An Update of the Catalog of Radial Velocity Standard Stars from the APOGEE DR17  

作　　者：Qing-Zheng Li Yang Huang Xiao-Bo Dong Jian-Jun Chen A-Li Luo 

机构地区：[1]Yunnan Observatories,Chinese Academy of Sciences,Kunming,Yunnan 650011,China [2]School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 100049,China [3]CSA Key Laboratory of Optical Astronomy,National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China [4]Key Laboratory of Space Astronomy and Technology,National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China

出　　处：《Research in Astronomy and Astrophysics》2023年第11期243-251,共9页天文和天体物理学研究（英文版）

基　　金：supported by National Key R&D Program of China No.2019YFA0405102,2019YFA0405500;National Natural Science Foundation of China(NSFC,Grant Nos.11903027,11973001,11833006,U1731108,12090040and 12090044);Funding for the Sloan Digital Sky SurveyⅣhas been provided by the Alfred P.Sloan Foundation;the U.S.Department of Energy Office of Science;support and resources from the Center for High-Performance Computing at the University of Utah。

摘　　要：We present an updated catalog of 46,753 radial velocity(RV)standard stars selected from the APOGEE DR17.These stars cover the Northern and Southern Hemispheres almost evenly,with 62%being red giants and 38%being main sequence stars.These RV standard stars are stable on a baseline longer than 200 days(with 54%longer than one year and 10%longer than five years)with a median stability better than 215 m s~(-1).The average number of observations of those stars is 5 and each observation is required to have signal-to-noise ratio greater than50 and RV measurement error smaller than 500 m s~(-1).Based on the new APOGEE RV standard star catalog,we have checked the RV zero-points(RVZPs)for current large-scale stellar spectroscopic surveys including RAVE,LAMOST,GALAH and Gaia.By careful analysis,we estimate their mean RVZP to be+0.149 kms~(-1),+4.574 km s~(-1)(for LRS),-0.031 km s~(-1)and+0.014 kms~(-1),respectively,for the four surveys.In the RAVE,LAMOST(for MRS),GALAH and Gaia surveys,RVZP exhibits a systematic trend with stellar parameters(mainly[Fe/H],T_(eff),log g,G_(BP)-G_(RP)and G_(RVS)).The corrections to those small but clear RVZPs are of vital importance for these massive spectroscopic surveys in various studies that require extremely high RV accuracies.

关 键 词：stars:fundamental parameters (stars:)binaries:general stars:general catalogs 

分 类 号：P152[天文地球—天文学]