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Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
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A new interstellar molecule: tricarbon monoxide.

H E Matthews1, W M Irvine, P Friberg

  • 1Herzberg Institute for Astrophysics, National Research Council of Canada, Ottawa.

Nature
|July 12, 1984
PubMed
Summary
This summary is machine-generated.

Taurus Molecular Cloud One (TMC-1) now hosts tricarbon monoxide (C3O), the first interstellar carbon chain molecule with oxygen. Its detection provides crucial data for understanding interstellar chemistry in cold clouds.

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Area of Science:

  • Astrochemistry
  • Interstellar Medium
  • Molecular Spectroscopy

Background:

  • Taurus Molecular Cloud One (TMC-1) is known for complex acetylenic molecules.
  • Previous studies focused on carbon-chain molecules and radicals, with unclear chemical pathways.
  • Gas-phase ion-molecule chemistry models explain some species but not all.

Purpose of the Study:

  • To report the detection of a new molecule, tricarbon monoxide (C3O), in TMC-1.
  • To investigate the implications of C3O's presence for interstellar chemical models.
  • To constrain theories of molecule formation in cold interstellar clouds.

Main Methods:

  • Detection of tricarbon monoxide (C3O) in TMC-1.
  • Analysis of the pure rotational spectrum of C3O, recently studied in the laboratory.
  • Comparison of observed abundances with existing galactochemical models.

Main Results:

  • Tricarbon monoxide (C3O) has been detected in the cold dark interstellar cloud TMC-1.
  • C3O is the first identified interstellar carbon chain molecule containing oxygen.
  • The observed abundance of C3O aligns well with current galactochemical models.

Conclusions:

  • The discovery of C3O offers a new constraint for chemical schemes in cold interstellar clouds.
  • The presence of oxygen in a carbon chain molecule challenges and refines existing formation theories.
  • The findings support the role of established galactochemistry in producing complex interstellar molecules.