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We present the results of a comprehensive study of the chemically peculiarstars HD 5797 and HD 40711. The stars have the same effective temperature, Teff= 8900 K, and a similar chemical composition with large iron (+1.5 dex) andchromium (+3 dex) overabundances compared to the Sun. The overabundance ofrare-earth elements typically reaches +3 dex. We have measured the magneticfield of HD 5797. The longitudinal field component Be has been found to varysinusoidally between -100 and +1000 G with a period of 69 days. Our estimate ofthe evolutionary status of the stars suggests that HD 5797 and HD 40711, oldobjects with an age t \approx 5 \times 108 yr, are near the end of the corehydrogen burning phase.

Comprehensive study of the magnetic stars HD 5797 and HD 40711 with large chromium and iron overabundances