Chinese Space Survey Telescope (CSST)

In this page, we are sharing the mock galaxy catalogs and random samples to test the performance of the future CSST slitless spectroscopic redshift surveys.

Before we use the real CSST observational data, we make use of the DESI image legacy surveys DR9 sky-coverage to make our test.

DESI DR9 seed galaxy catalogue

DESI seed data Readme DESI 5-band magnitudes Slitless redshifts

Galaxy Catalogue

In this part, we put the original mock galaxy catalogs here. The galaxies are generated via the conditional stellar mass function model of Yang et al. (2012). Then the stellar mass of galaxies are matched with the DESI LS DR9 z-band galaxy luminosities. We keep galaxies with redshift z<1.0 and magnitude m_z<21. In order to properly model the SPECTRA for each galaxy, we matched each galaxy in our sample with the one in the DESI LS DR9 group catalog (Yang et al. 2021) according to its redshift, luminosity and halo mass. The catalogs presented here will be used to test the performace of the future CSST slitless spectroscopic observations.

From Uchuu simulation Readme Galaxy catalogue Random catalogue Matched with DESI galaxies

In this part, we provide the mock galaxy catalogs generated from Jiutian simulation. We have used the subhalo light-cone to generate mock galaxy catalog, so that the evolution of halos/galaxies are properly taken into account. The galaxy luminosity function is matched with DESI SV3 with m_z<19.5.

From Jiutian simulation Readme Galaxy catalogue Random catalogue Matched with DESI galaxies

References

Evolution of the Galaxy-Dark Matter Connection and the Assembly of Galaxies in Dark Matter Halos
Yang X., Mo H.J., van den Bosch F.C.,Zhang Youcai, Han Jiaxin, 2012, ApJ, 752, 41

An Extended Halo-based Group/Cluster Finder: Application to the DESI Legacy Imaging Surveys DR8
Yang, Xiaohu; Xu, Haojie; He, Min; Gu, Yizhou; Katsianis, Antonios; Meng, Jiacheng; Shi, Feng; Zou, Hu; Zhang, Youcai; Liu, Chengze; Wang, Zhaoyu; Dong, Fuyu; Lu, Yi; Li, Qingyang; Chen, Yangyao; Wang, Huiyuan; Mo, Houjun; Fu, Jian; Guo, Hong; Leauthaud, Alexie; Luo, Yu; Zhang, Jun; Zu, Ying, 2021, ApJ, 909, 143

Comments to:  czliu@sjtu.edu.cn