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Prospects for the Characterization and Confirmation of Transiting Exoplanets via the Rossiter‐McLaughlin Effect

Open access
Gaudi, B. Scott, Winn, Joshua N.·2007·The Astrophysical Journal

Abstract

The Rossiter-McLaughlin (RM) effect is the distortion of stellar spectral lines that occurs during eclipses or transits, due to stellar rotation. We assess the future prospects for using the RM effect to measure the alignment of planetary orbits with the spin axes of their parent stars, and to confirm exoplanetary transits. We compute the achievable accuracy for the parameters of interest, in general and for the five known cases of transiting exoplanets with bright host stars. We determine the requirements for detecting the effects of differential rotation. For transiting planets with small masses or long periods (as will be detected by forthcoming satellite missions), the velocity anomaly produced by the RM effect can be much larger than the orbital velocity of the star. For a terrestrial planet in the habitable zone of a Sunlike star found by the Kepler mission, it will be difficult to use the RM effect to confirm transits with current instruments, but it still may be easier than measuring the spectroscopic orbit.

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Metadata

Authors
Gaudi, B. S., & Winn, J. N.
Venue
The Astrophysical Journal
Published
2007-01-20
Volume
655
Issue
1
Pages
550-563
ISSN
  • 0004-637X (ISSN-L)
  • 1538-4357
OpenAlex
W2075957258
Cited by
317
References
4
FWCI
19.73
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Prospects for the Characterization and Confirmation of Transiting Exoplanets via the Rossiter‐McLaughlin Effect. https://app.cochat.ai/papers/10.1086/509910
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Gaudi, B. S., & Winn, J. N. (2007). Prospects for the Characterization and Confirmation of Transiting Exoplanets via the Rossiter‐McLaughlin Effect. The Astrophysical Journal. https://doi.org/10.1086/509910

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