Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10701363 | Icarus | 2013 | 17 Pages |
Abstract
Results of the infrared-to-centimeter comparisons confirm that low thermal inertia (I â¼Â 5-80 J/(K m2 s0.5)) material constitutes the upper â¼1 cm of the four large asteroids studied. For the non-isothermal models considered, spectral emissivities near 1.0 fit the data of all four asteroids with no significant variations indicated throughout the infrared to microwave spectrum. Enhanced measured infrared flux levels (relative to a smooth surface model) of the four asteroids are constrained by a surface model with up to 50% fractional coverage of hemispherical craters, consistent with both the recent Lutetia result and historical measurements of the Moon's thermal flux characteristics.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Space and Planetary Science
Authors
Stephen Keihm, Lucas Kamp, Samuel Gulkis, Mark Hofstadter, Seungwon Lee, Michael Janssen, Mathieu Choukroun,