The NEO (175706) 1996 FG3 in the 2–4μm spectral region: Evidence for an aqueously altered surface

Autor: Andrew S. Rivkin, Ronald J. Vervack, Ellen S. Howell, Yan Fernandez, Michael C. Nolan, C. Magri, Andrew F. Cheng, M. Antonietta Barucci, Patrick Michel
Přispěvatelé: Johns Hopkins University Applied Physics Laboratory [Laurel, MD] (APL), Economics, University of Hull, Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), De la Préhistoire à l'Actuel : Culture, Environnement et Anthropologie (PACEA), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS)
Rok vydání: 2013
Předmět:
Zdroj: Icarus
Icarus, 2013, 223 (1), pp.493-498. ⟨10.1016/j.icarus.2012.12.016⟩
Icarus, Elsevier, 2013, 223 (1), pp.493-498. ⟨10.1016/j.icarus.2012.12.016⟩
ISSN: 0019-1035
1090-2643
DOI: 10.1016/j.icarus.2012.12.016
Popis: We present observations of the binary near-Earth Asteroid (175706) 1996 FG3 in the 2–4 μm spectral region, obtained on multiple nights using the SpeX instrument on the NASA Infrared Telescope Facility (IRTF). We find evidence for an absorption band of ∼5–10% (depending on the night and details of continuum choice), diagnostic for hydrated/hydroxylated minerals on the asteroid surface. This demonstrates that the optical surface of 1996 FG3 has not been heated to dehydrating temperatures. Sample-return missions targeting 1996 FG3 will likely find relatively fresh areas for sampling.
Databáze: OpenAIRE
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