Nearly polar orbit of the sub-Neptune HD 3167 c: Constraints on the dynamical history of a multi-planet system

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Standard

Nearly polar orbit of the sub-Neptune HD 3167 c : Constraints on the dynamical history of a multi-planet system. / Dalal, S.; Hébrard, G.; des Étangs, A. Lecavelier; Petit, A. C.; Bourrier, V.; Laskar, J.; König, P.-C.; Correia, A. C. M.

In: Astronomy and Astrophysics, Vol. 631, A28, 2019.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Dalal, S, Hébrard, G, des Étangs, AL, Petit, AC, Bourrier, V, Laskar, J, König, P-C & Correia, ACM 2019, 'Nearly polar orbit of the sub-Neptune HD 3167 c: Constraints on the dynamical history of a multi-planet system', Astronomy and Astrophysics, vol. 631, A28. https://doi.org/10.1051/0004-6361/201935944

APA

Dalal, S., Hébrard, G., des Étangs, A. L., Petit, A. C., Bourrier, V., Laskar, J., König, P-C., & Correia, A. C. M. (2019). Nearly polar orbit of the sub-Neptune HD 3167 c: Constraints on the dynamical history of a multi-planet system. Astronomy and Astrophysics, 631, [A28]. https://doi.org/10.1051/0004-6361/201935944

Vancouver

Dalal S, Hébrard G, des Étangs AL, Petit AC, Bourrier V, Laskar J et al. Nearly polar orbit of the sub-Neptune HD 3167 c: Constraints on the dynamical history of a multi-planet system. Astronomy and Astrophysics. 2019;631. A28. https://doi.org/10.1051/0004-6361/201935944

Author

Dalal, S. ; Hébrard, G. ; des Étangs, A. Lecavelier ; Petit, A. C. ; Bourrier, V. ; Laskar, J. ; König, P.-C. ; Correia, A. C. M. / Nearly polar orbit of the sub-Neptune HD 3167 c : Constraints on the dynamical history of a multi-planet system. In: Astronomy and Astrophysics. 2019 ; Vol. 631.

Bibtex

@article{f34ad44bf94c400ab922c8ad9ab4b974,
title = "Nearly polar orbit of the sub-Neptune HD 3167 c: Constraints on the dynamical history of a multi-planet system",
abstract = "Aims. We present the obliquity measurement, that is, the angle between the normal angle of the orbital plane and the stellar spin axis, of the sub-Neptune planet HD 3167 c, which transits a bright nearby K0 star. We study the orbital architecture of this multi-planet system to understand its dynamical history. We also place constraints on the obliquity of planet d based on the geometry of the planetary system and the dynamical study of the system. Methods. New observations obtained with HARPS-N at the Telescopio Nazionale Galileo (TNG) were employed for our analysis. The sky-projected obliquity was measured using three different methods: the Rossiter-McLaughlin anomaly, Doppler tomography, and reloaded Rossiter-McLaughlin techniques. We performed the stability analysis of the system and investigated the dynamical interactions between the planets and the star. Results. HD 3167 c is found to be nearly polar with sky-projected obliquity, λ =-97°± 23°. This misalignment of the orbit of planet c with the spin axis of the host star is detected with 97% confidence. The analysis of the dynamics of this system yields coplanar orbits of planets c and d. It also shows that it is unlikely that the currently observed system can generate this high obliquity for planets c and d by itself. However, the polar orbits of planets c and d could be explained by the presence of an outer companion in the system. Follow-up observations of the system are required to confirm such a long-period companion.",
keywords = "Planet-star interactions, Planets and satellites: fundamental parameters, Planets and satellites: individual: HD 3167, Techniques: radial velocities",
author = "S. Dalal and G. H{\'e}brard and {des {\'E}tangs}, {A. Lecavelier} and Petit, {A. C.} and V. Bourrier and J. Laskar and P.-C. K{\"o}nig and Correia, {A. C. M.}",
note = "Publisher Copyright: {\textcopyright} 2019 S. Dalal et al.",
year = "2019",
doi = "10.1051/0004-6361/201935944",
language = "English",
volume = "631",
journal = "Astronomy & Astrophysics",
issn = "0004-6361",
publisher = "E D P Sciences",

}

RIS

TY - JOUR

T1 - Nearly polar orbit of the sub-Neptune HD 3167 c

T2 - Constraints on the dynamical history of a multi-planet system

AU - Dalal, S.

AU - Hébrard, G.

AU - des Étangs, A. Lecavelier

AU - Petit, A. C.

AU - Bourrier, V.

AU - Laskar, J.

AU - König, P.-C.

AU - Correia, A. C. M.

N1 - Publisher Copyright: © 2019 S. Dalal et al.

PY - 2019

Y1 - 2019

N2 - Aims. We present the obliquity measurement, that is, the angle between the normal angle of the orbital plane and the stellar spin axis, of the sub-Neptune planet HD 3167 c, which transits a bright nearby K0 star. We study the orbital architecture of this multi-planet system to understand its dynamical history. We also place constraints on the obliquity of planet d based on the geometry of the planetary system and the dynamical study of the system. Methods. New observations obtained with HARPS-N at the Telescopio Nazionale Galileo (TNG) were employed for our analysis. The sky-projected obliquity was measured using three different methods: the Rossiter-McLaughlin anomaly, Doppler tomography, and reloaded Rossiter-McLaughlin techniques. We performed the stability analysis of the system and investigated the dynamical interactions between the planets and the star. Results. HD 3167 c is found to be nearly polar with sky-projected obliquity, λ =-97°± 23°. This misalignment of the orbit of planet c with the spin axis of the host star is detected with 97% confidence. The analysis of the dynamics of this system yields coplanar orbits of planets c and d. It also shows that it is unlikely that the currently observed system can generate this high obliquity for planets c and d by itself. However, the polar orbits of planets c and d could be explained by the presence of an outer companion in the system. Follow-up observations of the system are required to confirm such a long-period companion.

AB - Aims. We present the obliquity measurement, that is, the angle between the normal angle of the orbital plane and the stellar spin axis, of the sub-Neptune planet HD 3167 c, which transits a bright nearby K0 star. We study the orbital architecture of this multi-planet system to understand its dynamical history. We also place constraints on the obliquity of planet d based on the geometry of the planetary system and the dynamical study of the system. Methods. New observations obtained with HARPS-N at the Telescopio Nazionale Galileo (TNG) were employed for our analysis. The sky-projected obliquity was measured using three different methods: the Rossiter-McLaughlin anomaly, Doppler tomography, and reloaded Rossiter-McLaughlin techniques. We performed the stability analysis of the system and investigated the dynamical interactions between the planets and the star. Results. HD 3167 c is found to be nearly polar with sky-projected obliquity, λ =-97°± 23°. This misalignment of the orbit of planet c with the spin axis of the host star is detected with 97% confidence. The analysis of the dynamics of this system yields coplanar orbits of planets c and d. It also shows that it is unlikely that the currently observed system can generate this high obliquity for planets c and d by itself. However, the polar orbits of planets c and d could be explained by the presence of an outer companion in the system. Follow-up observations of the system are required to confirm such a long-period companion.

KW - Planet-star interactions

KW - Planets and satellites: fundamental parameters

KW - Planets and satellites: individual: HD 3167

KW - Techniques: radial velocities

U2 - 10.1051/0004-6361/201935944

DO - 10.1051/0004-6361/201935944

M3 - Journal article

AN - SCOPUS:85081691570

VL - 631

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

SN - 0004-6361

M1 - A28

ER -

ID: 327139453