Title: The delta Scuti star FG Vir. - V. The 2002 photometric multisite campaign
Authors: Breger, M ×
Rodler, F
Pretorius, ML
Martin-Ruiz, S
Amado, PJ
Costa, V
Garrido, R
de Coca, PL
Olivares, I
Rodriguez, E
Rolland, A
Tshenye, T
Handler, G
Poretti, E
Sareyan, JP
Alvarez, M
Kilmartin, PM
Zima, Wolfgang #
Issue Date: May-2004
Publisher: Springer-Verlag
Series Title: Astronomy & Astrophysics vol:419 issue:2 pages:695-701
Abstract: A high-accuracy multisite campaign was caffied out from 2002 January to May with a photometric coverage of 398 h at five observatories. The concentration on a few selected sites gives better consistency and accuracy than collecting smaller amounts from a larger number of sites. 23 frequencies were detected with a high statistical significance. 6 of these are new. The 17 frequencies found in common with the 1992-1995 data are the modes with highest amplitudes. This indicates that the pulsation spectrum of FG Vir is relatively stable over the ten-year period. Two frequencies have variable amplitudes and phases from year to year as well as during 2002. These were both found to be double modes with close frequencies. For the mode at 12.15 c/d this leads to an apparent modulation with a time scale of similar to129 d. The close frequencies at 12.15 c/d are composed of a radial and a nonradial mode, suggesting a similarity with the Blazhko Effect seen in RR Lyrae stars.
ISSN: 0004-6361
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Institute of Astronomy
× corresponding author
# (joint) last author

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