The spin-orbit angle of the transiting hot Jupiter CoRoT-1b

F. Pont; M. Endl; W. D. Cochran; S. I. Barnes; C. Sneden; P. J. MacQueen; C. Moutou; S. Aigrain; R. Alonso; A. Baglin; F. Bouchy; M. Deleuil; M. Fridlund; G. Hébrard; A. Hatzes; T. Mazeh; A. Shporer

doi:10.1111/j.1745-3933.2009.00785.x

The spin-orbit angle of the transiting hot Jupiter CoRoT-1b

F. Pont^*, M. Endl, W. D. Cochran, S. I. Barnes, C. Sneden, P. J. MacQueen, C. Moutou, S. Aigrain, R. Alonso, A. Baglin, F. Bouchy, M. Deleuil, M. Fridlund, G. Hébrard, A. Hatzes, T. Mazeh, A. Shporer

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Letter › peer-review

Abstract

We measure the angle between the planetary orbit and the stellar rotation axis in the transiting planetary system CoRoT-1, with new HIRES/Keck and FORS/VLT high-accuracy photometry. The data indicate a highly tilted system, with a projected spin-orbit angle λ = 77° ± 11°. Systematic uncertainties in the radial velocity data could cause the actual errors to be larger by an unknown amount, and this result needs to be confirmed with further high-accuracy spectroscopic transit measurements. Spin-orbit alignment has now been measured in a dozen extra-solar planetary systems, and several show strong misalignment. The first three misaligned planets were all much more massive than Jupiter and followed eccentric orbits. CoRoT-1, however, is a jovian-mass close-in planet on a circular orbit. If its strong misalignment is confirmed, it would break this pattern. The high occurrence of misaligned systems for several types of planets and orbits favours planet-planet scattering as a mechanism to bring gas giants on very close orbits.

Original language	English
Pages (from-to)	L1-L5
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	402
Issue number	1
DOIs	https://doi.org/10.1111/j.1745-3933.2009.00785.x
State	Published - Feb 2010

Keywords

Planetary systems
Stars: individual: CoRoT-Exo-1, CoRoT-1
Techniques: photometric
Techniques: radial velocities

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10.1111/j.1745-3933.2009.00785.x

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Pont, F., Endl, M., Cochran, W. D., Barnes, S. I., Sneden, C., MacQueen, P. J., Moutou, C., Aigrain, S., Alonso, R., Baglin, A., Bouchy, F., Deleuil, M., Fridlund, M., Hébrard, G., Hatzes, A., Mazeh, T., & Shporer, A. (2010). The spin-orbit angle of the transiting hot Jupiter CoRoT-1b. Monthly Notices of the Royal Astronomical Society: Letters, 402(1), L1-L5. https://doi.org/10.1111/j.1745-3933.2009.00785.x

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title = "The spin-orbit angle of the transiting hot Jupiter CoRoT-1b",

abstract = "We measure the angle between the planetary orbit and the stellar rotation axis in the transiting planetary system CoRoT-1, with new HIRES/Keck and FORS/VLT high-accuracy photometry. The data indicate a highly tilted system, with a projected spin-orbit angle λ = 77° ± 11°. Systematic uncertainties in the radial velocity data could cause the actual errors to be larger by an unknown amount, and this result needs to be confirmed with further high-accuracy spectroscopic transit measurements. Spin-orbit alignment has now been measured in a dozen extra-solar planetary systems, and several show strong misalignment. The first three misaligned planets were all much more massive than Jupiter and followed eccentric orbits. CoRoT-1, however, is a jovian-mass close-in planet on a circular orbit. If its strong misalignment is confirmed, it would break this pattern. The high occurrence of misaligned systems for several types of planets and orbits favours planet-planet scattering as a mechanism to bring gas giants on very close orbits.",

