Second Kepler Science Conference Nov. 4-8

10/17/13 Update: With the re-opening of the US government and the lifting of furloughs, we are happy to announce that the Second Kepler Science Conference will go on as planned November 4-8 with an opening reception on Nov 3, at NASA Ames.
(Kepler team)

Abstracts :

http://nexsci.caltech.edu/conferences/KeplerII/agenda.shtml

I'd like to highlight some notable ones:
 
Hit and miss: a slightly misaligned circumbinary planet KIC12351927b
 
The Confirmation of a Third Planet in the Kepler-47 Circumbinary System
 
The high multiplicity systems Gliese 667C and KOI 3158

Group 1 & 2 poster seems very interested too:

http://nexsci.caltech.edu/conferences/KeplerII/posters.shtml

KOI-3158 is this star. It's the 8th brightest KOI and (after Kepler-21) the second brightest which isn't listed as a false positive. The five planets are very tightly packed, with orbital periods ranging between 3.6 and 9.7 days. It has a Fe/H between -0.3 and -0.8 dex and has a high alpha/Fe ratio, indicating it is a thick disk (~6-10 Gyr old) star. The planets are about Mars-sized. Definitely an interesting system.

Meanwhile, " Two seasons of HARPS-N follow-up of Kepler planetary candidates " is up there! Really excited to see what HARPS-N has accomplished.

Shellface wrote:

"... Really excited to see what HARPS-N has accomplished..."

An example : http://nexsci.caltech.edu/conferences/KeplerII/abstracts_talks/Lovis.pdf

Also some disappointing results regarding exomoons there. Earthlike habitable exomoons may indeed be quite rare.

Any links to that exomoon one?

Edit: Found it. I did a quick calculation on that upper limit of 1.5 R_Ganymede and noted an equatorial radius of just under 4 thousand km, so a bit bigger than Mars. But yeah, probably not enough to make a difference.

some screenshots :

more :

 
French humour... (from Marseille)

After the BEER algorithm...

http://www.space.com/23465-planet-hunting-kepler-spacecraft-future.html

K2 mission for KEPLER ?

« ..The K2 mission would likely turn up many small exoplanets around small stars, including some in the habitable zone, Howell said. It could also spot a number of alien worlds around bright stars, which would make good targets for follow-up observation by NASA's James Webb Space Telescope, an $8.8 billion instrument due to launch in 2018.
But K2 wouldn't just be about exoplanets, Howell added. Kepler could also gather data about supernova explosions, star formation and solar-system bodies such as asteroids and comets, among other things… »

The KOI 3158 system :

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I want to know more about KOI-1422 and KOI-4036!


-M-

That last one looks pretty interesting too!

Ah, that's some better information. The planets orbiting KOI-3158 range from Mercury-size (0.38 R_⊕), through Mars-size (0.53 R_⊕), and up to… Super-Mars? Sub-Earth? sized. The star's B-V of 0.806 is indeed that of a K0 star, and it is again a kinematically old dwarf. The close proximity to MMRs for all five planets indicate that they all migrated/dynamically interacted to a large extent. The upper limits on the densities of 4/e and 5/f indicate that they have atmospheres, which seems very unlikely given their small size and high irradiance; maybe precision on the (lack of) TTVs is an issue here, or maybe their compositions are just a little odd.

KOI-3158 is a Hipparcos star (HIP 94931). Any of you Celestia-types wanna take a crack at this system? Because that would be awesome. Celestia also tells me that KOI-3158 is about a dozen light-years away from Kepler-42 (KOI-961), which is a remarkable happenstance.

Accounting putative mass estimates, the planets 4 and 5 in KOI 3158 seem having Mars-like composition.

Shellface wrote:

Ah, that's some better information. The planets orbiting KOI-3158 range from Mercury-size (0.38 R_⊕), through Mars-size (0.53 R_⊕), and up to… Super-Mars? Sub-Earth? sized. The star's B-V of 0.806 is indeed that of a K0 star, and it is again a kinematically old dwarf. The close proximity to MMRs for all five planets indicate that they all migrated/dynamically interacted to a large extent. The upper limits on the densities of 4/e and 5/f indicate that they have atmospheres, which seems very unlikely given their small size and high irradiance; maybe precision on the (lack of) TTVs is an issue here, or maybe their compositions are just a little odd.

KOI-3158 is a Hipparcos star (HIP 94931). Any of you Celestia-types wanna take a crack at this system? Because that would be awesome. Celestia also tells me that KOI-3158 is about a dozen light-years away from Kepler-42 (KOI-961), which is a remarkable happenstance.

There was a guy who was doing regular updates to the extrasolar planet data files for the data folder for a long while, but he quit earlier this year, citing dead -- literally dead -- development of the program, among other issues, including diminishing return for the effort he was putting in.

The third planet of Kepler-47 ("middle")

More exotic :

Edasich wrote:

Accounting putative mass estimates, the planets 4 and 5 in KOI 3158 seem having Mars-like composition.

Ah, that is true; I was using Earth and Venus densities as a model. Though the values are still upper limits, if a "sensible" composition is true, then hopefully not too much more accurate data would be necessary to get a detection of TTVs (TESS? Some other really really high-precision photometer? Anybody?)

PlutonianEmpire wrote:

There was a guy who was doing regular updates to the extrasolar planet data files for the data folder for a long while, but he quit earlier this year, citing dead -- literally dead -- development of the program, among other issues, including diminishing return for the effort he was putting in.

That is a shame. In my ramblings of being confused by how to edit the damn program (*shakes fist*) I managed to figure out how to add planets and stars (boy, did finding out that co-ordinates needed to be translated into a degree take a while), but you folks' texture work are beyond me.


@Kepler-47 - c has a density of 0.11 g/cm³? What're you, a Hot Jupiter?!
It's also interesting how the larger planet is in the middle. It's a bit short of Saturn-sized, which is consistent with the previously discovered circumbinary giant planets and continues to support a lack of Jupiters.

@KIC yadda yadda - a "slight" mutual inclination really does that much, huh? Hope someone's ready to observe in two thousand days!

Yeah, basically the dev community died out, several of the more active contributors left and the forum got overrun by low-quality Trekkie screenshots.

Currently the active community is at the Celestial Matters site, they're working on a fork called "Celestia.Sci". That seems to be where the high-quality Celestia-related material is these days.

Strange results for kepler 47 system c has only 2.3 earth mass? how they did imeasurement?Planet b is denser than most much smaller planets in range 2-3 earth radii despite being far outside significant mass loss zone only super earth kepler 20 c is denser but closer to host.

Strange super neptune in the middle High diversity in composition still surprise me

Led_Zep wrote:

More exotic :

New entry at EPE - Discovery paper submitted at ApJ:

http://exoplanet.eu/catalog/kic_12351927_(ab)_b/