In addition to its own publications, GEOS occasionally shares its results in external journals. Below you can find a non-exhaustive list of these publications.
External Journals
The elusive chase for the first RR Lyr star in a binary system: the case of KIC 2831097
E. Poretti, J. F. Le Borgne, M. Correa, Á. Sódor, M. Rainer, M. Audejean, E. Denoux, N. Esseiva, J. Fainè, F. Fumagalli, R. Navès and A. Klotz
Astronomy and Astrophysics, 703, A286 (2025)
Historical vanishing of the Blazhko effect of RR Lyr from the GEOS and Kepler surveys
J. F. Le Borgne, E. Poretti, A. Klotz, E. Denoux, H. A. Smith, K. Kolenberg, R. Szabó, S. Bryson, M. Audejean, C. Buil, J. Caron, E. Conseil, L. Corp, C. Drillaud, T. de France, K. Graham, K. Hirosawa, A. N. Klotz, F. Kugel, D. Loughney, K. Menzies, M. Rodríguez and P. M. Ruscitti
Monthly Notices of the Royal Astronomical Society, 441, 1435–1443 (2014)
THE ALL-SKY GEOS RR Lyr SURVEY WITH THE TAROT TELESCOPES: ANALYSIS OF THE BLAZHKO EFFECT
J.F. Le Borgne, A. Klotz, E. Poretti, M. Boër, N. Butterworth, M. Dumont, S. Dvorak, F.-J. Hambsch, F. Hund, F. Kugel, J. Vandenbroere and J. M. Vilalta
The Astronomical Journal, 144, 39 (2012)
Maxima of RR Lyr stars from AAVSO International Database
J.F. Le Borgne, J. Vandenbroere, A.A. Henden, N. Butterworth, S. Dvorak
IBVS 5854 (2008)
Stellar evolution through the ages: period variations in galactic RRab stars as derived from the GEOS database and TAROT telescopes
J.F. Le Borgne, A. Paschke, J. Vandenbroere, E. Poretti, A. Klotz, M. Boër, Y. Damerdji, M. Martignoni and F. Acerbi
Astronomy and Astrophysics, 476, 307–316 (2007)
The Contribution of GEOS to the Study of Stellar Pulsations
R. Boninsegna, J. Vandenbroere, J.F. Le Borgne and the GEOS team
International Astronomical Union Colloquium, 185, 166-167 (2002)
NSV 12223: a New W UMa Eclipsing Binary
J. Vandenbroere, A. Pigulski, P. Van Cauteren
IBVS 5207 (2001)
NSV 1012: a New Eclipsing Binary
T. Berthold, J.P. Verrot, J. Vandenbroere, M. Martignoni, P. Kroll
IBVS 5171 (2001)
UZ CVn: a Century of Period Increase
J. Vandenbroere, T. Berthold
IBVS 5170 (2001)
NSV 5904: a New W UMa Eclipsing Binary
J. Vandenbroere, M. Martignoni, J.P. Verrot, F. Acerbi
IBVS 5021 (2001)
LO Gem: First Determination of the Orbital Period and Light Curve
J. Vandenbroere, N. Beltraminelli, F. Acerbi
IBVS 5020 (2001)
NSV 223: a New Eclipsing Binary
J.P. Verrot, P. Van Cauteren
IBVS 4910 (2000)
NSV 5028: a new RR Lyrae type variable in UMa
J. Vandenbroere, B. Paris, J.P. Verrot
IBVS 4815 (1999)
NSV 13826: a beta Lyrae Type Eclipsing Binary
J. Vandenbroere
IBVS 4726 (1999)
B AND V PHOTOELECTRIC LIGHT CURVES AND FIRST EPHEMERIS OF NSV 11321, A NEW W UMa SYSTEM
N. Beltraminelli, D. Dalmazio, J. Remis, A. Manna
IBVS 4696 (1999)
