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Corey S Powell
@coreyspowell@mastodon.social  ·  activity timestamp 6 days ago

Does Trappist-1e have a substantial atmosphere that allow habitable conditions?

A simple yes-no answer would be great. Unfortunately, this graph is what we get -- a lot of uncertainty, but it is still a HUGE advance.

https://iopscience.iop.org/article/10.3847/2041-8213/adf62e #science #astronomy#astrodon

JWST NIRSpec PRISM transmission spectra compared with modeled atmospheric scenarios. The x-axis shows wavelengths in microns, while the y-axis shows the transit depth in parts per million. Each of the individual visits (translucent colored circles with error bars), the combination of visits 1 and 2 (gray circles with error bars), and the stellar-contamination-corrected four-visit spectrum from N. Espinoza et al.
JWST NIRSpec PRISM transmission spectra compared with modeled atmospheric scenarios. The x-axis shows wavelengths in microns, while the y-axis shows the transit depth in parts per million. Each of the individual visits (translucent colored circles with error bars), the combination of visits 1 and 2 (gray circles with error bars), and the stellar-contamination-corrected four-visit spectrum from N. Espinoza et al.
JWST NIRSpec PRISM transmission spectra compared with modeled atmospheric scenarios. The x-axis shows wavelengths in microns, while the y-axis shows the transit depth in parts per million. Each of the individual visits (translucent colored circles with error bars), the combination of visits 1 and 2 (gray circles with error bars), and the stellar-contamination-corrected four-visit spectrum from N. Espinoza et al.
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Corey S Powell
@coreyspowell@mastodon.social replied  ·  activity timestamp 6 days ago

The harsh reality is that it is really hard to study the atmosphere on a planet 400 trillion kilometers from Earth. That's, uh, a billion times as far as the Moon.

The amazing thing is that we're getting close. The answers are almost in reach!

http://www.trappist.one/#about #science #nature #tech

This is an artist’s impression of the TRAPPIST-1 system, showcasing all seven planets in various phases. When a planet transits across the disk of the red dwarf host star, as two of the planets here are shown to do, it creates a dip in the star’s light that can be detected from Earth. Credit: NASA
This is an artist’s impression of the TRAPPIST-1 system, showcasing all seven planets in various phases. When a planet transits across the disk of the red dwarf host star, as two of the planets here are shown to do, it creates a dip in the star’s light that can be detected from Earth. Credit: NASA
This is an artist’s impression of the TRAPPIST-1 system, showcasing all seven planets in various phases. When a planet transits across the disk of the red dwarf host star, as two of the planets here are shown to do, it creates a dip in the star’s light that can be detected from Earth. Credit: NASA
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