CoRoT Results

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Re: CoRoT Results

Post by Edasich on 31st December 2012, 11:48 am

Transiting exoplanets from the CoRoT space mission XXV. CoRoT-25b and CoRoT-26b: two new low-mass hot Jupiters
ALMENARA J.-M., BOUCHY F., GAULME P., DELEUIL M., GANDOLFI D. & 41 additional authors
Dec. 29, 2012 | Astron. & Astrophys., submitted,

I see.

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Re: CoRoT Results

Post by tommi59 on 1st January 2013, 5:22 am

Corot 25 G0V star 1.08 sun mass and planet b mass 0.33 j ,radius 0.94 j period 4.86 d and 0.056 AU
Corot 26 G8(SUBGIANT)0.98sun mass.Planet b mass 0.577j ,radius 1.08j
period 4.2 d and 0.051 AU.

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Re: CoRoT Results

Post by jyril on 5th January 2013, 5:43 pm

Scientists losing hope of reviving French telescope

Looks like the higher lever of radiation over the South Atlantic Anomaly is the reason...

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Re: CoRoT Results

Post by Led_Zep on 5th January 2013, 11:30 pm

Sad
Sad day...

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Re: CoRoT Results

Post by Galzi on 24th February 2013, 3:08 pm

No new discoveries on this presentation:

http://www.mpe.mpg.de/events/ropacs-2012/Talks/Deeg.pdf

but an interesting news about the re-observation of the Corot-7 system: 3 planets detected in the RV data - apparently we have another "boring" packed system.

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Re: CoRoT Results

Post by Lazarus on 11th March 2013, 4:15 pm

11th CoRoT Week
http://www.iac.es/congreso/cw11/

Some interesting tidbits can be gleaned from the programme.

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Re: CoRoT Results

Post by Galzi on 25th March 2013, 3:31 pm

From the internal meeting on 8 February:

http://smsc.cnes.fr/COROT/SC/sc46/Minutes_SC46_V1.pdf

The last discoveries increase the number of confirmed and characterized planets to 32.
The papers are in preparation and the drafts should be ready at the time of the CW.
The PASTIS software is now operational. It is more powerful than BLENDER as it is a purely Bayesian approach and takes into account the Radial Velocity measurements, the high resolution images and the barycenter measurements when they exist.
The reobservation of CoRoT 7b shows a less active star, and a slightly shallower transit.

[...] The “megapaper” is almost ready and presents all the candidates detected in all the Exoplanet runs. The candidates have been analyzed with a single software. Their parameters are thus derived in an homogenous way. Their planetary likelihood is assessed through different flags and compared to results achieved by follow-up observations.
It counts 3440 candidates in the 19 first runs, (false detection being excluded)

[...] Claire M. informs the SC that the CoRoT data will very soon join the Planet Hunter site, after many efforts!


PowerPoint presentation on candidates properties and new planets:

http://smsc.cnes.fr/COROT/SC/sc46/SC46-DR2-MD.pdf

6 new planets :
- C27b HP : M=10MJup P=3.5d
- C28b,29b JC: M =0.5 MJ, P=5.2d & M=0.9MJ, P2.8d
- C30b,31b PB : M=1.1Mjup , P= 4.6d & M=2.9Mjup P=9.0d e=0.18
- C32 : a Jupiter like planet orbiting a hot star - confirmed thanks to RM

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Re: CoRoT Results

Post by pochimax on 26th March 2013, 5:17 am

So... the Corot week has ended without any announcement? Razz

It' s stupid. What' s the point in doing that?? Embarassed

C32, in the corot week the abstract says an oblated giant planet.

And what about Corot-9, there has been a lot of time since reobservation by corot and observations by Spitzer. Mad

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Re: CoRoT Results

Post by Daniel on 26th March 2013, 12:20 pm

Corot did Much less that I was expect till now,ever if we join Ground observatory that look for planetary Transit like Mearth and SuperWasp did a more impressive work

the only 2 systems till now that I find impressive in the Corot mission is the Corot-7 and Corot-9.Ever so about Corot-9 like Pochimax said,it's been Observed many time ever with Spitzer,and nothing great like exomoons, Rings have been Publish

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Re: CoRoT Results

Post by jyril on 26th March 2013, 12:49 pm

Yeah, I too feel a bit underwhelmed about the mission.

I guess one reason is that the spacecraft wasn't able to work at full capability for a long time due to the loss of half of the FOV.

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Re: CoRoT Results

Post by Stalker on 11th April 2013, 10:22 am

I'm looking for a catalog of CoRoT candidates, where can I find one?

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Re: CoRoT Results

Post by Galzi on 11th April 2013, 3:47 pm

Stalker wrote:I'm looking for a catalog of CoRoT candidates, where can I find one?

There isn't a catalog of all the Corot candidates available, although in the past a few papers discussing candidates detected in the first observation runs were published.

Apparently, from the reports of their internal meetings, they are preparing a "mega-paper" with all the candidates detected + follow-up results. Maybe that, like happened for Kepler, will spur other external detection teams to search for additional missing candidates with their own algorithms.

