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Towards the Detection and Characterization of Non-Transiting Planets

Presentation #604.04 in the session Planet Detection - Other.

Published onApr 03, 2024
Towards the Detection and Characterization of Non-Transiting Planets

The vast majority of our nearest exoplanetary neighbors are non-transiting and inaccessible to characterization via direct imaging techniques. The tools needed to study the atmospheres of these exoplanets are still in their infancy, but have made significant strides in recent years. The planetary infrared excess (PIE) technique has the potential to efficiently detect and characterize the thermal spectra of both transiting and non-transiting exoplanets. We follow the unfolding discoveries in the TRAPPIST-1 system, in an idealized test bed of blackbody assumptions, and present the results from the PIE technique at every stage of discovery. We find that with JWST and MIRECLE-like concepts, we can infer the presence of multiple planets in the system and, when combined with additional constraints from other techniques, we can constrain the orbital periods and equilibrium temperatures of a compact multiplanet system. Yet, M-dwarf and planetary atmospheres are not well-represented by simple blackbodies. We discuss the latest efforts in non-transiting planet detection and characterization with realistic stellar and planetary atmospheres and the remaining barriers.

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