A5034973948- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Gamma-ray bursts and supernovae
- Astronomical Observations and Instrumentation
- Geophysics and Gravity Measurements
- Solar and Space Plasma Dynamics
- Astro and Planetary Science
- SAS software applications and methods
- Statistical and numerical algorithms
- Oceanographic and Atmospheric Processes
- Planetary Science and Exploration
- Adaptive optics and wavefront sensing
- CCD and CMOS Imaging Sensors
- Atmospheric Ozone and Climate
KU Leuven
2021-2023
Nordic Optical Telescope
2019-2023
Institute of Astronomy
2021-2023
Aarhus University
2019
With the PLAnetary Transits and Oscillation of stars (PLATO) space mission set for launch in December 2026 by European Space Agency (ESA), a new photometric legacy future scientific discoveries await community. By exploring topics outside core science program, PLATO complementary program (PLATO-CS) provides unique opportunity to maximise yield mission. In this work, we investigate PLATO’s potential observing pulsating across Hertzsprung--Russell diagram (HRD). This search is distinct from...
To prepare for the analyses of future PLATO light curves, we develop a deep learning model to detect transits in high precision photometric curves. Since PLATO's main objective is detection temperate Earth-sized planets around solar-type stars, code designed individual transit events. The filtering step, required by conventional methods, can affect transit, which could be an issue long and shallow transits. protect shape depth, also work on unfiltered based Unet family architecture, but it...
Context. PLAnetary Transits and Oscillations of stars (PLATO) is the ESA M3 space mission dedicated to detect characterise transiting exoplanets including information from asteroseismic properties their stellar hosts. The uninterrupted high-precision photometry provided by space-borne instruments such as PLATO require long preparatory phases. An exhaustive list tests are paramount design a that meets performance requirements and, such, simulations an indispensable tool in preparation. Aims....
Abstract (155140) 2005 UD has a similar orbit to (3200) Phaethon, an active asteroid in highly eccentric thought be the source of Geminid meteor shower. Evidence points genetic relationship between these two objects, but we have yet fully understand how and Phaethon could separated into this associated pair. Presented herein are new observations from five observatories that were carried out during 2018, 2019, 2021 apparitions. We implemented light curve inversion using our data, as well...
By combining ground-based spectrographic observations of variability in the chromospheric emission from Sun-like stars with seen their eigenmode frequencies, it is possible to relate changes observed at surfaces these taking place interior. further comparing this relative flux stars, one can obtain an expression for how activity indicators energy output stars. Such studies become very pertinent when be related stellar cycles as they then used improve our understanding solar cycle and its...
Altough both components of the bright eclipsing binary $\alpha$ Dra having been resolved using long baseline interferometry and secondary component shown to contribute some 15\% total flux, a spectroscopic detection companion star was so far unsuccessful. To achieve our goals, we use combined data set from with Navy Precision Optical Interferometer (NPOI), photometry TESS space observatory, high-resolution spectroscopy HERMES fibre-fed spectrograph at La Palma observatory. We method spectral...
To prepare for the analyses of future PLATO light curves, we develop a deep learning model, Panopticon, to detect transits in high precision photometric curves. Since PLATO's main objective is detection temperate Earth-size planets around solar-type stars, code designed individual transit events. The filtering step, required by conventional methods, can affect transit, which could be an issue long and shallow transits. protect shape depth, also work on unfiltered We trained model set...
Context . The PLAnetary Transits and Oscillations of stars (PLATO) mission will observe the same area sky continuously for at least two years in an effort to detect transit signals Earth-like planet orbiting a solar-like star. Aims We aim study how short-term variability caused by oscillations granulation would affect PLATO’s ability size Earth if PLATO were Solar System itself. also compare different approaches mitigate noise perform realistic fitting PLATO-like light curves. Methods...
Context. The PLAnetary Transits and Oscillations of stars (PLATO) mission will observe the same area sky continuously for at least two years in an effort to detect transit signals Earth-like planet orbiting a solar-like star. Aims. We aim study how short-term variability caused by oscillations granulation would affect PLATO's ability size Earth if PLATO were Solar System itself. Methods. injected onto real solar data taken Helioseismic Magnetic Imager (HMI) instrument. isolated stellar...
With ESA's PLATO space mission set for launch in December 2026, a new photometric legacy and future of scientific discoveries await. In this work we investigate PLATO's potential observing pulsating stars across the Hertzsprung-Russell diagram as part Complimentary Science program (PLATO-CS). Specifically, mock asteroseismic catalogue (MOCKA) intermediate to massive is presented benchmark highlight yield PLATO-CS quantitative way. MOCKA includes simulations $\beta$~Cephei, slowly B (SPB),...
(155140) 2005 UD has a similar orbit to (3200) Phaethon, an active asteroid in highly eccentric thought be the source of Geminid meteor shower. Evidence points genetic relationship between these two objects, but we have yet fully understand how and Phaethon could separated into this associated pair. Presented herein are new observations from five observatories that were carried out during 2018, 2019, 2021 apparitions. We implemented light curve inversion using our data, as well dense sparse...
PLAnetary Transits and Oscillations of stars (PLATO) is the ESA M3 space mission dedicated to detect characterise transiting exoplanets including information from asteroseismic properties their stellar hosts. The uninterrupted high-precision photometry provided by space-borne instruments such as PLATO require long preparatory phases. An exhaustive list tests are paramount design a that meets performance requirements, such, simulations an indispensable tool in preparation. To accommodate...