On the Chemical Abundance of HR 8799 and the Planet c

@article{Wang2020OnTC,
  title={On the Chemical Abundance of HR 8799 and the Planet c},
  author={Ji 吉 Wang 王 and Jason J. 飞 Wang 王劲 and Bo Ma and Jeffrey K. Chilcote and Steve Ertel and Olivier Guyon and Ilya V. Ilyin and Nemanja Jovanovic and Paul Kalas and Julien Lozi and Bruce A. Macintosh and Klaus G. Strassmeier and Jordan M. Stone},
  journal={The Astronomical Journal},
  year={2020},
  volume={160}
}
Comparing chemical abundances of a planet and the host star reveals the origin and formation pathway of the planet. Stellar abundance is measured with high-resolution spectroscopy. Planet abundance, on the other hand, is usually inferred from low-resolution data. For directly imaged exoplanets, the data are available from a slew of high-contrast imaging/spectroscopy instruments. Here, we study the chemical abundance of HR 8799 and its planet c. We measure stellar abundance using LBT/PEPSI (R… 
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