Rotation of stars in NGC 6134. A comparison of d Scuti stars and non-variable stars
- Author(s)
- M B Rasmussen, H Bruntt, Søren Frandsen, Ernst Paunzen, Hans Michael Maitzen
- Abstract
We present results of spectroscopic observations of selected stars in the southern open cluster NGC 6134. We have determined the rotational velocities of the six known d Scuti stars in NGC 6134 as well as several other non-variable stars with similar colour temperature in order to investigate if v sin i and variability is somehow connected: we find no such correlation. We also compare the distribution of v sin i of d Scuti stars and non-variable stars with four other well-studied open clusters to look for any systematic behaviour, but we find no conclusive evidence for v sin 1 and variability to be connected. We have also used the spectra to carry out an abundance analysis of the d Scuti stars in NGC 6134 to confirm the high metal content of the cluster. We find [Fe/H] = +0.38 ‘ 0.05 which is in agreement with the result obtained from Strošmgren photometry. We also present ?a photometry of the cluster, but we find no chemical peculiar stars based on this index.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- Aarhus University, Copenhagen University Observatory
- Journal
- Astronomy & Astrophysics
- Volume
- 390
- Pages
- 109-119
- No. of pages
- 11
- ISSN
- 0004-6361
- Publication date
- 2002
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103003 Astronomy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/c72e0669-f1c2-4e69-b411-1084c9497b07