Reference : The Hot-Jupiter Kepler-17b: Discovery, Obliquity from Stroboscopic Starspots, and Atmosp...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/107267
The Hot-Jupiter Kepler-17b: Discovery, Obliquity from Stroboscopic Starspots, and Atmospheric Characterization
English
Désert, Jean*-Michel [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA]
Charbonneau, David [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA]
Demory, Brice*-Olivier [Massachusetts Institute of Technology, Cambridge, MA 02159, USA]
Ballard, Sarah [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA]
Carter, Joshua A [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA]
Fortney, Jonathan J [Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA]
Cochran, William D [Department of Astronomy, University of Texas, Austin, USA]
Endl, Michael [Department of Astronomy, University of Texas, Austin, USA]
Quinn, Samuel N [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA]
Isaacson, Howard T [Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA]
Fressin, François [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA]
Buchhave, Lars A [Neils Bohr Institute, University of Copenhagen, DK-2100 Denmark]
Latham, David W [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA]
Knutson, Heather A [Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA]
Bryson, Stephen T [NASA Ames Research Center, Moffett Field, CA 94035, USA]
Torres, Guillermo [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA]
Rowe, Jason F [NASA Ames Research Center, Moffett Field, CA 94035, USA]
Batalha, Natalie M [San Jose State University, San Jose, CA 95192, USA]
Borucki, William J [NASA Ames Research Center, Moffett Field, CA 94035, USA]
Brown, Timothy M [Las Cumbres Observatory Global Telescope, Goleta, CA 93117, USA]
Caldwell, Douglas A [SETI Institute/NASA Ames Research Center, Moffett Field, CA 94035, USA]
Christiansen, Jessie L [NASA Ames Research Center, Moffett Field, CA 94035, USA]
Deming, Drake [Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA]
Fabrycky, Daniel C [Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA]
Ford, Eric B [Department of Astronomy, University of Florida, Gainesville, FL 32611, USA]
Gilliland, Ronald L [Space Telescope Science Institute, Baltimore, MD 21218, USA]
Gillon, Michaël mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image]
Haas, Michaël R [NASA Ames Research Center, Moffett Field, CA 94035, USA]
Jenkins, Jon M [SETI Institute/NASA Ames Research Center, Moffett Field, CA 94035, USA]
Kinemuchi, Karen [Bay Area Environmental Research Inst./NASA Ames Research Center, Moffett Field, CA 94035, USA]
Koch, David [NASA Ames Research Center, Moffett Field, CA 94035, USA]
Lissauer, Jack J [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA]
Lucas, Philip [Centre for Astrophyiscs Research, University of Hertfordshire, College Lane, Hatfield, AL10 9AB, UK]
Mullally, Fergal [SETI Institute/NASA Ames Research Center, Moffett Field, CA 94035, USA]
MacQueen, Phillip J [Department of Astronomy, University of Texas, Austin, USA]
Marcy, Geoffrey W [Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA]
Sasselov, Dimitar D [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA]
Seager, Sara [Massachusetts Institute of Technology, Cambridge, MA 02159, USA]
Still, Martin [Bay Area Environmental Research Inst./NASA Ames Research Center, Moffett Field, CA 94035, USA]
Tenenbaum, Peter [SETI Institute/NASA Ames Research Center, Moffett Field, CA 94035, USA]
Uddin, Kamal [Orbital Sciences Corporation/NASA Ames Research Center, Moffett Field, CA 94035, USA]
Winn, Joshua N [Massachusetts Institute of Technology, Cambridge, MA 02159, USA]
1-Nov-2011
Astrophysical Journal. Supplement Series
Univ Chicago Press
197
14
International
0067-0049
Chicago
IL
[en] eclipses ; planetary systems ; stars: individual: Kepler-17b KIC 10619192 2MASS 19533486+4748540 ; techniques: photometric
[en] 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[SUP]+13.3[/SUP] [SUB]-15.6[/SUB] m s[SUP]-1[/SUP]. From a transit-based estimate of the host star's mean density, combined with an estimate of the stellar effective temperature T [SUB]eff[/SUB] = 5630 ± 100 from high-resolution spectra, we infer a stellar host mass of 1.06 ± 0.07 M [SUB]&sun;[/SUB] and a stellar radius of 1.02 ± 0.03 R [SUB]&sun;[/SUB]. We estimate the planet mass and radius to be M [SUB]P[/SUB] = 2.45 ± 0.11 M [SUB]J[/SUB] and R [SUB]P[/SUB] = 1.31 ± 0.02 R [SUB]J[/SUB]. 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 T_{3.6\, {\mu m}} = 1880 ± 100 K and T_{4.5\, {\mu m}} = 1770 ± 150 K. We measure the optical geometric albedo A[SUB]g[/SUB] in the Kepler bandpass and find A[SUB]g[/SUB] = 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.
http://hdl.handle.net/2268/107267
10.1088/0067-0049/197/1/14
http://adsabs.harvard.edu/abs/2011ApJS..197...14D
http://de.arxiv.org/abs/1107.5750

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