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Mikkel Nørup Lund

Spin–Orbit Alignment of Exoplanet Systems: Ensemble Analysis Using Asteroseismology

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Spin–Orbit Alignment of Exoplanet Systems: Ensemble Analysis Using Asteroseismology. / Campante, T. L.; Lund, M. N.; Kuszlewicz, James S.; Davies, G. R.; Chaplin, W. J.; Albrecht, S.; Winn, J. N.; Bedding, T. R.; Benomar, O.; Bossini, D.; Handberg, R.; Santos, A. R. G.; Eylen, V. Van; Basu, S.; Christensen-Dalsgaard, J.; Elsworth, Y. P.; Hekker, S.; Hirano, T.; Huber, D.; Karoff, C.; Kjeldsen, Hans; Lundkvist, M. S.; North, T. S. H.; Aguirre, V. Silva; Stello, D.; White, T. R.

I: The Astrophysical Journal, Bind 819, Nr. 1, 2016, s. 85.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

Campante, TL, Lund, MN, Kuszlewicz, JS, Davies, GR, Chaplin, WJ, Albrecht, S, Winn, JN, Bedding, TR, Benomar, O, Bossini, D, Handberg, R, Santos, ARG, Eylen, VV, Basu, S, Christensen-Dalsgaard, J, Elsworth, YP, Hekker, S, Hirano, T, Huber, D, Karoff, C, Kjeldsen, H, Lundkvist, MS, North, TSH, Aguirre, VS, Stello, D & White, TR 2016, 'Spin–Orbit Alignment of Exoplanet Systems: Ensemble Analysis Using Asteroseismology', The Astrophysical Journal, bind 819, nr. 1, s. 85. <https://arxiv.org/pdf/1601.06052.pdf>

APA

Campante, T. L., Lund, M. N., Kuszlewicz, J. S., Davies, G. R., Chaplin, W. J., Albrecht, S., Winn, J. N., Bedding, T. R., Benomar, O., Bossini, D., Handberg, R., Santos, A. R. G., Eylen, V. V., Basu, S., Christensen-Dalsgaard, J., Elsworth, Y. P., Hekker, S., Hirano, T., Huber, D., ... White, T. R. (2016). Spin–Orbit Alignment of Exoplanet Systems: Ensemble Analysis Using Asteroseismology. The Astrophysical Journal, 819(1), 85. https://arxiv.org/pdf/1601.06052.pdf

CBE

Campante TL, Lund MN, Kuszlewicz JS, Davies GR, Chaplin WJ, Albrecht S, Winn JN, Bedding TR, Benomar O, Bossini D, Handberg R, Santos ARG, Eylen VV, Basu S, Christensen-Dalsgaard J, Elsworth YP, Hekker S, Hirano T, Huber D, Karoff C, Kjeldsen H, Lundkvist MS, North TSH, Aguirre VS, Stello D, White TR. 2016. Spin–Orbit Alignment of Exoplanet Systems: Ensemble Analysis Using Asteroseismology. The Astrophysical Journal. 819(1):85.

MLA

Campante, T. L. o.a.. "Spin–Orbit Alignment of Exoplanet Systems: Ensemble Analysis Using Asteroseismology". The Astrophysical Journal. 2016, 819(1). 85.

Vancouver

Campante TL, Lund MN, Kuszlewicz JS, Davies GR, Chaplin WJ, Albrecht S o.a. Spin–Orbit Alignment of Exoplanet Systems: Ensemble Analysis Using Asteroseismology. The Astrophysical Journal. 2016;819(1):85.

Author

Campante, T. L. ; Lund, M. N. ; Kuszlewicz, James S. ; Davies, G. R. ; Chaplin, W. J. ; Albrecht, S. ; Winn, J. N. ; Bedding, T. R. ; Benomar, O. ; Bossini, D. ; Handberg, R. ; Santos, A. R. G. ; Eylen, V. Van ; Basu, S. ; Christensen-Dalsgaard, J. ; Elsworth, Y. P. ; Hekker, S. ; Hirano, T. ; Huber, D. ; Karoff, C. ; Kjeldsen, Hans ; Lundkvist, M. S. ; North, T. S. H. ; Aguirre, V. Silva ; Stello, D. ; White, T. R. / Spin–Orbit Alignment of Exoplanet Systems: Ensemble Analysis Using Asteroseismology. I: The Astrophysical Journal. 2016 ; Bind 819, Nr. 1. s. 85.

