Measurements of Spin-Orbit Angles for Transiting Systems

Toward an Understanding of the Migration History of Exoplanets

  • Teruyuki¬†Hirano

Part of the Springer Theses book series (Springer Theses)

Table of contents

  1. Front Matter
    Pages i-xv
  2. Teruyuki Hirano
    Pages 1-4
  3. Teruyuki Hirano
    Pages 121-124
  4. Back Matter
    Pages 125-134

About this book


This thesis presents accurate analyses of the spin-orbit angle for many remarkable transiting exoplanetary systems, including the first measurement of the Rossiter-McLaughlin effect for a multiple transiting system.


The author presents the observational methods needed to probe the spin-orbit angle, the relation between the stellar spin axis and planetary orbital axis. Measurements of the spin-orbit angle provide us a unique and valuable opportunity to understand the origin of close-in giant exoplanets, called "hot Jupiters".


The first method introduced involves observations of the Rossiter-McLaughlin effect (RM effect). The author points out the issues with the previous theoretical modeling of the RM effect and derives a new and improved theory. Applications of the new theory to observational data are also presented for a number of remarkable systems, and the author shows that the new theory minimizes the systematic errors by applying it to the observational data.


The author also describes another method for constraining the spin-orbit angle: by combining the measurements of stellar flux variations due to dark spots on the stellar surface, with the projected stellar rotational velocity measured via spectroscopy, the spin-orbit angles "along the line-of-sight" are constrained for the transiting exoplanetary systems reported by the Kepler space telescope.


Exoplanet Measurements of spin-orbit angle Origin of close-in Planets Planetary Migration Planetary Transit RM Effect Rossiter-McLaughlin Effect Spin-orbit Angle

Authors and affiliations

  • Teruyuki¬†Hirano
    • 1
  1. 1.Department of PhysicsThe University of TokyoTokyoJapan

Bibliographic information

  • DOI
  • Copyright Information Springer Japan 2014
  • Publisher Name Springer, Tokyo
  • eBook Packages Physics and Astronomy
  • Print ISBN 978-4-431-54585-9
  • Online ISBN 978-4-431-54586-6
  • Series Print ISSN 2190-5053
  • Series Online ISSN 2190-5061
  • About this book