10 New γ Doradus and δ Scuti Stars
Open Access
- 1 December 2001
- journal article
- research article
- Published by American Astronomical Society in The Astronomical Journal
- Vol. 122 (6) , 3383-3395
- https://doi.org/10.1086/324228
Abstract
We present high-resolution spectroscopy and precision photometry of five new γ Doradus and five new δ Scuti variables. The five new γ Doradus variables substantially increase the number of confirmed stars of this class. All 10 stars fall in the spectral class range F0–F2, but they are cleanly separated into two groups by their luminosity and photometric periods. However, the period gap between the γ Doradus and δ Scuti stars is becoming very narrow since we confirm that HD 155154 is a γ Doradus star with the shortest periods reported to date (the shortest of its four periods is ~0.312 days). We do not find any evidence in our sample for stars exhibiting both δ Scuti– and γ Doradus–type pulsations.Keywords
This publication has 32 references indexed in Scilit:
- A Spectroscopic Analysis of the γ Doradus Star HD 207223 = HR 8330The Astrophysical Journal, 2001
- The Scuti star 38 o1 EriMonthly Notices of the Royal Astronomical Society, 2000
- Asteroseismology of Delta Scuti starsOpen Astronomy, 2000
- The Relation between Rotational Velocities and Spectral Peculiarities among A-Type StarsThe Astrophysical Journal Supplement Series, 1995
- A study of short-period RS Canum Venaticorum and W Ursae Majoris binary systems - The global nature of H-alphaThe Astrophysical Journal, 1985
- Visual multiples. VII - MK classificationsThe Astrophysical Journal Supplement Series, 1981
- MK spectral types for some F and G stars.Publications of the Astronomical Society of the Pacific, 1979
- Delta Scuti and related starsPublications of the Astronomical Society of the Pacific, 1979
- Spectral classification of the bright F stars.Publications of the Astronomical Society of the Pacific, 1976
- Short-Period Variability of b, a, and F Stars. III. a Survey of Delta Scuti Variable StarsThe Astrophysical Journal Supplement Series, 1969