Meaning of the Abbreviation CCH in Graphic

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SUMMARY

The abbreviation "CCH" in the context of the graphic on phys.org refers to the ethynyl radical, which is a molecular species significant in the study of protostars. The graphic illustrates the integrated intensity distribution of CCH superimposed on a 0.8 mm dust continuum map, highlighting the infalling rotating envelope of the protostar L1527. This information is credited to Sakai et al. from RIKEN, emphasizing the importance of CCH in understanding the dynamics of protostellar environments.

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Sanborn Chase
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On 2/7/17 the following explanation of an accompanying graphic on phys.org read as follows:
"Integrated intensity distribution of CCH, superposed on the 0.8 mm dust continuum map. The infalling rotating envelope traced by CCH is broadened inward of the radius of about 150 au. Credit: Sakai et al. (RIKEN)
Read more at: https://phys.org/news/2017-02-protostar-strange-geometry.html#jCp"
The graphic represented the distribution of "CCH" in the protostar disk of L1527. Does CCH stand for carbon, chlorine, and hydrogen? Many thanks.
 
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Most excellent, Mr. Bandersnatch! Thanks very much.