J/A+A/654/A104 HARPS XLVI. RV data for the 5 targets (Unger+, 2021)
The HARPS search for southern extra-solar planets.
XLVI: 12 super-Earths around the solar type stars HD39194, HD93385, HD96700,
HD154088, and HD189567.
Unger N., Segransan D., Queloz D., Udry S., Lovis C., Mordasini C.,
Ahrer E., Benz W., Bouchy F., Delisle J.-B., Diaz R.F., Dumusque X.,
Lo Curto G., Marmier M., Mayor M., Pepe F., Santos N.C., Stalport M.,
Alonso R., Collier Cameron A., Deleuil M., Figueira P., Gillon M.,
Moutou C., Pollacco D., Pompei E.
<Astron. Astrophys. 654, A104 (2021)>
=2021A&A...654A.104U 2021A&A...654A.104U (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Radial velocities ;
Optical
Keywords: technique: radial velocities - planets and satellites: detection -
planetary systems
Abstract:
We present precise radial-velocity measurements of five solar-type
stars observed with the HARPS Echelle spectrograph mounted on the
3.6-m telescope in La Silla (ESO, Chile). With a time span of more
than 10 years and a fairly dense sampling, the survey is sensitive to
low mass planets down to super-Earths on orbital periods up to 100
days.
Our goal was to search for planetary companions around the stars
HD39194, HD93385, HD96700, HD154088, and HD189567 and use Bayesian
model comparison to make an informed choice on the number of planets
present in the systems based on the radial velocity observations.
These findings will contribute to the pool of known exoplanets and
better constrain their orbital parameters.
A first analysis was performed using the DACE (Data & Analysis Center
for Exoplanets) online tools to assess the activity level of the star
and the potential planetary content of each system. We then used
Bayesian model comparison on all targets to get a robust estimate of
the number of planets per star. We did this using the nested sampling
algorithm PolyChord. For some targets, we also compared different
noise models to disentangle planetary signatures from stellar
activity. Lastly, we ran an efficient MCMC (Markov chain Monte Carlo)
algorithm for each target to get reliable estimates for the planets'
orbital parameters.
We identify 12 planets within several multiplanet systems. These
planets are all in the super-Earth and sub-Neptune mass regime with
minimum masses ranging between 4 and 13 M⊕ and orbital periods
between 5 and 103 days. Three of these planets are new, namely
HD 93385 b, HD 96700 c, and HD 189567 c.
Description:
Each file contains the radial velocity and ancillary measurements
(bisector velocity span, full-width at half-maximum, and activity
indicator) for a star. Measurements were obtained with the HARPS
spectrograph installed at the 3.6-m telescope at La Silla observatory.
Objects:
--------------------------------------------------
RA (2000) DE Designation(s)
--------------------------------------------------
05 44 31.91 -70 08 36.85 HD 39194 = HIP 27080
10 46 15.11 -41 27 51.72 HD 93385 = HIP 52676
11 07 54.42 -30 10 28.44 HD 96700 = HIP 54400
17 04 27.84 -28 34 57.64 HD 154088 = HIP 83541
20 05 32.76 -67 19 15.22 HD 189567 = HIP 98959
--------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
hd39194.dat 67 273 HARPS measurements of HD39194
hd93385.dat 67 241 HARPS measurements of HD93385
hd96700.dat 67 254 HARPS measurements of HD96700
hd154088.dat 67 187 HARPS measurements of HD154088
hd189567.dat 67 256 HARPS measurements of HD189567
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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/493/645 : Gl 176 radial velocities (Forveille+, 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 : HD 47186 & HD 181433 radial velocity curves (Bouchy+, 2009)
J/A+A/507/487 : GJ 581 radial velocity curve (Mayor+, 2009)
J/A+A/511/A21 : Radial velocities of GJ876 planetary system (Correia+, 2010)
J/A+A/512/A46 : Radial velocities of BD-08 2823 (Hebrard+, 2010)
J/A+A/512/A47 : 3 stars with giant planets radial velocities (Santos+ 2010)
J/A+A/512/A48 : HD125612, HD215497, HIP5158 HARPS RV curves (Lo Curto+ 2010)
J/A+A/523/A15 : HARPS XXIII: RV data for the 8 targets (Naef+, 2010)
J/A+A/526/A111 : HD 85390, 90156, 103197 radial velocity (Mordasini+, 2011)
J/A+A/526/A112 : Radial velocities of HARPS metal-poor sample (Santos+, 2011)
J/A+A/526/A141 : Gl 676A and HIP 12961 velocity monitoring (Forveille+ 2011)
J/A+A/527/A63 : 7 new HARPS planetary systems RV (Moutou+, 2011)
J/A+A/528/A112 : Radial velocities of HD 10180 (Lovis+, 2011)
J/A+A/551/A59 : HD103774, HD109271 and BD-061339 RV curves (Lo Curto+, 2013)
J/A+A/556/A110 : HARPS radial velocities of GJ 163 (Bonfils+, 2013)
J/A+A/566/A35 : Radial velocities of HD 41248 (Santos+, 2014)
J/A+A/575/A119 : 3 HARPS M dwarfs RV and stellar activity
(Astudillo-Defru+, 2015)
J/A+A/576/A48 : Radial velocity monitoring for 6 stars (Moutou+, 2015)
J/A+A/585/A134 : HD1461, HD40307 and HD204313 radial velocities (Diaz+, 2016)
J/A+A/614/A133 : Radial velocities of HD215152 (Delisle+, 2018)
J/MNRAS/503/1248 : HD 13808 HARPS radial velocities (Ahrer+, 2021)
Byte-by-byte Description of file: hd*.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 F12.6 d BJD Barycentric Julian Date of observation
(BJD-2450000)
14- 22 F9.2 m/s RV Radial velocity
24- 27 F4.2 m/s e_RV Radial velocity uncertainty
29- 35 F7.5 km/s FWHM Full width at half-maximum of the CCF
37- 44 F8.5 m/s BIS Bisector velocity span of the
cross-correlation function (CCF)
46- 52 F7.4 [-] logRHK Activity indicator based on CaII HK
54- 59 F6.4 [-] e_logRHK Uncertainty in the log(R'HK) measurement
61- 67 A7 --- Inst Instrument (HARPS03 or HARPS15)
--------------------------------------------------------------------------------
Acknowledgements:
Nicolas Unger, nicolas.unger(at)unige.ch
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(End) Patricia Vannier [CDS] 26-Aug-2021