Collaboration Workshop on Cosmology and Galaxy Formation

Session

Survey

Jun 19, 2023, 9:10 AM

3rd floor meeting room (SJTU & Suzhou Bay)

Conveners

Survey

• Xiaohu Yang (上海交通大学)

23. Galaxy simulation for the High Latitude Spectroscopic Survey on the Nancy Grace Roman Space Telescope

Zhongxu Zhai (Shanghai Jiao Tong University)

6/19/23, 9:10 AM

Evolution

Talk

Nancy Grace Roman space telescope will conduct a High Latitude Spectroscopic Survey (HLSS) over 2000 square degrees at high redshift. I will introduce the flowdown of the Roman science objectives of galaxy and cosmology based on numerical simulations. With this reference model, we forecast the performance of the survey, including the galaxy type, number density, clustering property and...

6. 面向下一代大尺度巡天的超级数值模拟

Qiao Wang (NAOC)

6/19/23, 9:30 AM

Simulation

Talk

介绍面向下一代大尺度巡天建立的4万亿粒子的数值模拟，以及在此基础上建立的数值模拟星表

53. DESI Legacy Imaging Surveys Data Release 9: Cosmological Constraints from Galaxy Clustering and Weak Lensing using the Minimal Bias Model

浩杰 许 (上海天文台)

6/19/23, 9:50 AM

Talk

We constrain cosmological parameters Ωm and σ8 from a joint analysis of galaxy clustering and galaxy-galaxy lensing from DESI Legacy Imaging Surveys Data Release 9 (DR9), covering approximately 10000 square degrees and spanning the redshift range of 0.1 to 0.9. In order to study the cosmological parameters dependence on redshift, we divide the galaxies into seven volume-limited lens samples,...

42. The role of environment in the formation of optically red spiral galaxies

Rui Guo

6/19/23, 10:10 AM

Evolution

Talk

To understand the formation of massive red spirals, we select optically red spirals with $M_{*}> 10^{10.5} M_{☉}$ based on the u-r color-stellar mass diagram from SDSS DR7 and compared the environment of these spirals with different NUV-r colors. All optically red galaxies have similar properties in the center, i.e., no star formation activity, similar bulge size, central velocity dispersion...

16. Strong gravitational lensing in the Era of CSST

Li Ran

Halo

Talk

CSST is a 2m space-based telescope, designed to work in Low Earth Orbit for 10 years from ~2024. It will image 17,500 square degrees in six near-UV and optical bands (u,g,r,i,z,y) to an average depth of 25.5 AB (5-sigma point source) and a combined depth of 26 AB (5-sigma point source), with the angular resolution R80 = 0.15", providing a unique and promising platform to study the structure of...