| Hd 62454 And Hd 68192 : Two New (2007) | |||||||||||||
Abstract | |||||||||||||
| We present multilongitude, multicolor photometry and simultaneous high-resolution, high signal-tonoise spectroscopy of the newly discovered c Doradus variables HD 62454 and HD 68192. From combined Johnson and data, we are able to identify ve independent periods in HD 62454 and Stro # mgren two stable periods in HD 68192. The data presented are sufficient to rule out all physically meaningful types of variations, with the one exception of the high-order, low-degree, nonradial gravity-mode pulsations that are believed to be at work in c Doradus stars. We also nd that HD 62454 is a double-lined spectroscopic binary and we present an orbital solution. Key words : stars : oscillations stars : variables : other 1. INTRODUCTION The search for constant comparison stars has been one of the quests of photometrists since the introduction of astronomical photometry in the early part of the 20th century. As we strive to measure stellar variability of smaller and smaller amplitudes, the con... | |||||||||||||
Publication details | |||||||||||||
| |||||||||||||