nIFTy cosmology: Comparison of galaxy formation models

A. Knebe, F.R. Pearce, P.A. Thomas, A. Benson, J. Blaizot, R. Bower, J. Carretero, F.J. Castander, A. Cattaneo, S.A. Cora, D.J. Croton, Weiguang Cui, D. Cunnama, G. De Lucia, J.E. Devriendt, Pascal Elahi, A. Font, F. Fontanot, J. Garcia-Bellido, I.D. Gargiulo & 16 others V. Gonzalez-Perez, J. Helly, B. Henriques, M. Hirschmann, J. Lee, G.A. Mamon, P. Monaco, J. Onions, N.D. Padilla, Chris Power, A. Pujol, R.A. Skibba, R.S. Somerville, C. Srisawat, C.A. Vega-Martínez, S.K. Yi

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Abstract

© 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. We present a comparison of 14 galaxy formation models: 12 different semi-analytical models and 2 halo occupation distribution models for galaxy formation based upon the same cosmological simulation and merger tree information derived from it. The participating codes have proven to be very successful in their own right but they have all been calibrated independently using various observational data sets, stellar models, and merger trees. In this paper, we apply them without recalibration and this leads to a wide variety of predictions for the stellar mass function, specific star formation rates, stellar-to-halo mass ratios, and the abundance of orphan galaxies. The scatter is much larger than seen in previous comparison studies primarily because the codes have been used outside of their native environment within which they are well tested and calibrated. The purpose of the 'nIFTy comparison of galaxy formation models' is to bring together as many different galaxy formation modellers as possible and to investigate a common approach to model calibration. This paper provides a unified description for all participating models and presents the initial, uncalibrated comparison as a baseline for our future studies where we will develop a common calibration framework and address the extent to which that reduces the scatter in the model predictions seen here.
Original languageEnglish
Pages (from-to)4029-4059
JournalMonthly Notices of the Royal Astronomical Society
Volume451
Issue number4
DOIs
Publication statusPublished - 21 Aug 2015

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galactic evolution
cosmology
halos
merger
stellar models
calibration
orphan
star formation rate
predictions
comparison
stellar mass
mass ratios
occupation
prediction
galaxies
simulation

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Knebe, A., Pearce, F. R., Thomas, P. A., Benson, A., Blaizot, J., Bower, R., ... Yi, S. K. (2015). nIFTy cosmology: Comparison of galaxy formation models. Monthly Notices of the Royal Astronomical Society, 451(4), 4029-4059. https://doi.org/10.1093/mnras/stv1149
Knebe, A. ; Pearce, F.R. ; Thomas, P.A. ; Benson, A. ; Blaizot, J. ; Bower, R. ; Carretero, J. ; Castander, F.J. ; Cattaneo, A. ; Cora, S.A. ; Croton, D.J. ; Cui, Weiguang ; Cunnama, D. ; De Lucia, G. ; Devriendt, J.E. ; Elahi, Pascal ; Font, A. ; Fontanot, F. ; Garcia-Bellido, J. ; Gargiulo, I.D. ; Gonzalez-Perez, V. ; Helly, J. ; Henriques, B. ; Hirschmann, M. ; Lee, J. ; Mamon, G.A. ; Monaco, P. ; Onions, J. ; Padilla, N.D. ; Power, Chris ; Pujol, A. ; Skibba, R.A. ; Somerville, R.S. ; Srisawat, C. ; Vega-Martínez, C.A. ; Yi, S.K. / nIFTy cosmology: Comparison of galaxy formation models. In: Monthly Notices of the Royal Astronomical Society. 2015 ; Vol. 451, No. 4. pp. 4029-4059.
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Knebe, A, Pearce, FR, Thomas, PA, Benson, A, Blaizot, J, Bower, R, Carretero, J, Castander, FJ, Cattaneo, A, Cora, SA, Croton, DJ, Cui, W, Cunnama, D, De Lucia, G, Devriendt, JE, Elahi, P, Font, A, Fontanot, F, Garcia-Bellido, J, Gargiulo, ID, Gonzalez-Perez, V, Helly, J, Henriques, B, Hirschmann, M, Lee, J, Mamon, GA, Monaco, P, Onions, J, Padilla, ND, Power, C, Pujol, A, Skibba, RA, Somerville, RS, Srisawat, C, Vega-Martínez, CA & Yi, SK 2015, 'nIFTy cosmology: Comparison of galaxy formation models' Monthly Notices of the Royal Astronomical Society, vol. 451, no. 4, pp. 4029-4059. https://doi.org/10.1093/mnras/stv1149

