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The Orbit of Warm Jupiter WASP-106b is aligned with its Star

Harre, Jan-Vincent and Smith, Alexis M S and Hirano, T. and Csizmadia, Sz. and Triaud, A. H. M. J. and Anderson, D R (2023) The Orbit of Warm Jupiter WASP-106b is aligned with its Star. The Astronomical Journal, 166. IOP Publishing. doi: 10.3847/1538-3881/acf46d. ISSN 0004-6256.

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Official URL: https://iopscience.iop.org/article/10.3847/1538-3881/acf46d


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-106 b. 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.

Item URL in elib:https://elib.dlr.de/197534/
Document Type:Article
Title:The Orbit of Warm Jupiter WASP-106b is aligned with its Star
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Harre, Jan-VincentUNSPECIFIEDhttps://orcid.org/0000-0001-8935-2472UNSPECIFIED
Smith, Alexis M SUNSPECIFIEDhttps://orcid.org/0000-0002-2386-4341UNSPECIFIED
Hirano, T.Astrobiology Center, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan; National Astronomical Observatory of Japan, NINS, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, JapanUNSPECIFIEDUNSPECIFIED
Csizmadia, Sz.UNSPECIFIEDhttps://orcid.org/0000-0001-6803-9698UNSPECIFIED
Triaud, A. H. M. J.School of Physics & Astronomy, University of Birmingham, Edg-baston, Birmingham, B15 2TT, UKhttps://orcid.org/0000-0002-5510-8751UNSPECIFIED
Anderson, D RDepartment of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UKUNSPECIFIEDUNSPECIFIED
Date:18 September 2023
Journal or Publication Title:The Astronomical Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Publisher:IOP Publishing
Keywords:Exoplanet evolution; Exoplanet migration; Radial velocity; Photometry; Transits
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Project PLATO - PMC and Science
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Extrasolar Planets and Atmospheres
Deposited By: Harre, Jan-Vincent
Deposited On:25 Sep 2023 16:24
Last Modified:25 Sep 2023 16:24

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