SIMBAD references

The high resolution and high S/N spectra of a nonvariable hydrogen-deficient carbon star XX Cam were analyzed and the chemical composition derived. The atmospheric parameters of XX Cam are T_eff=7250 K, logg= 0.8 and mean ξ_ t_=5 km/s. The microturbulent velocity is variable with depth in the star's atmosphere. The extreme hydrogen deficiency of XX Cam is confirmed. No lithium is found. The abundances of other light elements are close to the abundances in the majority group of R CrB stars. The abundances of s-process elements are not enhanced.