Monitoring the activity of the Be star OT Geminorum
A. Arellano Ferro, J.P. Sareyan, J.J. Avila, F. González, M. Dumont and GEOS [CHC, MAA, EYR, VRR, FDZ, KCH, MIS, PAR, BSQ, PMP, SCP]
Astron. Astrophys. Suppl. Ser. 127, 455-461 (1998)
BI CVn: a study of its period and a new photoelectric light curve
J. Vandenbroere
IBVS 4554 (1998)
XZ Lac = NSV14114
M. Martignoni
IBVS 4385 (1996)
NEW INFORMATION ON V558 Cas: TYPE AND PERIOD
J. Vandenbroere
IBVS 4320 (1996)
NSV 4219 UMa: AN RR Lyr VARIABLE
J. Vandenbroere
IBVS 4241 (1995)
PHOTOELECTRIC OBSERVATIONS OF THE ECLIPSING VARIABLE DO Cas
M. Aluigi, G. Galli, A. Gaspani
IBVS 4153 (1995)
Photoelectric Observations of the Close Eclipsing Binary VW Cephei
M. Aluigi, G. Galli, A. Gaspani
IBVS 4117 (1994)
HIC 83921: A NEW PULSATING STAR IN HERCULES
M. Aluigi, G. Galli, A. Gaspani
IBVS 4064 (1994)
NSV 7457 Her: A PROBABLE W UMa STAR
J. Vandenbroere
IBVS 3946 (1993)
BD +16d2766 IS NOT AN EW-TYPE STAR
O. Walas, M. Dumont, J. Remis
IBVS 3916 (1993)
B AND V PHOTOMETRY AND THE EPHEMERIS OF THE W UMa TYPE STAR RS SERPENTIS
O. Walas, M. Dumont, J. Remis
IBVS 3758 (1992)
BV LIGHT CURVES AND THE FIRST EPHEMERIS FOR THE ECLIPSING BINARY STAR NSV 1776
G. Boistel, R. Boninsegna, M. Dumont
IBVS 3544 (1990)
FIRST SYNTHETIC SOLUTION FOR THE W UMa SYSTEM PP Lac
A. Gaspani
IBVS 3534 (1990)
Results of GEOS Observing Programs
R. Boninsegna
J. AAVSO, 19, 126-132 (1990)
The Groupe Europeen D’Observations Stellaires
M. Dumont
J. AAVSO, 19, 125 (1990)
FIRST BV LIGHT CURVE FOR THE ECLIPSING BINARY PP LACERTAE
M. Dumont, A. Maraziti
IBVS 3478 (1990)
V378 Per: Forts O-C observées en 1989
G. Boistel
SAF Observations et Travaux, 22, 57-58 (1990)
V394 Her: Une RR Lyrae sous-observée
G. Boistel
SAF Observations et Travaux, 20, 25-27 (1989)
ON THE MISCLASSIFICATION OF CK AQUARII
J.F. Le Borgne, E. Poretti, A. Figer
IBVS 3316 (1989)
PX Cep: A NEW LARGE AMPLITUDE ECLIPSING BINARY
R. Boninsegna
IBVS 3048 (1987)
A method for the analysis of long series of visual observations of red, small amplitude variable stars
Ph. Ralincourt, E. Poretti and G. Boistel
Astrophysics and Space Science, 134, 135–143, (1987)
FIRST EPHEMERIS FOR THE W UMa-TYPE STAR NSV 12040
R. Boninsegna
IBVS 2966 (1986)
PHOTOMETRIC CONSTANCY OF IS Gem
E. Poretti, F. Fumagalli
IBVS 2770 (1985)
PERIOD AND LIGHT CURVE OF THE W UMa-TYPE STAR NSV 4070
A. Figer, J.F. Le Borgne, M. Dumont
IBVS 2755 (1985)
NO CEPHEID-LIKE VARIABILITY IN SAO 096478 = NSV 03374
E. Poretti, J.F. Le Borgne
IBVS 2719 (1985)
PERIOD AND LIGHT-CURVE OF THE CLOSE ECLIPSING BINARY FZ ORIONIS
J.F. Le Borgne, A. Figer, M. Dumont
IBVS 2566 (1984)
NEW PHOTOMETRIC DATA FOR THE Ap STAR GY And = HD 9996
M. Dumont, J.F. Le Borgne
IBVS 2336 (1983)
NN CEPHEI AND PP LACERTAE
A. Figer, R. Rolland
IBVS 1231 (1977)