Characterization of the HD 17156 Planetary System

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Characterization of the HD 17156 Planetary System

Show simple item record Barbieri, M. Alonso, R. Desidera, S. Sozzetti, A. Martinez Fiorenzano, A.F. Almenara, J.M. Cecconi, M. Claudi, R.U. Endl, M. Granata, V. Gratton, R. Laughlin, G. Loeillet, B. Charbonneau, David 2010-08-09T20:57:57Z 2009
dc.identifier.citation Barbieri, M, R. Alonso, S. Desidera, A. Sozzetti, A.F. Martinez Fiorenzano, J. M. Almenara, et al. 2009. Characterization of the HD 17156 planetary system. Astronomy and Astrophysics 503(2): 601-612. en_US
dc.identifier.issn 0004-6361 en_US
dc.description.abstract Aims. We present data to improve the known parameters of the HD 17156 system (peculiar due to the eccentricity and long orbital period of its transiting planet) and constrain the presence of stellar companions. Methods. Photometric data were acquired for 4 transits, and high precision radial velocity measurements were simultaneously acquired with the SARG spectrograph at TNG for one transit. The template spectra of HD 17156 was used to derive effective temperature, gravity, and metallicity. A fit of the photometric and spectroscopic data was performed to measure the stellar and planetary radii, and the spin-orbit alignment. Planet orbital elements and ephemeris were derived from the fit. Near infrared adaptive optic images were acquired with the AdOpt module of TNG. Results. We found that the star has a radius of RS = 1.44$\pm$0.03 $R_\odot$ and the planet RP = 1.02$\pm$0.08 RJ. The transit ephemeris is Tc = 2 454 756.73134 $\pm$ 0.00020 + N $\cdot$ 21.21663 $\pm$ 0.00045 BJD. Analysis of the Rossiter-Mclaughlin effect shows that the system is spin orbit aligned with an angle $\beta$ = 4.8°$\pm$5.3°. The analysis of high resolution images did not reveal any stellar companion with a projected separation between of 150 and 1 000 AU from HD 17156. en_US
dc.description.sponsorship Astronomy en_US
dc.language.iso en_US en_US
dc.publisher EDP Sciences en_US
dc.relation.isversionof doi:10.1051/0004-6361/200811466 en_US
dc.relation.hasversion en_US
dash.license OAP
dc.subject stars en_US
dc.subject HD 17156 en_US
dc.subject planetary systems en_US
dc.subject eclipsing en_US
dc.subject spectroscopic en_US
dc.subject photometric en_US
dc.title Characterization of the HD 17156 Planetary System en_US
dc.type Journal Article en_US
dc.description.version Accepted Manuscript en_US
dc.relation.journal Astronomy and Astrophysics -Berlin then Les Ulis- en_US Charbonneau, David 2010-08-09T20:57:57Z

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