417 citations · 2.6k across the 34 of their papers we have counts for
34 papers
Self-Supervised Pretraining on Satellite Imagery: a Case Study on Label-Efficient Vehicle Detection
Jules BOURCIER, Thomas Floquet, Gohar Dashyan +3
In defense-related remote sensing applications, such as vehicle detection on satellite imagery, supervised learning requires a huge number of labeled examples to reach operational…
Ensemble Learning techniques for object detection in high-resolution satellite images
Arthur Vilhelm, Matthieu Limbert, Clément Audebert +1
Ensembling is a method that aims to maximize the detection performance by fusing individual detectors. While rarely mentioned in deep-learning articles applied to remote sensing, e…
Case-based reasoning for rare events prediction on strategic sites
Vincent Vidal, Marie-Caroline Corbineau, Tugdual Ceillier
Satellite imagery is now widely used in the defense sector for monitoring locations of interest. Although the increasing amount of data enables pattern identification and therefore…
Improving performance of aircraft detection in satellite imagery while limiting the labelling effort: Hybrid active learning
Julie Imbert, Gohar Dashyan, Alex Goupilleau +2
The earth observation industry provides satellite imagery with high spatial resolution and short revisit time. To allow efficient operational employment of these images, automating…
Neural Architecture Search in operational context: a remote sensing case-study
Anthony Cazasnoves, Pierre-Antoine Ganaye, Kévin Sanchis +1
Deep learning has become in recent years a cornerstone tool fueling key innovations in the industry, such as autonomous driving. To attain good performances, the neural network arc…
Active learning for object detection in high-resolution satellite images
Alex Goupilleau, Tugdual Ceillier, Marie-Caroline Corbineau
In machine learning, the term active learning regroups techniques that aim at selecting the most useful data to label from a large pool of unlabelled examples. While supervised dee…
Concurrent Segmentation and Object Detection CNNs for Aircraft Detection and Identification in Satellite Images
Damien Grosgeorge, Maxime Arbelot, Alex Goupilleau +2
Detecting and identifying objects in satellite images is a very challenging task: objects of interest are often very small and features can be difficult to recognize even using ver…
Seismic probing of the first dredge-up event through the eccentric red-giant & red-giant spectroscopic binary KIC9163796
P. G. Beck, T. Kallinger, K. Pavlovski +10
Binaries in double-lined spectroscopic systems provide a homogeneous set of stars. Differences of parameters, such as age or initial conditions, which otherwise would have strong i…
Surface rotation of Kepler red giant stars
T. Ceillier, J. Tayar, S. Mathur +7
Kepler allows the measurement of starspot variability in a large sample of field red giants for the first time. With a new method that combines autocorrelation and wavelet decompos…
Constraining the efficiency of angular momentum transport with asteroseismology of red giants: the effect of stellar mass
P. Eggenberger, N. Lagarde, A. Miglio +12
Context: Constraints on the internal rotation of red giants are now available thanks to asteroseismic observations. Preliminary comparisons with rotating stellar models indicate th…
Constraining stellar physics from red-giant stars in binaries - stellar rotation, mixing processes and stellar activity
P. G. Beck, T. Kallinger, K. Pavlovski +10
The unparalleled photometric data obtained by NASA's Kepler Space Telescope has led to an improved understanding of stellar structure and evolution - in particular for solar-like o…
Photospheric and chromospheric magnetic activity of seismic solar analogs. Observational inputs on the solar/stellar connection from Kepler and Hermes
D. Salabert, R. A. Garcia, P. G. Beck +8
We identify a set of 18 solar analogs among the seismic sample of solar-like stars observed by the Kepler satellite rotating between 10 and 40 days. This set is constructed using t…
Magnetic variability in the young solar analog KIC 10644253: Observations from the Kepler satellite and the HERMES spectrograph
D. Salabert, C. Regulo, R. A. Garcia +12
The continuous photometric observations collected by the Kepler satellite over 4 years provide a whelm of data with an unequalled quantity and quality for the study of stellar evol…
Weakened magnetic braking as the origin of anomalously rapid rotation in old field stars
Jennifer L. van Saders, Tugdual Ceillier, Travis S. Metcalfe +5
A knowledge of stellar ages is crucial for our understanding of many astrophysical phenomena, and yet ages can be difficult to determine. As they become older, stars lose mass and…
Rotation periods and seismic ages of KOIs - comparison with stars without detected planets from Kepler observations
T. Ceillier, J. van Saders, R. A. Garcia +7
One of the most difficult properties to derive for stars is their age. For cool main-sequence stars, gyrochronology relations can be used to infer stellar ages from measured rotati…
Nearly-uniform internal rotation of solar-like main-sequence stars revealed by space-based asteroseismology and spectroscopic measurements
O. Benomar, M. Takata, H. Shibahashi +2
The rotation rates in the deep interior and at the surface of 22 main-sequence stars with masses between and are constrained by combining asteroseismol…
Rapid Rotation of Low-Mass Red Giants Using APOKASC: A Measure of Interaction Rates on the Post-main-sequence
Jamie Tayar, Tugdual Ceillier, D. A. García-Hernández +16
We investigate the occurrence rate of rapidly rotating (10 km s), low-mass giant stars in the APOGEE-Kepler (APOKASC) fields with asteroseismic mass and surface…
Testing the recovery of stellar rotation signals from Kepler light curves using a blind hare-and-hounds exercise
S. Aigrain, J. Llama, T. Ceillier +10
We present the results of a blind exercise to test the recoverability of stellar rotation and differential rotation in Kepler light curves. The simulated light curves lasted 1000 d…
Young alpha-enriched giant stars in the solar neighbourhood
Marie Martig, Hans-Walter Rix, Victor Silva Aguirre +31
We derive age constraints for 1639 red giants in the APOKASC sample for which seismic parameters from Kepler, as well as effective temperatures, metallicities and [alpha/Fe] values…
Asteroseismic inference on rotation, gyrochronology and planetary system dynamics of 16 Cygni
G. R. Davies, W. J. Chaplin, W. M. Farr +13
The solar analogs 16 Cyg A and 16 Cyg B are excellent asteroseismic targets in the \Kepler field of view and together with a red dwarf and a Jovian planet form an interesting syste…
Extracting surface rotation periods of solar-like Kepler targets
T. Ceillier, R. A. Garcia, D. Salabert +1
We use various method to extract surface rotation periods of Kepler targets exhibiting solar-like oscillations and compare their results.
Surface rotation of solar-like oscillating stars
T. Ceillier, R. A. Garcia, D. Salabert +1
In this work, we use different methods to extract the surface rotation rate of Kepler targets showing solar-like oscillations.
Rotation periods and ages of solar analogs and solar twins revealed by the Kepler Mission
J. -D. do Nascimento, R. A. Garcia, S. Mathur +7
A new sample of solar analogs and twin candidates have been constructed and studied, with particular attention to their light curves from NASA's Kepler mission. This letter aims to…
Impact on asteroseismic analyses of regular gaps in Kepler data
R. A. Garcıa, S. Mathur, S. Pires +11
The NASA Kepler mission has observed more than 190,000 stars in the constellations of Cygnus and Lyra. Around 4 years of almost continuous ultra high-precision photometry have been…