Planetary transits
description
Transcript of Planetary transits
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PX437 EXOPLANETSSherwood observatory
Planetary transits
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PX437 EXOPLANETS
First transiting exoplanet: HD209458b
Henry et al. 2000, ApJ 529, L41Charbonneau et al. 2000, ApJ 529, L45
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PX437 EXOPLANETS
Wide Angle Search for Planets (WASP)
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PX437 EXOPLANETS
Mass-radius relation
Jupiter
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PX437 EXOPLANETSPont et al. 2005
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PX437 EXOPLANETSCharbonneau et al 2007, ApJ 658, 1327
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PX437 EXOPLANETSPollacco et al. 2008
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PX437 EXOPLANETS
Stevenson 1982 AREPS 10, 257
Composition of solar system planets
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PX437 EXOPLANETS
Gillon et al. 2007
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PX437 EXOPLANETS
Transits from space: CoRoT-7b Leger et al. 2009
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PX437 EXOPLANETS
Kepler
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PX437 EXOPLANETSKeith Horne
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PX437 EXOPLANETS
HD209458b with HST
Brown et al. 2001, ApJ 529, L41
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PX437 EXOPLANETS
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PX437 EXOPLANETS
Transmission spectroscopyBrown 2001
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PX437 EXOPLANETS
Detection of sodium in the atmosphere of HD209458b
Charbonneau et al. 2002
ApJ 568, 377
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PX437 EXOPLANETS
Detection of sodium in the atmosphere of HD209458b
Charbonneau et al. 2002
ApJ 568, 377
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PX437 EXOPLANETS
Transmission spectroscopy with HST Pont et al. 2008 MNRAS 385 109
HD189733b
Sing et al. 2008 ApJ 686 658
HD209458b
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PX437 EXOPLANETS
Evaporation of HD209458b
Vidal-Madjar et al 2003, Nature 422, 143
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PX437 EXOPLANETS
The Sun in X-rays
Lx < 10-3 LBol
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PX437 EXOPLANETS
Rossiter-McLaughlin effect
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PX437 EXOPLANETS
Radial Velocity of 51 Peg b
Mayor & Queloz 1995, Nature 378, 23
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PX437 EXOPLANETS
Winn et al 2005 ApJ 631, 1215
Rossiter-McLaughlin effect in HD 209458
Measures spin of star
Shows 4deg misalignedbut same direction as planet orbit
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PX437 EXOPLANETS
Anderson et al. 2009
Retrograde orbit of WASP-17b
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PX437 EXOPLANETS
Secondary eclipses
Spitzer Space Telescope
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PX437 EXOPLANETS
HD 209458 at 24 microns
Deming et al 2005
Nature 434, 740
Eclipse depth 0.26%
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PX437 EXOPLANETS
HD209458b at a range of wavelengths
Knutson et al. 2008 ApJ 673, 526
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PX437 EXOPLANETS
Knutson et al. 2008, ApJ 673, 526Temperature inversion in HD209458b
CO
H20
H20
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PX437 EXOPLANETS
Burrows, Sudarsky & Hubeny 2006 Temperature inversion due to TiO opacity?
4.5 microns 8 microns
with Tio/VO
without TiO/VO
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PX437 EXOPLANETS
HD189733b around half an orbit
Knutson et al. 2007, Nature 447, 183