nIFTy cosmology: The clustering consistency of galaxy formation models
- Autores
- Pujol, Arnau; Skibba, Ramin A.; Gaztañaga, Enrique; Benson, Andrew; Blaizot, Jeremy; Bower, Richard; Carretero, Jorge; Castander, Francisco J.; Cattaneo, Andrea; Cora, Sofia Alejandra; Croton, Darren J.; Cui, Weiguang; Cunnama, Daniel; De Lucia, Gabriella; Devriendt, Julien E.; Elahi, Pascal J.; Font, Andreea; Fontanot, Fabio; Garcia Bellido, Juan; Gargiulo, Ignacio Daniel; Gonzalez Perez, Violeta; Helly, John; Henriques, Bruno M. B.; Hirschmann, Michaela; Knebe, Alexander; Lee, Jaehyun; Mamon, Gary A.; Monaco, Pierluigi; Onions, Julian; Padilla, Nelson David; Pearce, Frazer R.; Power, Chris; Somerville, Rachel S.; Srisawat, Chaichalit; Thomas, Peter A.; Tollet, Edouard; Vega Martínez, Cristian Antonio; Yi, Sukyoung K.
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present a clustering comparison of 12 galaxy formation models [including semi-analytic models (SAMs) and halo occupation distribution (HOD) models] all run on halo catalogues and merger trees extracted from a single Λ cold dark matter N-body simulation. We compare the results of the measurements of the mean halo occupation numbers, the radial distribution of galaxies in haloes and the two-point correlation functions (2PCF). We also study the implications of the different treatments of orphan (galaxies not assigned to any dark matter subhalo) and non-orphan galaxies in these measurements. Our main result is that the galaxy formation models generally agree in their clustering predictions but they disagree significantly between HOD and SAMs for the orphan satellites. Although there is a very good agreement between the models on the 2PCF of central galaxies, the scatter between the models when orphan satellites are included can be larger than a factor of 2 for scales smaller than 1 h-1 Mpc. We also show that galaxy formation models that do not include orphan satellite galaxies have a significantly lower 2PCF on small scales, consistent with previous studies. Finally, we show that the 2PCF of orphan satellites is remarkably different between SAMs and HOD models. Orphan satellites in SAMs present a higher clustering than in HOD models because they tend to occupy more massive haloes. We conclude that orphan satellites have an important role on galaxy clustering and they are the main cause of the differences in the clustering between HOD models and SAMs.
Fil: Pujol, Arnau. Institut de Ciències De'l Espai; España
Fil: Skibba, Ramin A.. Center For Astrophysics And Space Sciences; Estados Unidos
Fil: Gaztañaga, Enrique. Institut de Ciències De'l Espai; España
Fil: Benson, Andrew. Carnegie Observatories; Estados Unidos
Fil: Blaizot, Jeremy. Université de Lyon; Francia
Fil: Bower, Richard. Institute For Computational Cosmology; Reino Unido
Fil: Carretero, Jorge. The Barcelona Institute Of Science And Technology; España
Fil: Castander, Francisco J.. Institut de Ciències De'l Espai; España
Fil: Cattaneo, Andrea. Centre National de la Recherche Scientifique; Francia
Fil: Cora, Sofia Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Croton, Darren J.. Swinburne University Of Technology; Australia
Fil: Cui, Weiguang. Universidad Autónoma de Madrid; España
Fil: Cunnama, Daniel. South African Astronomical Observatory; Sudáfrica
Fil: De Lucia, Gabriella. Osservatorio Astronomico Di Trieste; Italia
Fil: Devriendt, Julien E.. University of Oxford; Reino Unido
Fil: Elahi, Pascal J.. Sydney Institute For Astronomy; Australia
Fil: Font, Andreea. Liverpool John Moores University; Reino Unido
Fil: Fontanot, Fabio. Astronomical Observatory Of Trieste; Italia
Fil: Garcia Bellido, Juan. Universidad Autónoma de Madrid; España
Fil: Gargiulo, Ignacio Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Gonzalez Perez, Violeta. Institute For Computational Cosmology; Reino Unido
Fil: Helly, John. Institute For Computational Cosmology; Reino Unido
Fil: Henriques, Bruno M. B.. Max Planck Institut Fur Astrophysics; Alemania
Fil: Hirschmann, Michaela. Institut de Astrophysique de Paris; Francia
Fil: Knebe, Alexander. Instituto de Fisica Teorica; España
Fil: Lee, Jaehyun. Yonsei University; Corea del Sur
Fil: Mamon, Gary A.. Institut de Astrophysique de Paris; Francia
Fil: Monaco, Pierluigi. Astronomical Observatory Of Trieste; Italia
