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

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

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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 of 0.17 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.

methods:data analysisstars:abundancessurveys

Rui-Feng Shi、Yang Huang、Xin-Yi Li、Hua-Wei Zhang

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School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 100049,China

South-Western Institute for Astronomy Research,Yunnan University,Kunming 650500,China

CAS Key Lab of Optical Astronomy,Key Laboratory of Space Astronomy and Technology,National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China

College of Physics and Electronic Engineering,Qilu Normal University,Jinan 250200,China

Department of Astronomy,School of Physics,Peking University,Beijing 100871,China

Kavli Institute for Astronomy and Astrophysics,Peking University,Beijing 100871,China

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science research grants from the China Manned Space ProjectNSFCNSFCNational Key R&D Program of ChinaNSFCNSFCNSFCNational Key R&D Program of Chinascience research grants from the China Manned Space Project

CMS-CSST-2021-A0811903027118330062019YFA04055031197300112090040120900442019YFA0405504CMS-CSST-2021-B05

2024

10.1088/1674-4527/ad2dbd

天文和天体物理学研究
中国科学院国家天文台

天文和天体物理学研究

CSTPCD
影响因子：0.406
ISSN：1674-4527
年,卷(期)：2024.24(4)