Ross 128 - ~Earth-mass planet at inner edge of HZ

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Ross 128 - ~Earth-mass planet at inner edge of HZ

Post by Sirius_Alpha on 15th November 2017, 7:26 am

HARPS has done it again.

Closest Temperate World Orbiting Quiet Star Discovered
https://www.eso.org/public/news/eso1736/

~1.4 Earth-masses. ~1.3 x Earth's insolation.

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Re: Ross 128 - ~Earth-mass planet at inner edge of HZ

Post by Led_Zep on 15th November 2017, 9:09 am

GREAT ! cheers
A new target for ALMA, JWST, ect...

https://www.eso.org/public/archives/releases/sciencepapers/eso1736/eso1736a.pdf

A temperate exo-Earth around a quiet M dwarf at 3.4 parsecs
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Re: Ross 128 - ~Earth-mass planet at inner edge of HZ

Post by Lazarus on 16th November 2017, 5:15 am

JWST is probably not going to be so useful for this one. From the paper:
Transit spectroscopy being excluded, we turn to the potential of measuring phase curves. Snellen et al. (2017) estimated that five days of JWST observations could detect the putative atmosphere of Proxima Cen b (see also Kreidberg & Loeb 2016). Ross 128 b is not as favorable however, since its host star is 1.4 times larger and, at near- or mid-infrared wavelengths, 3 − 4 times fainter than Proxima Centauri. Similar JWST observations for Ross 128 b are thus likely to be prohibitively expensive.

E-ELT appears to be the way forward here.
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Re: Ross 128 - ~Earth-mass planet at inner edge of HZ

Post by Lazarus on 17th November 2017, 4:26 am

Andrew LePage has done a Habitable Planet Reality Check article for Ross 128 b on Drew Ex Machina.
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Re: Ross 128 - ~Earth-mass planet at inner edge of HZ

Post by Stalker on 17th November 2017, 7:52 am

It's still an UV Ceti flaring star :p

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