Cosmic CARNage I: on the calibration of galaxy formation models
We present a comparison of nine galaxy formation models, eight semi-analytical, and one halo occupation distribution model, run on the same underlying cold dark matter simulation (cosmological box of comoving width 125h−1 Mpc, with a dark-matter particle mass of 1.24 × 109h−1M ) and the same merger...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Oxford University Press
2018
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| Online Access: | https://eprints.nottingham.ac.uk/49764/ |
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| author | Knebe, Alexander Pearce, Frazer R. Gonzalez-Perez, Violeta Thomas, Peter A. Benson, Andrew Asquith, Rachel Blaizot, Jeremy Bower, Richard Carretero, Jorge Castander, Francisco J. Cattaneo, Andrea Cora, Sofía A. Croton, Darren J. Cui, Weiguang Cunnama, Daniel Devriendt, Julien E. Elahi, Pascal J. Font, Andreea Fontanot, Fabio Gargiulo, Ignacio D. Helly, John Henriques, Bruno Lee, Jaehyun Mamon, Gary A. Onions, Julian Padilla, Nelson D. Power, Chris Pujol, Arnau Ruiz, Andrés N. Srisawat, Chaichalit Stevens, Adam R H Tollet, Edouard Vega-Martínez, Cristian A. Yi, Sukyoung K. |
| author_facet | Knebe, Alexander Pearce, Frazer R. Gonzalez-Perez, Violeta Thomas, Peter A. Benson, Andrew Asquith, Rachel Blaizot, Jeremy Bower, Richard Carretero, Jorge Castander, Francisco J. Cattaneo, Andrea Cora, Sofía A. Croton, Darren J. Cui, Weiguang Cunnama, Daniel Devriendt, Julien E. Elahi, Pascal J. Font, Andreea Fontanot, Fabio Gargiulo, Ignacio D. Helly, John Henriques, Bruno Lee, Jaehyun Mamon, Gary A. Onions, Julian Padilla, Nelson D. Power, Chris Pujol, Arnau Ruiz, Andrés N. Srisawat, Chaichalit Stevens, Adam R H Tollet, Edouard Vega-Martínez, Cristian A. Yi, Sukyoung K. |
| author_sort | Knebe, Alexander |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | We present a comparison of nine galaxy formation models, eight semi-analytical, and one halo occupation distribution model, run on the same underlying cold dark matter simulation (cosmological box of comoving width 125h−1 Mpc, with a dark-matter particle mass of 1.24 × 109h−1M ) and the same merger trees. While their free parameters have been calibrated to the same observational data sets using two approaches, they nevertheless retain some ‘memory’ of any previous calibration that served as the starting point (especially for the manually tuned models). For the first calibration, models reproduce the observed z = 0 galaxy stellar mass function (SMF) within 3σ. The second calibration extended the observational data to include the z = 2 SMF alongside the z ∼ 0 star formation rate function, cold gas mass, and the black hole–bulge mass relation. Encapsulating the observed evolution of the SMF from z = 2 to 0 is found to be very hard within the context of the physics currently included in the models. We finally use our calibrated models to study the evolution of the stellar-to-halo mass (SHM) ratio. For all models, we find that the peak value of the SHM relation decreases with redshift. However, the trends seen for the evolution of the peak position as well as the mean scatter in the SHM relation are rather weak and strongly model dependent. Both the calibration data sets and model results are publicly available. |
| first_indexed | 2025-11-14T20:13:58Z |
| format | Article |
| id | nottingham-49764 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T20:13:58Z |
| publishDate | 2018 |
| publisher | Oxford University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-497642018-02-14T08:00:55Z https://eprints.nottingham.ac.uk/49764/ Cosmic CARNage I: on the calibration of galaxy formation models Knebe, Alexander Pearce, Frazer R. Gonzalez-Perez, Violeta Thomas, Peter A. Benson, Andrew Asquith, Rachel Blaizot, Jeremy Bower, Richard Carretero, Jorge Castander, Francisco J. Cattaneo, Andrea Cora, Sofía A. Croton, Darren J. Cui, Weiguang Cunnama, Daniel Devriendt, Julien E. Elahi, Pascal J. Font, Andreea Fontanot, Fabio Gargiulo, Ignacio D. Helly, John Henriques, Bruno Lee, Jaehyun Mamon, Gary A. Onions, Julian Padilla, Nelson D. Power, Chris Pujol, Arnau Ruiz, Andrés