The mock galaxy catalogue for HI survey based on SAMs of galaxy formation 富坚 fujian@shao.ac.cn 2015-07-31 Guiyang, FRA2015 Shanghai Astronomical Observatory

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

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. 2006 (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. 2010 & 2013; Lagos et al. 2011 & 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)

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

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

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

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

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

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

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

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

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

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

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)

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)

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!