0 Assigned ID: 4673 ----- Attempting Submission 1 (Wed May 24 21:36:07 GMT 2023) ----- HST Phase I Proposal 4673 successfully submitted. Receipt: # 4673-1 ----- Attempting Submission 2 (Wed May 24 22:11:58 GMT 2023) ----- HST Phase I Proposal 4673 successfully submitted. Receipt: # 4673-2 ----- Attempting Submission 3 (Wed May 24 22:37:18 GMT 2023) ----- 0 Assigned ID: 9156 ----- Attempting Submission 1 (Wed May 24 21:34:52 GMT 2023) ----- HST Phase I Proposal 9156 successfully transmitted Receipt: # 9156-1 Observing small and distant TNOs poses a significant challenge owing to their faintness. To date, the deepest searches have been performed using dedicated HST programs reaching as deep as R=28. Searches have however been confined to pointings close to the ecliptic, up to inclinations of +-20 deg. Here, we propose to leverage our GPU-based shift-and-stack pipeline to mine the Hubble Ultra Deep Field data expanding previous studies in two ways. First, by becoming sensitive to objects 2 magnitudes fainter, objects which should be ~3 times more abundant. Second, by probing a higher inclination ~45 deg thereby providing new constraints on the inclination distribution of distant TNOs. In addition, our analysis will provide color constraints, helping disentangle between evolution theories (collision vs early formation). PI Dr. Artem Burdanov has an expertise in searching for small Solar System bodies using synthetic tracking technique in the data from ground-based surveys (Burdanov, Hasler, de Wit 2023). He is also an expert in detection and characterization of transiting gas giant exoplanets and brown dwarfs using ground-based telescopes (Burdanov et al. 2018, Benni et. al. 2021). He participated in follow-up observations of TRAPPIST-1 planets with the Spitzer Space Telescope (Proposal ID #13067, Agol et al., 2021) and HST (GO 14500, de Wit 2016a) as a Co-I. Co-PI Prof. Julien de Wit has a significant expertise in the analysis of HST optical and infrared data. Prof. de Wit was part of the team behind the discovery of the TRAPPIST-1 system, led the atmospheric reconnaissance of the planets with several HST programs (GO 14500, de Wit 2016a; GO 14873, de Wit et al. 2018), and enabled new characterization techniques notably with the Spitzer Space Telescope (de Wit et al., 2016b). CO-I Samantha Hasler has an expertise in searching for small Solar System bodies using synthetic tracking technique in the data collected by the Antarctic Search for Transiting ExoPlanets (ASTEP) project (Hasler et al. 2023, in prep). Benni et al.,. Monthly Notices of the Royal Astronomical Society, Volume 505, Issue 4, pp.4956-4967 (2021) Burdanov, Hasler, de Wit, Monthly Notices of the Royal Astronomical Society, Volume 521, Issue 3, pp.4568-4578 Burdanov et al., Publications of the Astronomical Society of the Pacific, Volume 130, Issue 989, pp. 074401 (2018) de Wit et al., Nature, Volume 537, Issue 7618, pp. 69-72 (2016a) de Wit et al., Nature Astronomy, Volume 2, p. 214-219 (2018) de Wit et al., The Astrophysical Journal Letters, Volume 820, Issue 2, article id. L33, 6 pp. (2016b) Solar System Astronomy 0 Regular false false false false false false SUPPORTED