On the Performances of Estimating Stellar Atmospheric Parameters from CSST Broad-band Photometry  

作　　者：Rui-Feng Shi Yang Huang Xin-Yi Li Hua-Wei Zhang 

机构地区：[1]School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 100049,China [2]South-Western Institute for Astronomy Research,Yunnan University,Kunming 650500,China [3]CAS Key Lab of Optical Astronomy,Key Laboratory of Space Astronomy and Technology,National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China [4]College of Physics and Electronic Engineering,Qilu Normal University,Jinan 250200,China [5]Department of Astronomy,School of Physics,Peking University,Beijing 100871,China [6]Kavli Institute for Astronomy and Astrophysics,Peking University,Beijing 100871,China

出　　处：《Research in Astronomy and Astrophysics》2024年第4期161-173,共13页天文和天体物理学研究（英文版）

基　　金：the science research grants from the China Manned Space Project with No.CMS-CSST-2021-A08.Y.H;the science research grants from the China Manned Space Project with No.CMS-CSST-2021-B05;the NSFC for grant Nos.11903027 and11833006;the NSFC for grant Nos.11973001,12090040,and 12090044;the National Key R&D Program of China for grant No.2019YFA0405503.H.W.Z;the National Key R&D Program of China for grant No.2019YFA0405504。

摘　　要：Deriving atmospheric parameters of a large sample of stars is of vital importance to understand the formation and evolution of the Milky Way.Photometric surveys,especially those with near-ultraviolet filters,can offer accurate measurements of stellar parameters,with the precision comparable to that from low/medium resolution spectroscopy.In this study,we explore the capability of measuring stellar atmospheric parameters from Chinese Space Station Telescope(CSST)broad-band photometry(particularly in the near-ultraviolet bands),based on synthetic colors derived from model spectra.We find that colors from the optical and near-ultraviolet filter systems adopted by CSST show significant sensitivities to the stellar atmospheric parameters,especially the metallicity.According to our mock data tests,the precision of the photometric metallicity is quite high,with typical values of0.17 and 0.20 dex for dwarf and giant stars,respectively.The precision of the effective temperature estimated from broad-band colors are within 50 K.

关 键 词：methods:data analysis stars:abundances surveys 

分 类 号：P15[天文地球—天文学]