Proxima Centauri

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Re: Proxima Centauri

Post by Sirius_Alpha on 29th September 2016, 9:39 pm

The Pale Green Dot: A Method to Characterize Proxima Centauri b using Exo-Aurorae
https://arxiv.org/abs/1609.09075

The Space Weather of Proxima Centauri b
https://arxiv.org/abs/1609.09076

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Re: Proxima Centauri

Post by Led_Zep on 29th September 2016, 10:46 pm

http://www.scientificamerican.com/article/how-to-see-proxima-b/

How to See Proxima b

(Scientific American.com)
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Re: Proxima Centauri

Post by Lazarus on 30th September 2016, 6:47 pm

Sirius_Alpha wrote:No Conclusive Evidence for Transits of Proxima b in MOST photometry
http://arxiv.org/abs/1609.08718

Non-detection, but can't be sure it doesn't transit.
The flares look like they're going to be a real problem for this one, both in terms of unambiguously determining whether transits are occurring, and in terms of prospects for habitability.
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Re: Proxima Centauri

Post by Led_Zep on 1st October 2016, 3:45 am

Twitter :

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Re: Proxima Centauri

Post by Led_Zep on 7th October 2016, 10:14 am

Why not an ocean planet ?

https://arxiv.org/abs/1609.09757
Possible Internal Structures and Compositions of Proxima Centauri b
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Re: Proxima Centauri

Post by tommi59 on 7th October 2016, 4:59 pm

We should wait until transit is definitely confirmed or ruled out nevertheless ocean planet is in my opinion unlikely due to proximity to the host star
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Re: Proxima Centauri

Post by Lazarus on 14th November 2016, 2:59 pm

Another application of measuring Proxima's radial velocity: it now looks like it is a bound companion of the Alpha Centauri system with a high degree of probability, which is in contrast to previous results which used less precise radial velocity data.

Kervella & Thévenin "Proxima's orbit around Alpha Centauri"
https://arxiv.org/abs/1611.03495
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Re: Proxima Centauri

Post by Sirius_Alpha on 30th November 2016, 9:25 pm

Upper limits for Mass and Radius of objects around Proxima Cen from SPHERE/VLT
https://arxiv.org/abs/1611.10362

Doesn't look like this covers any parameter space that hasn't already been ruled out by other methods.

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Re: Proxima Centauri

Post by Sirius_Alpha on 12th December 2016, 10:43 pm

Proxima reloaded: Unravelling the stellar noise in radial velocities
https://arxiv.org/abs/1612.03786

Different analysis of data, recovery of Proxima Centauri b. No evidence for a second planet.

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Re: Proxima Centauri

Post by Led_Zep on 22nd December 2016, 6:33 pm

Lazarus wrote:Another application of measuring Proxima's radial velocity: it now looks like it is a bound companion of the Alpha Centauri system with a high degree of probability, which is in contrast to previous results which used less precise radial velocity data.

Kervella & Thévenin "Proxima's orbit around Alpha Centauri"
https://arxiv.org/abs/1611.03495

http://www.eso.org/public/france/announcements/ann16089/

ESO press release :

Orbit of Proxima Centauri Determined After 100 Years
Strongest evidence yet that Proxima Centauri orbits Alpha Centauri pair
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Re: Proxima Centauri

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