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Showing 1–5 of 5 results
Advanced filters: Author: Javier Licandro Clear advanced filters

  • JWST/NIRSpec spectra are used to analyse the surfaces of Centaurs, revealing two main compositions: those with refractory materials and water ice and those rich in carbon-based materials. Strong surface weathering due to thermal processing may be responsible.

    • Javier Licandro
    • Noemí Pinilla-Alonso
    • Ian Wong
    Research
    Nature Astronomy
    Volume: 9, P: 245-251

  • It has been suggested that Earth's current supply of water was delivered by asteroids. The presence of water on the surface of some asteroids has been inferred from the comet-like activity of several small asteroids, including two members of the Themis dynamical family, but hitherto has not been measured. Here, infrared spectra of the asteroid 24 Themis are reported; the results show that ice and organic compounds are not only present, but also prevalent, on its surface.

    • Humberto Campins
    • Kelsey Hargrove
    • Julie Ziffer
    Research
    Nature
    Volume: 464, P: 1320-1321

  • The near-infrared spectrometer onboard JWST has detected CO2 and CO ices on 56 and 29 trans-Neptunian objects, respectively, indicating two dominant compositional types among them. These compositional differences suggest varied formation regions in the protoplanetary disk.

    • Mário N. De Prá
    • Elsa Hénault
    • Joshua P. Emery
    Research
    Nature Astronomy
    Volume: 9, P: 252-261

  • Both poles of asteroid Ryugu, the target of space mission Hayabusa2, preserve the least processed material by space weathering. Here, the authors show detection of 700 nm absorption band in the polar spectra of Ryugu, that allows to constrain the hydrothermal history of its spectrally blue parent body.

    • Eri Tatsumi
    • Naoya Sakatani
    • Seiji Sugita
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-13