CSST large-scale structure analysis pipeline: I. constructing reference mock galaxy redshift surveys
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2024
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866917614997995520 |
|---|---|
| author | Gu, Yizhou Yang, Xiaohu Han, Jiaxin Wang, Yirong Li, Qingyang Tan, Zhenlin Jiang, Wenkang Wang, Yaru Wang, Jiaqi Katsianis, Antonios Xu, Xiaoju Xu, Haojie Hong, Wensheng Mo, Houjun Wen, Run Zheng, Xianzhong Shi, Feng Zhang, Pengjie Zhai, Zhongxu Liu, Chengze Wang, Wenting Zu, Ying Guo, Hong Zhang, Youcai Lu, Yi Zheng, Yi Han, Yunkun Zou, Hu Wang, Xin Wei, Chengliang Li, Ming Luo, Yu |
| author_facet | Gu, Yizhou Yang, Xiaohu Han, Jiaxin Wang, Yirong Li, Qingyang Tan, Zhenlin Jiang, Wenkang Wang, Yaru Wang, Jiaqi Katsianis, Antonios Xu, Xiaoju Xu, Haojie Hong, Wensheng Mo, Houjun Wen, Run Zheng, Xianzhong Shi, Feng Zhang, Pengjie Zhai, Zhongxu Liu, Chengze Wang, Wenting Zu, Ying Guo, Hong Zhang, Youcai Lu, Yi Zheng, Yi Han, Yunkun Zou, Hu Wang, Xin Wei, Chengliang Li, Ming Luo, Yu |
| contents | In this paper, we set out to construct a set of reference mock galaxy redshift surveys (MGRSs) for the future Chinese Space-station Survey Telescope (CSST) observation, where subsequent survey selection effects can be added and evaluated. This set of MGRSs is generated using the dark matter subhalos extracted from a high-resolution Jiutian $N$-body simulation of the standard $Λ$CDM cosmogony with $Ω_m=0.3111$, $Ω_Λ=0.6889$, and $σ_8=0.8102$. The simulation has a boxsize of $1~h^{-1} {\rm Gpc}$, and consists of $6144^3$ particles with mass resolution $3.723 \times 10^{8} h^{-1} M_\odot $. In order to take into account the effect of redshift evolution, we first use all 128 snapshots in the Jiutian simulation to generate a light-cone halo/subhalo catalog. Next, galaxy luminosities are assigned to the main and subhalo populations using the subhalo abundance matching (SHAM) method with the DESI $z$-band luminosity functions at different redshifts. Multi-band photometries, as well as images, are then assigned to each mock galaxy using a 3-dimensional parameter space nearest neighbor sampling of the DESI LS observational galaxies and groups. Finally, the CSST and DESI LS survey geometry and magnitude limit cuts are applied to generate the required MGRSs. As we have checked, this set of MGRSs can generally reproduce the observed galaxy luminosity/mass functions within 0.1 dex for galaxies with $L > 10^8 L_\odot$ (or $M_* > 10^{8.5} M_\odot$) and within 1-$σ$ level for galaxies with $L < 10^8L_\odot$ (or $M_* < 10^{8.5} M_\odot$). Together with the CSST slitless spectra and redshifts for our DESI LS seed galaxies that are under construction, we will set out to test various slitless observational selection effects in subsequent probes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_10754 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | CSST large-scale structure analysis pipeline: I. constructing reference mock galaxy redshift surveys Gu, Yizhou Yang, Xiaohu Han, Jiaxin Wang, Yirong Li, Qingyang Tan, Zhenlin Jiang, Wenkang Wang, Yaru Wang, Jiaqi Katsianis, Antonios Xu, Xiaoju Xu, Haojie Hong, Wensheng Mo, Houjun Wen, Run Zheng, Xianzhong Shi, Feng Zhang, Pengjie Zhai, Zhongxu Liu, Chengze Wang, Wenting Zu, Ying Guo, Hong Zhang, Youcai Lu, Yi Zheng, Yi Han, Yunkun Zou, Hu Wang, Xin Wei, Chengliang Li, Ming Luo, Yu Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics In this paper, we set out to construct a set of reference mock galaxy redshift surveys (MGRSs) for the future Chinese Space-station Survey Telescope (CSST) observation, where subsequent survey selection effects can be added and evaluated. This set of MGRSs is generated using the dark matter subhalos extracted from a high-resolution Jiutian $N$-body simulation of the standard $Λ$CDM cosmogony with $Ω_m=0.3111$, $Ω_Λ=0.6889$, and $σ_8=0.8102$. The simulation has a boxsize of $1~h^{-1} {\rm Gpc}$, and consists of $6144^3$ particles with mass resolution $3.723 \times 10^{8} h^{-1} M_\odot $. In order to take into account the effect of redshift evolution, we first use all 128 snapshots in the Jiutian simulation to generate a light-cone halo/subhalo catalog. Next, galaxy luminosities are assigned to the main and subhalo populations using the subhalo abundance matching (SHAM) method with the DESI $z$-band luminosity functions at different redshifts. Multi-band photometries, as well as images, are then assigned to each mock galaxy using a 3-dimensional parameter space nearest neighbor sampling of the DESI LS observational galaxies and groups. Finally, the CSST and DESI LS survey geometry and magnitude limit cuts are applied to generate the required MGRSs. As we have checked, this set of MGRSs can generally reproduce the observed galaxy luminosity/mass functions within 0.1 dex for galaxies with $L > 10^8 L_\odot$ (or $M_* > 10^{8.5} M_\odot$) and within 1-$σ$ level for galaxies with $L < 10^8L_\odot$ (or $M_* < 10^{8.5} M_\odot$). Together with the CSST slitless spectra and redshifts for our DESI LS seed galaxies that are under construction, we will set out to test various slitless observational selection effects in subsequent probes. |
| title | CSST large-scale structure analysis pipeline: I. constructing reference mock galaxy redshift surveys |
| topic | Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2403.10754 |