J/A+A/603/A43       CoRoT-9 radial velocity curve                (Bonomo+, 2017)
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A deeper view of the CoRoT-9 planetary system. A small non-zero eccentricity
for CoRoT-9b likely generated by planet-planet scattering.
    Bonomo A.S., Hebrard G., Raymond S.N., Bouchy F., Lecavelier des Etangs A.,
    Borde P., Aigrain S., Almenara J.-M., Alonso R., Cabrera J., Csizmadia Sz.,
    Damiani C., Deeg H.J., Deleuil M., Diaz R.F., Erikson A., Fridlund M.,
    Gandolfi D., Guenther E., Guillot T., Hatzes A., Izidoro A., Lovis C.,
    Moutou C.,  , Ollivier M., Paetzold M., Rauer H., Rouan D., Santerne A.,
    Schneider J.
    <Astron. Astrophys. 603, A43 (2017)>
    =2017A&A...603A..43B        (SIMBAD/NED BibCode)
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ADC_Keywords: Stars, double and multiple ; Planets ; Radial velocities
Keywords: planetary systems - techniques: radial velocities -
          techniques: photometric - stars: individual: CoRoT-9

Abstract:
    CoRoT-9b is one of the rare long-period (P=95.3days) transiting giant
    planets with a measured mass known to date. We present a new analysis
    of the CoRoT-9 system based on five years of radial-velocity (RV)
    monitoring with HARPS and three new space-based transits observed with
    CoRoT and Spitzer. Combining our new data with already published
    measurements we redetermine the CoRoT-9 system parameters and find
    good agreement with the published values. We uncover a higher
    significance for the small but non-zero eccentricity of CoRoT-9b
    (e=0.133^+0.042^_-0.037_) and find no evidence for additional planets
    in the system. We use simulations of planet-planet scattering to show
    that the eccentricity of CoRoT-9b may have been generated by an
    instability in which a ~50M_{earth}_ planet was ejected from the
    system. This scattering would not have produced a spin-orbit
    misalignment, so we predict that the CoRoT-9b orbit should lie within
    a few degrees of the initial plane of the protoplanetary disk. As a
    consequence, any significant stellar obliquity would indicate that the
    disk was primordially tilted.

Description:
    We obtained 28 radial-velocity observations of CoRoT-9 between
    September 2008 and August 2013 with the HARPS fibrefed spectrograph
    at the 3.6m ESO telescope in La Silla, Chile (programme 184.C-0639).

Objects:
    -----------------------------------------------------------
       RA   (2000)   DE       Designation(s)
    -----------------------------------------------------------
    18 43 08.81  +06 12 14.9  CoRoT-9 = 2MASS J18430881+0612150
    -----------------------------------------------------------

File Summary:
--------------------------------------------------------------------------------
 FileName      Lrecl  Records   Explanations
--------------------------------------------------------------------------------
ReadMe            80        .   This file
table1.dat        40        4   HARPS radial-velocity measurements of CoRoT-9
                                 (CoRoT 105891283)
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See also:
   B/corot : CoRoT observation log (N2-4.4) (CoRoT 2016)

Byte-by-byte Description of file: table1.dat
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   Bytes Format Units   Label   Explanations
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   1-  9  F9.4  d       BJD     Barycentric Julian date (BJD-2450000)
      10  A1    ---   n_BJD     [*] * for measurements corrected for moonlight
                                 pollution
  12- 17  F6.3  km/s    RV      Radial velocity
  19- 23  F5.3  km/s  e_RV      rms uncertainty on RV
  25- 30  F6.3  km/s    Bis     Bisector span (error bars are twice those of
                                 the RVs)
  32- 35  I4    s       Texp    Duration of each individual exposure
  37- 40  F4.1  ---     S/N     Signal-to-noise ratio per pixel at 550nm
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History:
    From electronic version of the journal

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(End)                                        Patricia Vannier [CDS]  09-May-2017