Observation of Io's Resurfacing via Plume Deposition Using Ground‐Based Adaptive Optics at Visible Wavelengths With LBT SHARK‐VIS
- Creators
- Conrad, Al
- Pedichini, Fernando
- Li Causi, Gianluca
- Antoniucci, Simone
- de Pater, Imke
- Davies, Ashley Gerard
- de Kleer, Katherine1
- Piazzesi, Roberto
- Testa, Vincenzo
- Vaccari, Piero
- Vicinanza, Martina
- Power, Jennifer
- Ertel, Steve
- Shields, Joseph C.
- Ragland, Sam
- Giorgi, Fabrizio
- Jefferies, Stuart M.
- Hope, Douglas
- Perry, Jason
- Williams, David A.
- Nelson, David M.
Abstract
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes on Io's surface have been monitored from both spacecraft and ground-based telescopes. Here, we present the highest spatial resolution images of Io ever obtained from a ground-based telescope. These images, acquired by the SHARK-VIS instrument on the Large Binocular Telescope, show evidence of a major resurfacing event on Io's trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images show that a plume deposit from a powerful eruption at Pillan Patera has covered part of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io's surface using adaptive optics at visible wavelengths.
Copyright and License
© 2024. The Author(s). This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License, which permits use anddistribution in any medium, provided theoriginal work is properly cited, the use isnon‐commercial and no modifications oradaptations are made.
Acknowledgement
Observations have benefited from the use of ALTA Center (alta.arcetri.inaf.it) forecasts performed with the Astro-Meso-Nh model. Initialization data of the ALTA automatic forecast system come from the General Circulation Model (HRES) of the European Centre for Medium Range Weather Forecasts. The authors are grateful to Marco Stangalini for his help during the development of the Forerunner of SHARK-VIS and his suggestions about the fast imaging approach with sCMOS detectors. The Kraken code was developed under the Air Force Office of Scientific Research award number FA9550-14-1-0178. We thank the Keck Observatory staff for their dedication to obtaining Twilght Zone images. We acknowledge the vital work of the Juno Project in obtaining Io data. Part of this work was performed at the Jet Propulsion Laboratory—California Institute of Technology, under Government contract. Ashley Davies, Jason Perry, David Williams, and David Nelson are supported by the NASA New Frontiers Data Analysis Program (NFDAP) under award 80NM0018F0612. The LBT is an international collaboration among institutions in the United States, Italy, and Germany. LBT Corporation Members are: The University of Arizona on behalf of the Arizona Board of Regents; Istituto Nazionale di Astrofisica, Italy; LBT Beteiligungsgesellschaft, Germany, representing the Max-Planck Society, The Leibniz Institute for Astrophysics Potsdam, and Heidelberg University; The Ohio State University, representing OSU, University of Notre Dame, University of Minnesota and University of Virginia.
Data Availability
The data for this observation are recorded in FITS files as follows. These data are available from Zenodo (Conrad, 2024).
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For the November observation: 2023_11_22-IRV_centered.fits
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For the January observation: 2024_01_09-IRV_centered.fits
Files
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Additional details
- ISSN
- 1944-8007
- United States Air Force Office of Scientific Research
- FA9950‐14‐1‐0178
- Jet Propulsion Laboratory
- National Aeronautics and Space Administration
- 80NM0018F0612
- Caltech groups
- Astronomy Department, Division of Geological and Planetary Sciences