The time dependence of hot Jupiters' orbital inclinations

  title={The time dependence of hot Jupiters' orbital inclinations},
  author={Amaury H. M. J. Triaud},
  journal={Astronomy and Astrophysics},
  • A. Triaud
  • Published 27 September 2011
  • Physics
  • Astronomy and Astrophysics
Via the Rossiter-McLaughlin effect, it is possible to measure the sky-projected angle between the stellar spin and a planet’s orbital spin. Observed orbital inclinations have been found to range over all possible angles. A tentative detection of a correlation between the dispersion in spin/orbit angle and the youth of the system is revealed, using spin/orbit measurements for hot Jupiters around stars 

Figures and Tables from this paper

Spin-Orbit Angles as a Probe to Orbital Evolution
Abstract We observed with HARPS, the Rossiter-McLaughlin effect for 40 of the 75 transiting hot Jupiters discovered in the Southern Hemisphere by WASP. Our observations reveal a wide distribution in
A high stellar obliquity in the WASP-7 exoplanetary system
We measure a tilt of 86 6 between the sky projections of the rotation axis of the WASP-7 star, and the orbital axis of its close-in giant planet. This measurement is based on observations of the
On the tidal origin of hot Jupiter stellar obliquity trends
It is debated whether the two hot Jupiter populations --- those on orbits misaligned from their host star's spin axis and those well-aligned --- result from two migration channels or from two tidal
Toward the Measurements of Spin-Orbit Relations for Small Planets
In this chapter, we present an investigation of spin-orbit angles for planetary system candidates reported by the Kepler space telescope. By combining the rotational period \(P_s\) inferred from the
Multiple-planet Scattering and the Origin of Hot Jupiters
Doppler and transit observations of exoplanets show a pile-up of Jupiter-size planets in orbits with a 3 day period. A fraction of these hot Jupiters have retrograde orbits with respect to the parent
Measurements of Stellar Obliquities
As mentioned in Chap. 1, stars hosting hot Jupiters exhibit a wide range of obliquities. The knowledge comes from the spectroscopic technique, that is, modeling of the Rossiter-McLaughlin (RM) effect
The Rossiter-McLaughlin effect in Exoplanet Research
The Rossiter-McLaughlin effect occurs during a planet's transit. It provides the main means of measuring the sky-projected spin-orbit angle between a planet's orbital plane, and its host star's
Measurements of stellar inclinations for kepler planet candidates
We present an investigation of spin-orbit angles for planetary system candidates reported by Kepler. By combining the rotational period Ps inferred from the flux variation due to starspots and the
Evolution History of Extrasolar Planetary Systems
In this chapter, we review the basics on the detection and characterization of exoplanetary systems. We first focus on the two leading techniques (the radial velocity and transit methods), deriving
Doppler tomography of transiting exoplanets: a prograde, low-inclined orbit for the hot Jupiter CoRoT-11b
We report the detection of the Doppler shadow of the transiting hot Jupiter CoRoT-11b. Our analysis is based on line-profile tomography of time-series, Keck/HIRES high-resolution spectra acquired


Spin–Orbit Alignment of the TrES-4 Transiting Planetary System and Possible Additional Radial-Velocity Variation
We report new radial velocities of the TrES-4 transiting planetary system, including observations of a full planetary transit, with the High Dispersion Spectrograph on the Subaru 8.2 m telescope.
The retrograde orbit of the HAT-P-6b exoplanet
We observed with the SOPHIE spectrograph (OHP, France) the transit of the HAT-P-6b exoplanet across its host star. The resulting stellar radial velocities display the Rossiter-McLaughlin anomaly and
We present photometric and spectroscopic observations of the 2009 February 2 transit of the exoplanet XO-3b. The new data show that the planetary orbital axis and stellar rotation axis are
The Rossiter–McLaughlin Effect of the Transiting Exoplanet XO-4b
We report photometric and radial velocity observations of the XO-4 transiting planetary system, conducted with the FLWO 1.2 m telescope and the 8.2 m Subaru Telescope. Based on the new light curves,
A Third Exoplanetary System with Misaligned Orbital and Stellar Spin Axes
We present evidence that the WASP-14 exoplanetary system has misaligned orbital and stellar-rotational axes, with an angle λ = -33.1° ± 7.4° between their sky projections. The evidence is based on
One possible diagnostic of planet formation, orbital migration, and tidal evolution is the angle ψ between a planet's orbital axis and the spin axis of its parent star. In general, ψ cannot be
Misaligned spin-orbit in the XO-3 planetary system?
The transiting extrasolar planet XO-3b is remarkable, with a high mass and eccentric orbit. These unusual characteristics make it interesting to test whether its orbital plane is parallel to the
The Doppler shadow of WASP-3b A tomographic analysis of Rossiter-McLaughlin observations
Context. Hot-Jupiter planets must form at large separations from their host stars where the temperatures are cool enough for their cores to condense. They then migrate inwards to their current
Improved Measurement of the Rossiter–McLaughlin Effect in the Exoplanetary System HD 17156
We present an improved measurement of the Rossiter-McLaughlin effect for the exoplanetary system HD 17156, based on radial-velocity data gathered with the Subaru 8.2m telescope throughout the
Hot Jupiters from secular planet–planet interactions
A brief excursion to very high eccentricity during the chaotic evolution of the inner orbit allows planet–star tidal interactions to rapidly circularize that orbit, decoupling the planets and forming a retrograde hot Jupiter.