We’re back after coffee, and jump right into star-planet interaction with Babatunde Akinsanmi talking to us about the tidal deformation and atmosphere of WASP-12 b.
WASP-12 b is one of the ultra-hot Jupiter orbiting close to the Roche limit, being tidally deformed by the host star.
One can measure the tidal deformation with light curves because the shape affects the shape of the curve.
Also, the phase-curve varies! This is super cool 🥹
They observed WASP-12 b 45 times with #CHEOPS and used #TESS and #Spitzer data to study the phase curve including tidal deformation.
Why is tidal deformation important? If you don’t account for the shape, you’ll overestimate the density of your planet.
The phase curves allow to calculate the Love number which should tell us about the core mass fraction. Sadly not very well constrained, so we need #JWST for that instead. They’ll be doing that for WASP-103 b.
Samuel Yee takes us on a journey on the #TESS grand unified hot jupiter survey.
Hot Jupiters, though my favourites, are intrinsically rare. So statistics is difficult + most hot Jupiters have been detected from the ground which entails that there are differences between observations and “unified” is not a thing.
We continue with David Ehrenreich on the v² Lupi system: a tale of three sub-Neptunian worlds in the evaporation valley.
Close-in sub-Neptune planets experience mass loss, also young ones and it could be the reason for the observed radius value. So there is a high interest in studying cooler longer period sub-Neptunes.
This leads to the synergy of CHEOPS and TESS 🙌🏻 #TESS finds, #CHEOPS follows up. #ExSSV
“This discovery is going to become a benchmark system to study how sub-Neptunes, the most common type of planets outside of the solar system, form, evolve, what are they made of, and if they possess the right conditions to support the existence of liquid water in their surfaces.”
New Giant Planet Is Evidence of Possible Planetary Collisions A Neptune-sized planet denser than steel has been discovered by an international team of astronomers, who believe its composition could be the result of a giant planetary clash. TOI-1853b's mass is almost twice that of any other similar
Two possible pathways for the formation of TOI-1853 b, an exoplanet found in the middle of the Neptunian desert asking for a scenario of its formation and evolution.
There are more than 5,000 confirmed exoplanets in our galaxy. That number is going to rise significantly in the next decade. The Transiting Exoplanet Survey Satellite (TESS) has already cataloged more than 4,000 candidate exoplanets, and the PLAnetary Transits and Oscillations of stars (PLATO) is scheduled to launch in 2026.
Using NASA's Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers has discovered a new giant exoplanet transiting a nearby M-dwarf star. The newfound alien world, designated TOI-4860 b, is comparable in size and mass to Saturn. The finding is reported in a paper published August 2 on the pre-print...
Strange Neptune-Sized Planet Is Denser Than Steel – May Be Result of a Giant Planetary Clash (scitechdaily.com)
New Giant Planet Is Evidence of Possible Planetary Collisions A Neptune-sized planet denser than steel has been discovered by an international team of astronomers, who believe its composition could be the result of a giant planetary clash. TOI-1853b's mass is almost twice that of any other similar
TESS has found thousands of possible exoplanets: Which ones should JWST study? (phys.org)
There are more than 5,000 confirmed exoplanets in our galaxy. That number is going to rise significantly in the next decade. The Transiting Exoplanet Survey Satellite (TESS) has already cataloged more than 4,000 candidate exoplanets, and the PLAnetary Transits and Oscillations of stars (PLATO) is scheduled to launch in 2026.
Saturn-sized exoplanet discovered with TESS (phys.org)
Using NASA's Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers has discovered a new giant exoplanet transiting a nearby M-dwarf star. The newfound alien world, designated TOI-4860 b, is comparable in size and mass to Saturn. The finding is reported in a paper published August 2 on the pre-print...