Two talks

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Two talks

Wednesday, December 08, 2021, 12:00pm - 01:00pm

This repeat is an exception to the normal repeat pattern

Jake Clark, University of Southern Queensland
The Astronomical Throuple: Unveiling exoplanetary science through stellar surveys and galactic archaeology

Abstract

Pioneering photometric, astrometric, and spectroscopic surveys are helping exoplanetary scientists better constrain the fundamental properties of stars within our galaxy, and the planets these stars host. In this talk, I'll be highlighting the work done in my dissertation in utilising the galactic archaeology survey GALAH, along with GAIA and other surveys to to better understand the explanets and the stars that host them across our galaxy. This includes; forward predicting what types of rocky worlds TESS is likely to uncover, determining differences in planetary populations through stellar abundances, refining the fundamental properties of exoplanets, using chemo-kinematics to determine stellar populations of exoplanet hosts and more!

Alexis Heitzmann, University of Southern Queensland
Are These Planets Revealing their Formation History?

Abstract

The evolution of exoplanet characteristics might be the key to understand the formation and evolution of gas giant exoplanets found to orbit very close to their host stars. Orbit obliquity (i.e. the angle between the stellar rotation axis and the orbital normal of the planet) is one such parameter. For very young systems, it can help disentangling the true primordial orbits of orbiting planets and deliver crucial insights on their formation and evolution pathways. HIP 67522 is a 17-Million-year-old Solar analogue that hosts a close-in Jupiter-sized exoplanet with an orbital period of 6.95 days. In this talk, I will show how we measured, despite the stellar activity of the very young host star, HIP 67522 b’s obliquity and discuss the implications of this finding. I will also present an upcoming discovery of an exoplanet that might be giving away its formation history.

Location: Online