Carbon dioxide on HD 189733b

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Carbon dioxide on HD 189733b

Post by Lazarus on 9th December 2008, 4:48 pm

Greenhouse gases on top of the hellishly high levels of stellar radiation... NASA Hubble Space Telescope Finds Carbon Dioxide on an Extrasolar Planet

So of the "big four" molecules of interest in finding Earth-clones, HD 189733b has methane, carbon dioxide and water. What's next, an oxygen atmosphere and a full-fledged ecology of weird hot Jupiter beasties floating around in the alkali metal haze?


Last edited by Lazarus on 12th December 2008, 9:00 am; edited 1 time in total
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Re: Carbon dioxide on HD 189733b

Post by Sirius_Alpha on 9th December 2008, 8:34 pm

Very exciting discovery! What about HD 209458 b? CO_2 there perhaps?
The press release also reports the discovery of CO.

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Re: Carbon dioxide on HD 189733b

Post by Sirius_Alpha on 10th December 2008, 9:06 pm

ArXiv paper.
http://arxiv.org/abs/0812.1844

Also, I edited the post title to say "HD 189733 b", as opposed to just "HD 189733". I hope you don't mind.

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Re: Carbon dioxide on HD 189733b

Post by Lazarus on 12th December 2008, 8:49 am

Also, I edited the post title to say "HD 189733 b", as opposed to just "HD 189733". I hope you don't mind.
I AM SO OFFENDED I DON'T KNOW WHAT TO THINK I HATE YOU ALL AARGH.

just kidding.

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Re: Carbon dioxide on HD 189733b

Post by Sirius_Alpha on 12th December 2008, 8:56 am

Lazarus wrote:I AM SO OFFENDED I DON'T KNOW WHAT TO THINK I HATE YOU ALL AARGH.
Laughing Laughing Laughing

The paper suggests that there may also be a detection of trace amounts of ammonia, ethane, and acetylene in the Spitzer data, but including those does not significantly improve the data. Either better data, or data covering a broader wavelength, will be needed to confirm.

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