Fil: Onions, Julian. The University Of Nottingham. School Of Physics & Astronomy; Reino Unido
Fil: Padilla, Nelson David. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Pearce, Frazer R.. Science and Technology Facilities Council of Nottingham. Rutherford Appleton Laboratory; Reino Unido. University of Nottingham; Estados Unidos
Fil: Power, Chris. International Centre For Radio Astronomy Reasearch; Australia
Fil: Somerville, Rachel S.. International Centre For Radio Astronomy Research; Australia
Fil: Srisawat, Chaichalit. University of Sussex; Reino Unido
Fil: Thomas, Peter A.. University of Sussex; Reino Unido
Fil: Tollet, Edouard. Observatoire de París; Francia
Fil: Vega Martínez, Cristian Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Yi, Sukyoung K.. Yonsei University; Corea del Sur - Materia
-
COSMOLOGY: THEORY
GALAXIES: HALOES
METHODS: NUMERICAL - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/82490
Ver los metadatos del registro completo
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nIFTy cosmology: The clustering consistency of galaxy formation modelsPujol, ArnauSkibba, Ramin A.Gaztañaga, EnriqueBenson, AndrewBlaizot, JeremyBower, RichardCarretero, JorgeCastander, Francisco J.Cattaneo, AndreaCora, Sofia AlejandraCroton, Darren J.Cui, WeiguangCunnama, DanielDe Lucia, GabriellaDevriendt, Julien E.Elahi, Pascal J.Font, AndreeaFontanot, FabioGarcia Bellido, JuanGargiulo, Ignacio DanielGonzalez Perez, VioletaHelly, JohnHenriques, Bruno M. B.Hirschmann, MichaelaKnebe, AlexanderLee, JaehyunMamon, Gary A.Monaco, PierluigiOnions, JulianPadilla, Nelson DavidPearce, Frazer R.Power, ChrisSomerville, Rachel S.Srisawat, ChaichalitThomas, Peter A.Tollet, EdouardVega Martínez, Cristian AntonioYi, Sukyoung K.COSMOLOGY: THEORYGALAXIES: HALOESMETHODS: NUMERICALhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present a clustering comparison of 12 galaxy formation models [including semi-analytic models (SAMs) and halo occupation distribution (HOD) models] all run on halo catalogues and merger trees extracted from a single Λ cold dark matter N-body simulation. We compare the results of the measurements of the mean halo occupation numbers, the radial distribution of galaxies in haloes and the two-point correlation functions (2PCF). We also study the implications of the different treatments of orphan (galaxies not assigned to any dark matter subhalo) and non-orphan galaxies in these measurements. Our main result is that the galaxy formation models generally agree in their clustering predictions but they disagree significantly between HOD and SAMs for the orphan satellites. Although there is a very good agreement between the models on the 2PCF of central galaxies, the scatter between the models when orphan satellites are included can be larger than a factor of 2 for scales smaller than 1 h-1 Mpc. We also show that galaxy formation models that do not include orphan satellite galaxies have a significantly lower 2PCF on small scales, consistent with previous studies. Finally, we show that the 2PCF of orphan satellites is remarkably different between SAMs and HOD models. Orphan satellites in SAMs present a higher clustering than in HOD models because they tend to occupy more massive haloes. We conclude that orphan satellites have an important role on galaxy clustering and they are the main cause of the differences in the clustering between HOD models and SAMs.Fil: Pujol, Arnau. Institut de Ciències De'l Espai; EspañaFil: Skibba, Ramin A.. Center For Astrophysics And Space Sciences; Estados UnidosFil: Gaztañaga, Enrique. Institut de Ciències De'l Espai; EspañaFil: Benson, Andrew. Carnegie Observatories; Estados UnidosFil: Blaizot, Jeremy. Université de Lyon; FranciaFil: Bower, Richard. Institute For Computational Cosmology; Reino UnidoFil: Carretero, Jorge. The Barcelona Institute Of Science And Technology; EspañaFil: Castander, Francisco J.. Institut de Ciències De'l Espai; EspañaFil: Cattaneo, Andrea. Centre National de la Recherche Scientifique; FranciaFil: Cora, Sofia Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Croton, Darren J.. Swinburne University Of Technology; AustraliaFil: Cui, Weiguang. Universidad Autónoma de Madrid; EspañaFil: Cunnama, Daniel. South African Astronomical Observatory; SudáfricaFil: De