Open Access

Table 1

Summary of training datasets used for neural network (NN) and random forest (RF) models.

Dwarfs Giants


APOGEE GALAH LAMOST APOGEE GALAH LAMOST






Parameter Min Max N Min Max N Min Max N Min Max N Min Max N Min Max N
Teff 3296 8186 8885 3156 7965 24 740 4025 6830 2863 3651 5540 5500 3813 5721 4840 4158 5849 190
log g 2.40 5.18 8805 2.91 4.99 24 700 1.96 4.90 2852 −0.18 3.66 5500 0.93 3.68 4842 0.31 4.53 190
[Fe/H] −1.42 0.46 8673 −1.76 1.00 24 479 −1.61 0.42 2856 −2.44 0.47 5484 −2.33 1.00 4811 −1.92 0.33 190
[α/M] −0.30 0.41 8692 −0.41 0.55 23 819 −0.14 0.30 2146 −0.31 0.71 5479 −0.40 0.66 4724 −0.02 0.33 107
[C/Fe] −0.49 0.47 8667 −1.14 1.55 18 116 −0.31 0.31 2145 −1.18 1.03 5461 −0.42 1.43 332 −0.18 0.38 106
[Ca/Fe] −0.43 0.48 8403 −0.63 0.77 23 328 −0.31 0.41 2146 −0.45 0.68 5425 −0.53 0.75 4624 −0.09 0.29 107
[N/Fe] −1.00 1.24 6532 −0.26 0.50 2145 −0.66 1.26 5460 −0.15 0.47 107
[Ni/Fe] −0.35 0.35 8649 −0.58 0.62 19 570 −0.13 0.14 2143 −0.45 0.49 5446 −0.62 0.72 4623 −0.06 0.11 106
[Mg/Fe] −0.55 0.51 8698 −0.61 0.74 23 385 −0.27 0.39 2146 −0.47 0.61 5482 −0.58 0.93 4677 −0.02 0.38 107
[Si/Fe] −0.37 0.49 8692 −0.54 0.65 23 695 −0.15 0.29 2146 −0.39 0.66 5480 −0.51 0.86 4706 −0.04 0.35 107
[CI/Fe] −0.61 0.57 8609 −1.24 0.96 5425
[O/Fe] −0.65 0.77 8645 −1.19 1.46 23 745 −0.61 0.99 5468 −1.04 1.78 4678
[Na/Fe] −2.37 1.68 6678 −0.49 0.65 23 943 −1.75 1.66 5254 −0.66 0.78 4713
[Al/Fe] −0.51 0.69 6910 −0.80 1.07 23 683 −1.11 0.90 5409 −0.59 1.09 4644
[K/Fe] −0.69 0.88 8629 −0.97 1.11 23 362 −0.85 1.12 5384 −0.90 1.08 4520
[Ti/Fe] −0.88 0.91 8182 −0.86 0.98 23 344 −0.94 0.86 5332 −0.80 0.97 4730
[TiII/Fe] −1.44 0.94 669 −0.82 0.95 5243
[V/Fe] −1.74 1.56 5405 −1.70 1.66 5325
[Mn/Fe] −1.55 1.32 6853 −0.66 0.59 23 769 −1.27 1.18 5348 −0.98 0.76 4604
[Co/Fe] −1.88 2.21 685 −0.46 2.70 17 923 −1.60 1.58 5360 −0.90 1.42 4406
[Ce/Fe] −1.60 1.98 709 −1.76 1.36 5152
[Li/Fe] −1.65 4.09 20 626 −1.06 2.65 3092
[Sc/Fe] −0.54 0.70 23 896 −0.44 0.59 4732
[Cr/Fe] −0.66 0.59 23 640 −0.64 0.62 4720
[Cu/Fe] −0.68 0.76 21 796 −1.03 1.07 4709
[Zn/Fe] −0.79 0.86 23 005 −1.13 1.29 4042
[Y/Fe] −1.21 1.21 23 591 −1.12 1.39 4504

Notes. The table includes data from APOGEE, LAMOST, and GALAH surveys, organized into two categories: dwarfs and giants. Each category is divided by dataset sources, detailing the parameters used, source counts (N), and value ranges (max, min).

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