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, Sofia Alejandra
- Croton, Darren J.
- Cui, Weiguang
- Cunnama, Daniel
- Devriendt, Julien E.
- Elahi, Pascal J.
- Font, Andreea
- Fontanot, Fabio
- Gargiulo, Ignacio Daniel
- Helly, John
- Henriques, Bruno
- Lee, Jaehyun
- Mamon, Gary A.
- Onions, Julian
- Padilla, Nelson David
- Power, Chris
- Pujol, Arnau
- Ruiz, Andrés Nicolás
- Srisawat, Chaichalit
- Stevens, Adam R. H.
- Tollet, Edouard
- Vega Martínez, Cristian Antonio
- Yi, Sukyoung K.
DOIAbstract
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 alo...
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