Skip to content Skip to navigation
University of Warwick
  • Study
  • |
  • Research
  • |
  • Business
  • |
  • Alumni
  • |
  • News
  • |
  • About

University of Warwick
Publications service & WRAP

Highlight your research

  • WRAP
    • Home
    • Search WRAP
    • Browse by Warwick Author
    • Browse WRAP by Year
    • Browse WRAP by Subject
    • Browse WRAP by Department
    • Browse WRAP by Funder
    • Browse Theses by Department
  • Publications Service
    • Home
    • Search Publications Service
    • Browse by Warwick Author
    • Browse Publications service by Year
    • Browse Publications service by Subject
    • Browse Publications service by Department
    • Browse Publications service by Funder
  • Help & Advice
University of Warwick

The Library

  • Login
  • Admin

Rossiter-McLaughlin models and their effect on estimates of stellar rotation, illustrated using six WASP systems

Tools
- Tools
+ Tools

Brown, D. J. A., Triaud, A. H. M. J., Doyle, A. P., Gillon, M., Lendl, M., Anderson, D. R., Cameron, A. Collier, Hébrard, G., Hellier, C., Lovis, C., Maxted, P. F. L., Pepe, F., Pollacco, Don, Queloz, Didier and Smalley, B. (2017) Rossiter-McLaughlin models and their effect on estimates of stellar rotation, illustrated using six WASP systems. Monthly Notices of the Royal Astronomical Society, 464 (1). pp. 810-839. doi:10.1093/mnras/stw2316

[img] PDF
WRAP_djabrown_w61-w62-w71-w76-w78-w79_v4.2.pdf - Accepted Version - Requires a PDF viewer.

Download (1904Kb)
Official URL: http://dx.doi.org/10.1093/mnras/stw2316

Request Changes to record.

Abstract

We present new measurements of the projected spin–orbit angle λ for six WASP hot Jupiters, four of which are new to the literature (WASP-61, -62, -76, and -78), and two of which are new analyses of previously measured systems using new data (WASP-71, and -79). We use three different models based on two different techniques: radial velocity measurements of the Rossiter-McLaughlin effect, and Doppler tomography. Our comparison of the different models reveals that they produce projected stellar rotation velocities (vvsin Is) measurements often in disagreement with each other and with estimates obtained from spectral line broadening. The Boué model for the Rossiter-McLaughlin effect consistently underestimates the value of vvsin Is compared to the Hirano model. Although vvsin Is differed, the effect on λ was small for our sample, with all three methods producing values in agreement with each other. Using Doppler tomography, we find that WASP-61 b (λ=4.0∘+17.1−18.4λ=4.0−18.4∘+17.1), WASP-71 b (λ=−1.9∘+7.1−7.5λ=−1.9−7.5∘+7.1), and WASP-78 b (λ = −6.4° ± 5.9) are aligned. WASP-62 b (λ=19.4∘+5.1−4.9λ=19.4−4.9∘+5.1) is found to be slightly misaligned, while WASP-79 b (λ=−95.2∘+0.9−1.0λ=−95.2−1.0∘+0.9) is confirmed to be strongly misaligned and has a retrograde orbit. We explore a range of possibilities for the orbit of WASP-76 b, finding that the orbit is likely to be strongly misaligned in the positive λ direction.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Planetary systems, Stars -- Rotation, Photometry
Journal or Publication Title: Monthly Notices of the Royal Astronomical Society
Publisher: Oxford University Press
ISSN: 0035-8711
Official Date: 1 January 2017
Dates:
DateEvent
1 January 2017Published
15 September 2016Available
12 September 2016Accepted
Date of first compliant deposit: 11 October 2016
Volume: 464
Number: 1
Page Range: pp. 810-839
DOI: 10.1093/mnras/stw2316
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
Funder: University of Warwick, University of Keele, University of St. Andrews, Royal Greenwich Observatory. Isaac Newton Group of Telescopes (Santa Cruz de la Palma, Canary Islands), Instituto de Astrofísica de Canarias, Observatoire de Haute-Provence, UK Space Agency (UKSA), Seventh Framework Programme (European Commission) (FP7), Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung [Swiss National Science Foundation] (SNSF), United States. National Aeronautics and Space Administration (NASA)
Grant number: Grant agreement 313014 (ETAEARTH) (FP7), PBGEP2-145594 (SNSF)

Request changes or add full text files to a record

Repository staff actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics

twitter

Email us: wrap@warwick.ac.uk
Contact Details
About Us