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High-precision Near-infrared Abundances of Solar Analogs in the YJ Bands

  • Authors: Noriyuki Matsunaga, Takuji Tsujimoto, Daisuke Taniguchi, Hiroaki Sameshima, Shogo Otsubo, Tomomi Takeuchi, Yuki Sarugaku, Ilaria Petralia, Scarlet Elgueta, Matilde Coello-Guzmán, Kei Fukue, Yuji Ikeda, Hideyo Kawakita, Valentina D'Orazi, Giuseppe Bono

Noriyuki Matsunaga et al 2026 The Astrophysical Journal Supplement Series 284 .

  • Provider: AAS Journals

Caption: Figure 3.

Bootstrap test using Fe I VALD combined curves for solar-analog stars. Gray and orange lines show, respectively, for individual calibrators (ages 3–7 Gyr) and noncalibrators, the robust σ([Fe/H]) and median half-width vs. subset size M; blue curves show the median over all stars; red curves are ﹩\alpha /\sqrt{M}﹩ fits. Both metrics decline approximately as expected from statistical averaging.

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