J/AJ/166/159 WASP-106 b Radial velocity follow up (Harre+, 2023)
The Orbit of Warm Jupiter WASP-106 b is Aligned with its Star.
Harre J.-V., Smith A.M.S., Hirano T., Csizmadia S., Triaud A.H.M. J,
Anderson D.R.
<Astron. J., 166, 159 (2023)>
=2023AJ....166..159H 2023AJ....166..159H
ADC_Keywords: Exoplanets; Spectra, optical; Radial velocities
Keywords: Exoplanet evolution ; Exoplanet migration ; Radial velocity ;
Photometry ; Transits
Abstract:
Understanding orbital obliquities, or the misalignment angles between
a star's rotation axis and the orbital axis of its planets, is crucial
for unraveling the mechanisms of planetary formation and migration. In
this study, we present an analysis of Rossiter-McLaughlin (RM)
observations of the warm Jupiter exoplanet WASP-106b. The
high-precision radial velocity measurements were made with HARPS and
HARPS-N during the transit of this planet. We aim to constrain the
orientation of the planet's orbit relative to its host star's rotation
axis. The RM observations are analyzed using a code which models the
RM anomaly together with the Keplerian orbit given several parameters
in combination with a Markov chain Monte Carlo implementation. We
measure the projected stellar obliquity in the WASP-106 system for the
first time and find λ=(-1±11)°, supporting the theory
of quiescent migration through the disk.
Description:
We obtained archival HARPS 8 and HARPS-N 9 Radial velocity
observations. 20 observations were obtained using the CORALIE
spectrograph and nine using the SOPHIE spectrograph, all of which were
taken between 2013 January and 2014 February.
Objects:
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RA (2000) DE Designation(s) (Period)
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11 05 43.13 -05 04 45.9 WASP-106 = 2MASS J11054313-0504458 (P=9.29)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 31 131 Radial velocity data of WASP-106 b
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See also:
J/A+A/527/L11 : HAT-P-6 radial velocity curve (Hebrard+, 2011)
J/A+A/552/A16 : Limb-darkening CoRoT, Kepler, Spitzer. II. (Claret+, 2013)
J/ApJ/772/80 : Radial velocities of HAT-P-17 (Fulton+, 2013)
J/A+A/570/A64 : WASP-104b and WASP-106b photometry (Smith+, 2014)
J/MNRAS/506/3810 : 7 transiting exoplanets CHEOPS light curves (Borsato+, 2021)
J/A+A/664/A162 : LC and RV for HAT-P-15, 17, 21, 26 and 29 (Mancini+, 2022)
J/AJ/164/104 : NEID and HIRES radial velocity of TOI-1478 (Rice+, 2022)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1-10 A10 d BJD Barycentric Julian Date of observation; BJD-2450000
12-20 A9 km/s RVel Radial velocity
22-29 A8 km/s e_RVel Error on RVel
31-31 A1 --- Inst Code for instrument used (1)
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Note (1): Codes as follows:
1 = SOPHIE
2 = CORALIE
3 = HARPS (first night)
4 = HARPS (second night)
5 = HARPS-N
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 17-May-2024