Lucia, Gabriella. Osservatorio Astronomico Di Trieste; ItaliaFil: Devriendt, Julien E.. University of Oxford; Reino UnidoFil: Elahi, Pascal J.. Sydney Institute For Astronomy; AustraliaFil: Font, Andreea. Liverpool John Moores University; Reino UnidoFil: Fontanot, Fabio. Astronomical Observatory Of Trieste; ItaliaFil: Garcia Bellido, Juan. Universidad Autónoma de Madrid; EspañaFil: Gargiulo, Ignacio Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Gonzalez Perez, Violeta. Institute For Computational Cosmology; Reino UnidoFil: Helly, John. Institute For Computational Cosmology; Reino UnidoFil: Henriques, Bruno M. B.. Max Planck Institut Fur Astrophysics; AlemaniaFil: Hirschmann, Michaela. Institut de Astrophysique de Paris; FranciaFil: Knebe, Alexander. Instituto de Fisica Teorica; EspañaFil: Lee, Jaehyun. Yonsei University; Corea del SurFil: Mamon, Gary A.. Institut de Astrophysique de Paris; FranciaFil: Monaco, Pierluigi. Astronomical Observatory Of Trieste; ItaliaFil: Onions, Julian. The University Of Nottingham. School Of Physics & Astronomy; Reino UnidoFil: Padilla, Nelson David. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Pearce, Frazer R.. Science and Technology Facilities Council of Nottingham. Rutherford Appleton Laboratory; Reino Unido. University of Nottingham; Estados UnidosFil: Power, Chris. International Centre For Radio Astronomy Reasearch; AustraliaFil: Somerville, Rachel S.. International Centre For Radio Astronomy Research; AustraliaFil: Srisawat, Chaichalit. University of Sussex; Reino UnidoFil: Thomas, Peter A.. University of Sussex; Reino UnidoFil: Tollet, Edouard. Observatoire de París; FranciaFil: Vega Martínez, Cristian Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Yi, Sukyoung K.. Yonsei University; Corea del SurWiley Blackwell Publishing, Inc2017-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/82490Pujol, Arnau; Skibba, Ramin A.; Gaztañaga, Enrique; Benson, Andrew; Blaizot, Jeremy; et al.; nIFTy cosmology: The clustering consistency of galaxy formation models; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 469; 1; 7-2017; 749-7620035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stx913info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stx913info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:14:56Zoai:ri.conicet.gov.ar:11336/82490instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:14:56.375CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
nIFTy cosmology: The clustering consistency of galaxy formation models |
| title |
nIFTy cosmology: The clustering consistency of galaxy formation models |
| spellingShingle |
nIFTy cosmology: The clustering consistency of galaxy formation models Pujol, Arnau COSMOLOGY: THEORY GALAXIES: HALOES METHODS: NUMERICAL |
| title_short |
nIFTy cosmology: The clustering consistency of galaxy formation models |
| title_full |
nIFTy cosmology: The clustering consistency of galaxy formation models |
| title_fullStr |
nIFTy cosmology: The clustering consistency of galaxy formation models |
| title_full_unstemmed |
nIFTy cosmology: The clustering consistency of galaxy formation models |
| title_sort |
nIFTy cosmology: The clustering consistency of galaxy formation models |
| dc.creator.none.fl_str_mv |
Pujol, Arnau Skibba, Ramin A. Gaztañaga, Enrique Benson, Andrew Blaizot, Jeremy Bower, Richard Carretero, Jorge Castander, Francisco J. Cattaneo, Andrea Cora, Sofia Alejandra Croton, Darren J. Cui, Weiguang Cunnama, Daniel De Lucia, Gabriella Devriendt, Julien E. Elahi, Pascal J. Font, Andreea Fontanot, Fabio Garcia Bellido, Juan Gargiulo, Ignacio Daniel Gonzalez Perez, Violeta Helly, John Henriques, Bruno M. B. Hirschmann, Michaela Knebe, Alexander Lee, Jaehyun Mamon, Gary A. Monaco, Pierluigi Onions, Julian Padilla, Nelson David Pearce, Frazer R. Power, Chris Somerville, Rachel S. Srisawat, Chaichalit Thomas, Peter A. Tollet, Edouard Vega Martínez, Cristian Antonio Yi, Sukyoung K. |
| author |
Pujol, Arnau |
| author_facet |
