Publication Abstracts
Tucker et al. 1974
Tucker, K.D., M.L. Kutner, and P. Thaddeus, 1974: The ethynyl radical C2H — A new interstellar molecule. Astrophys. J., 193, L115-L119, doi:10.1086/181646.
Four new interstellar lines have been detected in a number of galactic sources with derived rest frequencies of 87,317.05, 87,328.70, 87,402.10, and 87,407.23 MHz. Based on laboratory ESR data in the solid state, these lines have been positively identified as hyperfine components of the N = 1 → 0 transition of the ethynyl radical C2H. The astronomical observations yield precise values for the C2H rotation, spin-doubling, and hyperiine constants, namely, 2B0-4D0 = 87,348.74±0.19 MHz, γ = -62.57±0.13 MHz, b = 40.24±0.43 MHz, and c = 12.23±0.35 MHz. Ethynyl is apparently one of the most abundant interstellar polyatomic molecules with column densities in the best sources ∼1015 cm-2. In the Orion Nebula the north-south extent of C2H emission is nearly a quarter of a degree.
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BibTeX Citation
@article{tu09100s,
author={Tucker, K. D. and Kutner, M. L. and Thaddeus, P.},
title={The ethynyl radical C2H — A new interstellar molecule},
year={1974},
journal={Astrophys. J.},
volume={193},
pages={L115--L119},
doi={10.1086/181646},
}
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RIS Citation
TY - JOUR ID - tu09100s AU - Tucker, K. D. AU - Kutner, M. L. AU - Thaddeus, P. PY - 1974 TI - The ethynyl radical C2H — A new interstellar molecule JA - Astrophys. J. VL - 193 SP - L115 EP - L119 DO - 10.1086/181646 ER -
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