PhDLspec stellar abundance catalog of LAMOST subgiant stars

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This catalog provides stellar atmospheric parameters (Teff, log g, [Fe/H]) and 25 elemental abundance ratios ([X/Fe]) for LAMOST subgiant stars derived using PhDLspec method. The reported abundance ratios include the following elements:C, N, O, Na, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Co, Ni, Sr, Y, Zr, Ba, La, Ce, Pr, Nd, Sm, and Eu. The parent sample of subgiants was identified by Xiang & Rix (2022) using Gaia DR3 and LAMOST DR7 data. In this work, we apply PhDLspec to derive stellar atmospheric parameters and elemental abundances from LAMOST spectra for 116,611 subgiants with spectral signal-to-noise ratios greater than 50. If you use this catalog in scientific work, please cite: Wu,T. et al. (2026), PhDLspec: physical-prior embedded deep learning method for spectroscopic determination of stellar labels in high-dimensional parameter space. Zenodo. https://doi.org/10.5281/zenodo.19046403

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