Do falling planets cause stellar spin-up?

D. J. A. Brown; A. Collier Cameron; C. Hall; L. Hebb

doi:10.1017/S1743921311020308

Do falling planets cause stellar spin-up?

D. J. A. Brown^*, A. Collier Cameron, C. Hall, L. Hebb

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We investigate the tidal interactions between hot Jupiter extra-solar planets and their host stars in an effort to characterise the effects of such interactions On stellar rotation. We study the WASP-18 and WASP-19 systems, showing that in both cases tidal interactions cause the eventual spiral in of the the planet towards the Roche limit. We find that for both systems this process will cause significant spin up of the host star, independent of the precise value for the tidal quality factors. By fitting tidal evolution models to observed parameters, we are able to determine that WASP-19 b is currently spiralling in, and that it has a very short remaining lifetime similar to 3 Myr.

Original language	English
Title of host publication	ASTROPHYSICS OF PLANETARY SYSTEMS: FORMATION, STRUCTURE, AND DYNAMICAL EVOLUTION
Editors	A Sozzetti, MG Lattanzi, AP Boss
Publisher	Cambridge University Press
Pages	267-270
Number of pages	4
ISBN (Print)	978-0-521-19652-9
DOIs	https://doi.org/10.1017/S1743921311020308
Publication status	Published - 2011
Event	276th Symposium of the International-Astronomical-Union on Astrophysics of Planetary Systems: Formation, Structure, and Dynamical Evolution - Torino, Italy Duration: 10 Oct 2010 → 15 Oct 2010

Publication series

Name	IAU Symposium Proceedings Series
Publisher	CAMBRIDGE UNIV PRESS
Volume	276
ISSN (Print)	1743-9213

Conference

Conference	276th Symposium of the International-Astronomical-Union on Astrophysics of Planetary Systems: Formation, Structure, and Dynamical Evolution
Country/Territory	Italy
Period	10/10/10 → 15/10/10

Keywords

stars: rotation
stars: activity
planetary systems
EVOLUTION
GYROCHRONOLOGY

Access to Document

10.1017/S1743921311020308

Wide Area Search for Planets: Project support for the Wide Area Search for Planets
Cameron, A. C. (PI)
Science & Technology Facilities Council
1/08/08 → 31/07/11
Project: Standard

Cite this

@inproceedings{34cbc4b38dd14b93b4876ac1d8315cf6,

title = "Do falling planets cause stellar spin-up?",

abstract = "We investigate the tidal interactions between hot Jupiter extra-solar planets and their host stars in an effort to characterise the effects of such interactions On stellar rotation. We study the WASP-18 and WASP-19 systems, showing that in both cases tidal interactions cause the eventual spiral in of the the planet towards the Roche limit. We find that for both systems this process will cause significant spin up of the host star, independent of the precise value for the tidal quality factors. By fitting tidal evolution models to observed parameters, we are able to determine that WASP-19 b is currently spiralling in, and that it has a very short remaining lifetime similar to 3 Myr.",

keywords = "stars: rotation, stars: activity, planetary systems, EVOLUTION, GYROCHRONOLOGY",

author = "Brown, {D. J. A.} and Cameron, {A. Collier} and C. Hall and L. Hebb",

year = "2011",

doi = "10.1017/S1743921311020308",

language = "English",

isbn = "978-0-521-19652-9",

series = "IAU Symposium Proceedings Series",

publisher = "Cambridge University Press",

pages = "267--270",

editor = "A Sozzetti and MG Lattanzi and AP Boss",

booktitle = "ASTROPHYSICS OF PLANETARY SYSTEMS: FORMATION, STRUCTURE, AND DYNAMICAL EVOLUTION",

address = "United Kingdom",

note = "276th Symposium of the International-Astronomical-Union on Astrophysics of Planetary Systems: Formation, Structure, and Dynamical Evolution ; Conference date: 10-10-2010 Through 15-10-2010",

}

Brown, DJA, Cameron, AC, Hall, C & Hebb, L 2011, Do falling planets cause stellar spin-up? in A Sozzetti, MG Lattanzi & AP Boss (eds), ASTROPHYSICS OF PLANETARY SYSTEMS: FORMATION, STRUCTURE, AND DYNAMICAL EVOLUTION. IAU Symposium Proceedings Series, vol. 276, Cambridge University Press, pp. 267-270, 276th Symposium of the International-Astronomical-Union on Astrophysics of Planetary Systems: Formation, Structure, and Dynamical Evolution, Italy, 10/10/10. https://doi.org/10.1017/S1743921311020308

Do falling planets cause stellar spin-up? / Brown, D. J. A.; Cameron, A. Collier; Hall, C. et al.
ASTROPHYSICS OF PLANETARY SYSTEMS: FORMATION, STRUCTURE, AND DYNAMICAL EVOLUTION. ed. / A Sozzetti; MG Lattanzi; AP Boss. Cambridge University Press, 2011. p. 267-270 (IAU Symposium Proceedings Series; Vol. 276).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution