Metallic-line Stars Identified from Low-resolution Spectra of LAMOST DR5

  title={Metallic-line Stars Identified from Low-resolution Spectra of LAMOST DR5},
  author={Li Qin and Ali Luo and Wen Hou and Yin-Bi Li and Shuo Zhang and Rui Wang and Lili Wang and Xiaoming Kong and Jin-shu Han},
  journal={The Astrophysical Journal Supplement Series},
LAMOST DR5 released more than 200,000 low resolution spectra of early-type stars with S/N>50. Searching for metallic-line (Am) stars in such a large database and study of their statistical properties are presented in this paper. Six machine learning algorithms were experimented with using known Am spectra, and both the empirical criteria method(Hou et al. 2015) and the MKCLASS package(Gray et al. 2016) were also investigated. Comparing their performance, the random forest (RF) algorithm won… Expand
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  • 2021
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  • Physics
  • The Astronomical Journal
  • 2021
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