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author = "F. Pont and M. Endl and Cochran, {W. D.} and Barnes, {S. I.} and C. Sneden and MacQueen, {P. J.} and C. Moutou and S. Aigrain and R. Alonso and A. Baglin and F. Bouchy and M. Deleuil and M. Fridlund and G. H{\'e}brard and A. Hatzes and T. Mazeh and A. Shporer",

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doi = "10.1111/j.1745-3933.2009.00785.x",

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Pont, F, Endl, M, Cochran, WD, Barnes, SI, Sneden, C, MacQueen, PJ, Moutou, C, Aigrain, S, Alonso, R, Baglin, A, Bouchy, F, Deleuil, M, Fridlund, M, Hébrard, G, Hatzes, A, Mazeh, T & Shporer, A 2010, 'The spin-orbit angle of the transiting hot Jupiter CoRoT-1b', Monthly Notices of the Royal Astronomical Society: Letters, vol. 402, no. 1, pp. L1-L5. https://doi.org/10.1111/j.1745-3933.2009.00785.x

TY - JOUR

T1 - The spin-orbit angle of the transiting hot Jupiter CoRoT-1b

AU - Pont, F.

AU - Endl, M.

AU - Cochran, W. D.

AU - Barnes, S. I.

AU - Sneden, C.

AU - MacQueen, P. J.

AU - Moutou, C.

AU - Aigrain, S.

AU - Alonso, R.

AU - Baglin, A.

AU - Bouchy, F.

AU - Deleuil, M.

AU - Fridlund, M.

AU - Hébrard, G.

AU - Hatzes, A.

AU - Mazeh, T.

AU - Shporer, A.

PY - 2010/2

Y1 - 2010/2

N2 - We measure the angle between the planetary orbit and the stellar rotation axis in the transiting planetary system CoRoT-1, with new HIRES/Keck and FORS/VLT high-accuracy photometry. The data indicate a highly tilted system, with a projected spin-orbit angle λ = 77° ± 11°. Systematic uncertainties in the radial velocity data could cause the actual errors to be larger by an unknown amount, and this result needs to be confirmed with further high-accuracy spectroscopic transit measurements. Spin-orbit alignment has now been measured in a dozen extra-solar planetary systems, and several show strong misalignment. The first three misaligned planets were all much more massive than Jupiter and followed eccentric orbits. CoRoT-1, however, is a jovian-mass close-in planet on a circular orbit. If its strong misalignment is confirmed, it would break this pattern. The high occurrence of misaligned systems for several types of planets and orbits favours planet-planet scattering as a mechanism to bring gas giants on very close orbits.

AB - We measure the angle between the planetary orbit and the stellar rotation axis in the transiting planetary system CoRoT-1, with new HIRES/Keck and FORS/VLT high-accuracy photometry. The data indicate a highly tilted system, with a projected spin-orbit angle λ = 77° ± 11°. Systematic uncertainties in the radial velocity data could cause the actual errors to be larger by an unknown amount, and this result needs to be confirmed with further high-accuracy spectroscopic transit measurements. Spin-orbit alignment has now been measured in a dozen extra-solar planetary systems, and several show strong misalignment. The first three misaligned planets were all much more massive than Jupiter and followed eccentric orbits. CoRoT-1, however, is a jovian-mass close-in planet on a circular orbit. If its strong misalignment is confirmed, it would break this pattern. The high occurrence of misaligned systems for several types of planets and orbits favours planet-planet scattering as a mechanism to bring gas giants on very close orbits.

KW - Planetary systems

KW - Stars: individual: CoRoT-Exo-1, CoRoT-1

KW - Techniques: photometric

KW - Techniques: radial velocities

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U2 - 10.1111/j.1745-3933.2009.00785.x

DO - 10.1111/j.1745-3933.2009.00785.x

M3 - מזכר

AN - SCOPUS:77954867990

VL - 402

SP - L1-L5

JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

SN - 1745-3925

IS - 1

ER -

The spin-orbit angle of the transiting hot Jupiter CoRoT-1b

Abstract

Keywords

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