Carbon (?) Recombination Lines in W49a (G43.2-0.0)
In 1971, Chaisson and Ball (henceforth referred to as CB) reported detection of an anomalous recombination line in the low-frequency wings of He94α and He85α in W49A. The strength of the line was about 3% of the nearby hydrogen alpha line, and the velocity with respect to the local standard of rest (LSR) was 60-70 km s-1, assuming the emitting species is carbon.
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- Chaisson, E.J. and Ball, J.A.: 1971, Astrophys. J. 109, pp. 95–501.Google Scholar