3 papers
astro-ph.SR2026
A Catalog of 486 Barium Stars Identified in GALAH DR4
Guochao Yang, Jingkun Zhao, Nian Liu +4
We present a catalog of 486 Ba stars identified in the GALAH DR4 survey using high-resolution spectra and precise abundance measurements. The sample was selected based on s-process…
astro-ph.SR2026
Deep learning-driven atmospheric parameter prediction for hot subdwarf stars with synthetic and observed spectra
Zhenxin Lei, Yangyang Dong, Bokai Kou +4
We design a convolutional neural network (CNN) incorporating channel attention and spatial attention mechanisms to predict atmospheric parameters of hot subdwarfs. The experimental…
astro-ph.SR2024
MK-like spectral classification for hot subdwarf stars with LAMOST spectra
Xuan Zou, Zhenxin Lei
An MK-like spectral classification has been conducted for 1224 hot subdwarf stars with LAMOST DR9 low-resolution spectra. The whole sample was divided into four categories accordin…