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Dynamics and Eccentricity Formation of Planets in OGLE-06-109L System
Su Wang, Gang Zhao, Ji-Lin Zhou
Recent observation of microlensing technique reveals two giant planets at 2.3 AU and 4.6 AU around the star OGLE-06-109L. The eccentricity of the outer planet (ec) is estimated to…
X-ray Astronomy in the Laboratory with a Miniature Compact Object Produced by Laser-Driven Implosion
Shinsuke Fujioka, Hideaki Takabe, Norimasa Yamamoto +16
Laboratory spectroscopy of non-thermal equilibrium plasmas photoionized by intense radiation is a key to understanding compact objects, such as black holes, based on astronomical o…
The Absolute Magnitudes of Red Horizontal Branch Stars in the ugriz System
Y. Q. Chen, G. Zhao, J. K. Zhao
Based on photometric data of the central parts of eight globular clusters and one open cluster presented by An and his collaborators, we select red horizontal branch (RHB) stars in…
Chemical Compositions of Kinematically Selected Outer Halo Stars
Lan Zhang, Miho Ishigaki, Wako Aoki +2
Chemical abundances of 26 metal-poor dwarfs and giants are determined from high-resolution and high signal-to-noise ratio spectra obtained with Subaru/HDS. The sample is selected s…
A Catalog of Moving Group Candidates in The Solar Neighborhood
Jingkun Zhao, Gang Zhao, Yuqin Chen
Based on the kernel estimator and wavelet technique, we have identified 22 moving group candidates in the solar neighborhood from a sample which includes around 14,000 dwarfs and 6…