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Showing 1–8 of 8 results
Advanced filters: Author: Alexander Tielens Clear advanced filters

  • JWST reveals the chemistry of the disk of a young star in the Orion nebula, showing that it has water and CO in its inner regions that are shielded from UV radiation, whereas UV-processed molecules such as CH3+ and PAHs are detected in surface layers.

    • Ilane Schroetter
    • Olivier Berné
    • Marion Zannese
    Research
    Nature Astronomy
    Volume: 9, P: 1326-1336

  • Mapping the 158 μm line of ionized carbon within the Cygnus region with the SOFIA observatory provides evidence for dynamic interactions between molecular clouds and their atomic envelopes, which trace out the assembly process of cloud complexes.

    • Nicola Schneider
    • Lars Bonne
    • Alexander G.G.M. Tielens
    ResearchOpen Access
    Nature Astronomy
    Volume: 7, P: 546-556

  • The hydroxyl radical OH has been detected in a planet-forming disk exposed to ultraviolet radiation and in a rovibrationally excited state. These JWST observations, when coupled with quantum calculations, reveal the ongoing photodissociation of water and its reformation in the gas phase.

    • Marion Zannese
    • Benoît Tabone
    • Mark G. Wolfire
    Research
    Nature Astronomy
    Volume: 8, P: 577-586

  • JWST observations of CH3+ in a protoplanetary disk in the Orion star-forming region are reported showing that gas-phase organic chemistry in the interstellar medium is activated by ultraviolet irradiation and the methyl cation.

    • Olivier Berné
    • Marie-Aline Martin-Drumel
    • Mark G. Wolfire
    Research
    Nature
    Volume: 621, P: 56-59

  • Pyrene, a polycyclic aromatic hydrocarbon composed of four fused benzene rings, is putatively a key molecule in the formation of 2D carbonaceous structures. Using experimental and computational techniques, Zhao et al. show that pyrene can form in circumstellar conditions.

    • Long Zhao
    • Ralf I. Kaiser
    • Alexander M. Mebel
    Research
    Nature Astronomy
    Volume: 2, P: 413-419