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J/A+A/506/359       FORS2 and HAWKI photometry of CoRoT-1        (Gillon+, 2009)
VLT transit and occultation photometry for the bloated planet CoRoT-1b.
    Gillon M., Demory B.-O., Triaud A.H.M.J., Barman T., Hebb L., Montalban J.,
    Maxted P.F.L., Queloz D., Deleuil M., Magain P.
   <Astron. Astrophys. 506, 359 (2009)>
   =2009A&A...506..359G
ADC_Keywords: Binaries, eclipsing ; Planets ; Photometry

Keywords: binaries: eclipsing - planetary systems - stars: individual: CoRoT-1 -
          infrared: stars - techniques: photometric -
          techniques: radial velocities

Abstract:
    We present VLT eclipse photometry for the giant planet CoRoT-1b. We
    observed a transit in the R-band filter and an occultation in a narrow
    filter centered on 2.09µm. Our analysis of this new photometry and
    published radial velocities, in combination with stellar-evolutionary
    modeling, leads to a planetary mass and radius of
    1.07+0.13-0.18M{Jup} and 1.45+0.07-0.13R_{Jup}, confirming
    the very low density previously deduced from CoRoT photometry. The
    large occultation depth that we measure at 2.09µm
    (0.2780.043-0.066% ) is consistent with thermal emission and is
    better reproduced by an atmospheric model with no redistribution of
    the absorbed stellar flux to the night side of the planet.
Objects:
    -----------------------------------------------
       RA   (2000)   DE      Designation(s)
    -----------------------------------------------
    06 48 19.2   -03 06 08   CoRoT-1 = Corot-Exo-1
    -----------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
fors-r.dat        35      103  *103 measurements obtained with VLT/FORS2
                              R_SPECIAL filter (λeff=655nm,
                              FWHM=165nm) on 2008 February 28
hawki-nb.dat      35      301  *301 measurements obtained with VLT/HAWKI
                              narrow band filter NB2090 (λc=2.095um,
                              width=0.020um) on 2009 January 06

Note on fors-r.dat: 114 images were obtained during the run, but 11 of them
     were saturated (or close to the saturation) and rejected in our analysis.
Note on hawki-nb.dat: 318 images were obtained, but 17 measurements were
     considered as outliers during the reduction and discarded. An error of
     0.3% was added quadratically to the theoretical errors to account for
     the "jitter" noise (see paper).


See also:
    B/corot : CoRoT observation log (CoRoT, 2009)


Byte-by-byte Description of file: fors-r.dat hawki-nb.dat

   Bytes Format Units   Label     Explanations

   1- 15  F15.7 d       BJD       Barycentric Julian date
  17- 25  F9.7  ---     Flux      Flux
  27- 35  F9.7  ---     e_Flux    rms uncertainty on Flux


Acknowledgements:
    Michael Gillon, Michael.Gillon(at)obs.unige.ch
(End)                                        Patricia Vannier [CDS]  29-May-2009