Abstract
The T35 is a small telescope (14″) equipped with a large format CCD camera installed in the Sierra Nevada Observatory (SNO) in Southern Spain. This telescope will be a useful tool for the detecting and the studying of pulsating stars, particularly, in open clusters. In this paper, we describe the automation process of the T35 and also show some images taken with the new instrumentation.
Highlights
At the beginning, the main motivation for carrying out the T35 project was the search for and the study of pulsational behaviour of variable stars in open clusters
Nine γ Doradus were found amongst the 41 variable stars detected in a sample of 175 members distributed among the 10 open clusters applying two methods based on different statistical tests to classify our light curves
The main outcomes were that the probability of finding γ Doradus stars increases if the sample is restricted to AF-type stars, luminosity class IV-V, and solar-type metallicity (Z = 0.02) and that this probability was not bounded to the age of the cluster but to its metallicity, contradicting the theories published by other authors
Summary
The main motivation for carrying out the T35 project was the search for and the study of pulsational behaviour of variable stars in open clusters. A previous systematic survey in search of γ Doradus variability in different open clusters with different metallicities and ages was performed between the years 1995 and 2000 [1,2,3]. Nine γ Doradus were found amongst the 41 variable stars detected in a sample of 175 members distributed among the 10 open clusters applying two methods based on different statistical tests to classify our light curves. Our results were very fruitful due to the high precision of our uvbyβ measurements, that is, less than two thousands of magnitude, the number of member stars and clusters studied in the sample was small with the addition of entailing an enormous observational effort. We needed a telescope of only modest aperture (30–40 cm) to reach the desired S/N in a reasonable time
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