Abstract
The hot γ Doradus stars have multiple low frequencies characteristicof γ Dor or SPB variables, but are located between the red edge of the SPB and the blue edge of the γ Dor instability strips where all low-frequency modes are stable in current models of these stars. Though δ Sct stars also have low frequencies, there is no sign of high frequencies in hot γ Dor stars. We obtained spectra to refine the locations of some of these stars in the H-R diagram and conclude that these are, indeed, anomalous pulsating stars. The Maia variables have multiple high frequencies characteristic of β Cep and δ Sct stars, but lie between the red edge of the β Cep and the blue edge of the δ Sct instability strips. We compile a list of all Maia candidates and obtain spectra of two of these stars. Again, it seems likely that these are anomalous pulsating stars which are currently not understood.
Original language | English |
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Pages (from-to) | 1318-1327 |
Number of pages | 10 |
Journal | Monthly Notices of the Royal Astronomical Society |
Volume | 460 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1 Aug 2016 |
Keywords
- Stars: oscillations
- Stars: variables: general
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science