Decoding Exoplanet Personalities Big and Small while Inspiring the Next Generation

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• Nataliea Lowson (U. Southern Queensland)
• Thursday 19 October 2023, 13:00-14:00
• Ryle seminar room + ONLINE - Details to be sent by email.

If you have a question about this talk, please contact Dr Emily Sandford.

Note unusual day

Close-in planets, characterised by short orbits around their host stars, demonstrate the complexities behind planetary formation, migration, and atmospheric dynamics. This work embraces a multi-faceted approach towards hot exoplanet atmospheres, commencing with the atmospheric characterisation of an ultra-hot Jupiter using archival data obtained from 1.5 m ground-based telescope. We recover strong detections of Fe I, FII , and Mg I while also modelling a peculiar H-alpha transit. Subsequently we prepare for atmosphere analysis via the detection two new sub-Neptunes around an adolescent K-star using photometry from TESS and CHEOPS . Our analysis evaluates that inner planet resides in the sparsely populated radius gap, indicating that it could be undergoing significant atmospheric evaporation. Lastly, I share UniSQ’s contribution towards preliminary target preparation for the upcoming Twinkle Space Mission, which will characterise exoplanet atmospheres over the course of its mission. This presentation also highlights some outreach endeavours I have contributed towards prior and in addition to this research, which primarily aim to increase astronomy accessibility and improve diversity in STEM .

This talk is part of the Exoplanet Seminars series.

This talk is included in these lists:

• Cambridge Astronomy Talks
• Combined External Astrophysics Talks DAMTP
• Cosmology, Astrophysics and General Relativity
• Exoplanet Seminars
• Institute of Astronomy Talk Lists
• LCLU Departmental Talks
• Ryle seminar room + ONLINE - Details to be sent by email

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