| Issue |
A&A
Volume 390, Number 1, July IV 2002
|
|
|---|---|---|
| Page(s) | 109 - 119 | |
| Section | Galactic structure, stellar clusters, and populations | |
| DOI | https://doi.org/10.1051/0004-6361:20020713 | |
| Published online | 05 July 2002 | |
Rotation of stars in NGC 6134*
A comparison of δ Scuti stars and non-variable stars
1
Institute for Physics and Astronomy, University of Aarhus, Bygn. 520, 8000 Aarhus C, Denmark
2
Institut für Astronomie der Universität Wien, Türkenschanzstrasse 17, 1180 Wien, Austria
Corresponding author: S. Frandsen, srf@ifa.au.dk
Received:
14
February
2002
Accepted:
24
April
2002
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 δ Scuti stars in
NGC 6134 as well as several other non-variable stars
with similar colour temperature in order to investigate
if 
and variability is somehow connected: we
find no such correlation. We also compare the distribution
of of δ 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 and variability to be connected.
We have also used the spectra to carry out an abundance
analysis of the δ Scuti stars in NGC 6134 to confirm the
high metal content of the cluster. We find
![$[{\rm Fe/H}] = +0.38\pm0.05$](/articles/aa/abs/2002/28/aa2364/aa2364_tex_eq4.png)
which is in agreement with the
result obtained from Strömgren photometry.
We also present 
photometry of the cluster, but we find no
chemical peculiar stars based on this index.
Key words: stars: oscillations / stars: variable: δ Scuti / stars: rotation / open clusters and associations: individual: NGC 6134, NGC 3680
© ESO, 2002
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