HD 100357 is an Ap Si/He-wk star with strong silicon, iron-peak and rare-earth overabundances, helium deficiency, and Doppler maps revealing ring-shaped Fe and Cr depletions that may trace an unseen magnetic field.
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Chemical abundances and doppler imaging of the Ap Si/He-wk star HD 100357
HD 100357 is an Ap Si/He-wk star with strong silicon, iron-peak and rare-earth overabundances, helium deficiency, and Doppler maps revealing ring-shaped Fe and Cr depletions that may trace an unseen magnetic field.