Mathieu Clerté
A5069017848- Stellar, planetary, and galactic studies
- Astro and Planetary Science
- Astronomy and Astrophysical Research
- Astrophysics and Star Formation Studies
- Astronomical Observations and Instrumentation
- Gamma-ray bursts and supernovae
University of Southern Queensland
2019-2023
We report the discovery of a warm sub-Saturn, TOI-257b (HD 19916b), based on data from NASA's Transiting Exoplanet Survey Satellite (TESS). The transit signal was detected by TESS and confirmed to be planetary origin radial velocity observations. An analysis photometry, Minerva-Australis, FEROS, HARPS velocities, asteroseismic stellar oscillations reveals that has mass $M_P=0.138\pm0.023$\,$\rm{M_J}$ ($43.9\pm7.3$\,$M_{\rm \oplus}$), radius $R_P=0.639\pm0.013$\,$\rm{R_J}$...
The Minerva-Australis telescope array is a facility dedicated to the follow-up, confirmation, characterization, and mass measurement of planets orbiting bright stars discovered by Transiting Exoplanet Survey Satellite (TESS)—a category in which it almost unique Southern Hemisphere. It located at University Queensland's Mount Kent Observatory near Toowoomba, Australia. Its flexible design enables multiple 0.7 m robotic telescopes be used both combination, independently, for high-resolution...
An unprecedented number of exoplanets are being discovered by the Transiting Exoplanet Survey Satellite (TESS). Determining orbital parameters these exoplanets, and especially their mass radius, will depend heavily upon measured physical characteristics host stars. We have cross-matched spectroscopic, photometric, astrometric data from GALAH Data Release 2, TESS Input Catalog Gaia to create a curated, self-consistent catalog chemical properties for 47,285 Using we derived isochrone masses...
ABSTRACT Short-orbit gas giant planet formation/evolution mechanisms are still not well understood. One promising pathway to discriminate between is constrain the occurrence rate of these peculiar exoplanets at earliest stage system’s life. However, a major limitation when studying newly born stars stellar activity. This cocktail phenomena triggered by fast rotation, strong magnetic fields, and complex internal dynamics, especially present in very young stars, compromises our ability detect...
Pioneering photometric, astrometric, and spectroscopic surveys are helping exoplanetary scientists better constrain the fundamental properties of stars within our galaxy, planets these host. In this study, we use third data release from stellar GALAH Survey, coupled with astrometric eDR3 \textit{Gaia} satellite, other NASA's Exoplanet Archive, to refine understanding 279 confirmed candidate exoplanet host their exoplanets. This homogenously analysed set comprises 105 exoplanets, along 146 K2...
Abstract NASA’s Transiting Exoplanet Survey Satellite (TESS) mission has been uncovering a growing number of exoplanets orbiting nearby, bright stars. Most that have discovered by TESS orbit narrow-line, slow-rotating stars, facilitating the confirmation and mass determination these worlds. We present discovery hot Jupiter rapidly rotating ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mi>v</mml:mi> <mml:mi>sin</mml:mi> <mml:mspace width="0.50em"/> <mml:mo...
NASA's Transiting Exoplanet Survey Satellite (TESS) mission, has been uncovering a growing number of exoplanets orbiting nearby, bright stars. Most that have discovered by TESS orbit narrow-line, slow-rotating stars, facilitating the confirmation and mass determination these worlds. We present discovery hot Jupiter rapidly rotating ($v\sin{(i)}= 35.1\pm1.0$km/s) early F3V-dwarf, HD115447 (TOI-778). The transit signal taken from Sectors 10 37 TESS's initial detection exoplanet is combined...
Short-orbit gas giant planet formation/evolution mechanisms are still not well understood. One promising pathway to discriminate between is constrain the occurrence rate of these peculiar exoplanets at earliest stage system's life. However, a major limitation when studying newly born stars stellar activity. This cocktail phenomena triggered by fast rotation, strong magnetic fields and complex internal dynamics, especially present in very young stars, compromises our ability detect...