J. -R. Shi — Scifaro

Discovery of Nine Super Li-rich Unevolved Stars from the LAMOST Survey

Based on the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) medium-resolution spectroscopic survey (MRS), we report the discovery of nine super Li-rich unevolved stars with A(Li) $>$ 3.8 dex. These objects show unusually…

Solar and Stellar Astrophysics · Physics 2022-04-20 T. -S. Yan , J. -R. Shi , L. Wang , H. -L. Yan , Z. -M. Zhou , Y. -T. Zhou , X. -S. Fang , C. -Q. Li , T. -Y. Chen , X. -J. Xie

Search for the metal-weak thick disk from the LAMOST DR5

Based on the data release of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope survey (LAMOST DR5) and the \emph{Gaia} Early Data Release 3 (\emph{Gaia} EDR3), we construct a sample containing 46,109 giant (log~$\emph{g}$…

Astrophysics of Galaxies · Physics 2022-02-16 T. -S. Yan , J. -R. Shi , H. Tian , W. Zhang , B. Zhang

The Milky Way Revealed by Variable Stars I: Sample Selection of RR Lyrae stars, and Evidence for the Merger History

In order to study the Milky Way, RR Lyrae (RRL) variable stars identified by Gaia, ASAS-SN and ZTF sky survey projects have been analyzed as tracers in this work. Photometric and spectroscopic information of 3417 RRLs including proper…

Astrophysics of Galaxies · Physics 2022-01-26 I. Ablimit , G. Zhao , U. Teklimakan , J. -R. Shi , K. Abdusalam

The white dwarf binary pathways survey V. The Gaia white dwarf plus AFGK binary sample and the identification of 23 close binaries

Close white dwarf binaries consisting of a white dwarf and an A, F, G or K type main sequence star, henceforth close WD+AFGK binaries, are ideal systems to understand the nature of type Ia supernovae progenitors and to test binary evolution…

Solar and Stellar Astrophysics · Physics 2020-12-16 J. -J. Ren , R. Raddi , A. Rebassa-Mansergas , M. S. Hernandez , S. G. Parsons , P. Irawati , P. Rittipruk , M. R. Schreiber , B. T. Gansicke , S. Torres , H. -J. Wang , J. -B. Zhang , Y. Zhao , Y. -T. Zhou , Z. -W. Han , B. Wang , C. Liu , X. -W. Liu , Y. Wang , J. Zheng , J. -F. Wang , F. Zhao , K. -M. Cui , J. -R. Shi , H. Tian

The First Data Release (DR1) of the LAMOST general survey

The Large sky Area Multi-Object Spectroscopic Telescope (LAMOST) General Survey is a spectroscopic survey that will eventually cover approximately half of the celestial sphere and collect 10 million spectra of stars, galaxies and QSOs.…

Astrophysics of Galaxies · Physics 2020-07-22 A. -L. Luo , Y. -H. Zhao , G. Zhao , L. -C. Deng , X. -W. Liu , Y. -P. Jing , G. Wang , H. -T Zhang , J. -R. Shi , X. -Q. Cui , Y. -Q. Chu , G. -P. Li , Z. -R. Bai , Y. Cai , S. -Y. Cao , Z. -H Cao , J. L. Carlin , H. Y. Chen , J. -J. Chen , K. -X. Chen , L. Chen , X. -L. Chen , X. -Y. Chen , Y. Chen , N. Christlieb , J. -R. Chu , C. -Z. Cui , Y. -Q. Dong , B. Du , D. -W. Fan , L. Feng , J. -N Fu , P. Gao , X. -F. Gong , B. -Z. Gu , Y. -X. Guo , Z. -W. Han , B. -L. He , J. -L. Hou , Y. -H. Hou , W. Hou , H. -Z. Hu , N. -S. Hu , Z. -W. Hu , Z. -Y. Huo , L. Jia , F. -H. Jiang , X. Jiang , Z. -B. Jiang , G. Jin , X. Kong , X. Kong , Y. -J. Lei , A. -H. Li , C. -H. Li , G. -W. Li , H. -N. Li , J. Li , Q. Li , S. Li , S. -S. Li , X. -N. Li , Y. Li , Y. -B. Li , Y. -P. Li , Y. Liang , C. -C. Lin , C. Liu , G. -R. Liu , G. -Q. Liu , Z. -G. Liu , W. -Z. Lu , Y. Luo , Y. -D. Mao , H. Newberg , J. -J. Ni , Z. -X. Qi , Y. -J. Qi , S. -Y. Shen , H. -M. Shi , J. Song , Y. -H. Song , D. -Q. Su , H. -J. Su , Z. -H. Tang , Q. -S. Tao , Y. Tian , D. Wang , D. -Q. Wang , F. -F. Wang , G. -M. Wang , H. Wang , H. -C. Wang , J. Wang , J. -N. Wang , J. -L. Wang , J. -P. Wang , J. -X. Wang , L. Wang , M. -X. Wang , S. -G. Wang , S. -Q. Wang , X. Wang , Y. -N. Wang , Y. Wang , Y. -F. Wang , Y. -F. Wang , P. Wei , M. -Z. Wei , H. Wu , K. -F. Wu , X. -B. Wu , Y. Wu , Y. Z. Wu , X. -Z. Xing , L. -Z. Xu , X. -Q. Xu , Y. Xu , T. -S. Yan , D. -H. Yang , H. -F. Yang , H. -Q. Yang , M. Yang , Z. -Q. Yao , Y. Yu , H. Yuan , H. -B. Yuan , H. -L. Yuan , W. -M. Yuan , C. Zhai , E. -P. Zhang , H. W. Zhang , J. -N. Zhang , L. -P. Zhang , W. Zhang , Y. Zhang , Y. -X. Zhang , Z. -C. Zhang , M. Zhao , F. Zhou , X. Zhou , J. Zhu , Y. -T. Zhu , S. -C. Zou , F. Zuo

