Exploring the ultra-faint dwarf Boötes I using JWST and HST: Metallicity distribution and binaries

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Table 3.

Binary fraction with mass ratio larger than 0.4, total binary fraction, slope of the mass ratio distribution, average iron abundance, and dispersion of Boötes I.

Parameter	Value
⟨[Fe/H]⟩	−2.53 ± 0.05
σ_[Fe/H]	0.41 ± 0.03
$f_{bin}^{q > 0.4}$ $Mathematical equation: $ f_{\mathrm{bin}}^{q > 0.4} $$	0.20 ± 0.02
$f_{bin}^{TOT}$ $Mathematical equation: $ f_{\mathrm{bin}}^{\mathrm{TOT}} $$	0.30 ± 0.03
q slope	−0.30 ± 0.15

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