Planet search around seven white dwarfs in the Hyades cluster using kernel phase interferometry

Chelsea Adelman; Steph Sallum

doi:10.1117/12.3020532

28 August 2024 Planet search around seven white dwarfs in the Hyades cluster using kernel phase interferometry

Chelsea Adelman, Steph Sallum

Proceedings Volume 13095, Optical and Infrared Interferometry and Imaging IX; 130952V (2024) https://doi.org/10.1117/12.3020532
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

The majority of the 5600+ confirmed exoplanets orbit stars that will eventually become white dwarfs (WDs). Very few planets have been discovered around WDs, and only two planet candidates have been directly imaged, which leaves gaps in our knowledge of how planetary systems evolve as stars evolve. Directly imaging planets orbiting WDs poses challenges, as WDs are very faint and the limitations of adaptive optics cause poor ground-based image quality, making it difficult to detect planets at tight angular separations. While space observatories can offer better image quality, there is a limit to detecting planets at solar system scales due to their smaller telescope diameters. The data processing technique of kernel phase interferometry (KPI) can overcome these challenges, boosting angular resolution by a factor of a few to several. Here we present a KPI analysis of archival Hubble Space Telescope imaging of seven WDs in the Hyades cluster, which we use to search for planets that have survived the death of their host star. Applying KPI to this dataset has resulted in the highest resolution infrared direct imaging planet search around WDs to date. This will provide new constraints on post main sequence planetary evolution.

Citation Download Citation

Chelsea Adelman and Steph Sallum "Planet search around seven white dwarfs in the Hyades cluster using kernel phase interferometry", Proc. SPIE 13095, Optical and Infrared Interferometry and Imaging IX, 130952V (28 August 2024); https://doi.org/10.1117/12.3020532

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