N. Srisawat, Chaichalit Stevens, Adam R H Tollet, Edouard Vega-Martínez, Cristian A. Yi, Sukyoung K. We present a comparison of nine galaxy formation models, eight semi-analytical, and one halo occupation distribution model, run on the same underlying cold dark matter simulation (cosmological box of comoving width 125h−1 Mpc, with a dark-matter particle mass of 1.24 × 109h−1M ) and the same merger trees. While their free parameters have been calibrated to the same observational data sets using two approaches, they nevertheless retain some ‘memory’ of any previous calibration that served as the starting point (especially for the manually tuned models). For the first calibration, models reproduce the observed z = 0 galaxy stellar mass function (SMF) within 3σ. The second calibration extended the observational data to include the z = 2 SMF alongside the z ∼ 0 star formation rate function, cold gas mass, and the black hole–bulge mass relation. Encapsulating the observed evolution of the SMF from z = 2 to 0 is found to be very hard within the context of the physics currently included in the models. We finally use our calibrated models to study the evolution of the stellar-to-halo mass (SHM) ratio. For all models, we find that the peak value of the SHM relation decreases with redshift. However, the trends seen for the evolution of the peak position as well as the mean scatter in the SHM relation are rather weak and strongly model dependent. Both the calibration data sets and model results are publicly available. Oxford University Press 2018-04-11 Article PeerReviewed application/pdf en https://eprints.nottingham.ac.uk/49764/1/stx3274.pdf Knebe, Alexander, Pearce, Frazer R., Gonzalez-Perez, Violeta, Thomas, Peter A., Benson, Andrew, Asquith, Rachel, Blaizot, Jeremy, Bower, Richard, Carretero, Jorge, Castander, Francisco J., Cattaneo, Andrea, Cora, Sofía A., Croton, Darren J., Cui, Weiguang, Cunnama, Daniel, Devriendt, Julien E., Elahi, Pascal J., Font, Andreea, Fontanot, Fabio, Gargiulo, Ignacio D., Helly, John, Henriques, Bruno, Lee, Jaehyun, Mamon, Gary A., Onions, Julian, Padilla, Nelson D., Power, Chris, Pujol, Arnau, Ruiz, Andrés N., Srisawat, Chaichalit, Stevens, Adam R H, Tollet, Edouard, Vega-Martínez, Cristian A. and Yi, Sukyoung K. (2018) Cosmic CARNage I: on the calibration of galaxy formation models. Monthly Notices of the Royal Astronomical Society, 475 (3). pp. 2936-2954. ISSN 1365-2966 methods: analytical ; methods: numerical ; galaxies: evolution ; galaxies: haloes ; dark matter ; cosmology: theory. https://academic.oup.com/mnras/article/475/3/2936/4768290 doi:10.1093/mnras/stx3274 doi:10.1093/mnras/stx3274 |
| spellingShingle | methods: analytical ; methods: numerical ; galaxies: evolution ; galaxies: haloes ; dark matter ; cosmology: theory. Knebe, Alexander Pearce, Frazer R. Gonzalez-Perez, Violeta Thomas, Peter A. Benson, Andrew Asquith, Rachel Blaizot, Jeremy Bower, Richard Carretero, Jorge Castander, Francisco J. Cattaneo, Andrea Cora, Sofía A. Croton, Darren J. Cui, Weiguang Cunnama, Daniel Devriendt, Julien E. Elahi, Pascal J. Font, Andreea Fontanot, Fabio Gargiulo, Ignacio D. Helly, John Henriques, Bruno Lee, Jaehyun Mamon, Gary A. Onions, Julian Padilla, Nelson D. Power, Chris Pujol, Arnau Ruiz, Andrés N. Srisawat, Chaichalit Stevens, Adam R H Tollet, Edouard Vega-Martínez, Cristian A. Yi, Sukyoung K. Cosmic CARNage I: on the calibration of galaxy formation models |
| title | Cosmic CARNage I: on the calibration of galaxy formation models |
| title_full | Cosmic CARNage I: on the calibration of galaxy formation models |
| title_fullStr | Cosmic CARNage I: on the calibration of galaxy formation models |
| title_full_unstemmed | Cosmic CARNage I: on the calibration of galaxy formation models |
| title_short | Cosmic CARNage I: on the calibration of galaxy formation models |
| title_sort | cosmic carnage i: on the calibration of galaxy formation models |
| topic | methods: analytical ; methods: numerical ; galaxies: evolution ; galaxies: haloes ; dark matter ; cosmology: theory. |
| url | https://eprints.nottingham.ac.uk/49764/ https://eprints.nottingham.ac.uk/49764/ https://eprints.nottingham.ac.uk/49764/ |