TY - JOUR
T1 - The hot-Jupiter Kepler-17b
T2 - Discovery, obliquity from stroboscopic starspots, and atmospheric characterization
AU - Désert, J.-M.
AU - Charbonneau, D.
AU - Ballard, S.
AU - Carter, J.A.
AU - Quinn, S.N.
AU - Fressin, F.
AU - Latham, D.W.
AU - Torres, G.
AU - Lissauer, J.J.
AU - Sasselov, D.D.
AU - Demory, B.-O.
AU - Seager, S.
AU - Winn, J.N.
AU - Fortney, J.J.
AU - Fabrycky, D.C.
AU - Cochran, W.D.
AU - Endl, M.
AU - MacQueen, P.J.
AU - Isaacson, H.T.
AU - Knutson, H.A.
AU - Marcy, G.W.
AU - Buchhave, L.A.
AU - Bryson, S.T.
AU - Rowe, J.F.
AU - Borucki, W.J.
AU - Christiansen, J.L.
AU - Haas, M.R.
AU - Koch, D.
AU - Batalha, N.M.
AU - Brown, T.M.
AU - Caldwell, D.A.
AU - Jenkins, J.M.
AU - Mullally, F.
AU - Tenenbaum, P.
AU - Deming, D.
AU - Ford, E.B.
AU - Gilliland, R.L.
AU - Gillon, M.
AU - Kinemuchi, K.
AU - Still, M.
AU - Lucas, P.W.
AU - Uddin, K.
N1 - ‘In these times, during the rise in the popularity of institutional repositories, the Society does not forbid authors from depositing their work in such repositories. However, the AAS regards the deposit of scholarly work in such repositories to be a decision of the individual scholar, as long as the individual's actions respect the diligence of the journals and their reviewers.’ Original article can be found at : http://iopscience.iop.org/ Copyright American Astronomical Society
PY - 2011/11/1
Y1 - 2011/11/1
N2 - This paper reports the discovery and characterization of the transiting hot giant exoplanet Kepler-17b. The planet has an orbital period of 1.486 days, and radial velocity measurements from the Hobby-Eberly Telescope show a Doppler signal of 419.5 m s. From a transit-based estimate of the host star's mean density, combined with an estimate of the stellar effective temperature T = 5630 ± 100 from high-resolution spectra, we infer a stellar host mass of 1.06 ± 0.07 M and a stellar radius of 1.02 ± 0.03R . We estimate the planet mass and radius to be M = 2.45 0.11 M and R = 1.31 ± 0.02R . The host star is active, with dark spots that are frequently occulted by the planet. The continuous monitoring of the star reveals a stellar rotation period of 11.89 days, eight times the planet's orbital period; this period ratio produces stroboscopic effects on the occulted starspots. The temporal pattern of these spot-crossing events shows that the planet's orbit is prograde and the star's obliquity is smaller than 15°. We detected planetary occultations of Kepler-17b with both the Kepler and Spitzer Space Telescopes. We use these observations to constrain the eccentricity, e, and find that it is consistent with a circular orbit (e < 0.011). The brightness temperatures of the planet's infrared bandpasses are = 1880 ± 100 K and = 1770 ± 150 K. We measure the optical geometric albedo A in the Kepler bandpass and find A = 0.10 ± 0.02. The observations are best described by atmospheric models for which most of the incident energy is re-radiated away from the day side.
AB - This paper reports the discovery and characterization of the transiting hot giant exoplanet Kepler-17b. The planet has an orbital period of 1.486 days, and radial velocity measurements from the Hobby-Eberly Telescope show a Doppler signal of 419.5 m s. From a transit-based estimate of the host star's mean density, combined with an estimate of the stellar effective temperature T = 5630 ± 100 from high-resolution spectra, we infer a stellar host mass of 1.06 ± 0.07 M and a stellar radius of 1.02 ± 0.03R . We estimate the planet mass and radius to be M = 2.45 0.11 M and R = 1.31 ± 0.02R . The host star is active, with dark spots that are frequently occulted by the planet. The continuous monitoring of the star reveals a stellar rotation period of 11.89 days, eight times the planet's orbital period; this period ratio produces stroboscopic effects on the occulted starspots. The temporal pattern of these spot-crossing events shows that the planet's orbit is prograde and the star's obliquity is smaller than 15°. We detected planetary occultations of Kepler-17b with both the Kepler and Spitzer Space Telescopes. We use these observations to constrain the eccentricity, e, and find that it is consistent with a circular orbit (e < 0.011). The brightness temperatures of the planet's infrared bandpasses are = 1880 ± 100 K and = 1770 ± 150 K. We measure the optical geometric albedo A in the Kepler bandpass and find A = 0.10 ± 0.02. The observations are best described by atmospheric models for which most of the incident energy is re-radiated away from the day side.
KW - planetary systems
KW - stars: individual (Kepler-17b, KIC 10619192, 2MASS 19533486+4748540)
KW - eclipses
KW - techniques: photometry
UR - http://www.scopus.com/inward/record.url?scp=80655127961&partnerID=8YFLogxK
U2 - 10.1088/0067-0049/197/1/14
DO - 10.1088/0067-0049/197/1/14
M3 - Article
AN - SCOPUS:80655127961
SN - 0067-0049
VL - 197
JO - Astrophysical Journal, Supplement Series
JF - Astrophysical Journal, Supplement Series
IS - 1
M1 - 14
ER -