HAT-P-16b: A 4 MJ PLANET TRANSITING A BRIGHT STAR ON AN ECCENTRIC ORBIT,
By Lars A. Buchhave, Gáspár Á. Bakos, Joel D. Hartman, G. Torres, G. Kovacs, D. Latham, R. W. Noyes, G. Esquerdo, Mark E. Everett, Andrew W. Howard and 12 more. 2010
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We report the discovery of HAT-P-16b, a transiting extrasolar planet orbiting the V = 10.8 mag F8 dwarf GSC 2792-01700, with a period P = 2.775960 ± 0.000003 days, transit epoch Tc = 2455027.59293 ± 0.00031 (BJD10), and transit duration 0.1276 ± 0.0013 days. The host star has a mass of 1.22 ± 0.04 M☉, radius of 1.24 ± 0.05 R☉, effective temperature 6158 ± 80 K, and metallicity [Fe/H] = +0.17 ± 0.08. The planetary companion has a mass of 4.193 ± 0.094 MJ and radius of 1.289 ± 0.066 RJ, yielding a mean density of 2.42 ± 0.35 g cm−3. Comparing these observed characteristics with recent theoretical models, we find that HAT-P-16b is consistent with a 1 Gyr H/He-dominated gas giant planet. HAT-P-16b resides in a sparsely populated region of the mass–radius diagram and has a non-zero eccentricity of e = 0.036 with a significance of 10σ.
Subfields: Astronomy and Astrophysics
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- STELLAR AND PLANETARY PROPERTIES OF K2 CAMPAIGN 1 CANDIDATES AND VALIDATION OF 17 PLANETS, INCLUDING A PLANET RECEIVING EARTH-LIKE INSOLATION (2015, methodology): “The spectra were extracted as described in Buchhave et al. (2010).”
- ALMOST ALL OF KEPLER'S MULTIPLE-PLANET CANDIDATES ARE PLANETS (2012, methodology): “…an independent check of the values of the SME parameters, we also derived values by matching the spectrum to synthetic spectra (Torres et al. 2002; Buchhave et al. 2010), and in addition we employ a new fitting scheme (Stellar Parameter Classification, SPC) that is currently under development and…”
- DISCOVERY AND VALIDATION OF Kepler-452b: A 1.6 R⨁ SUPER EARTH EXOPLANET IN THE HABITABLE ZONE OF A G2 STAR (2015, methodology): “The spectra were taken on UT 2014, June 09 and UT 2014, June 14 and were extracted as described by Buchhave et al. (2010).”
- Kepler-22b: A 2.4 EARTH-RADIUS PLANET IN THE HABITABLE ZONE OF A SUN-LIKE STAR (2011, methodology): “As an independent check of the values of the SME parameters, we also derived values by matching the spectrum to synthetic spectra (Torres et al. 2002; Buchhave et al. 2010), and in addition we employ a new fitting scheme that allows us to extract precise stellar parameters from the spectra.”
- FRIENDS OF HOT JUPITERS. I. A RADIAL VELOCITY SEARCH FOR MASSIVE, LONG-PERIOD COMPANIONS TO CLOSE-IN GAS GIANT PLANETS (2013, unknown): “…(5) Winn et al. (2011); (6) Winn et al. (2009b); (7) Simpson et al. (2011); (8) Moutou et al. (2011); (9) West et al. (2009b); (10) Bakos et al. (2010); (11) Winn et al. (2010c); (12) Hartman et al. (2009); (13) Winn et al. (2010a); (14) Torres et al. (2010); (15) Winn et al. (2011); (16)…”
- PLANETARY CANDIDATES FROM THE FIRST YEAR OF THE K2 MISSION (2015, methodology): “9 http://www.astro.caltech.edu/~jmc/2mass/v3/ transformations/ We observed 68 stars with TRES at least once, collecting a total of 101 spectra, and extracted the spectra using the procedure described in Buchhave et al. (2010).”
- OBLIQUITIES OF HOT JUPITER HOST STARS: EVIDENCE FOR TIDAL INTERACTIONS AND PRIMORDIAL MISALIGNMENTS (2012, background): “(3.5± 1.5 km s−1) priors from Buchhave et al. (2010) we found that HAT-P-16 b orbits its host star on a prograde orbit (λ = 2+55−46 ◦).”