Properties of He - rich stars
نویسنده
چکیده
We present an abundance analysis of light elements in the most massive chemically peculiar (CP) stars, He-rich stars. The analysis is based on both low and high-resolution observations collected at ESO, La Silla, Chile in the optical region and includes 6 standard and 21 He-rich stars. Light element abundances display a diverse pattern from under-solar up to above-solar values. Carbon is found underabundant in the hottest He-rich stars and normal in the coolest ones, according to the LTE model predictions. The distribution of projected rotational velocities shows a significant excess of slow rotators, no He-rich stars having v sin i > 130 km s−1.
منابع مشابه
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