Are Ly α emitters segregated in protoclusters regions?

The presence of neutral hydrogen in the inter-stellar medium (ISM) and inter-galactic medium (IGM) induces radiative transfer (RT) effects on Ly α photons which affect the observability of Lyman alpha emitters (LAEs). We use the GALFORM semi-analytic model of galaxy formation and evolution to analys...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Hough, Tomás, Gurung López, Siddhartha, Orsi, Álvaro, Cora, Sofía Alejandra, Lacey, Cedric G., Baugh, Carlton M.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Astronomía
Física
Radiative transfer
methods: numerical
Galaxies: clusters: general
Galaxies: high-redshift
Galaxies: clusters: intracluster medium
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/125599
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-125599
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Astronomía
Física
Radiative transfer
methods: numerical
Galaxies: clusters: general
Galaxies: high-redshift
Galaxies: clusters: intracluster medium
spellingShingle Astronomía
Física
Radiative transfer
methods: numerical
Galaxies: clusters: general
Galaxies: high-redshift
Galaxies: clusters: intracluster medium
Hough, Tomás
Gurung López, Siddhartha
Orsi, Álvaro
Cora, Sofía Alejandra
Lacey, Cedric G.
Baugh, Carlton M.
Are Ly α emitters segregated in protoclusters regions?
topic_facet Astronomía
Física
Radiative transfer
methods: numerical
Galaxies: clusters: general
Galaxies: high-redshift
Galaxies: clusters: intracluster medium
description The presence of neutral hydrogen in the inter-stellar medium (ISM) and inter-galactic medium (IGM) induces radiative transfer (RT) effects on Ly α photons which affect the observability of Lyman alpha emitters (LAEs). We use the GALFORM semi-analytic model of galaxy formation and evolution to analyse how these effects shape the spatial distribution of LAEs with respect to H α emitters (HAEs) around high density regions at high redshift. We find that when a large sample of protoclusters is considered, HAEs showing also Ly α emission (HAEs+LAEs) populate the same regions as those that do not display the Ly α line at z = 2.2. We compare against the protocluster USS1558-003, one of the most massive protoclusters located at z = 2.53. Our results indicate that the strong depletion of HAEs + LAEs present in the high density regions of USS1558-003 may be due to cosmic variance. We find that at z = 2.2 and z = 3.0, RT of the ISM produces a strong decline (30-50 per cent) of the clustering amplitude of HAEs + LAEs with respect to HAEs towards the protoclusters centre. At z = 5.7, given the early evolutionary state of protoclusters and galaxies, the clustering of HAEs + LAEs has a smaller variation (10-20 per cent) towards the protoclusters centre. Depending on the equivalent width and luminosity criteria of the emission-line galaxy sample, the IGM can have a mild or a null effect on galaxy properties and clustering in high density regions.
format Articulo
Articulo
author Hough, Tomás
Gurung López, Siddhartha
Orsi, Álvaro
Cora, Sofía Alejandra
Lacey, Cedric G.
Baugh, Carlton M.
author_facet Hough, Tomás
Gurung López, Siddhartha
Orsi, Álvaro
Cora, Sofía Alejandra
Lacey, Cedric G.
Baugh, Carlton M.
author_sort Hough, Tomás
title Are Ly α emitters segregated in protoclusters regions?
title_short Are Ly α emitters segregated in protoclusters regions?
title_full Are Ly α emitters segregated in protoclusters regions?
title_fullStr Are Ly α emitters segregated in protoclusters regions?
title_full_unstemmed Are Ly α emitters segregated in protoclusters regions?
title_sort are ly α emitters segregated in protoclusters regions?
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/125599
work_keys_str_mv AT houghtomas arelyaemitterssegregatedinprotoclustersregions
AT gurunglopezsiddhartha arelyaemitterssegregatedinprotoclustersregions
AT orsialvaro arelyaemitterssegregatedinprotoclustersregions
AT corasofiaalejandra arelyaemitterssegregatedinprotoclustersregions
AT laceycedricg arelyaemitterssegregatedinprotoclustersregions
AT baughcarltonm arelyaemitterssegregatedinprotoclustersregions
bdutipo_str Repositorios
_version_ 1764820451928834049

Ejemplares similares