Properties of Radial Velocities measurement based on LAMOST-II Medium-Resolution Spectroscopic Observations

The radial velocity (RV) is a basic physical quantity which can be determined through Doppler shift of the spectrum of a star. The precision of RV measurement depends on the resolution of the spectrum we used and the accuracy of wavelength…

Solar and Stellar Astrophysics · Physics 2019-11-20 R. Wang , A. -L. Luo , J. -J. Chen , Z. -R. Bai , L. Chen , X. -F. Chen , S. -B. Dong , B. Du , J. -N. Fu , Z. -W. Han , J. -L. Hou , Y. -H. Hou , W. Hou , D. -K. Jiang , X. Kong , L. -F. Li , C. Liu , J. -M. Liu , L. Qin , J. -R. Shi , H. Tian , H. Wu , C. -J. Wu , J. -W. Xie , H. -T. Zhang , S. Zhang , G. Zhao , Y. -H. Zhao , J. Zhong , W. -K. Zong , F. Zuo

The Large Sky Area Multi-Object Fiber Spectroscopic Telescope Quasar Survey: Quasar Properties from First Data Release

We present preliminary results of the quasar survey in Large Sky Area Multi- Object Fiber Spectroscopic Telescope (LAMOST) first data release (DR1), which includes pilot survey and the first year regular survey. There are 3921 quasars…

Astrophysics of Galaxies · Physics 2016-01-27 Y. L. Ai , Xue-Bing Wu , Jinyi Yang , Qian Yang , Feige Wang , Rui Guo , Wenwen Zuo , Xiaoyi Dong , Y. -X. Zhang , H. -L. Yuan , Y. -H. Song , Jianguo Wang , Xiaobo Dong , M. Yang , H. Wu , S. -Y. Shen , J. -R. Shi , B. -L. He , Y. -J. Lei , Y. -B. Li , A. -L. Luo , Y. -H. Zhao , Hao-Tong Zhang

Systematic NLTE study of the -2.6 < [Fe/H] < 0.2 F and G dwarfs in the solar neighbourhood. I. Stellar atmosphere parameters

We present atmospheric parameters for 51 nearby FG dwarfs uniformly distributed over the -2.60 < [Fe/H] < +0.20 metallicity range that is suitable for the Galactic chemical evolution research. Lines of iron, Fe I and Fe II, were used to…

Solar and Stellar Astrophysics · Physics 2015-08-06 T. Sitnova , G. Zhao , L. Mashonkina , Y. Q. Chen , F. Liu , Yu. Pakhomov , K. Tan , M. Bolte , S. Alexeeva , F. Grupp , J. -R. Shi , H. -W. Zhang

LSS-GAC - A LAMOST Spectroscopic Survey of the Galactic Anti-center

As a major component of the LAMOST Galactic surveys, the LAMOST Spectroscopic Survey of the Galactic Anti-center (LSS-GAC) will survey a significant volume of the Galactic thin/thick disks and halo in a contiguous sky area of ~…

Astrophysics of Galaxies · Physics 2015-06-16 X. -W. Liu , H. -B. Yuan , Z. -Y. Huo , L. -C. Deng , J. -L. Hou , Y. -H. Zhao , G. Zhao , J. -R. Shi , A. -L. Luo , M. -S. Xiang , H. -H. Zhang , Y. Huang , H. -W. Zhang

A non-LTE study of neutral and singly-ionized iron line spectra in 1D models of the Sun and selected late-type stars

A comprehensive model atom for Fe with more than 3000 energy levels is presented. As a test and first application of this model atom, Fe abundances are determined for the Sun and five stars with well determined stellar parameters and…

Solar and Stellar Astrophysics · Physics 2015-05-27 L. Mashonkina , T. Gehren , J. -R. Shi , A. J. Korn , F. Grupp