Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999stin...0033522c&link_type=abstract
Central Laser Facility, Rutherford Appleton Laboratory, p. 126
Astronomy and Astrophysics
Astronomy
Molecular Clouds, Interstellar Matter, Carbon, Aromatic Compounds, Gas Density, Sun, Radicals, Hydrocarbons, High Vacuum, Ground State, Fullerenes, Coefficients, Atoms, Astronomy
Scientific paper
Ground state atomic carbon, C (2p(sup 2)(3)Pj), has been detected in a wide range of astronomical environments, and is particularly y abundant in dense interstellar clouds (ISCs). Dense by interstellar standards, where the average gas density is approx. 1/cc, these clouds correspond to the laboratory equivalent of an ultra high vacuum, with gas densities of the order of 104/cc. They are also extremely cold, with temperatures in the range 10 - 50 K. However, owing to their great size, they may contain typically the equivalent of 10 - 100 times the mass of our Sun, and it is within these clouds that the richest variety of interstellar molecules has been observed, including many carbon-containing radicals. The largest confirmed interstellar molecule is HC(11)N, but it is hit, My probable that much larger Species Such as polyaromatic hydrocarbons (PAHs) and fullerenes exist as well.
Chastaing Delphine
James Philip L.
Sims Ian R.
Smith Ian W. M.
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