : the formation pathways of surviving red nuggets in a cosmological simulation Freitas, Rodrigo Flores de Galaxias elipticas Evolucao galatica Formacao de galaxias Galaxies: elliptical and lenticular Galaxies: evolution Galaxies: formation |
title_short |
Relic galaxy analogues in TNG50 simulation : the formation pathways of surviving red nuggets in a cosmological simulation |
title_full |
Relic galaxy analogues in TNG50 simulation : the formation pathways of surviving red nuggets in a cosmological simulation |
title_fullStr |
Relic galaxy analogues in TNG50 simulation : the formation pathways of surviving red nuggets in a cosmological simulation |
title_full_unstemmed |
Relic galaxy analogues in TNG50 simulation : the formation pathways of surviving red nuggets in a cosmological simulation |
title_sort |
Relic galaxy analogues in TNG50 simulation : the formation pathways of surviving red nuggets in a cosmological simulation |
author |
Freitas, Rodrigo Flores de |
author_facet |
Freitas, Rodrigo Flores de Chies-Santos, Ana Leonor Furlanetto, Cristina de Rossi, María Emilia Ferreira, Leonardo de Albernaz Zenocratti, Lucas Alamo-Martínez, Karla A. |
author_role |
author |
author2 |
Chies-Santos, Ana Leonor Furlanetto, Cristina de Rossi, María Emilia Ferreira, Leonardo de Albernaz Zenocratti, Lucas Alamo-Martínez, Karla A. |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Freitas, Rodrigo Flores de Chies-Santos, Ana Leonor Furlanetto, Cristina de Rossi, María Emilia Ferreira, Leonardo de Albernaz Zenocratti, Lucas Alamo-Martínez, Karla A. |
dc.subject.por.fl_str_mv |
Galaxias elipticas Evolucao galatica Formacao de galaxias |
topic |
Galaxias elipticas Evolucao galatica Formacao de galaxias Galaxies: elliptical and lenticular Galaxies: evolution Galaxies: formation |
dc.subject.eng.fl_str_mv |
Galaxies: elliptical and lenticular Galaxies: evolution Galaxies: formation |
description |
Relic galaxies are massive compact quiescent galaxies that formed at high-redshift and remained almost unchanged since then. In this work, we search for analogues to relic galaxies in the TNG50 cosmological simulations to understand relic formation and test the ability of TNG50 to reproduce such rare objects. Using stellar mass, age, radius, quiescence, and stellar assembly criteria, we find five subhaloes in TNG50 that could be potential relic analogues. We compare their properties with other constraints imposed by a sample of 13 observed relic galaxies. We find one analogue in TNG50 that simultaneously satisfies most of the available observational constraints, such as metallicity and morphology. It also shows similarities to the confirmed relic NGC 1277, regarding environment and dark matter fraction. By taking into account a degree of relicness, a second relic analogue may also be considered. However, the central parts of the brightness and density profiles of the analogues are less steep than that of real relic galaxies, possibly due to limited numerical resolution. We identify two formation pathways of relic analogues in TNG50 depending on their environment: they either have their remaining gas stripped during the infall into a cluster at z 1.2 or consume it before z > 1.5. They are then deprived of significant star formation, leaving their stellar populations almost unaltered during the last 9 Gyr. We also find that the analogue progenitors at z ∼ 4 inhabit more massive haloes than progenitors of quiescent galaxies with similar stellar mass at z ∼ 0. |
publishDate |
2022 |
dc.date.accessioned.fl_str_mv |
2022-04-15T04:42:54Z |
dc.date.issued.fl_str_mv |
2022 |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
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http://hdl.handle.net/10183/237294 |
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0035-8711 |
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001139707 |
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0035-8711 001139707 |
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http://hdl.handle.net/10183/237294 |
dc.language.iso.fl_str_mv |
eng |
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dc.relation.ispartof.pt_BR.fl_str_mv |
Monthly notices of the royal astronomical society. Oxford. Vol. 512, no. 1 (May 2022), p. 245-264 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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