New beta Cephei and SPB Stars Discovered in Hipparcos Photometry

Abstract

We discuss 34 stars for which we detected new frequencies in Hipparcos Hp magnitudes. 13 of these stars are variables discovered in this paper. For 20 stars, we derive log T_eff and log g from Stromgren or Geneva photometry.

We classify one new beta Cep star, HIP 88352, two new beta Cep suspects, HIP 54753 and 88123, four new SPBs, HIP 1030, 39206, 46192 and 111147, and two SPB suspects, HIP 75787 and 98778. We find the last star to be triply-periodic and we show that the frequencies detected in Hp magnitudes are present in the photoelectric observations of Hill etal (1976).

Finally, we discover the hottest variable of the SPB type, namely, HIP 1030.