CAS Members
Jianrong Shi

Positions
Researcher/Professor
Academic title
Astronomer/Professor
Phone
010-64888708
E-mail
sjr@bao.ac.cn
Website(s)
yac.bao.ac.cn
yac.bao.ac.cn/~sjr
Mailing Address
A419, National Astronomical Observatories, Chinese Academy of Sciences 20A Datun Road, Chaoyang District, Beijing, China, 100012

Education and Career History
1995  Diploma in Astrophysics, Peking University
1995-1998 PhD student in Theoretical Physics at Shanghai Jiaotong University
1998-2000 Post-Doctor in Astrophysics at National Astronomical Observatories, Chinese       Academy of Sciences
2000-2008 Associate Professor at National Astronomical Observatories, Chinese Academy of Sciences
2008- Professor at National Astronomical Observatories, Chinese Academy of Sciences
07/99 - 11/99: Visiting Astronomer, University-Sternwarte Muenchen, Germany
04/00 - 08/00: Visiting Astronomer, University-Sternwarte Muenchen, Germany
07/01 - 11/01: Visiting Astronomer, University-Sternwarte Muenchen, Germany
10/02 - 01/03: Visiting Astronomer, University-Sternwarte Muenchen, Germany
10/04 - 01/05: Visiting Astronomer, University-Sternwarte Muenchen, Germany
04/06 - 07/06: Visiting Astronomer, University-Sternwarte Muenchen, Germany
07/07 - 09/07: Visiting Astronomer, University-Sternwarte Muenchen, Germany
10/08 - 12/08: Visiting Astronomer, University-Sternwarte Muenchen, Germany
  

Research Fields
Stellar abundances; especially  the NLTE effects for some important elements, such as Li, Na, Mg, Al, Si, Fe, Cu and Zn in cool stars.
Galactic chemical evolution.

Current Research Project
1. NLTE in iron-group elements: The ionization equilibrium of iron and other iron-group element, such as Cu and Zn etc, in cool stellar atmospheres must not necessarily follow the Saha-Boltzmann equation. Observational evidence found that NLTE plays a non-negligible role in the atmospheres of cool stars. This project aims at a comprehensive and accurate study of the excitation and ionization of iron-group elements under the restrictions of different stellar parameters.
2. Abundance pattern in the first stellar generations: Synthesis of the elements beyond He is most interesting in the early universe that has left its imprints in the spectra of very metal-poor stars.
3. Tracing the evolution of lithium abundances in low pre-main-sequence stars: So far, the processes responsible for lithium depletion during pre-main-sequence evolution are still poorly understood. Hence, we believe that it would be extremely interesting to study a sample of stars with known rotation velocity. We can examine Li depletion depends on some physical and chemical properties. 
 

Professional Leadership


Selected Publication
 1. Statistical equilibrium of silicon in metal-poor stars’atmosphere J. R. Shi, T. Gehren, L. Mashonkina, G. Zhao, A&A, 503, 533 (2009)
2. Spectroscopic analyses of nearby K dwarfs X.M. Wang, J. R. Shi, G. Zhao, MNRAS, will be published (2009)
3. Beryllium abundances in metal-poor stars K. F. Tan, J. R. Shi, G. Zhao, MNRAS,392, 205 (2009)
4. Statistical equilibrium of silicon in the solar atmosphere J. R. Shi,  T. Gehren, K.
Butler,  L. Mashonkina,  G. Zhao, A&A, 486, 303 (2008)
5. Opacity studies of silicon in radiatively heated plasma H. G. Wei, J. R. Shi, G. Zhao, et al. ApJ, 683, 577 (2008)
6.  Li abundances in metal-poor stars J. R. Shi, T. Gehren, H. W. Zhang,, J. L. Zeng  G. Zhao, A&A, 465, 587 (2007)
7. Na, Mg and Al abundances as a population discriminant for nearby metal-poor stars T. Gehren, J. R. Shi, H. W. Zhang, G. Zhao, A. Korn, A&A, 451, 1065 (2006)
8. Sodium abundances in nearby disk stars J. R. Shi, T. Gehren, G. Zhao, A&A, 423, 683 (2004)
9.  Kinetic equilibrium of iron in the atmospheres of cool dwarf stars. III The ionization equilibrium of selected refrence stars A. Korn, J. R. Shi, T. Gehren, A&A, 366, 981 (2003)
10. The C and N abundances in disk stars J. R. Shi, G. Zhao, & Y. Chen, A&A, 381, 982 (2002)
Copyright © National Astronomical Observatories, Chinese Academy of Sciences
Address: 20A Datun Road, Chaoyang District, Beijing, China code: 100012
Tel: 010-64888708 E-mail: ccz@bao.ac.cn