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Re: CoRoT Results

Post by Stalker on 11th April 2013, 4:21 pm

Thanks you Smile

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Re: CoRoT Results

Post by Led_Zep on 5th June 2013, 1:42 pm

http://arxiv.org/abs/1306.0578

CoRoT: harvest of the exoplanet program

CoRoT has acquired more than 163,000 light curves and detected about 500 planet candidates. A fraction of them (5%) are confirmed planets whose masses are independently measured. Main highlights of the CoRoT discoveries are: i) the variety of internal structures in close-in giant planets, ii) the characterisation of the first known transiting rocky planet, CoRoT-7 b, iii) multiple constraints on the formation, evolution, role of tides in planetary systems

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Re: CoRoT Results

Post by pochimax on 5th June 2013, 2:32 pm

27 monotransits... maybe interesting long period planets impossible to confirm due to lack of access to ground telescopes...

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Re: CoRoT Results

Post by Galzi on 15th June 2013, 5:46 am

Structure of Corot-7 system debated in two slide presentations from the 11th Corot Week:

http://www.iac.es/congreso/cw11/media/presentations/Haywood.pdf
http://www.iac.es/congreso/cw11/media/presentations/Hatzes.pdf

Different masses given for Corot-7b (5.12 and 6.75 Earth masses), non-zero eccentricity possible. Corot 7-c and 7-d appear to be confirmed.

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Re: CoRoT Results

Post by jyril on 25th June 2013, 3:31 pm

Sky & Telescope: COROT mission officially ends

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Re: CoRoT Results

Post by Lazarus on 25th June 2013, 3:56 pm

Sad

Sad to see it go, not a good year for space transits.

Still, the data archive should be a good hunting ground for new discoveries.

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Re: CoRoT Results

Post by Edasich on 10th July 2013, 3:36 am

Corot-25 and 26 b are published, but no preprint so far!
 
Transiting exoplanets from the CoRoT space mission XXIV. CoRoT-25b and CoRoT-26b: two low-density giant planets
 
We report the discovery of two transiting exoplanets, CoRoT-25b and CoRoT-26b, both of low density, one of which is in the Saturn mass-regime. For each star, ground-based complementary observations through optical photometry and radial velocity measurements secured the planetary nature of the transiting body and allowed us to fully characterize them. For CoRoT-25b we found a planetary mass of 0.27 ± 0.04 MJup, a radius of 1.08-0.10+0.3 RJup and hence a mean density of 0.15-0.06+0.15 g cm-3. The planet orbits an F9 main-sequence star in a 4.86-day period, that has a V magnitude of 15.0, solar metallicity, and an age of 4.5-2.0+1.8-Gyr. CoRoT-26b orbits a slightly evolved G5 star of 9.06 ± 1.5-Gyr age in a 4.20-day period that hassolar metallicity and a V magnitude of 15.8. With a mass of 0.52 ± 0.05 MJup, a radius of 1.26-0.07+0.13 RJup, and a mean density of 0.28-0.07+0.09 g cm-3, it belongs to the low-mass hot-Jupiter population. Planetary evolution models allowed us to estimate a core mass of a few tens of Earth mass for the two planets with heavy-element mass fractions of 0.52-0.15+0.08 and 0.26-0.08+0.05, respectively, assuming that a small fraction of the incoming flux is dissipated at the center of the planet. In addition, these models indicate that CoRoT-26b is anomalously large compared with what standard models could account for, indicating that dissipation from stellar heating could cause this size.

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Re: CoRoT Results

Post by tommi59 on 10th July 2013, 7:57 am

I mentioned these planet before now paper but density for 25b 0.15g/cm3 is incredibly low

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Re: CoRoT Results

Post by Stalker on 12th July 2013, 1:18 am

Found this:
http://www.iac.es/congreso/cw11/media/presentations/jcabrera_newplanets.pdf

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Re: CoRoT Results

Post by Led_Zep on 12th July 2013, 2:52 am

"CoRoT-32b"
"the most exciting system of today"

Found :
http://www.iac.es/congreso/cw11/pages/meeting/view-abstract.php?aid=21

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Re: CoRoT Results

Post by Stalker on 12th July 2013, 2:57 am

Led_Zep wrote:"CoRoT-32b"
"the most exciting system of today"

??


http://www.iac.es/congreso/cw11/pages/meeting/view-abstract.php?aid=21
CoRoT-32b: a bloated planet transiting a rapidly rotating gamma Dor star
We announce the discovery of CoRoT-32b, which was verified through spectroscopic observations performed during a transit that detected the Rossiter-McLaughlin effect with the Doppler imaging technique. More details will be announced at the talk.
http://www.iac.es/congreso/cw11/media/posters/titz.pdf

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Re: CoRoT Results

Post by tommi59 on 12th July 2013, 2:58 am

Merci.Couple jupiter size planets but how big is difference(variety) in density between them ,corot 25b -0.15g/cm3 ,27b-12.6g/cm3.Anyway corot mission is finish and only one small planet 7b found nothing really to cry for

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Re: CoRoT Results

Post by Shellface on 13th July 2013, 11:15 am

…Huh. That's the first Gamma Doradus variable planet host, isn't it? I think the instability strip is located at A through early F, and given that the star rotates so fast that they couldn't follow it up the star is probably towards the earlier end.

Such a long period, too! The 3-4-day Hot Jupiters really seem to be missing at early spectral types. I wonder why? If they're a function of semimajor axis then they should have shorter periods around more massive stars, but those apparently aren't very common either. Maybe the stellar radius is important too?

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Re: CoRoT Results

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