A revised asteroid polarization-albedo relationship using WISE/NEOWISE data
| Autor: | Masiero, Joseph R., Mainzer, A. K., Grav, T., Bauer, J. M., Wright, E. L., McMillan, R. S., Tholen, D. J., Blain, A. W. |
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| Rok vydání: | 2012 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/0004-637X/749/2/104 |
| Popis: | We present a reanalysis of the relationship between asteroid albedo and polarization properties using the albedos derived from the Wide-field Infrared Survey Explorer. We find that the function that best describes this relation is a three-dimensional linear fit in the space of log(albedo)-log(polarization slope)-log(minimum polarization). When projected to two dimensions the parameters of the fit are consistent with those found in previous work. We also define p* as the quantity of maximal polarization variation when compared with albedo and present the best fitting albedo-p* relation. Some asteroid taxonomic types stand out in this three-dimensional space, notably the E, B, and M Tholen types, while others cluster in clumps coincident with the S- and C-complex bodies. We note that both low albedo and small (D<30 km) asteroids are under-represented in the polarimetric sample, and we encourage future polarimetric surveys to focus on these bodies. Comment: 16 pages, Accepted to ApJ |
| Databáze: | arXiv |
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