A ring system detected around the Centaur (10199) Chariklo
Year: 2021
Type: article
Abstract: Until now, rings have been detected in the Solar System exclusively around the four giant planets. Here we report the discovery of the rst minor-body ring system around the Centaur object (10199) Chariklo, a body with equivalent radius 124±9 km. A multi-chord stellar occultation revealed the presence of two dense rings around Chariklo, with widths of about 7 km and 3 km, optical depths 0.4 and 0.06, and orbital radii 391 and 405 km, respectively. The present orientation of the ring is consistent with an edge-on geometry in 2008, thus providing a simple explanation for the dimming of Chariklo's system between 1997 and 2008, and for the gradual disappearance of ice and other absorption features in its spectrum over the same period. This implies that the rings are partially composed of water ice. These rings may be the remnants of a debris disk, which were possibly con ned by embedded kilometre-sized satellites.
Source: Americanae (AECID Library)
DOI: 10.17615/1d58-hp56
Authors: Lellouch, E., Dominik, M., Maquet, L., Char, F., Wang, X.-b., Reichart, D. E., Mehret, L., Martinez, N., Schneiter, E. M., Morales, N., Moore, J. P., Perez, V., Ligier, N., LaCluyze, A. P., Duffard, R., Ramos Gomes, A., Gil-Hutton, R., Roig, F., Colas, F., Snodgrass, C., Almenares, L., Vieira-Martins, R., Lecacheux, J., Spagnotto, J., Roques, F., Gillon, M., Manfroid, J., Sandness, R. G., Assafin, M., Vanzi, L., Lemos, P., Opitom, C., Skottfelt, J., Widemann, T., El Moutamid, M., Emilio, M., Harpsøe, K., Lambas, D. G., Haislip, J. B., Sfair, R., Jørgensen, U. G., Rabus, M., Monteiro, H., Braga-Ribas, F., Frank, N. R., Ceretta, A., Lorenzini, L., Camargo, J. I. B., Maury, A., Colazo, C., Ortiz, J. L., Vachier, F., Jehin, E., Benedetti-Rossi, G., Machado, D. I., Roland, S., Sicardy, B., Melia, R., Gu, S.-h., Pollock, J., Tancredi, G., Leiva, R., Kervella, P., Ivarsen, K. M.
Institution: University of North Carolina at Chapel Hill
Language: English
Topic: Astro and Planetary Science
Subfield: Space and Planetary Science
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: green
Funders: National Science Foundation, National Aeronautics and Space Administration, California Institute of Technology, Michigan State University, European Commission, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, National Natural Science Foundation of China, Fonds De La Recherche Scientifique - FNRS, Ministério da Ciência, Tecnologia e Inovação, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Jet Propulsion Laboratory, College of Engineering, Michigan State University, University of California, Los Angeles, University of North Carolina at Chapel Hill, Comisión Nacional de Investigación Científica y Tecnológica
Awards: G1323383031, Ultrafast phenomena in nanoparticle excitations, MRI-R2 Consortium Acquisition: Targeted Expansions of the Skynet Robotic Telescope Network's Wavelength, Geographic, and User-Community Footprints, G3207356259, Ice: Small and Near, Distant and Large. Understanding planet formation through observation of Solar-System minor bodies and extra-solar planets, G393177772, G4104599821, 太阳系外行星物理参数的观测研究, G5702163051, G6412048503, G7003971911, G8015274529, Continued Development and Growth of the Skynet Robotic Telescope Network, Continued Development and Growth of the Skynet Robotic Telescope Network
OpenAlex ID: W4300544101