CoRoT Results

I would expect at least some planets to migrate inward with planet-planet scattering to have fairly well aligned orbits due to random chance. It would be a question of whether we see more well-aligned planets around stars T > 6250 K than would be explained by chance.

From the ESA Bulletin of May 2012:

http://esamultimedia.esa.int/multimedia/publications/ESA-Bulletin-150/

Quote :

page 77: "Field LRa01 (first observed in 2007) was re-observed last winter. The first detected rocky planet, COROT-7b, was detected with a much higher signal-to-noise this time, since fortunately its solar-type star is about an order of magnitude less active than four years ago. Apparently this star is going into an activity minimum similar to that of our own Sun every 11 years. The planet was also detected in the simultaneous radial velocity programme carried out at ESO in Chile and it is hoped that detailed analysis of this data will confirm the suspected planets COROT-7c and 7d."

Quote :

"The 'official' exoplanet count of COROT is 26 but with around another 10 objects under detailed study and follow-up. A further 50 objects are on the target list for follow-up when resources become available."

Proposal for a 3 year extension of the COROT mission: 2013-2015

http://smsc.cnes.fr/COROT/PDF/CoRoT_III_programme.pdf

Interesting to see that the Planet Hunter website this year should receive COROT lightcurves in addition to Kepler's ones. After so much secrecy and very little infos, maybe the COROT team is choosing a new public relations approach.

Very interesting information, thanks

It would be interesting to see the CoRoT lightcurves croudsourced a bit more, but they're noisier than the Kepler data. I'm not sure how well it would work.

I hope we can measure more precisely mass of these planets

Paper of COROT-21b, an apparently doomed hot Jupiter around a faint sub-giant

Quote :

CoRoT-21, a F8IV star of magnitude V=16 mag, was observed by the space telescope CoRoT during the Long Run 01 (LRa01) in the first winter field (constellation Monoceros) from October 2007 to March 2008. Transits were discovered during the light curve processing. Radial velocity follow-up observations, however, were performed mainly by the 10-m Keck telescope in January 2010.
The companion CoRoT-21b is a Jupiter-like planet of 2.26±0.33 Jupiter masses and 1.30±0.14 Jupiter radii in an circular orbit of semimajor axis 0.0417±0.0011 AU and an orbital period of 2.72474±0.00014 days. The planetary bulk density is (1.36±0.48)·103 kg m−3, very similar to the bulk density of Jupiter, and follows an M1/3 −R relation like Jupiter. The F8IV star is a sub-giant star of 1.29±0.09 solar masses and 1.95±0.2 solar radii. The star and the planet exchange extreme tidal forces that will lead to orbital decay and extreme spin-up of the stellar rotation within 800 Myr if the stellar dissipation is Q∗/k2∗ ≤ 107.

Paper about COROT-16b, a bloated eccentric hot jupiter

Quote :

Aims. We report the discovery of CoRoT-16b, a low density hot jupiter that orbits a faint G5V star (mV = 15.63) in 5.3523 ± 0.0002 days with slight eccentricity. A fit of the data with no a priori assumptions on the orbit leads to an eccentricity of 0.33 ± 0.1. We discuss this value and also derive the mass and radius of the planet.
Methods. We analyse the photometric transit curve of CoRoT-16 given by the CoRoT satellite, and radial velocity data from the HARPS and HIRES spectrometers. A combined analysis using a Markov chain Monte Carlo algorithm is used to get the system parameters.
Results. CoRoT-16b is a 0.535 −0.083/+0.085 MJ, 1.17 −0.14/+0.16 RJ hot Jupiter with a density of 0.44 −0.14/+0.21 g cm−3. Despite its short orbital distance (0.0618 ± 0.0015 AU) and the age of the parent star (6.73 ± 2.8 Gyr), the planet orbit exhibits significantly non-zero eccentricity.
This is very uncommon for this type of objects as tidal effects tend to circularise the orbit. This value is discussed taking into account the characteristics of the star and the observation accuracy.

The only papers still missing regards COROT-22b and the COROT 24 system.

Claire Moutou, Corot Project Investigator, at the first Kepler science conference on 5 December 2011:

http://connect.arc.nasa.gov/p5ntjd94def/

Notable the huge follow-up effort, the large majority of candidates around very faint stars, with a number of unsolved cases (hot stars, fast rotators, no RV signal detected).
Overall 545 candidates selected for follow-up, 300 solved, only 25 of them confirmed as planets. 160 candidates waiting for follow-up. They apparently aren't validating their candidates through statistical arguments like Kepler's scientists.

Interesting hints about Corot 24 system, masses of the planets (3.7 and 5 Earth radii) tentatively measured around 40 Earth masses; a third outer non-transiting planet inferred from a long-period trend in the RV data.

