Normal A0-A1 stars with low v sin i

ROYER, F; GEBRAN, M; MONIER, R.; HILL, G.; GULLIVER, AF; ADELMAN, S.J.; SMALLEY, B; PINTADO, O. I.; REINERS, A.

Putting A Stars into Context: Evolution, Environment, and Related Stars

Publishing house «Pero»

Lugar: Moscu; Año: 2014; p. 265 - 269

Royer et al. [7] studied a sample of A0?A1 stars that did not containany previously known binary or chemically peculiar (CP) star. They showed that thedistribution of the equatorial rotational velocities of the sample is bimodal. We reporthere the preliminary results of the abundance analysis of 47 of those ?normal? A0?A1 main-sequence stars. The selection criterion was v sin i < 65 km s−1. An hierarchicalclassification based on the abundances has supported the identification of new CP stars,while normal composition was confirmed the for ∼40% of the sample. That clean sampleof normal A0?A1 stars with low v sin i was then examined for intrinsically slow rotators.