JWST unveils the chemical make-up of an exoplanet.

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JWST unveils the chemical make-up of an exoplanet.

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Post by Gmetric »


The analysis and results were a surprise because their predictions of the chemical composition for WASP-39b included sulfur, which was expected to be locked up in hydrogen sulphide. But, the JWST results also showed sulfur dioxide in the atmosphere, suggesting that photochemistry may be responsible. Photochemistry is where high-energy photons interact with water molecules in the atmosphere creating the photodissociation of water. This photodissociation liberates hydroxide and atomic hydrogen. The next steps are where the liberated hydrogen and hydroxide react with hydrogen sulfide to produce sulfur dioxide. Photochemistry is essential to processes on earth which are key to life. The data is excellent and paves the way for further insight into planetary evolution from disk dust. It also provides deeper insights into atmospheric chemical processes on cooler exoplanets where photochemistry may be an important contributing factor for life. I'm looking forward to the analysis of data from the Trappist-1 system.

https://phys.org/news/2022-11-james-web ... overs.html
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Re: JWST unveils the chemical make-up of an exoplanet.

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Post by helicon »


Nice article and pretty instructive - thanks for the share.
-Michael
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Re: JWST unveils the chemical make-up of an exoplanet.

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Post by Greenman »


Hi Arry,

Missed this one somehow - thanks for the link.
Cheers,

Tony.

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Re: JWST unveils the chemical make-up of an exoplanet.

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Post by Gmetric »


More info on this from Dr. Becky.

Arry (Bortle 7 area)

Telescopes: Sky-Watcher ED72II, Sky-Watcher PDS130, Sky-Explorer SN F4 200mm astrograph and Vixen F11.1 90mm
Cameras: Nikon D5300 modded, Canon Kiss X8i modded, Cooled Canon kiss X4 modded, Atik 16IC and 383 colour, ASI120MC, QHY5LII
Mount: Sky-Explorer HEQ 5 belt driven
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Re: JWST unveils the chemical make-up of an exoplanet.

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Post by Gmetric »


A follow-up conversation from Dr. Becky with Dr. Jake Tailor about the JWST and exoplanets.

Arry (Bortle 7 area)

Telescopes: Sky-Watcher ED72II, Sky-Watcher PDS130, Sky-Explorer SN F4 200mm astrograph and Vixen F11.1 90mm
Cameras: Nikon D5300 modded, Canon Kiss X8i modded, Cooled Canon kiss X4 modded, Atik 16IC and 383 colour, ASI120MC, QHY5LII
Mount: Sky-Explorer HEQ 5 belt driven
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