ELODIE metallicity-biased search for transiting Hot Jupiters. II. A very hot Jupiter transiting the bright K star HD 189733

By F. Bouchy, S. Udry, M. Mayor, C. Moutou, F. Pont, Nicolas Iribarne, Ronaldo da Silva, S. Ilovaisky, D. Queloz, Nuno C. Santos and 2 more. 2005

380 citations recorded by the source corpus.

Among the 160 known exoplanets, mainly detected in large radial-velocity surveys, only 8 have a characterization of their actual mass and radius thanks to the two complementary methods of detection: radial velocities and photometric transit. We started in March 2004 an exoplanet-search programme biased toward high-metallicity stars which are more frequently host extra-solar planets. This survey aims to detect close-in giant planets, which are most likely to transit their host star. For this programme, high-precision radial velocities are measured with the ELODIE fiber-fed spectrograph on the 1.93-m telescope, and high-precision photometry is obtained with the CCD Camera on the 1.20-m telescope, both at the Haute-Provence Observatory. We report here the discovery of a new transiting hot Jupiter orbiting the star HD189733. The planetary nature of this object is confirmed by the observation of both the spectroscopic and photometric transits. The exoplanet HD189733b, with an orbital period of 2.219 days, has one of the shortest orbital periods detected by radial velocities, and presents the largest photometric depth in the light curve (~ 3%) observed to date. We estimate for the planet a mass of 1.15 +- 0.04 Mjup and a radius of 1.26 +- 0.03 RJup. Considering that HD189733 has the same visual magnitude as the well known exoplanet host star HD209458, further ground-based and space-based follow-up observations are very promising and will permit a characterization of the atmosphere and exosphere of this giant exoplanet.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/c47f1aaf6153aa3158e3aea2e27c90daba6cd620

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In Astronomy and Astrophysics

1. Jon Fortney
2. N. Madhusudhan
3. D. Charbonneau
4. J. Southworth
5. A. Showman
6. Sara Seager
7. J. Winn
8. H. Knutson

In Instrumentation

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

Citations in the corpus

• THE CLIMATE OF HD 189733b FROM FOURTEEN TRANSITS AND ECLIPSES MEASURED BY SPITZER (2010, background): “The planet system HD 189733 (Bouchy et al. 2005) is one of the best studied transiting planet systems due to two factors: its close proximity to our Solar System, making its star one of the brightest transit host stars, and the large size of the planet relative to the star, making the transits…”
• Efficient identification of exoplanetary transit candidates from SuperWASP light curves (2007, background): “Other teams pursuing similar studies have already achieved important advances in this area (Bouchy et al. 2005; Pont et al. 2005a,b, 2006).”
• ASTROMETRIC EXOPLANET DETECTION WITH GAIA (2014, background): “E P] 5 N etry for HD 209458 b (Robichon & Arenou 2000) and HD 189733 b (Bouchy et al. 2005), has been considered both for Hipparcos (Castellano et al. 2000; Laughlin 2000; Jenkins et al. 2002; Koen & Lombard 2002) and Gaia (Robichon 2002; Høg 2002).”
• The Influence of Atmospheric Dynamics on the Infrared Spectra and Light Curves of Hot Jupiters (2006, background): “The recently discovered transiting planet HD 189733b (Bouchy et al. 2005) would likely be an even more attractive target, as the planet-star flux ratios are likely twice as large (Fortney et al. 2006; Deming et al. 2006a), and the orbital period is∼40% shorter.”
• Infrared Transmission Spectra for Extrasolar Giant Planets (2006, background): “The planet HD 189733b, recently discovered by Bouchy et al. (2005) with massM ∼p and , orbits an early main-sequence K star at1.”
• The Transit Light Curve Project. I. Four Consecutive Transits of the Exoplanet XO-1b (2006, background): “HD 189733b’s measured radius RP = 1.154 ± 0.032 RJ (Bakos et al. 2006) is also larger than its theoretical value (RP = 1.03 RJ with a core, RP = 1.11 RJ without a core), given its equilibrium temperature Teq = 1050 K and mass MP = 0.82 ± 0.03 (Bouchy et al. 2005).”
• ROTATION AND WINDS OF EXOPLANET HD 189733 b MEASURED WITH HIGH-DISPERSION TRANSMISSION SPECTROSCOPY (2015, background): “Here we search for the Doppler signature of synchronous rotation and atmospheric circulation in the high-resolution transmission spectrum of HD 189733 b (Bouchy et al. 2005).”
• DISEQUILIBRIUM CARBON, OXYGEN, AND NITROGEN CHEMISTRY IN THE ATMOSPHERES OF HD 189733b AND HD 209458b (2011, background): “The cool but chromospherically active HD 189733 has an effective temperature in the range ∼5050–5090 K (Bouchy et al. 2005; Knutson et al. 2010) and has typically been classified in the literature as a K1V-to-K2V main-sequence star (e.g., Barnes et al. 2010; Shkolnik et al. 2008), although the…”
• EVIDENCE OF POSSIBLE SPIN–ORBIT MISALIGNMENT ALONG THE LINE OF SIGHT IN TRANSITING EXOPLANET SYSTEMS (2010, background): “Note that CoRoT-2 (Alonso et al. 2008) and HD 189733 (Bouchy et al. 2005) are known to be more active than the Sun, and therefore potential fast rotators.”
• Catalog of Nearby Exoplanets (2006, background): “Bouchy et al. (2005b) find i = 85.”