1. The mock galaxy catalogue for HI survey based on SAMs of galaxy formation富坚
Guiyang, FRA2015
Shanghai Astronomical Observatory

2. The upcoming extragalactic HI 21cm survey
ASKAP (ASKAP HI All-Sky Survey, WALLABY)
SKA (all sky HI survey after 2020)
FAST (Large-Scale Surveys for HI Emission from Galaxies, Duffy 2008)
The study of galaxy formation and evolution
The nature of dark matter
The cosmology
The mock catalogue for future HI survey

3. Large scale galaxy formation models with HI gas
Galaxy formation models including only cold gas phase in ISM
DLB07, Guo11 &13 (L-Galaxies), Bower et al (Galform)
Post-Processing models including molecular and atomic phase based on the outputs of models without two-phase gas (Obreschkow et al. 2009; Power et al. 2010)
Obreschkow & Meyer (2014) Mock catalogue for HI catalogue for SKA
The models are not self-consistent
Self consistent models of HI component in galaxy formation models
Cook et al. 2010; Fu et al & 2013; Lagos et al & 2014; Popping et al. 2014
Galaxy Formation & Dark Matter Modelling in the Era of Square Kilometre Array (Power et al. 2015, mainly based on Galform model)

4. The mock catalogue based on L-Galaxies SAMs
(version: Fu et al. 2013)
L-Galaxies models (Guo13):
Baryonic matter prescriptions describe the processes based on halo outputs of N-body cosmology simulation
Physical processes on galaxies disks are radial resolved
Include the HI & H2 transition in ISM
Krumholz et al. 2009; Mckee & Krumholz 2010: ISM surface density & metallicity
Blizt & Rosolowsky 2006: Interstellar pressure
H2 proportional star formation law

5. Millennium and Millennium II Simulation
Millennium Simulation: Springel et al. 2005
Millennium II Simulation: Boylan-Kolchin et al. 2009
The mass resolution of MS-II is 125 larger than MS: use to study dwarf galaxies and small galaxies at high z
Millennium I (MS)
Millennium II (MS-II)
Particle number
21603
Particle Mass
8.6×108M☉h-1
6.8×106 M☉h-1
Box size
500 h-1 Mpc
100 h-1 Mpc
Output snapshots
64 snapshots
Between z=0 and 127
68 snapshots
Minimum halo mass
1.7×1010M☉h-1
1.4×108M☉h-1
For the observations of HI and H2 these years, modelers try to describe
Based on n-body simulation

6. Aquarius Simulation (Springel et al. 2009)
Six halo merger trees of MW sized galaxies with different resolutions
The formation of MW and its satellites
For the observations of HI and H2 these years, modelers try to describe
Based on n-body simulation

7. Radial profiles of nearby disk galaxies
Wang, Fu et al. 2014
Fu et al. 2010

8. scale relations at z=0 mass functions at z=0 Fu et al. 2010

9. The redshift evolution of H2 and HI
Fu et al. 2012
The redshift evolution for HI and H2 gas in the model results

10. Tight correlation between HI mass and R12
HI size-mass relation
Correlation between HI mass and R11.96 (Broeils & Rhee 1997)
Wang, Fu et al. 2014
Tight correlation between HI mass and R12

11. The mock catalogue based on model results
The limit of telescope
Periodic box at different z
Observers framework
Kitzbichler & White 2006; Blaizot et al. 2005

12. The mock galaxy catalogue for HI survey
Mock method: Kitzbichler & White 2006; Blaizot et al. 2005
HI gas in low redshift (z<0.3) galaxies
HI gas in dwarf satellite galaxies in local group
HI gas mock for high redshift HI survey

13. The HI gas in low redshift (z<0.3) galaxies
Similar to the galaxies in ALFALFA
Based on model results on Millennium I & II Haloes
Can be a guide of HI observation for FAST early science

14. HI gas in dwarf galaxies in local group
Based on model results on Aquarius haloes at z=0
Test the validity of cold dark matter
The models and mock catalogue based on warm dark matter (Wang et al’s work)

15. HI gas in galaxies and clusters at high redshift
Based on the model results at high z (0.3-2)
The HI content in galaxies and clusters
The HI gas content in the beam of radio telescope (e.g 2.9 arcmin for FAST L-band)
The redshift evolution of HI gas (e.g ΩHI)

16. Conclusions
The results of our L-Galaxies SAMs can build mock galaxy catalogue for HI survey in the near future
We can give the extragalactic mock catalogue for HI component in local group, nearby disk galaxies and neutral hydrogen gas in galaxies/clusters at high redshift
The mock catalogues can guide the HI extragalactic survey and help to study the galaxy formation, dark matter, etc
Thank you!