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The Large inclination Distant Objects (LiDO) Survey: Survey Design and Discoveries

Presentation #209.07 in the session TNO Theory/Formation and Observational Surveys (Oral Presentation)

Published onOct 23, 2023
The Large inclination Distant Objects (LiDO) Survey: Survey Design and Discoveries

The Large inclination Distant Objects (LiDO) survey is an off-ecliptic trans-Neptunian Object (TNO) discovery survey which has found 148 objects. The LiDO survey discovery observations were acquired in 2020B and 2021A using the Canada-France-Hawaii Telescope (CFHT) on Maunakea. The fields were designed to be narrow but tall (3 degrees wide, located ~14-21 degrees off ecliptic), to probe the inclination distribution of high-inclination populations, particularly resonant TNOs such as Plutinos. All 148 objects discovered in the survey are (by design) inclination i>14 degrees, and these discoveries will provide a critical lever arm for constraining the width of the inclination distribution of resonant and distant TNOs. The discovery fields reached depths of mgri=25.1-25.6, and every detected object with distances>25 au and above the 40% completeness limiting magnitude has now been tracked for 3 years. We present the classified discoveries from the LiDO survey, and the constraints they place on giant planet migration and TNO emplacement simulations.

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