Cosmic CARNage I: on the calibration of galaxy formation models

Alexander Knebe, Frazer R Pearce, Violeta Gonzalez-Perez, Peter A Thomas, Andrew Benson, Rachel Asquith, Jeremy Blaizot, Richard Bower, Jorge Carretero, Francisco J Castander, Andrea Cattaneo, Sofía A Cora, Darren J Croton, Weiguang Cui, Daniel Cunnama, Julien E Devriendt, Pascal J Elahi, Andreea Font, Fabio Fontanot, Ignacio D Gargiulo & 14 others John Helly, Bruno Henriques, Jaehyun Lee, Gary A Mamon, Julian Onions, Nelson D Padilla, Chris Power, Arnau Pujol, Andrés N Ruiz, Chaichalit Srisawat, Adam R H Stevens, Edouard Tollet, Cristian A Vega-Martínez, Sukyoung K Yi

Research output: Contribution to journalArticle

Abstract

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.
LanguageEnglish
Pages2936-2954
Number of pages19
JournalMonthly Notices of the Royal Astronomical Society
Volume475
Issue number3
DOIs
StatePublished - 11 Apr 2018

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galactic evolution
calibration
halos
stellar mass
dark matter
encapsulating
cold gas
particle mass
star formation rate
mass ratios
occupation
merger
boxes
physics
galaxies
trends
gas

Cite this

Knebe, A., Pearce, F. R., Gonzalez-Perez, V., Thomas, P. A., Benson, A., Asquith, R., ... Yi, S. K. (2018). Cosmic CARNage I: on the calibration of galaxy formation models. Monthly Notices of the Royal Astronomical Society, 475(3), 2936-2954. DOI: 10.1093/mnras/stx3274
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. In: Monthly Notices of the Royal Astronomical Society. 2018 ; Vol. 475, No. 3. pp. 2936-2954
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Knebe, A, Pearce, FR, Gonzalez-Perez, V, Thomas, PA, Benson, A, Asquith, R, Blaizot, J, Bower, R, Carretero, J, Castander, FJ, Cattaneo, A, Cora, SA, Croton, DJ, Cui, W, Cunnama, D, Devriendt, JE, Elahi, PJ, Font, A, Fontanot, F, Gargiulo, ID, Helly, J, Henriques, B, Lee, J, Mamon, GA, Onions, J, Padilla, ND, Power, C, Pujol, A, Ruiz, AN, Srisawat, C, Stevens, ARH, Tollet, E, Vega-Martínez, CA & Yi, SK 2018, 'Cosmic CARNage I: on the calibration of galaxy formation models' Monthly Notices of the Royal Astronomical Society, vol. 475, no. 3, pp. 2936-2954. DOI: 10.1093/mnras/stx3274

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.

In: Monthly Notices of the Royal Astronomical Society, Vol. 475, No. 3, 11.04.2018, p. 2936-2954.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Cosmic CARNage I: on the calibration of galaxy formation models

AU - Knebe,Alexander

AU - Pearce,Frazer R

AU - Gonzalez-Perez,Violeta

AU - Thomas,Peter A

AU - Benson,Andrew

AU - Asquith,Rachel

AU - Blaizot,Jeremy

AU - Bower,Richard

AU - Carretero,Jorge

AU - Castander,Francisco J

AU - Cattaneo,Andrea

AU - Cora,Sofía A

AU - Croton,Darren J

AU - Cui,Weiguang

AU - Cunnama,Daniel

AU - Devriendt,Julien E

AU - Elahi,Pascal J

AU - Font,Andreea

AU - Fontanot,Fabio

AU - Gargiulo,Ignacio D

AU - Helly,John

AU - Henriques,Bruno

AU - Lee,Jaehyun

AU - Mamon,Gary A

AU - Onions,Julian

AU - Padilla,Nelson D

AU - Power,Chris

AU - Pujol,Arnau

AU - Ruiz,Andrés N

AU - Srisawat,Chaichalit

AU - Stevens,Adam R H

AU - Tollet,Edouard

AU - Vega-Martínez,Cristian A

AU - Yi,Sukyoung K

PY - 2018/4/11

Y1 - 2018/4/11

N2 - 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.

AB - 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.

U2 - 10.1093/mnras/stx3274

DO - 10.1093/mnras/stx3274

M3 - Article

VL - 475

SP - 2936

EP - 2954

JO - Monthly Notices of the Royal Astronomical Society

T2 - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

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ER -

Knebe A, Pearce FR, Gonzalez-Perez V, Thomas PA, Benson A, Asquith R et al. Cosmic CARNage I: on the calibration of galaxy formation models. Monthly Notices of the Royal Astronomical Society. 2018 Apr 11;475(3):2936-2954. Available from, DOI: 10.1093/mnras/stx3274