A&A Supplement Series, Vol. 125, October II 1997, 343-353
Received January 3; accepted January 6, 1997
Centauri
J. Kaluzny
- M. Kubiak -
M. Szymanski - A. Udalski -
W. Krzeminski
- M. Mateo
Send offprint request: J. Kaluzny
Warsaw University Observatory, Al. Ujazdowskie 4,
00-478 Warsaw, Poland
e-mail: (jka,mk,msz,udalski)@sirius.astrouw.edu.pl
Carnegie Observatories, Las Campanas Observatory, Casilla 601,
La Serena, Chile
e-mail: wojtek@roses.ctio.noao.edu
Department of Astronomy, University of Michigan, 821 Dennison
Bldg., Ann Arbor, MI 48109-1090, U.S.A.
e-mail: mateo@astro.lsa.umich.edu
We present V-band photometry for 141 variable stars from the field
of Cen. All but one variables are either RR Lyr stars
or Pop. II Cepheids. One object is a distant background RR Lyr star
from the galactic halo. The presented sample includes 33 newly
identified variables, mostly low amplitude RR Lyr stars.
We identified also two Pop. II Cepheids with exceptionally
low amplitudes of light variations 
.
The presented data may be used to study period changes
of Cen variables
and/or for Fourier decomposition of light curves.
keywords: globular clusters: individual: NGC 5139 -- stars: variables: RR Lyr -- stars: variables: other