nIFTy cosmology

Comparison of galaxy formation models

Alexander Knebe, Frazer R. Pearce, Peter A. Thomas, Andrew Benson, Jeremy Blaizot, Richard Bower, Jorge Carretero, Francisco J. Castander, Andrea Cattaneo, Sofia A. Cora, Darren J. Croton, Weiguang Cui, Daniel Cunnama, Gabriella De Lucia, Julien E. Devriendt, Pascal J. Elahi, Andreea Font, Fabio Fontanot, Juan Garcia-Bellido, Ignacio D. Gargiulo & 16 others Violeta Gonzalez-Perez, John Helly, Bruno Henriques, Michaela Hirschmann, Jaehyun Lee, Gary A. Mamon, Pierluigi Monaco, Julian Onions, Nelson D. Padilla, Chris Power, Arnau Pujol, Ramin A. Skibba, Rachel S. Somerville, Chaichalit Srisawat, Cristian A. Vega-Martínez, Sukyoung Yi

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

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
Number of pages31
JournalMonthly Notices of the Royal Astronomical Society
Volume451
Issue number4
DOIs
Publication statusPublished - 2015 Apr 24

Fingerprint

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

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Knebe, A., Pearce, F. R., Thomas, P. A., Benson, A., Blaizot, J., Bower, R., ... Yi, S. (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, Alexander ; Pearce, Frazer R. ; Thomas, Peter A. ; Benson, Andrew ; Blaizot, Jeremy ; Bower, Richard ; Carretero, Jorge ; Castander, Francisco J. ; Cattaneo, Andrea ; Cora, Sofia A. ; 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 D. ; Gonzalez-Perez, Violeta ; Helly, John ; Henriques, Bruno ; Hirschmann, Michaela ; Lee, Jaehyun ; Mamon, Gary A. ; Monaco, Pierluigi ; Onions, Julian ; Padilla, Nelson D. ; Power, Chris ; Pujol, Arnau ; Skibba, Ramin A. ; Somerville, Rachel S. ; Srisawat, Chaichalit ; Vega-Martínez, Cristian A. ; Yi, Sukyoung. / 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, PJ, 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, S 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, Alexander; Pearce, Frazer R.; Thomas, Peter A.; Benson, Andrew; Blaizot, Jeremy; Bower, Richard; Carretero, Jorge; Castander, Francisco J.; Cattaneo, Andrea; Cora, Sofia A.; 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 D.; Gonzalez-Perez, Violeta; Helly, John; Henriques, Bruno; Hirschmann, Michaela; Lee, Jaehyun; Mamon, Gary A.; Monaco, Pierluigi; Onions, Julian; Padilla, Nelson D.; Power, Chris; Pujol, Arnau; Skibba, Ramin A.; Somerville, Rachel S.; Srisawat, Chaichalit; Vega-Martínez, Cristian A.; Yi, Sukyoung.

In: Monthly Notices of the Royal Astronomical Society, Vol. 451, No. 4, 24.04.2015, p. 4029-4059.

Research output: Contribution to journalArticle

TY - JOUR

T1 - nIFTy cosmology

T2 - Comparison of galaxy formation models

AU - Knebe, Alexander

AU - Pearce, Frazer R.

AU - Thomas, Peter A.

AU - Benson, Andrew

AU - Blaizot, Jeremy

AU - Bower, Richard

AU - Carretero, Jorge

AU - Castander, Francisco J.

AU - Cattaneo, Andrea

AU - Cora, Sofia A.

AU - Croton, Darren J.

AU - Cui, Weiguang

AU - Cunnama, Daniel

AU - De Lucia, Gabriella

AU - Devriendt, Julien E.

AU - Elahi, Pascal J.

AU - Font, Andreea

AU - Fontanot, Fabio

AU - Garcia-Bellido, Juan

AU - Gargiulo, Ignacio D.

AU - Gonzalez-Perez, Violeta

AU - Helly, John

AU - Henriques, Bruno

AU - Hirschmann, Michaela

AU - Lee, Jaehyun

AU - Mamon, Gary A.

AU - Monaco, Pierluigi

AU - Onions, Julian

AU - Padilla, Nelson D.

AU - Power, Chris

AU - Pujol, Arnau

AU - Skibba, Ramin A.

AU - Somerville, Rachel S.

AU - Srisawat, Chaichalit

AU - Vega-Martínez, Cristian A.

AU - Yi, Sukyoung

PY - 2015/4/24

Y1 - 2015/4/24

N2 - 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 - 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.

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UR - http://www.scopus.com/inward/citedby.url?scp=84940118219&partnerID=8YFLogxK

U2 - 10.1093/mnras/stv1149

DO - 10.1093/mnras/stv1149

M3 - Article

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JO - Monthly Notices of the Royal Astronomical Society

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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 Apr 24;451(4):4029-4059. https://doi.org/10.1093/mnras/stv1149