2k citations · 2.8k across the 21 of their papers we have counts for
10 papers · 1 filter
Study of the variable star ASASSN-V j104912.47+274312.7; a rare peculiar RRc star
M. Correa, J. M. Vilalta, J. F. Le Borgne
During a screening in ASAS-SN database searching candidates of Delta Scuti stars with short period, our attention was drawn to the variable star ASASSN-V J104912.47+274312.7, we co…
The magnificent past of RR Lyrae variables
Ennio Poretti, Jean-Francois Le Borgne, Alain Klotz +2
The history of the observations of RR Lyr variables started in the XIXth century, more than 120 years ago. The very long time baseline of available data combined with the short per…
CoRoT space photometry of seven Cepheids
Ennio Poretti, Jean-Francois Le Borgne, Monica Rainer +4
A few Galactic classical Cepheids were observed in the programmes of space missions as Coriolis, MOST and Kepler. An appealing opportunity was to detect additional nonradial modes,…
The star RR Lyr and the Cepheid variables in the era of the space photometry revolution
Ennio Poretti, Jean-Francois Le Borgne, Alain Klotz
The long-term behaviours of the pulsation and Blazhko periods of RR Lyr are investigated by means of Kepler and ground-based observations. The difficulties in detecting additional…
The space photometry revolution and our understanding of RR Lyrae stars
R. Szabó, J. M. Benkő, M. Paparó +7
The study of RR Lyrae stars has recently been invigorated thanks to the long, uninterrupted, ultra-precise time series data provided by the Kepler and CoRoT space telescopes. We gi…
GEOS RR Lyr survey: FM Del is indeed a cepheid
Jean-Francois Le Borgne, Alain Klotz
Though FM Del has been considered as a RR Lyr star by Preston et al. in 1959 (following discovery by Huth, 1957), Huth (1960) eventually changed his mind by showing that it is in f…
The historical vanishing of the Blazhko effect of RR Lyr from GEOS and Kepler surveys
J. F. Le Borgne, E. Poretti, A. Klotz +20
RR Lyr is one of the most studied variable stars. Its light curve has been regularly monitored since the discovery of the periodic variability in 1899. Analysis of all observed max…
The all-sky GEOS RR Lyr survey with the TAROT telescopes. Analysis of the Blazhko effect
J. -F. Le Borgne, A. Klotz, E. Poretti +9
We used the GEOS database to study the Blazhko effect of galactic RRab stars. The database is continuously enriched by maxima supplied by amateur astronomers and by a dedicated sur…
Evolutionary changes in the periods of galactic RRab stars
Jacqueline Vandenbroere, Ennio Poretti, Jean-Francois Le Borgne
Le Borgne et al. (2007) report on the determination of evolutionary changes in the periods of field RR Lyr stars. Thanks to the extension of the GEOS database, we could analyze a s…
CoRoT light curves of RR Lyrae stars. CoRoT 101128793: long-term changes in the Blazhko effect and excitation of additional modes
Ennio Poretti, Margit Paparo, Magali Deleuil +13
The CoRoT (Convection, Rotation and planetary Transits) space mission provides a valuable opportunity to monitor stars with uninterrupted time sampling for up to 150 days at a time…