Spin-Orbit Misalignments of Three Jovian Planets via Doppler Tomography

Abstract

We present measurements of the spin-orbit misalignments of the hot Jupiters HAT-P-41 b and WASP-79 b, and the aligned warm Jupiter Kepler-448 b. We obtained these measurements with Doppler tomography, where we spectroscopically resolve the line profile perturbation during the transit due to the Rossiter-McLaughlin effect. We analyze time series spectra obtained during portions of five transits of HAT-P-41 b, and find a value of the spin-orbit misalignment of $\lambda =-22.1_{-6.0}^{+0.8\circ }$. We reanalyze the radial velocity Rossiter-McLaughlin data on WASP-79 b obtained by Addison et al. (2013) using Doppler tomographic methodology. We measure $\lambda =-99.1_{-3.9}^{+4.1\circ }$, consistent with but more precise than the value found by Addison et al. (2013). For Kepler-448 b we perform a joint fit to the Kepler light curve, Doppler tomographic data, and a radial velocity dataset from Lillo-Box et al. (2015). We find an approximately aligned orbit ($\lambda =-7.1_{-2.8}^{+4.2\circ }$), in modest disagreement with the value found by Bourrier et al. (2015). Through analysis of the Kepler light curve we measure a stellar rotation period of $P_{\mathrm{rot}}=1.27\pm 0.11$ days, and use this to argue that the full three-dimensional spin-orbit misalignment is small, $\psi \sim 0^{\circ }$.

arXiv commentAccepted for publication in AJ. 16 pages, 8 figures

References in corpus (58)

• emcee: The MCMC Hammer
• The generalised Lomb-Scargle periodogram. A new formalism for the floating-mean and Keplerian periodograms
• Shrinking binary and planetary orbits by Kozai cycles with tidal friction
• batman: BAsic Transit Model cAlculatioN in Python
• Characteristics of planetary candidates observed by Kepler, II: Analysis of the first four months of data
• Dynamical Outcomes of Planet-Planet Scattering
• Efficient, uninformative sampling of limb darkening coefficients for two-parameter laws
• Hot Stars with Hot Jupiters Have High Obliquities
• Obliquities of Hot Jupiter host stars: Evidence for tidal interactions and primordial misalignments
• Measuring the rotation period distribution of field M-dwarfs with Kepler
• Spin-orbit angle measurements for six southern transiting planets; New insights into the dynamical origins of hot Jupiters
• Friends of Hot Jupiters I: A Radial Velocity Search for Massive, Long-Period Companions to Close-In Gas Giant Planets
• Measurement of Spin-Orbit Alignment in an Extrasolar Planetary System
• Chaotic star formation and the alignment of stellar rotation with disc and planetary orbital axes
• Stellar Spin-Orbit Misalignment in a Multiplanet System
• Line-profile tomography of exoplanet transits -- II. A gas-giant planet transiting a rapidly-rotating A5 star
• A Gaussian process framework for modelling instrumental systematics: application to transmission spectroscopy
• On the Formation of Hot Jupiters in Stellar Binaries
• The Impact of Stellar Multiplicity on Planetary Systems, I.: The Ruinous Influence of Close Binary Companions
• Stellar Rotation Periods of the Kepler Objects of Interest: A Dearth of Close-in Planets around Fast Rotators
• Evolution of Spin Direction of Accreting Magnetic Protostars and Spin-Orbit Misalignment in Exoplanetary Systems
• Transit Timing Observations from Kepler. VIII Catalog of Transit Timing Measurements of the First Twelve Quarters
• Zodiacal Exoplanets in Time (ZEIT) III: A short-period planet orbiting a pre-main-sequence star in the Upper Scorpius OB Association
• Low stellar obliquities in compact multiplanet systems
• Zodiacal Exoplanets In Time (ZEIT) I: A Neptune-sized planet orbiting an M4.5 dwarf in the Hyades Star Cluster
• Photometric Amplitude Distribution of Stellar Rotation of Kepler KOIs-Indication for Spin-Orbit Alignment of Cool Stars and High Obliquity for Hot Stars
• Internal Gravity Waves Modulate the Apparent Misalignment of Exoplanets around Hot Stars
• Friends of Hot Jupiters. IV. Stellar companions beyond 50 AU might facilitate giant planet formation, but most are unlikely to cause Kozai-Lidov migration
• HAT-P-39b--HAT-P-41b: Three Highly Inflated Transiting Hot Jupiters
• High-resolution imaging of $Kepler$ planet host candidates. A comprehensive comparison of different techniques
• The Turbulent Origin of Spin-Orbit Misalignment in Planetary Systems
• Observation of the full 12-hour-long transit of the exoplanet HD80606b. Warm-Spitzer photometry and SOPHIE spectroscopy
• Near-infrared Thermal Emission from WASP-12b: detections of the secondary eclipse in Ks, H & J
• Evolution of Spin Direction of Accreting Magnetic Protostars and Spin-Orbit Misalignment in Exoplanetary Systems: II. Warped Discs
• A Misaligned Prograde Orbit for Kepler-13 Ab via Doppler Tomography
• Rossiter--McLaughlin models and their effect on estimates of stellar rotation, illustrated using six WASP systems
• On the tidal origin of hot Jupiter stellar obliquity trends
• A Lucky Imaging search for stellar sources near 74 transit hosts
• Measurement of the Nodal Precession of WASP-33 b via Doppler Tomography
• HAT-P-57b: A Short-Period Giant Planet Transiting A Bright Rapidly Rotating A8V Star Confirmed Via Doppler Tomography
• WASP-78b and WASP-79b: Two highly-bloated hot Jupiter-mass exoplanets orbiting F-type stars in Eridanus
• CAFE: Calar Alto Fiber-fed Echelle spectrograph
• On the Tidal Dissipation of Obliquity
• Are Tidal Effects Responsible for Exoplanetary Spin-Orbit Alignment?
• A Nearly Polar Orbit for the Extrasolar Hot Jupiter WASP-79b
• High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). I. Lucky imaging observations of 101 systems in the southern hemisphere
• Modelling the Rossiter-McLaughlin Effect: Impact of the Convective Centre-to-Limb Variations in the Stellar Photosphere
• A Lucky Imaging search for stellar companions to transiting planet host stars
• Discovery of XO-6b: a hot Jupiter transiting a fast rotating F5 star on an oblique orbit
• Long-lived Chaotic Orbital Evolution of Exoplanets in Mean Motion Resonances with Mutual Inclinations
• A hot Jupiter for breakfast? --- Early stellar ingestion of planets may be common
• CYCLOPS2: the fibre image slicer upgrade for the UCLES high resolution spectrograph
• Eccentric Companions to Kepler-448b and Kepler-693b: Clues to the Formation of Warm Jupiters
• Alignment of Protostars and Circumstellar Disks During the Embedded Phase
• Spin-orbit alignments for Three Transiting Hot Jupiters: WASP-103b, WASP-87b, & WASP-66b
• Can stellar activity make a planet seem misaligned?
• Probable Spin-Orbit Aligned Super-Earth Planet Candidate KOI-2138.01
• Eclipsing binaries and fast rotators in the Kepler sample. Characterization via radial velocity analysis from Calar Alto

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