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Methyl-Cation : CHs+ Ro-vibrational line assignment [Changala et al. A&A submitted] Collaboration with spectroscopists : P. Bryan Changala, Ning L. Chen, Hai L. Le, Bérenger Gans, Kim Steenbakkers, Thomas Salomon, Luis Bonah, Marie-Aline Martin-Drumel, Ugo Jacovella, Séverine Boyé-Péronne, Christian Alcaraz, Oskar Asvany, Sandra Briinken, Sven Thorwirth, Stephan Schlemmer — JWST spectrum [Changala et al. A&A Submitted)] A spectrum, a graph of intensity vs wavenumber. Black line is JWST data, red line is a model. A line has many spikes, including a large spike with a wavenumber between 1390 and 1400. The model is a reflected version of the data. They match very well. New laboratory measurements to support these assignments : - Infrared leak-out spectroscopy: Institut des Sciences Moléculaires d’Orsay - Rotationally-resolved photoelectron spectroscopy: FELIX and Cologne

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Methyl-Cation : CHs+ Ro-vibrational line assignment [Changala et al. A&A submitted] Collaboration with spectroscopists : P. Bryan Changala, Ning L. Chen, Hai L. Le, Bérenger Gans, Kim Steenbakkers, Thomas Salomon, Luis Bonah, Marie-Aline Martin-Drumel, Ugo Jacovella, Séverine Boyé-Péronne, Christian Alcaraz, Oskar Asvany, Sandra Briinken, Sven Thorwirth, Stephan Schlemmer — JWST spectrum [Changala et al. A&A Submitted)] A spectrum, a graph of intensity vs wavenumber. Black line is JWST data, red line is a model. A line has many spikes, including a large spike with a wavenumber between 1390 and 1400. The model is a reflected version of the data. They match very well. New laboratory measurements to support these assignments : - Infrared leak-out spectroscopy: Institut des Sciences Moléculaires d’Orsay - Rotationally-resolved photoelectron spectroscopy: FELIX and Cologne
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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