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Spatially Resolved Observations of Europa’s Surface with Subaru/IRCS at 1.0–1.8 μm: Upper Limits to the Abundances of Hydrated Cl-bearing Salts

  • Authors: Shuya Tan, Yasuhito Sekine, and Masayuki Kuzuhara

2022 The Planetary Science Journal 3 70.

  • Provider: AAS Journals

Caption: Figure 5.

Observed regions on Europa’s surface map (image credit: USGS Map-a-planet). The green and yellow areas were observed on 2019 May 17 and 18, respectively. The green region covers the southeastern region of the trailing hemisphere (210°–180°W, 20°–50°S) and the southwestern region of the leading hemisphere (180–110°W, 20–50°S). The yellow area covers the southern region of the trailing hemisphere (330°–190°W, 30°–60°S). The gray area covers a part of the northern regions of the trailing hemisphere (256° ± 5°W, 15° ± 14°N). The red area covers a part of the equatorial regions of the leading hemisphere (160° ± 9°W, 3° ± 15°N). The spectral data of two areas are used for the estimations for hydrated Cl-bearing salts (see detailed in Section 4). The regions outlined by thick black lines enclose chaotic terrains (Doggett et al. 2009).

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