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  • Biver, Nicolas (author)

Ethyl alcohol and sugar in comet C/2014 Q2 (Lovejoy)

  • Article/chapterEnglish2015

Publisher, publication year, extent ...

  • American Association for the Advancement of Science (AAAS),2015
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:su-122498
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-122498URI
  • https://doi.org/10.1126/sciadv.1500863DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • The presence of numerous complex organic molecules (COMs; defined as those containing six or more atoms) around protostars shows that star formation is accompanied by an increase of molecular complexity. These COMs may be part of the material from which planetesimals and, ultimately, planets formed. Comets represent some of the oldest and most primitive material in the solar system, including ices, and are thus our best window into the volatile composition of the solar protoplanetary disk. Molecules identified to be present in cometary ices include water, simple hydrocarbons, oxygen, sulfur, and nitrogen-bearing species, as well as a few COMs, such as ethylene glycol and glycine. We report the detection of 21 molecules in comet C/2014 Q2 (Lovejoy), including the first identification of ethyl alcohol (ethanol, C2H5OH) and the simplest monosaccharide sugar glycolaldehyde (CH2OHCHO) in a comet. The abundances of ethanol and glycolaldehyde, respectively 5 and 0.8% relative to methanol (0.12 and 0.02% relative to water), are somewhat higher than the values measured in solar-type protostars. Overall, the high abundance of COMs in cometary ices supports the formation through grain-surface reactions in the solar system protoplanetary disk.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Bockelée-Morvan, Dominique (author)
  • Moreno, Raphaël (author)
  • Crovisier, Jacques (author)
  • Colom, Pierre (author)
  • Lis, Dariusz C. (author)
  • Sandqvist, AageStockholms universitet,Institutionen för astronomi(Swepub:su)aage (author)
  • Boissier, Jérémie (author)
  • Despois, Didier (author)
  • Milam, Stefanie N. (author)
  • Stockholms universitetInstitutionen för astronomi (creator_code:org_t)

Related titles

  • In:Science Advances: American Association for the Advancement of Science (AAAS)1:92375-2548

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