The Rossiter-McLaughlin effect of CoRoT-3b and HD 189733b

By A. Triaud, D. Queloz, F. Bouchy, C. Moutou, A. Cameron, A. Claret, P. Barge, W. Benz, M. Deleuil, T. Guillot and 6 more. 2009

145 citations recorded by the source corpus.

We present radial-velocity sequences acquired during three transits of the exoplanet HD 189733b 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 HD 189733b 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.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/35f5231290bb54b1b9d9fb0dca52fbabef808b5d

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In Astronomy and Astrophysics

1. N. Madhusudhan
2. Jon Fortney
3. A. Showman
4. D. Deming
5. H. Knutson
6. D. Charbonneau
7. J. D'esert
8. D. Sing

In Instrumentation

1. N. Madhusudhan
2. Jon Fortney
3. A. Showman
4. H. Knutson
5. D. Deming
6. J. Southworth
7. D. Charbonneau
8. J. D'esert

Citations in the corpus

• SOAP 2.0: A TOOL TO ESTIMATE THE PHOTOMETRIC AND RADIAL VELOCITY VARIATIONS INDUCED BY STELLAR SPOTS AND PLAGES (2014, background): “…spot found, 67+12−36 degrees, are compatible with previous measurements of the spin-orbit angle close to zero degree10 (Collier Cameron et al. 2010; Triaud et al. 2009; Winn et al. 2006), and HST observation of the transiting planet HD189733b occulting stellar spots at ∼ 30 degrees in latitude…”
• Homogeneous studies of transiting extrasolar planets – IV. Thirty systems with space-based light curves (2011, methodology): “An RM study has been presented by Triaud et al. (2009), whose measurements are consistent with a circular and axially aligned orbit.”
• ON THE FORMATION OF HOT JUPITERS IN STELLAR BINARIES (2012, unknown): “A. Sozzetti, M. G. Lattanzi, & A. P. Boss, 409–410, arXiv:1101.0432 Eggleton, P. P., Kiseleva, L. G., & Hut, P. 1998, ApJ, 499, 853, arXiv:astro-ph/9801246 Eggleton, P. P., & Kiseleva-Eggleton, L. 2001, ApJ, 562, 1012, arXiv:astro-ph/0104126 Fabrycky, D., & Tremaine, S. 2007, ApJ, 669, 1298, arXiv:0”
• ROTATION AND WINDS OF EXOPLANET HD 189733 b MEASURED WITH HIGH-DISPERSION TRANSMISSION SPECTROSCOPY (2015, methodology): “The RM e↵ect is often used to measure the projected obliquities (e.g. Hébrard et al. 2008; Albrecht et al. 2012) and for the case of HD 189733 b good alignment was found (Winn et al. 2006; Triaud et al. 2009; Collier Cameron et al. 2010).”
• WATER VAPOR IN THE SPECTRUM OF THE EXTRASOLAR PLANET HD 189733b. I. THE TRANSIT (2014, result): “As in prior work (e.g., Pont et al. 2008, 2013; Sing et al. 6 From observations of the Rossiter-McLaughlin effect for HD189733b, we know that the stellar rotation axis is in the plane of the sky (Triaud et al. 2009).”
• Detection of carbon monoxide in the high-resolution day-side spectrum of the exoplanet HD 189733b (2013, methodology): “The stellar mass is consistent with that found by Triaud et al. (2009) (Ms = 0.823+0.022−0.029 M⊙ andMp = 1.138+0.022 −0.025 MJup).”
• 3.6 AND 4.5 μm PHASE CURVES AND EVIDENCE FOR NON-EQUILIBRIUM CHEMISTRY IN THE ATMOSPHERE OF EXTRASOLAR PLANET HD 189733b (2012, methodology): “…Fits We calculate our eclipse curve using the equations from Mandel & Agol (2002) assuming a circular orbit for the planet, as indicated by both radial velocity data (Bouchy et al. 2005; Triaud et al. 2009; Boisse et al. 2009) and secondary eclipse photometry (Agol et al. 2010; de Wit et al. 2012).”
• Spectrally resolved detection of sodium in the atmosphere of HD 189733b with the HARPS spectrograph (2015, methodology): “The data sets are described in Table 1 (nights 1, 3, and 4 were employed by Triaud et al. 2009 to measure the Rossiter-McLaughlin effect).”
• OBLIQUITIES OF HOT JUPITER HOST STARS: EVIDENCE FOR TIDAL INTERACTIONS AND PRIMORDIAL MISALIGNMENTS (2012, unknown): “— (1) Gillon et al. (2010); (2) Triaud et al. (2009); (3) Deleuil et al. (2008); (4) Hébrard et al. (2011b); (5) Johnson et al. (2008); (6) Winn et al. (2011a); (7) Moutou et al. (2011); (8) Winn et al. (2010c); (9) Winn et al. (2010b) (10) Johnson et al. (2011); (11) Narita et al. (2009b); (12)…”
• Searching for star–planet interactions within the magnetosphere of HD 189733 (2010, background): “Triaud et al. (2009) measured the projected spinorbit misalignment angle and found it to be 0.85◦+0.32−0.28, i.e., both orbital and stellar rotation axes are almost aligned.”
• THE CLIMATE OF HD 189733b FROM FOURTEEN TRANSITS AND ECLIPSES MEASURED BY SPITZER (2010, background): “The orbit of the planet is well aligned with the spin axis of the star (Winn et al. 2006; Triaud et al. 2009).”
• Detection of water absorption in the day side atmosphere of HD 189733 b using ground-based high-resolution spectroscopy at 3.2 μm (2013, background): “Based on literature values of the planet and host star masses (e.g. Triaud et al. 2009) and the known inclination of the transiting system, the expected planet radial velocity is Kp ∼ 152 km s−1 at Vsys = −2.361 km s−1 (Bouchy et al. 2005).”
• Homogeneous studies of transiting extrasolar planets - III. Additional planets and stellar models (2010, methodology): “A new KA value is available from Boisse et al. (2009), supported by the value given by Triaud et al. (2009).”