| Autor: |
Anicia Arredondo, Margaret M. McAdam, Casey I. Honniball, Tracy M. Becker, Joshua P. Emery, Andrew S. Rivkin, Driss Takir, Cristina A. Thomas |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
The Planetary Science Journal, Vol 5, Iss 2, p 37 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2632-3338 |
| DOI: |
10.3847/PSJ/ad18b8 |
| Popis: |
We used the FORCAST instrument on SOFIA to obtain mid-infrared spectra (4.9–13.7 μ m) of four S-type asteroids: (7) Iris, (11) Parthenope, (18) Melpomene, and (20) Massalia. Three of these four silicate-rich asteroids (Iris, Melpomene, and Massalia) were observed to have 3 μ m features indicative of hydration by McAdam et al. We report a detection of a 6 μ m feature that is unambiguously attributed to molecular water on two asteroids, Iris and Massalia, with peak heights of 4.532% ± 0.011% and 4.476% ± 0.012%, respectively. We estimate the abundance of molecular water based on these peak heights to be 454 ± 202 μ g g ^−1 and 448 ± 209 μ g g ^−1 , consistent with values found on the sunlit Moon by SOFIA+FORCAST. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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