beandeau>

Contributions > By speaker > Osborn Hugh

A transiting solar system analogue discovered in TESS
Hugh Osborn  1, 2@  
1 : Universität Bern
2 : ETH Zurich

Although our own solar system features close-in small planets and far-out giant planets, this is not the norm for exoplanetary systems. This is especially true for transiting planets, for which the vast majority of known multiplanetary systems are compact and seem to show a "peas in the pod" architecture. This is a shame as transiting planets are unique in allowing full planetary characterisation with radius, mass & even atmospheric information from transmission spectroscopy. I will present a newly-detected transiting multi-planet system featuring two low-mass (<20Me) inner planets - with radii of 3.2 & 4.9Re - and a 80±7Me outer giant planet with a Saturn-like radius and an equilibrium temperature of only 315K. The system was found via a combination of TESS photometry and ground-based follow-up photometry. I will present how the transiting nature of the system and high expected JWST SNR will enable tests of planet formation via the detailed atmospheric characterisation of both inner and outer planets.


Loading... Loading...