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J/A+A/493/645       Gl 176 radial velocities                 (Forveille+, 2009)
The HARPS search for southern extra-solar planets.
XIV. Gl 176b, a super-Earth rather than a Neptune, and at a different period.
    Forveille T., Bonfils X., Delfosse X., Gillon M., Udry S., Bouchy F.,
    Lovis C., Mayor M., Pepe F., Perrier C., Queloz D., Santos N.,
    Bertaux J.-L.
   <Astron. Astrophys., 493, 645-650 (2009)>
   =2009A&A...493..645F
ADC_Keywords: Stars, late-type ; Planets ; Radial velocities

Keywords: stars: planetary systems - stars: late-type - stars: activity -
          stars: low-mass, brown dwarfs - stars: starspots -
          stars: individual: G1 176

Abstract:
    A 10.24-day Neptune-mass planet was recently announced as orbiting the
    nearby M2 dwarf Gl 176, based on 28 radial velocities measured with
    the HRS spectrograph on the Hobby-Heberly Telescope. We obtained 57
    radial velocities of Gl 176 with the ESO 3.6m telescope and the HARPS
    spectrograph, which is known for its sub-m/s stability. The median
    photon-noise standard error of our measurements is 1.1m/s, and the
    4-year period over which they were obtained overlaps considerably with
    the epochs of the HET measurements. The HARPS measurements show no
    evidence of a signal at the period of the putative HET planet,
    suggesting that its detection was spurious. We do find, on the other
    hand, strong evidence of a lower mass 8.4MEarth planet, in a
    quasi-circular orbit and at the different period of 8.78 days.
Objects:
    --------------------------------------------
       RA   (2000)   DE      Designation(s)
    --------------------------------------------
    04 42 55.8   +18 57 29   Gl 176 = HIP 21932
    --------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table2.dat        29       57   Radial-velocity measurements and error bars
                              for Gl 176


See also:
 J/A+A/469/L43  : Radial velocities of Gl 581 (Udry+, 2007)
 J/A+A/474/293  : Radial velocities of GJ 674 (Bonfils+, 2007)
 J/A+A/493/639  : Velocity curves of HD 40307 (Mayor+, 2009)
 J/A+A/496/513  : RV of 6 stars with long-period giant planets (Moutou+, 2009)
 J/A+A/496/521  : Radial velocities of HD45364 (Correia+, 2009)
 J/A+A/496/527  : Radial velocity curves of HD 47186 & HD 181433 (Bouchy+, 2009)
 J/A+A/507/487  : GJ 581 radial velocity curve (Mayor+, 2009)
 J/A+A/512/A46  : Radial velocities of BD-08 2823 (Hebrard+, 2010)
 J/A+A/512/A47  : Radial velocities of 3 stars with giant planets (Santos+ 2010)
 J/A+A/512/A48  : HD125612, HD215497, HIP5158 HARPS RV curves (Lo Curto+, 2010)
 J/A+A/523/A15  : RV data for the 8 targets (Naef+, 2010)
 J/A+A/526/A141 : HIP 85647 & Gl 676A radial velocities (Forveille+, 2011)
 J/A+A/527/A63  : 7 new HARPS planetary systems radial velocities (Moutou+ 2011)


Byte-by-byte Description of file: table2.dat

   Bytes Format Units   Label     Explanations

   1- 14  F14.6 d       JD        Julian date
  16- 22  F7.4  km/s    RV        Radial velocity (1)
  24- 29  F6.4  km/s    e_RV      rms uncertainty on RV

Note (1): All values are relative to the solar system barycenter, and
     corrected from the small perspective acceleration using the Hipparcos
     parallax and proper motion.


History:
    From electronic version of the journal

References:
    Pepe et al.,      Paper I        2004A&A...423..385P
    Santos et al.,    Paper II       2004A&A...426L..19S
    Lovis et al.,     Paper III      2005A&A...437.1121L
    Moutou et al.,    Paper IV       2005A&A...439..367M
    Udry et al.,      Paper V        2006A&A...447..361U
    Bonfils et al.,   Paper VI       2005A&A...443L..15B
    Lo Curto et al.,  Paper VII      2006A&A...451..345L
    Pepe et al.,      Paper VIII     2007A&A...462..769P
    Naef et al.,      Paper IX       2007A&A...470..721N
    Bonfils et al.,   Paper X        2007A&A...474..293B, Cat. J/A+A/474/293 
    Udry et al.,      Paper XI       2007A&A...469L..43U, Cat. J/A+A/469/L43 
    Santos et al.,    Paper XII      2007A&A...474..647S
    Mayor et al.,     Paper XIII     2009A&A...493..639M
    Moutou et al.,    Paper XV       2009A&A...496..513M, Cat. J/A+A/496/513 
    Correia et al.,   Paper XVI      2009A&A...496..521C, Cat. J/A+A/496/521 
    Bouchy et al.,    Paper XVII     2009A&A...496..527B, Cat. J/A+A/496/527 
    Mayor et al.,     Paper XVIII    2009A&A...507..487M
    Correia et al.,   Paper XIX      2010A&A...511A..21C
    Hebrard et al.,   Paper XX       2010A&A...512A..46H, Cat. J/A+A/512/A46 
    Santos et al.,    Paper XXI      2010A&A...512A..47S, Cat. J/A+A/512/A47 
    Lo Curto et al.,  Paper XXII     2010A&A...512A..48L, Cat. J/A+A/512/A48 
    Naef et al.,      Paper XXIII    2010A&A...523A..15N, Cat. J/A+A/523/A15 
    Forveille et al., Paper XXVI     2011A&A...526A.141F, Cat. J/A+A/526/A141
    Moutou et al.,    Paper XXVII    2011A&A...527A..63M, Cat. J/A+A/527/A63
(End)                                      Patricia Vannier [CDS]    20-Feb-2009