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Carbonates in Ryugu and Bennu with MicrOmega: Insights into Aqueous Alteration on Primitive Asteroids

  • Authors: Max Mahlke, Cateline Lantz, Cédric Pilorget, Donia Baklouti, Rosario Brunetto, Kentaro Hatakeda, Te Jiang, Damien Loizeau, Rachel Sheppard, Alice Aléon-Toppani, Masanao Abe, Jean-Pierre Bibring, Yuma Enokido, Ryota Fukai, Vincent Hamm, Yuya Hitomi, Seiya Kawasaki, Tania Le Pivert-Jolivet, Akiko Miyazaki, Kana Nagashima, Arisa Nakano, Aiko Nakato, Laura Nardelli, Masahiro Nishimura, Tomoko Ojima, Tatsuaki Okada, François Poulet, Lucie Riu, Ryosuke Sakurai, Rui Tahara, Tomohiro Usui, Toru Yada, Kasumi Yogata, Satoru Nakazawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Seiichiro Watanabe, Makoto Yoshikawa, Yuichi Tsuda

Max Mahlke et al 2026 The Planetary Science Journal 7 .

  • Provider: AAS Journals

Caption: Figure 3.

The top row shows false-RGB images of the samples acquired with MicrOmega. Carbonate-rich pixels are colored-in based on the most-likely carbonate composition for the respective pixel. Below the RGBs, we show the mean spectrum of all pixels associated with the dominant carbonate species in the measurement and the respective reference spectrum. The spectra are continuum-removed and vertically shifted for readability. The false-RGB channels represent the mean absorption around 2 µm, 3.4 µm, and 2.72 µm, respectively. The size scale is the same in all images.

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