Cosmic CARNage II: the evolution of the galaxy stellar mass function in observations and galaxy formation models
We present a comparison of the observed evolving galaxy stellar mass functions with the predictions of eight semi-analytic models and one halo occupation distribution model. While most models are able to fit the data at low redshift, some of them struggle to simultaneously fit observations at high r...
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| Format: | Article |
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Oxford University Press
2018
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| Online Access: | https://eprints.nottingham.ac.uk/52981/ |
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| author | Asquith, Rachel Pearce, Frazer R. Almaini, Omar Knebe, Alexander Gonzalez-Perez, Violeta Benson, Andrew Blaizot, Jeremy Carretero, Jorge Castander, Francisco J. Cattaneo, Andrea Cora, Sofía A. Croton, Darren J. Devriendt, Julien E. Fontanot, Fabio Gargiulo, Ignacio D. Hartley, Will Henriques, Bruno Lee, Jaehyun Mamon, Gary A. Onions, Julian Padilla, Nelson D. Power, Chris Srisawat, Chaichalit Stevens, Adam R.H. Thomas, Peter A. Vega-Martínez, Cristian A. Yi, Sukyoung K. |
| author_facet | Asquith, Rachel Pearce, Frazer R. Almaini, Omar Knebe, Alexander Gonzalez-Perez, Violeta Benson, Andrew Blaizot, Jeremy Carretero, Jorge Castander, Francisco J. Cattaneo, Andrea Cora, Sofía A. Croton, Darren J. Devriendt, Julien E. Fontanot, Fabio Gargiulo, Ignacio D. Hartley, Will Henriques, Bruno Lee, Jaehyun Mamon, Gary A. Onions, Julian Padilla, Nelson D. Power, Chris Srisawat, Chaichalit Stevens, Adam R.H. Thomas, Peter A. Vega-Martínez, Cristian A. Yi, Sukyoung K. |
| author_sort | Asquith, Rachel |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | We present a comparison of the observed evolving galaxy stellar mass functions with the predictions of eight semi-analytic models and one halo occupation distribution model. While most models are able to fit the data at low redshift, some of them struggle to simultaneously fit observations at high redshift. We separate the galaxies into ‘passive’ and ‘star-forming’ classes and find that several of the models produce too many low-mass star-forming galaxies at high redshift compared to observations, in some cases by nearly a factor of 10 in the redshift range 2.5 < z < 3.0. We also find important differences in the implied mass of the dark matter haloes the galaxies inhabit, by comparing with halo masses inferred from observations. Galaxies at high redshift in the models are in lower mass haloes than suggested by observations, and the star formation efficiency in low-mass haloes is higher than observed. We conclude that many of the models require a physical prescription that acts to dissociate the growth of low-mass galaxies from the growth of their dark matter haloes at high redshift. |
| first_indexed | 2025-11-14T20:26:22Z |
| format | Article |
| id | nottingham-52981 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:26:22Z |
| publishDate | 2018 |
| publisher | Oxford University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-529812020-05-04T19:46:25Z https://eprints.nottingham.ac.uk/52981/ Cosmic CARNage II: the evolution of the galaxy stellar mass function in observations and galaxy formation models Asquith, Rachel Pearce, Frazer R. Almaini, Omar Knebe, Alexander Gonzalez-Perez, Violeta Benson, Andrew Blaizot, Jeremy Carretero, Jorge Castander, Francisco J. Cattaneo, Andrea Cora, Sofía A. Croton, Darren J. Devriendt, Julien E. Fontanot, Fabio Gargiulo, Ignacio D. Hartley, Will Henriques, Bruno Lee, Jaehyun Mamon, Gary A. Onions, Julian Padilla, Nelson D. Power, Chris Srisawat, Chaichalit Stevens, Adam R.H. Thomas, Peter A. Vega-Martínez, Cristian A. Yi, Sukyoung