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Eight new Scuti stars

1999; Oxford University Press; Volume: 309; Issue: 4 Linguagem: Inglês

10.1046/j.1365-8711.1999.02928.x

1365-2966

C. Koen, Ruby van Rooyen, F. van Wyk, F. Marang,

Astronomy and Astrophysical Research

HD 23194, a member of the Pleiades, was found to pulsate with a period of about 30 min. The literature on the star is reviewed, and it is concluded that it may be a marginal Am star in a binary system. HD 95321 is an evolved Am (ρ Puppis) star with a 5.1-h periodicity. Mode identification of its pulsation, based on multicolour photometry, suggests that the oscillation is probably non-radial with l=2. We also report on the discovery of six other new Δ Scuti stars, some of which may be pulsating in gravity modes.