Mini-Neptunes in NGC 6811

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Mini-Neptunes in NGC 6811

Post by Lazarus on 26th June 2013, 2:57 pm

Was wondering if Kepler would spot any planets in the open clusters in its field-of-view...

Space.com: 'Mini-Neptune' Alien Planets in Star Cluster Surprise Scientists
http://www.space.com/21729-mini-neptune-alien-planets-discovered.html

Kepler-66b and Kepler-67b orbit stars in the open cluster NGC 6811.
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Re: Mini-Neptunes in NGC 6811

Post by Edasich on 26th June 2013, 3:55 pm

Nature article:

http://www.nature.com/nature/journal/vaop/ncurrent/full/nature12279.html

Plus a PDF with supplementary data:

http://www.nature.com/nature/journal/vaop/ncurrent/extref/nature12279-s1.pdf
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Re: Mini-Neptunes in NGC 6811

Post by Lazarus on 26th June 2013, 4:07 pm

Thanks for finding those. Especially interesting point from the abstract about the similarities between cluster and field star planetary systems:
This demonstrates that small planets can form and survive in a dense cluster environment, and implies that the frequency and properties of planets in open clusters are consistent with those of planets around field stars in the Galaxy.
Also, is it just me or is the discoveries table on the Kepler website dead?
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Re: Mini-Neptunes in NGC 6811

Post by Stalker on 27th June 2013, 2:22 am

Has someone the data about this two planets? like a screenshot of the tables from Nature.

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Re: Mini-Neptunes in NGC 6811

Post by tommi59 on 27th June 2013, 4:17 am

Planets have 15 and 17 days period are too hot ,but the views from them is rather magnificent and unforgettable
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Re: Mini-Neptunes in NGC 6811

Post by Stalker on 27th June 2013, 10:48 am

http://exoplanet.eu/catalog/kepler-66_b/
http://exoplanet.eu/catalog/kepler-67_b/

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Re: Mini-Neptunes in NGC 6811

Post by Sirius_Alpha on 27th June 2013, 11:55 am

Thanks, was waiting on actual orbit parameters for these planets. Smile

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Re: Mini-Neptunes in NGC 6811

Post by Lazarus on 27th June 2013, 1:52 pm

I take it the masses quoted at EPE are upper limits of some kind?
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Re: Mini-Neptunes in NGC 6811

Post by Stalker on 27th June 2013, 1:57 pm

Yes i think.

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Re: Mini-Neptunes in NGC 6811

Post by Lazarus on 24th July 2013, 2:13 am

Now on arXiv:

The same frequency of planets inside and outside open clusters of stars
http://arxiv.org/abs/1307.5842
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