Pujol, Arnau Skibba, Ramin A. Gaztañaga, Enrique Benson, Andrew Blaizot, Jeremy Bower, Richard Carretero, Jorge Castander, Francisco J. Cattaneo, Andrea Cora, Sofia Alejandra Croton, Darren J. Cui, Weiguang Cunnama, Daniel De Lucia, Gabriella Devriendt, Julien E. Elahi, Pascal J. Font, Andreea Fontanot, Fabio Garcia Bellido, Juan Gargiulo, Ignacio Daniel Gonzalez Perez, Violeta Helly, John Henriques, Bruno M. B. Hirschmann, Michaela Knebe, Alexander Lee, Jaehyun Mamon, Gary A. Monaco, Pierluigi Onions, Julian Padilla, Nelson David Pearce, Frazer R. Power, Chris Somerville, Rachel S. Srisawat, Chaichalit Thomas, Peter A. Tollet, Edouard Vega Martínez, Cristian Antonio Yi, Sukyoung K. |
| author_role |
author |
| author2 |
Skibba, Ramin A. Gaztañaga, Enrique Benson, Andrew Blaizot, Jeremy Bower, Richard Carretero, Jorge Castander, Francisco J. Cattaneo, Andrea Cora, Sofia Alejandra Croton, Darren J. Cui, Weiguang Cunnama, Daniel De Lucia, Gabriella Devriendt, Julien E. Elahi, Pascal J. Font, Andreea Fontanot, Fabio Garcia Bellido, Juan Gargiulo, Ignacio Daniel Gonzalez Perez, Violeta Helly, John Henriques, Bruno M. B. Hirschmann, Michaela Knebe, Alexander Lee, Jaehyun Mamon, Gary A. Monaco, Pierluigi Onions, Julian Padilla, Nelson David Pearce, Frazer R. Power, Chris Somerville, Rachel S. Srisawat, Chaichalit Thomas, Peter A. Tollet, Edouard Vega Martínez, Cristian Antonio Yi, Sukyoung K. |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
COSMOLOGY: THEORY GALAXIES: HALOES METHODS: NUMERICAL |
| topic |
COSMOLOGY: THEORY GALAXIES: HALOES METHODS: NUMERICAL |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
We present a clustering comparison of 12 galaxy formation models [including semi-analytic models (SAMs) and halo occupation distribution (HOD) models] all run on halo catalogues and merger trees extracted from a single Λ cold dark matter N-body simulation. We compare the results of the measurements of the mean halo occupation numbers, the radial distribution of galaxies in haloes and the two-point correlation functions (2PCF). We also study the implications of the different treatments of orphan (galaxies not assigned to any dark matter subhalo) and non-orphan galaxies in these measurements. Our main result is that the galaxy formation models generally agree in their clustering predictions but they disagree significantly between HOD and SAMs for the orphan satellites. Although there is a very good agreement between the models on the 2PCF of central galaxies, the scatter between the models when orphan satellites are included can be larger than a factor of 2 for scales smaller than 1 h-1 Mpc. We also show that galaxy formation models that do not include orphan satellite galaxies have a significantly lower 2PCF on small scales, consistent with previous studies. Finally, we show that the 2PCF of orphan satellites is remarkably different between SAMs and HOD models. Orphan satellites in SAMs present a higher clustering than in HOD models because they tend to occupy more massive haloes. We conclude that orphan satellites have an important role on galaxy clustering and they are the main cause of the differences in the clustering between HOD models and SAMs. Fil: Pujol, Arnau. Institut de Ciències De'l Espai; España Fil: Skibba, Ramin A.. Center For Astrophysics And Space Sciences; Estados Unidos Fil: Gaztañaga, Enrique. Institut de Ciències De'l Espai; España Fil: Benson, Andrew. Carnegie Observatories; Estados Unidos Fil: Blaizot, Jeremy. Université de Lyon; Francia Fil: Bower, Richard. Institute For Computational Cosmology; Reino Unido Fil: Carretero, Jorge. The Barcelona Institute Of Science And Technology; España Fil: Castander, Francisco J.. Institut de Ciències De'l Espai; España Fil: Cattaneo, Andrea. Centre National de la Recherche Scientifique; Francia Fil: Cora, Sofia Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina Fil: Croton, Darren J.. Swinburne University Of Technology; Australia Fil: Cui, Weiguang. Universidad Autónoma de Madrid; España Fil: Cunnama, Daniel. South African Astronomical Observatory; Sudáfrica Fil: De Lucia, Gabriella. Osservatorio Astronomico Di Trieste; Italia Fil: Devriendt, Julien E.. University of Oxford; Reino Unido Fil: Elahi, Pascal J.. Sydney Institute For Astronomy; Australia Fil: Font, Andreea. Liverpool John Moores University; Reino Unido Fil: Fontanot, Fabio. Astronomical Observatory Of Trieste; Italia Fil: Garcia Bellido, Juan. Universidad Autónoma de Madrid; España Fil: Gargiulo, Ignacio Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina Fil: Gonzalez Perez, Violeta. Institute For Computational Cosmology; Reino Unido Fil: Helly, John. Institute For Computational Cosmology; Reino Unido Fil: Henriques, Bruno M. B.. Max Planck Institut Fur Astrophysics; Alemania Fil: Hirschmann, Michaela. Institut de Astrophysique de Paris; Francia Fil: Knebe, Alexander. Instituto de Fisica Teorica; España Fil: Lee, Jaehyun. Yonsei University; Corea del Sur Fil: Mamon, Gary A.. Institut de Astrophysique de Paris; Francia Fil: Monaco, Pierluigi. Astronomical Observatory Of Trieste; Italia Fil: Onions, Julian. The University Of Nottingham. School Of Physics & Astronomy; Reino Unido Fil: Padilla, Nelson David. