Differential photometry of the delta Scuti stars HR 151 and HR 239.
Abstract
Differential two-colour photometry of the δ Sct stars HR 151 (HD 3326) and HR 239 (HD 4849) has led to a confirmation of the variability of HR 151 and a refinement of the period of HR 239. In addition, constraints on the radial overtone, k, and the spherical harmonic order, l, were determined for HR 239. Both these stars are of particular interest as they have been considered to be possible Ap stars. If so, they may be the only two Ap stars that consistently show δ Sct variability, the case for the Ap classification of HR 151 being the stronger one.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- October 1985
- DOI:
- 10.1093/mnras/216.4.1017
- Bibcode:
- 1985MNRAS.216.1017K
- Keywords:
-
- Peculiar Stars;
- Stellar Spectrophotometry;
- Variable Stars;
- A Stars;
- Amplitudes;
- Electrophotometry;
- Periodic Variations;
- Astrophysics