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Sökning: WFRF:(Thorwirth S.)

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1.
  • Berné, O., et al. (författare)
  • Formation of the methyl cation by photochemistry in a protoplanetary disk
  • 2023
  • Ingår i: Nature. - 0028-0836 .- 1476-4687. ; 621:7977, s. 56-59
  • Tidskriftsartikel (refereegranskat)abstract
    • Forty years ago, it was proposed that gas-phase organic chemistry in the interstellar medium can be initiated by the methyl cation CH3+ (refs. 1–3), but so far it has not been observed outside the Solar System 4,5. Alternative routes involving processes on grain surfaces have been invoked 6,7. Here we report James Webb Space Telescope observations of CH3+ in a protoplanetary disk in the Orion star-forming region. We find that gas-phase organic chemistry is activated by ultraviolet irradiation.
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2.
  • Neufeld, D.A., et al. (författare)
  • Discovery of interstellar CF
  • 2006
  • Ingår i: Astronomy & Astrophysics. ; 454, s. L37-L40
  • Tidskriftsartikel (refereegranskat)
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3.
  • Neufeld, D.A., et al. (författare)
  • First Astronomical Detection of the CF+ Ion
  • 2006
  • Ingår i: Astrochemistry: Recent successes and current challenges, Proc. of the 231st symposium of the IAU, Pacific Grove, California, Aug-Sept 2005, eds. D.C. Lis, G.A. Blake, E. Herbst, Cambridge University Press. ; , s. 163-164
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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4.
  • Wyrowski, F., et al. (författare)
  • APEX and ATCA observations of the southern hot core G327.3-0.6 and its environs
  • 2008
  • Ingår i: Astrophysics and Space Science. - : Springer Science and Business Media LLC. - 1572-946X .- 0004-640X. ; 313:1-3, s. 69-72
  • Tidskriftsartikel (refereegranskat)abstract
    • There is no generally accepted evolutionary scheme for high mass star formation yet. A simple approach to address this problem is to cover several of the known stages during the formation of massive stars in the same cloud and then investigate their properties trying to construct an evolutionary sequence. Here we present such a project conducted with complementary APEX and ATCA observations. These observations show a compact and bright single hot core in the G327.3-0.6 region on a 0.03 pc scale with a mass of 500 M and 0.5-1.5 10 5 L. Additionally a clumpy filament is seen in N 2 H + . Together with cm continuum observations, the data reveal like pearls on a string several stages of massive star formation, with likely the youngest stages hiding in the cold N 2 H + cores analysed with a multilevel study of the APEX and ATCA observations. © 2007 Springer Science+Business Media B.V.
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  • Resultat 1-5 av 5

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