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Methyl-Cation : CH3+ [Berné, Martin-Drumel, Schroetter et al. Nature, 2023] Models of the Methyl-Cation, a brown sphere (carbon) with three red spheres attached with rods (hydrogen). Spectra from the Orion Bar, a line graph of flux density vs wavelength in microns. Blue line on top is the data, black lone on bottom is a model. A flat line has many spikes, with a significant spike between 7.1 and 7.2 microns. The model almost but not completely matches the data. Spectroscopist rescue : Marie-Aline Martin, B. Gans, U. Jacovella, O. Asvany, S. Thornwith, S. Schlemmer, L. Coudert, notably.

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Methyl-Cation : CH3+ [Berné, Martin-Drumel, Schroetter et al. Nature, 2023] Models of the Methyl-Cation, a brown sphere (carbon) with three red spheres attached with rods (hydrogen). Spectra from the Orion Bar, a line graph of flux density vs wavelength in microns. Blue line on top is the data, black lone on bottom is a model. A flat line has many spikes, with a significant spike between 7.1 and 7.2 microns. The model almost but not completely matches the data. Spectroscopist rescue : Marie-Aline Martin, B. Gans, U. Jacovella, O. Asvany, S. Thornwith, S. Schlemmer, L. Coudert, notably.
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Kelly Lepo (kellylepo@astrodon.social)'s status on Friday, 15-Sep-2023 02:19:19 JST Kelly Lepo
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A neat interdisciplinary science story from Olivier Berne and the PDRs4All project.
They saw this forrest of emission lines in their observations of the Orion Bar, a star forming region. After talking with some chemists, they found it was from the Methyl-Cation (CH3+).
Chemists had been studying it for years, but didn't have a great spectrum. The JWST data is better than anything that could be measured on Earth. With the new data, they were able to make a much better model.
#JWSTYearOne

In conversation about a year ago from astrodon.social permalink