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 Post subject: Re: News
PostPosted: Wed, 04-06-14, 0:23 GMT 
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Two planets around Kapteyn's star : a cold and a temperate super-Earth orbiting the nearest halo red-dwarf
Anglada-Escudé et al.

A super-Earth-mass planet in the circumstellar habitable zone and a more massive planet further out. This is the nearest example of an exoplanet in the habitable zone of its star.


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 Post subject: Re: News
PostPosted: Wed, 04-06-14, 17:49 GMT 
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Hungry4info wrote:
This is the nearest example of an exoplanet in the habitable zone of its star.

That's somewhat amusing given the extragalactic origin of Kapteyn's star.

IIRC this is the first example of a planetary system from a dwarf galaxy, good to know that such places are not necessarily devoid of planets.


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 Post subject: Re: Scientific Papers
PostPosted: Mon, 30-06-14, 0:34 GMT 
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Gliese 832c
http://www.sci-news.com/astronomy/scien ... 02029.html

paper pre-print
http://arxiv.org/abs/1406.5587

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 Post subject: Re: News
PostPosted: Wed, 02-07-14, 8:27 GMT 
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The GAPS programme with HARPS-N@TNG IV: A planetary system around XO-2S
Desidera, et al.

A pair of Jovian planets orbiting the second member of the XO-2 stellar system. XO-2 now represents the first confirmed case of a wide binary with planets adorning both stars where one planet transits.


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 Post subject: Re: News
PostPosted: Thu, 03-07-14, 18:32 GMT 
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Gliese 581 d may not exist: http://www.newscientist.com/article/dn2 ... r-all.html


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 Post subject: Re: News
PostPosted: Thu, 03-07-14, 18:45 GMT 
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:mrgreen: :wall: :mrgreen: :wall:

boo hoo hoo
i might have to modify Gliese 581

" so long and thanks for all the fish"
Image
?? Mayby ?????

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 Post subject: Re: News
PostPosted: Sat, 05-07-14, 6:00 GMT 
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I think that study also effectively ruled 'g' completely out for sure as well, correct? Or was that already done way earlier?


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 Post subject: Re: News
PostPosted: Sat, 05-07-14, 6:20 GMT 
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for any interested and do not already know of this
https://github.com/OpenExoplanetCatalog ... catalogue/
the catalog is posted and are in xml format

with a few python scripts that can be hacked to output a ssc

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 Post subject: Re: News
PostPosted: Sat, 05-07-14, 7:41 GMT 
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Problem with the Open Exoplanets Catalog is that it does not supply enough of the parameters to model the orbit orientation. Of the three orbital Euler angles ω (argument of periastron), i (inclination) and Ω (longitude of node), it only provides the inclination. At a minimum I'd want the data source to supply both i and ω: the value of Ω is not known in the large majority of cases so you can probably get away with not having it (it represents the rotation around the line-of-sight, which most detection methods are not sensitive towards, though in some cases relative values are known between planets in the same system due to dynamics, etc.). This is a pity because the Open Exoplanets Catalog is the only exoplanet catalogue I am aware of that also includes information about binary/multiple host star systems.

Of the various exoplanet catalogues, the ones I'd consider most suitable for doing a Celestia files conversion on are the NASA Exoplanet Archive (no Ω but has a nice API), and the Exoplanet Orbit Database. The Extrasolar Planets Encyclopaedia may also work but I've noticed some rather questionable decisions taken in what to include in the data.


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 Post subject: Re: News
PostPosted: Mon, 21-07-14, 18:55 GMT 
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Discovery of a Transiting Planet Near the Snow-Line
Kipping, et al.

A Uranus-sized planet at Kepler-421 reported. The planet may have actually formed here at this distance.


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 Post subject: Re: News
PostPosted: Sat, 30-08-14, 6:44 GMT 
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Triple Microlens OGLE-2008-BLG-092L: Binary Stellar System with a Circumprimary Uranus-type Planet
Poleski, et al.

A extrasolar planet analogous to the ice giants in our solar system (a low-mass planet several times further from the star than the ice line) is found in a binary star system.

The NASA-UC-UH Eta-Earth Program: IV. A Low-mass Planet Orbiting an M Dwarf 3.6 PC from Earth
Howard, et al.

A super-Earth is reported orbiting GJ 15A / Groombridge 34A / GX And. This planet joins a short list of very nearby extrasolar planets.


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