nIFTy cosmology: Comparison of galaxy formation models. / Knebe, A.; Pearce, F.R.; Thomas, P.A.; Benson, A.; Blaizot, J.; Bower, R.; Carretero, J.; Castander, F.J.; Cattaneo, A.; Cora, S.A.; Croton, D.J.; Cui, Weiguang; Cunnama, D.; De Lucia, G.; Devriendt, J.E.; Elahi, Pascal; Font, A.; Fontanot, F.; Garcia-Bellido, J.; Gargiulo, I.D.; Gonzalez-Perez, V.; Helly, J.; Henriques, B.; Hirschmann, M.; Lee, J.; Mamon, G.A.; Monaco, P.; Onions, J.; Padilla, N.D.; Power, Chris; Pujol, A.; Skibba, R.A.; Somerville, R.S.; Srisawat, C.; Vega-Martínez, C.A.; Yi, S.K.

In: Monthly Notices of the Royal Astronomical Society, Vol. 451, No. 4, 21.08.2015, p. 4029-4059.

Research output: Contribution to journalArticle

TY - JOUR

T1 - nIFTy cosmology: Comparison of galaxy formation models

AU - Knebe, A.

AU - Pearce, F.R.

AU - Thomas, P.A.

AU - Benson, A.

AU - Blaizot, J.

AU - Bower, R.

AU - Carretero, J.

AU - Castander, F.J.

AU - Cattaneo, A.

AU - Cora, S.A.

AU - Croton, D.J.

AU - Cui, Weiguang

AU - Cunnama, D.

AU - De Lucia, G.

AU - Devriendt, J.E.

AU - Elahi, Pascal

AU - Font, A.

AU - Fontanot, F.

AU - Garcia-Bellido, J.

AU - Gargiulo, I.D.

AU - Gonzalez-Perez, V.

AU - Helly, J.

AU - Henriques, B.

AU - Hirschmann, M.

AU - Lee, J.

AU - Mamon, G.A.

AU - Monaco, P.

AU - Onions, J.

AU - Padilla, N.D.

AU - Power, Chris

AU - Pujol, A.

AU - Skibba, R.A.

AU - Somerville, R.S.

AU - Srisawat, C.

AU - Vega-Martínez, C.A.

AU - Yi, S.K.

PY - 2015/8/21

Y1 - 2015/8/21

N2 - © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. We present a comparison of 14 galaxy formation models: 12 different semi-analytical models and 2 halo occupation distribution models for galaxy formation based upon the same cosmological simulation and merger tree information derived from it. The participating codes have proven to be very successful in their own right but they have all been calibrated independently using various observational data sets, stellar models, and merger trees. In this paper, we apply them without recalibration and this leads to a wide variety of predictions for the stellar mass function, specific star formation rates, stellar-to-halo mass ratios, and the abundance of orphan galaxies. The scatter is much larger than seen in previous comparison studies primarily because the codes have been used outside of their native environment within which they are well tested and calibrated. The purpose of the 'nIFTy comparison of galaxy formation models' is to bring together as many different galaxy formation modellers as possible and to investigate a common approach to model calibration. This paper provides a unified description for all participating models and presents the initial, uncalibrated comparison as a baseline for our future studies where we will develop a common calibration framework and address the extent to which that reduces the scatter in the model predictions seen here.

AB - © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. We present a comparison of 14 galaxy formation models: 12 different semi-analytical models and 2 halo occupation distribution models for galaxy formation based upon the same cosmological simulation and merger tree information derived from it. The participating codes have proven to be very successful in their own right but they have all been calibrated independently using various observational data sets, stellar models, and merger trees. In this paper, we apply them without recalibration and this leads to a wide variety of predictions for the stellar mass function, specific star formation rates, stellar-to-halo mass ratios, and the abundance of orphan galaxies. The scatter is much larger than seen in previous comparison studies primarily because the codes have been used outside of their native environment within which they are well tested and calibrated. The purpose of the 'nIFTy comparison of galaxy formation models' is to bring together as many different galaxy formation modellers as possible and to investigate a common approach to model calibration. This paper provides a unified description for all participating models and presents the initial, uncalibrated comparison as a baseline for our future studies where we will develop a common calibration framework and address the extent to which that reduces the scatter in the model predictions seen here.

U2 - 10.1093/mnras/stv1149

DO - 10.1093/mnras/stv1149

M3 - Article

VL - 451

SP - 4029

EP - 4059

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 4

ER -

Knebe A, Pearce FR, Thomas PA, Benson A, Blaizot J, Bower R et al. nIFTy cosmology: Comparison of galaxy formation models. Monthly Notices of the Royal Astronomical Society. 2015 Aug 21;451(4):4029-4059. https://doi.org/10.1093/mnras/stv1149