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ALMA Confirms 17 Complex Organic Molecules in V883 Orionis Disk

Researchers aim to validate preliminary detections with finer spectral resolution to uncover more organic compounds.

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Overview

  • Using the ALMA observatory in Chile’s Atacama Desert, astronomers led by Abubakar Fadul identified 17 complex organics in the V883 Orionis disk following a powerful stellar outburst that released icy molecules into the gas phase.
  • Among the molecules detected were glycolonitrile, a precursor to amino acids and the nucleobase adenine, and ethylene glycol, which is linked to advanced organic reactions relevant to RNA and DNA formation.
  • The findings, published in The Astrophysical Journal Letters, support an astrochemical inheritance model in which protoplanetary disks retain and synthesize complex molecules from interstellar clouds.
  • These observations challenge the “reset scenario” by showing that star formation does not destroy existing molecular complexity and may facilitate ongoing chemical enrichment in planet-forming regions.
  • Co-author Kamber Schwarz cautions that higher-resolution data are needed to confirm tentative detections and may reveal even more prebiotic compounds in the young star’s disk.