Bibtex

@article{77936fd919bb48feb5ff69e48abad2eb,
title = "Spin–Orbit Alignment of Exoplanet Systems: Ensemble Analysis Using Asteroseismology",
abstract = "The angle ψ between a planet{\textquoteright}s orbital axis and the spin axis of its parent star is an important diagnostic of planet formation, migration, and tidal evolution. We seek empirical constraints on ψ by measuring the stellar inclination i s via asteroseismology for an ensemble of 25 solar-type hosts observed with NASA{\textquoteright}s Kepler satellite. Our results for i s are consistent with alignment at the 2 σ level for all stars in the sample, meaning that the system surrounding the red-giant star Kepler-56 remains as the only unambiguous misaligned multiple-planet system detected to date. The availability of a measurement of the projected spin–orbit angle λ for two of the systems allows us to estimate ψ . We find that the orbit of the hot Jupiter HAT-P-7b is likely to be retrograde ( ##IMG## [http://ej.iop.org/images/0004-637X/819/1/85/apj522683ieqn1.gif] $psi =116rc. 4_-14.7^+30.2$ ), whereas that of Kepler-25c seems to be well aligned with the stellar spin axis ( ##IMG## [http://ej.iop.org/images/0004-637X/819/1/85/apj522683ieqn2.gif] $psi =12rc. 6_-11.0^+6.7$ ). While the latter result is in apparent contradiction with a statement made previously in the literature that the multi-transiting system Kepler-25 is misaligned, we show that the results are consistent, given the large associated uncertainties. Finally, we perform a hierarchical Bayesian analysis based on the asteroseismic sample in order to recover the underlying distribution of ψ . The ensemble analysis suggests that the directions of the stellar spin and planetary orbital axes are correlated, as conveyed by a tendency of the host stars to display large values of inclination.",
author = "Campante, {T. L.} and Lund, {M. N.} and Kuszlewicz, {James S.} and Davies, {G. R.} and Chaplin, {W. J.} and S. Albrecht and Winn, {J. N.} and Bedding, {T. R.} and O. Benomar and D. Bossini and R. Handberg and Santos, {A. R. G.} and Eylen, {V. Van} and S. Basu and J. Christensen-Dalsgaard and Elsworth, {Y. P.} and S. Hekker and T. Hirano and D. Huber and C. Karoff and Hans Kjeldsen and Lundkvist, {M. S.} and North, {T. S. H.} and Aguirre, {V. Silva} and D. Stello and White, {T. R.}",
year = "2016",
language = "Udefineret/Ukendt",
volume = "819",
pages = "85",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing, Inc",
number = "1",

}

RIS

TY - JOUR

T1 - Spin–Orbit Alignment of Exoplanet Systems: Ensemble Analysis Using Asteroseismology

AU - Campante, T. L.

AU - Lund, M. N.

AU - Kuszlewicz, James S.

AU - Davies, G. R.

AU - Chaplin, W. J.

AU - Albrecht, S.

AU - Winn, J. N.

AU - Bedding, T. R.

AU - Benomar, O.

AU - Bossini, D.

AU - Handberg, R.

AU - Santos, A. R. G.

AU - Eylen, V. Van

AU - Basu, S.

AU - Christensen-Dalsgaard, J.

AU - Elsworth, Y. P.

AU - Hekker, S.

AU - Hirano, T.

AU - Huber, D.

AU - Karoff, C.

AU - Kjeldsen, Hans

AU - Lundkvist, M. S.

AU - North, T. S. H.

AU - Aguirre, V. Silva

AU - Stello, D.

AU - White, T. R.

PY - 2016

Y1 - 2016

N2 - The angle ψ between a planet’s orbital axis and the spin axis of its parent star is an important diagnostic of planet formation, migration, and tidal evolution. We seek empirical constraints on ψ by measuring the stellar inclination i s via asteroseismology for an ensemble of 25 solar-type hosts observed with NASA’s Kepler satellite. Our results for i s are consistent with alignment at the 2 σ level for all stars in the sample, meaning that the system surrounding the red-giant star Kepler-56 remains as the only unambiguous misaligned multiple-planet system detected to date. The availability of a measurement of the projected spin–orbit angle λ for two of the systems allows us to estimate ψ . We find that the orbit of the hot Jupiter HAT-P-7b is likely to be retrograde ( ##IMG## [http://ej.iop.org/images/0004-637X/819/1/85/apj522683ieqn1.gif] $psi =116rc. 4_-14.7^+30.2$ ), whereas that of Kepler-25c seems to be well aligned with the stellar spin axis ( ##IMG## [http://ej.iop.org/images/0004-637X/819/1/85/apj522683ieqn2.gif] $psi =12rc. 6_-11.0^+6.7$ ). While the latter result is in apparent contradiction with a statement made previously in the literature that the multi-transiting system Kepler-25 is misaligned, we show that the results are consistent, given the large associated uncertainties. Finally, we perform a hierarchical Bayesian analysis based on the asteroseismic sample in order to recover the underlying distribution of ψ . The ensemble analysis suggests that the directions of the stellar spin and planetary orbital axes are correlated, as conveyed by a tendency of the host stars to display large values of inclination.

AB - The angle ψ between a planet’s orbital axis and the spin axis of its parent star is an important diagnostic of planet formation, migration, and tidal evolution. We seek empirical constraints on ψ by measuring the stellar inclination i s via asteroseismology for an ensemble of 25 solar-type hosts observed with NASA’s Kepler satellite. Our results for i s are consistent with alignment at the 2 σ level for all stars in the sample, meaning that the system surrounding the red-giant star Kepler-56 remains as the only unambiguous misaligned multiple-planet system detected to date. The availability of a measurement of the projected spin–orbit angle λ for two of the systems allows us to estimate ψ . We find that the orbit of the hot Jupiter HAT-P-7b is likely to be retrograde ( ##IMG## [http://ej.iop.org/images/0004-637X/819/1/85/apj522683ieqn1.gif] $psi =116rc. 4_-14.7^+30.2$ ), whereas that of Kepler-25c seems to be well aligned with the stellar spin axis ( ##IMG## [http://ej.iop.org/images/0004-637X/819/1/85/apj522683ieqn2.gif] $psi =12rc. 6_-11.0^+6.7$ ). While the latter result is in apparent contradiction with a statement made previously in the literature that the multi-transiting system Kepler-25 is misaligned, we show that the results are consistent, given the large associated uncertainties. Finally, we perform a hierarchical Bayesian analysis based on the asteroseismic sample in order to recover the underlying distribution of ψ . The ensemble analysis suggests that the directions of the stellar spin and planetary orbital axes are correlated, as conveyed by a tendency of the host stars to display large values of inclination.

M3 - Tidsskriftartikel

VL - 819

SP - 85

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1

ER -