K. We present a comparison of the observed evolving galaxy stellar mass functions with the predictions of eight semi-analytic models and one halo occupation distribution model. While most models are able to fit the data at low redshift, some of them struggle to simultaneously fit observations at high redshift. We separate the galaxies into ‘passive’ and ‘star-forming’ classes and find that several of the models produce too many low-mass star-forming galaxies at high redshift compared to observations, in some cases by nearly a factor of 10 in the redshift range 2.5 < z < 3.0. We also find important differences in the implied mass of the dark matter haloes the galaxies inhabit, by comparing with halo masses inferred from observations. Galaxies at high redshift in the models are in lower mass haloes than suggested by observations, and the star formation efficiency in low-mass haloes is higher than observed. We conclude that many of the models require a physical prescription that acts to dissociate the growth of low-mass galaxies from the growth of their dark matter haloes at high redshift. Oxford University Press 2018-07-14 Article PeerReviewed Asquith, Rachel, Pearce, Frazer R., Almaini, Omar, Knebe, Alexander, Gonzalez-Perez, Violeta, Benson, Andrew, Blaizot, Jeremy, Carretero, Jorge, Castander, Francisco J., Cattaneo, Andrea, Cora, Sofía A., Croton, Darren J., Devriendt, Julien E., Fontanot, Fabio, Gargiulo, Ignacio D., Hartley, Will, Henriques, Bruno, Lee, Jaehyun, Mamon, Gary A., Onions, Julian, Padilla, Nelson D., Power, Chris, Srisawat, Chaichalit, Stevens, Adam R.H., Thomas, Peter A., Vega-Martínez, Cristian A. and Yi, Sukyoung K. (2018) Cosmic CARNage II: the evolution of the galaxy stellar mass function in observations and galaxy formation models. Monthly Notices of the Royal Astronomical Society . ISSN 0035-8711 methods:numerical galaxies:haloes galaxies: evolution cosmology:theory dark matter https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/sty1870/5054051?guestAccessKey=9425562c-1d10-4dfe-8fcf-af5d837125f8 doi:10.1093/mnras/sty1870 doi:10.1093/mnras/sty1870 |
| spellingShingle | methods:numerical galaxies:haloes galaxies: evolution cosmology:theory dark matter Asquith, Rachel Pearce, Frazer R. Almaini, Omar Knebe, Alexander Gonzalez-Perez, Violeta Benson, Andrew Blaizot, Jeremy Carretero, Jorge Castander, Francisco J. Cattaneo, Andrea Cora, Sofía A. Croton, Darren J. Devriendt, Julien E. Fontanot, Fabio Gargiulo, Ignacio D. Hartley, Will Henriques, Bruno Lee, Jaehyun Mamon, Gary A. Onions, Julian Padilla, Nelson D. Power, Chris Srisawat, Chaichalit Stevens, Adam R.H. Thomas, Peter A. Vega-Martínez, Cristian A. Yi, Sukyoung K. Cosmic CARNage II: the evolution of the galaxy stellar mass function in observations and galaxy formation models |
| title | Cosmic CARNage II: the evolution of the galaxy stellar mass function in observations and galaxy formation models |
| title_full | Cosmic CARNage II: the evolution of the galaxy stellar mass function in observations and galaxy formation models |
| title_fullStr | Cosmic CARNage II: the evolution of the galaxy stellar mass function in observations and galaxy formation models |
| title_full_unstemmed | Cosmic CARNage II: the evolution of the galaxy stellar mass function in observations and galaxy formation models |
| title_short | Cosmic CARNage II: the evolution of the galaxy stellar mass function in observations and galaxy formation models |
| title_sort | cosmic carnage ii: the evolution of the galaxy stellar mass function in observations and galaxy formation models |
| topic | methods:numerical galaxies:haloes galaxies: evolution cosmology:theory dark matter |
| url | https://eprints.nottingham.ac.uk/52981/ https://eprints.nottingham.ac.uk/52981/ https://eprints.nottingham.ac.uk/52981/ |