2015/05/28 by T. Grav, Tommy Grav, J. M. Bauer +13 · 2 citations
Earth and Planetary Sciences · Physics and Astronomy · #Astro and Planetary Science #High-pressure geophysics and materials #Planetary Science and Exploration #astro-ph.EP
paper · pdf · doi:10.1088/0004-637x/809/1/3
17 pages, 3 figures, accepted for publication in Astrophysical Journal
arxiv created 2015/05/28 · openalex publication_date 2015/08/04 · arxiv updated 2015/08/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31
We present thermal model fits for 11 Jovian and 3 Saturnian irregular satellites based on measurements from the WISE/NEOWISE dataset. Our fits confirm spacecraft-measured diameters for the objects with in situ observations (Himalia and Phoebe) and provide diameters and albedo for 12 previously unmeasured objects, 10 Jovian and 2 Saturnian irregular satellites. The best-fit thermal model beaming parameters are comparable to what is observed for other small bodies in the outer Solar System, while the visible, W1, and W2 albedos trace the taxonomic classifications previously established in the literature. Reflectance properties for the irregular satellites measured are similar to the Jovian Trojan and Hilda Populations, implying common origins.