Some preliminary results from the exochannel From the run: IRa 01 Data: R. Alonso, R. Cautain, P-Y Chabaud, C. Chardes, L. Jorda, C. Surace, … Follow-up: C. Moutou, M. Deleuil, M. Barbieri, H. Deeg, A. Hatzes, H. Rauer, A. Erikson, S. Aigrain, A. Shporer, D. Rouan, … CS23 - 23/04/07

Present status of the alarm mode File transfer between LESIA, IAS and LAM are now working N0 -> N1 pipeline ready , concatenation of data ready …. but not in the production mode N1 data should be soon available Data presently available at LAM: Unconcatenated N0 products One week samples of LCs (build from N0 products) A few light curves on the complete run duration The « alarm » pipeline is not in the production mode  Tests have been made using N0 data (detection and follow up) CS23 - 23/04/07

From N0 data … … to preliminary LCs What we have made: Data were put in the appropriate format Various pieces concanenated in LCs Impacts of « cosmic rays » removed Detrending from low frequency variations Removal of systematics using PCA (only for some thousands of windows) Only hand made, not a pipeline ! CS23 - 23/04/07

A first and quick look CS23 - 23/04/07

Eclipsing binaries mv = 12.76 11% 13% mv = 13.42 6% CS23 - 23/04/07

Variables stars 0.4% 0.2% mv = 13.02 mv = 12.43 0.5% CS23 - 23/04/07

… also some problems CS23 - 23/04/07

Planet candidates A number of planet candidates identified in a few 1000 LCs. Two good candidates with series of deep transits (few %): One has a period of 5.8 days The other has a period of 1.5 days Use of archived data: EXODAT (1 candidate observed by BEST)  Follow Up triggered for the two candidates: Photometry : IAC80cm, Wise 1m, BEST, CFHT/Megacam Spectroscopy : Tautenburg, SOPHIE Archived data : BEST (1 candidate), EXODAT CS23 - 23/04/07

First candidate: COROT_001 CS23 - 23/04/07

COROT_001: Detrended LC CS23 - 23/04/07

COROT_001: Folded LC CS23 - 23/04/07

COROT_001: Ellipsoidal variation CS23 - 23/04/07

COROT_001: a secondary transit CS23 - 23/04/07

COROT_001: Results from the F-Up Radial velocity variations obtained from Tautenburg/1m Transit on the sentral star confirmed with IAC/80cm CS23 - 23/04/07

COROT_001 is an eclipsing binary - the primary is a 0 COROT_001 is an eclipsing binary - the primary is a 0.9 M G5V star - the companion is a M star of 0.128 M CS23 - 23/04/07

COROT_002: Light-curve CS23 - 23/04/07

COROT_002: Detrended LC CS23 - 23/04/07

COROT_002: Folded LC CS23 - 23/04/07

COROT_002: no elipsoidal variation CS23 - 23/04/07

COROT_002: no secondary transit No feature down to the 3.e-5 level CS23 - 23/04/07

COROT_002: follow up SOPHIE: radial velocity variations compatible with the LC (220+-20m/s) Bisector analysis: not a triple system Analysis of SOPHIE spectra: 6000K dwarf star (to be confirmed) Star mass ~ 1.17 (0.33) M Planet mass ~ 1.32 (0.25) MJup CS23 - 23/04/07

COROT_002 host a planet: - the planet is a very hot (1 COROT_002 host a planet: - the planet is a very hot (1.5days) giant one: RP ~ 1.78 (+ 0.3,-0.2) RJup MP ~ 1.32 (0.25) Mjup - the star is a dwarf (~ 6000K) with: M ~ 1.17 (0.33) M and R ~ 1.2 (-0.2,+0.1) R (parameters to be improved with higher resolution spectra) CS23 - 23/04/07

What we learned also … Confrontation space/ground Transit found deeper from the ground than from space …! Scattered light from the Earth can explain the difference (correction with an approximate value of 640e-/px/32sec) Background correction by hand ! We have to improve our organisation for the F-Up CS23 - 23/04/07