Near-Infrared Spectroscopy of Centaurs and Irregular Satellites | Zendy

Michael E. Brown | Zendy

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Near-Infrared Spectroscopy of Centaurs and Irregular Satellites

Author(s) -

Michael E. Brown

Publication year - 2000

Publication title -

the astronomical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.61

H-Index - 271

eISSN - 1538-3881

pISSN - 0004-6256

DOI - 10.1086/301202

Subject(s) - centaur , physics , asteroid , astrobiology , planetesimal , astronomy , planet , jupiter (rocket family) , water ice , trans neptunian object , solar system , outer planets , infrared , infrared spectroscopy , asteroid belt , astrophysics , quantum mechanics , space shuttle

We have obtained near infrared spectra of the 4 brightest known Centaurs and of 5 irregular satellites of giant planets. Many of these objects show 1.5 and 2.0 µm absorption bands indicative of water ice, including 1997 CU26, Pholus, Phoebe (S9), and Nereid (N2). The satellites of Jupiter - Elara, Himalia, and Pasaphae (J6, J7, J8) - appear spectrally featureless, consistent with asteroidal origins for these bodies. Phoebe's surface water ice indicates that it formed as an icy planetesimal rather than as an asteroid.

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