They're unable to explain the dearth of Neptunes detected so far, apparently in tests they recovered 80% of fake Neptune transits injected in real data. On the other hand they confirm an under-detection of transiting Super-Earths, with only 35% of transits recovered by algortihms. Maybe the extra-activity of Solar-like stars is affecting the detection performance of the mission, like happened to Kepler.

5 earth radius planet corot 24 c with density around 1.8 g/cm3 not bad and much denser planet b around 4.0 g/cm3 and another planet nice

From A&A:

Detection of Neptune-size planetary candidates with CoRoT data: Comparison with the planet occurrence rate derived from Kepler

Seems that the occurrence rate of Neptunes in the CoRoT data disagrees with that from Kepler: the Kepler occurrence rate predicts that CoRoT should have found more Neptunes by now.

Potential implications for false-positive rates in the transit surveys.

They should observe more bright stars. The majority of candidates found by corot are 13 mag or above...and they have a very little telescope in comparison with Kepler.

A paper on arXiv about this very topic.
http://arxiv.org/abs/1209.4815

Checking that the CoRoT planet transits behave as expected at different wavelengths...

An analysis of CoRoT multicolour photometry of exoplanets
http://arxiv.org/abs/1210.3549

An overview of the mission results obtained so far:

http://meetingorganizer.copernicus.org/EPSC2012/EPSC2012-381.pdf

The observation program for the possible next 3 years extension:

http://meetingorganizer.copernicus.org/EPSC2012/EPSC2012-198-2.pdf

A dedicated search in the Corot database for close-in planets orbiting intermediate-mass stars:

http://www.eso.org/sci/meetings/2012/ESOat50/Posters/Sebastian.pdf

Looks like after a serious malfunction on its computer, CoRoT may have finished its business...

Nature: Exoplanet hunter nears its end

Nuuuu

bad news...
But :
« ...Malcolm Fridlund, the project scientist from the European Space Agency, says he’s got plenty of data to work with. He’s preparing a paper that will describe five new exoplanets, bringing the mission’s confirmed count to 31. And there are some 200 candidate exoplanets that remain unconfirmed… »

Interesting hints from the Corot Scientific Meeting on 9 October 2012, before the serious fault happened:

http://smsc.cnes.fr/COROT/SC/sc45/Minutes_SC45_V1.pdf

Quote :

The summer follow-up campaign on LRc07 and LRc08 fields was good, with 4 new planets + one from SRa04 awaiting publication. The CEST team is preparing the announcement of 5 new planets, in 2-3 papers (led resp. by Parviainen (CoRoT 27), Cabrera (CoRoT 28+29), Bordé (CoRoT 30+31)). They are mainly hot Jupiters (~Mjup and P<5d) but 2 are massive ones (P=10d and 3Mjup and P=4d and 10Mjup)
* The work is continuing on SRa01-0770 not confirmed with RV, re-observed in SRa05; though it is not sure it is a cluster member, it could be validated as planet anyway (Aigrain).
* The LAM team is progressing a lot on the validation procedure when RV is not conclusive, with the tool called PASTIS. Publication is on the way, and the analysis of a dozen of promising cases for which we could not conclude yet but have a lot of data. (Diaz)
* Magali is still working on the "mega paper" summarizing all candidates up to LRc08
* A review on CoRoT/exo for the Icarus special issue on exoplanet is foreseen for end of November
* The publications of the reobservation of CoRoT 7 and CoRoT 9 are being prepared, could be issued by the end of the year (Barros, Haywood, Hebrard)-
* CoRoT /exo program was presented this summer at COSPAR (Wuchterl), in Sagan school (Deleuil), in Beijing at IAU (Deleuil) and in Madrid EPSC (Deeg + Cabrera)
* MF mentions that a paper on host stars characterization is in progress with Magali and himself.

Secondary eclipses measured for a couple new planets (and maybe a few more).

Secondary eclipses in the CoRoT light curves: A homogeneous search based on Bayesian model selection
http://arxiv.org/abs/1211.5361

A couple new planets? Which ones?

Edasich wrote:

A couple new planets? Which ones?

The eclipse detections were new, not the planets. Sorry about the ambiguity.

I was asking because Parviainen is supposed to release Corot-27 b (previous post).

Paper about corot 25 and 26 submitted in aanda

tommi59 wrote:

Paper anout corot 25 and 26 submitted in aanda

In forthcoming papers I don't see anything.

Edasich wrote:

tommi59 wrote:

Paper anout corot 25 and 26 submitted in aanda

In forthcoming papers I don't see anything.

It's on the EPE bibiography.