Publications (4)
The Kinematics and Chemistry of Red Horizontal Branch Stars in the Sagittarius Streams
W. B. Shi, Y. Q. Chen, K. Carrell +1
We have selelcted 556 Red Horizontal Branch (RHB) stars along the streams of the Sagittarius dwarf galaxy (Sgr) from SDSS DR7 spectroscopic data using a theoretical model. The meta…
The CH(G) Index as a New Criterion for Selecting Red Giant Stars
Y. Q. Chen, G. Zhao, K. Carrell +2
We have measured the CH G band (CH(G)) index for evolved stars in the globular cluster M3 based on the Sloan Digital Sky Survey (SDSS) spectroscopic survey. It is found that there…
The Metallicity Gradient of the Thick Disk Based on Red Horizontal Branch Stars From SDSS DR8
Y. Q. Chen, G. Zhao, K. Carrell +1
Based on SDSS DR8, we have selected a sample of 1728 red horizontal branch stars with |Z|<3 kpc by using a color-metallicity relation and stellar parameters. The sample stars clear…
Hydrogen lines in LAMOST low resolution spectra of RR Lyrae stars
F. Yang, L. Deng, C. Liu +14
The LAMOST spectroscopic survey for Galactic structure and evolution has been in operation since October 2012, following a one-year pilot survey. The pilot survey produced a data r…