Training tweaks (augmentations, hybrid loss, scheduling, ablation flags) raise optic disc Dice from 0.939 (baseline epoch 5) to 0.956 (final epoch) on a fundus benchmark.
Mg, Al, Si, Ca, Ti, Fe, and Ni abundance for a sample of solar analogues
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abstract
We report on the determination of chemical abundances of 38 solar analogues, including 11 objects previously identified as super metal-rich stars. We have measured the equivalent widths for 34 lines of 7 different chemical elements (Mg, Al, Si, Ca, Ti, Fe, and Ni) in high-resolution ($\mathcal{R} \sim 80\,000$) spectroscopic images, obtained at the Observatorio Astrof\'isico Guillermo Haro (Sonora, Mexico), with the Cananea High-resolution Spectrograph. We derived chemical abundances using ATLAS12 model atmospheres and the Fortran code MOOG. We confirmed the super metallicity status of 6 solar analogues. Within our sample, BD+60 600 is the most metal-rich star ([Fe/H]=+0.35 dex), while for HD 166991 we obtained the lowest iron abundance ([Fe/H]=$-0.53$ dex). We also computed the so-called [Ref] index for 25 of our solar analogues, and we found, that BD+60 600 ([Ref]=+0.42) and BD+28 3198 ([Ref]=+0.34) are good targets for exoplanet search.
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ROBUST-WT: Robust Uncertainty-aware Segmentation Transform via Whitening and Training Enhancements
Training tweaks (augmentations, hybrid loss, scheduling, ablation flags) raise optic disc Dice from 0.939 (baseline epoch 5) to 0.956 (final epoch) on a fundus benchmark.