New variable stars in open clusters I. Methods and results for 20 open clusters
- Author(s)
- Ernst Paunzen, Konstanze Zwintz, Hans Michael Maitzen, Olga Pintado, Monika Rode-Paunzen
- Abstract
We present high precision CCD photometry of 1791 objects in 20 open clusters with an age of 10 Myrto 1 Gyr. These observations were performed within the ?a photometric system which is primarily used to detect chemically peculiar stars of the upper main sequence. Time bases range from 30 min up to 60 days with data from several nights. We describe the time series analysis reaching a detection limit of down to 0.006 mag for apparent variability. In total, we have detected 35 variable objects of which four are not members of their corresponding clusters. The variables cover the entire Hertzsprung-Russell diagram, hence they are interesting targets for follow-up observations.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- Universidad Nacional de Tucumán
- Journal
- Astronomy & Astrophysics
- Volume
- 418
- Pages
- 99-102
- No. of pages
- 4
- ISSN
- 0004-6361
- Publication date
- 2004
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103003 Astronomy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/9baaed10-e5e5-40de-b178-ab85dc7326cb