The Rossiter-McLaughlin effect of CoRoT-3b and HD189733b

A. H.M.J. Triaud; D. Queloz; F. Bouchy; C. Moutou; A. C. Cameron; A. Claret; P. Barge; W. Benz; M. Deleuil; T. Guillot; G. Hébrard; A. Lecavelier Des Étangs; C. Lovis; M. Mayor; F. Pepe; S. Udry

doi:10.1051/0004-6361/200911897

The Rossiter-McLaughlin effect of CoRoT-3b and HD189733b

A. H.M.J. Triaud
, D. Queloz
, F. Bouchy
, C. Moutou
, A. C. Cameron
, A. Claret
, P. Barge
, W. Benz
, M. Deleuil
, T. Guillot
, G. Hébrard
, A. Lecavelier Des Étangs
, C. Lovis
, M. Mayor
, F. Pepe
, S. Udry

University of Geneva
Institut d’Astrophysique de Paris
Observatoire de Haute-Provence
LAM
School of Physics and Astronomy
University of St Andrews
Instituto de Astrofísica de Andalucía-CSIC
Climate and Environmental Physics
University of Bern
Université de Nice

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

158 Citations (Scopus)

Abstract

We present radial-velocity sequences acquired during three transits of the exoplanet HD189733b and one transit of CoRoT-3b. We applied a combined Markov-chain Monte-Carlo analysis of spectroscopic and photometric data on these stars, to determine a full set of system parameters including the projected spin-orbit misalignment angle of HD189733b to an unprecedented precision via the Rossiter-McLaughlin effect: β = 0.85°^+0.32_-0.28. This small but non-zero inclination of the planetary orbit is important to understand the origin of the system. On CoRoT-3b, results seem to point towards a non-zero inclination as well with β = 37.6°^+10.0_-22.3, but this remains marginal. Systematic effects due to non-Gaussian cross-correlation functions appear to be the main cause of significant residuals that prevent an accurate determination of the projected stellar rotation velocity V sin(I) for both stars.

Original language	English
Pages (from-to)	377-384
Number of pages	8
Journal	Astronomy and Astrophysics
Volume	506
Issue number	1
DOIs	https://doi.org/10.1051/0004-6361/200911897
Publication status	Published - 1 Jan 2009
Externally published	Yes

Keywords

Binaries: eclipsing
Planetary systems
Stars: individual: CoRoT-3b, HD189733
Techniques: photometric
Techniques: radial velocities

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10.1051/0004-6361/200911897

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Triaud, A. H. M. J., Queloz, D., Bouchy, F., Moutou, C., Cameron, A. C., Claret, A., Barge, P., Benz, W., Deleuil, M., Guillot, T., Hébrard, G., Lecavelier Des Étangs, A., Lovis, C., Mayor, M., Pepe, F., & Udry, S. (2009). The Rossiter-McLaughlin effect of CoRoT-3b and HD189733b. Astronomy and Astrophysics, 506(1), 377-384. https://doi.org/10.1051/0004-6361/200911897

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title = "The Rossiter-McLaughlin effect of CoRoT-3b and HD189733b",

abstract = "We present radial-velocity sequences acquired during three transits of the exoplanet HD189733b and one transit of CoRoT-3b. We applied a combined Markov-chain Monte-Carlo analysis of spectroscopic and photometric data on these stars, to determine a full set of system parameters including the projected spin-orbit misalignment angle of HD189733b to an unprecedented precision via the Rossiter-McLaughlin effect: β = 0.85°+0.32-0.28. This small but non-zero inclination of the planetary orbit is important to understand the origin of the system. On CoRoT-3b, results seem to point towards a non-zero inclination as well with β = 37.6°+10.0-22.3, but this remains marginal. Systematic effects due to non-Gaussian cross-correlation functions appear to be the main cause of significant residuals that prevent an accurate determination of the projected stellar rotation velocity V sin(I) for both stars.",

keywords = "Binaries: eclipsing, Planetary systems, Stars: individual: CoRoT-3b, HD189733, Techniques: photometric, Techniques: radial velocities",

author = "Triaud, \{A. H.M.J.\} and D. Queloz and F. Bouchy and C. Moutou and Cameron, \{A. C.\} and A. Claret and P. Barge and W. Benz and M. Deleuil and T. Guillot and G. H{\'e}brard and \{Lecavelier Des {\'E}tangs\}, A. and C. Lovis and M. Mayor and F. Pepe and S. Udry",

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doi = "10.1051/0004-6361/200911897",

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TY - JOUR

T1 - The Rossiter-McLaughlin effect of CoRoT-3b and HD189733b

AU - Triaud, A. H.M.J.

AU - Queloz, D.

AU - Bouchy, F.

AU - Moutou, C.

AU - Cameron, A. C.

AU - Claret, A.

AU - Barge, P.

AU - Benz, W.

AU - Deleuil, M.

AU - Guillot, T.

AU - Hébrard, G.

AU - Lecavelier Des Étangs, A.

AU - Lovis, C.

AU - Mayor, M.

AU - Pepe, F.

AU - Udry, S.

PY - 2009/1/1

Y1 - 2009/1/1

N2 - We present radial-velocity sequences acquired during three transits of the exoplanet HD189733b and one transit of CoRoT-3b. We applied a combined Markov-chain Monte-Carlo analysis of spectroscopic and photometric data on these stars, to determine a full set of system parameters including the projected spin-orbit misalignment angle of HD189733b to an unprecedented precision via the Rossiter-McLaughlin effect: β = 0.85°+0.32-0.28. This small but non-zero inclination of the planetary orbit is important to understand the origin of the system. On CoRoT-3b, results seem to point towards a non-zero inclination as well with β = 37.6°+10.0-22.3, but this remains marginal. Systematic effects due to non-Gaussian cross-correlation functions appear to be the main cause of significant residuals that prevent an accurate determination of the projected stellar rotation velocity V sin(I) for both stars.

AB - We present radial-velocity sequences acquired during three transits of the exoplanet HD189733b and one transit of CoRoT-3b. We applied a combined Markov-chain Monte-Carlo analysis of spectroscopic and photometric data on these stars, to determine a full set of system parameters including the projected spin-orbit misalignment angle of HD189733b to an unprecedented precision via the Rossiter-McLaughlin effect: β = 0.85°+0.32-0.28. This small but non-zero inclination of the planetary orbit is important to understand the origin of the system. On CoRoT-3b, results seem to point towards a non-zero inclination as well with β = 37.6°+10.0-22.3, but this remains marginal. Systematic effects due to non-Gaussian cross-correlation functions appear to be the main cause of significant residuals that prevent an accurate determination of the projected stellar rotation velocity V sin(I) for both stars.

KW - Binaries: eclipsing

KW - Planetary systems

KW - Stars: individual: CoRoT-3b, HD189733

KW - Techniques: photometric

KW - Techniques: radial velocities

U2 - 10.1051/0004-6361/200911897

DO - 10.1051/0004-6361/200911897

M3 - Article

AN - SCOPUS:84977484558

SN - 0004-6361

VL - 506

SP - 377

EP - 384

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 1

ER -

The Rossiter-McLaughlin effect of CoRoT-3b and HD189733b

Abstract

Keywords

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