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina Fil: Pearce, Frazer R.. Science and Technology Facilities Council of Nottingham. Rutherford Appleton Laboratory; Reino Unido. University of Nottingham; Estados Unidos Fil: Power, Chris. International Centre For Radio Astronomy Reasearch; Australia Fil: Somerville, Rachel S.. International Centre For Radio Astronomy Research; Australia Fil: Srisawat, Chaichalit. University of Sussex; Reino Unido Fil: Thomas, Peter A.. University of Sussex; Reino Unido Fil: Tollet, Edouard. Observatoire de París; Francia Fil: Vega Martínez, Cristian Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina Fil: Yi, Sukyoung K.. Yonsei University; Corea del Sur |
| description |
We present a clustering comparison of 12 galaxy formation models [including semi-analytic models (SAMs) and halo occupation distribution (HOD) models] all run on halo catalogues and merger trees extracted from a single Λ cold dark matter N-body simulation. We compare the results of the measurements of the mean halo occupation numbers, the radial distribution of galaxies in haloes and the two-point correlation functions (2PCF). We also study the implications of the different treatments of orphan (galaxies not assigned to any dark matter subhalo) and non-orphan galaxies in these measurements. Our main result is that the galaxy formation models generally agree in their clustering predictions but they disagree significantly between HOD and SAMs for the orphan satellites. Although there is a very good agreement between the models on the 2PCF of central galaxies, the scatter between the models when orphan satellites are included can be larger than a factor of 2 for scales smaller than 1 h-1 Mpc. We also show that galaxy formation models that do not include orphan satellite galaxies have a significantly lower 2PCF on small scales, consistent with previous studies. Finally, we show that the 2PCF of orphan satellites is remarkably different between SAMs and HOD models. Orphan satellites in SAMs present a higher clustering than in HOD models because they tend to occupy more massive haloes. We conclude that orphan satellites have an important role on galaxy clustering and they are the main cause of the differences in the clustering between HOD models and SAMs. |
| publishDate |
2017 |
| dc.date.none.fl_str_mv |
2017-07 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/82490 Pujol, Arnau; Skibba, Ramin A.; Gaztañaga, Enrique; Benson, Andrew; Blaizot, Jeremy; et al.; nIFTy cosmology: The clustering consistency of galaxy formation models; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 469; 1; 7-2017; 749-762 0035-8711 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/82490 |
| identifier_str_mv |
Pujol, Arnau; Skibba, Ramin A.; Gaztañaga, Enrique; Benson, Andrew; Blaizot, Jeremy; et al.; nIFTy cosmology: The clustering consistency of galaxy formation models; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 469; 1; 7-2017; 749-762 0035-8711 CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stx913 info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stx913 |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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openAccess |
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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application/pdf application/pdf application/pdf application/pdf |
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Wiley Blackwell Publishing, Inc |
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Wiley Blackwell Publishing, Inc |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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