PX437 EXOPLANETSSherwood observatory

Planetary transits

PX437 EXOPLANETS

First transiting exoplanet: HD209458b

Henry et al. 2000, ApJ 529, L41Charbonneau et al. 2000, ApJ 529, L45

PX437 EXOPLANETS

Wide Angle Search for Planets (WASP)

PX437 EXOPLANETS

Mass-radius relation

Jupiter

PX437 EXOPLANETSPont et al. 2005

PX437 EXOPLANETSCharbonneau et al 2007, ApJ 658, 1327

PX437 EXOPLANETSPollacco et al. 2008

PX437 EXOPLANETS

Stevenson 1982 AREPS 10, 257

Composition of solar system planets

PX437 EXOPLANETS

Gillon et al. 2007

PX437 EXOPLANETS

Transits from space: CoRoT-7b Leger et al. 2009

PX437 EXOPLANETS

Kepler

PX437 EXOPLANETSKeith Horne

PX437 EXOPLANETS

HD209458b with HST

Brown et al. 2001, ApJ 529, L41

PX437 EXOPLANETS

PX437 EXOPLANETS

Transmission spectroscopyBrown 2001

PX437 EXOPLANETS

Detection of sodium in the atmosphere of HD209458b

Charbonneau et al. 2002

ApJ 568, 377

PX437 EXOPLANETS

Detection of sodium in the atmosphere of HD209458b

Charbonneau et al. 2002

ApJ 568, 377

PX437 EXOPLANETS

Transmission spectroscopy with HST Pont et al. 2008 MNRAS 385 109

HD189733b

Sing et al. 2008 ApJ 686 658

HD209458b

PX437 EXOPLANETS

Evaporation of HD209458b

Vidal-Madjar et al 2003, Nature 422, 143

PX437 EXOPLANETS

The Sun in X-rays

Lx < 10-3 LBol

PX437 EXOPLANETS

Rossiter-McLaughlin effect

PX437 EXOPLANETS

Radial Velocity of 51 Peg b

Mayor & Queloz 1995, Nature 378, 23

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

PX437 EXOPLANETS

Anderson et al. 2009

Retrograde orbit of WASP-17b

PX437 EXOPLANETS

Secondary eclipses

Spitzer Space Telescope

PX437 EXOPLANETS

HD 209458 at 24 microns

Deming et al 2005

Nature 434, 740

Eclipse depth 0.26%

PX437 EXOPLANETS

HD209458b at a range of wavelengths

Knutson et al. 2008 ApJ 673, 526

PX437 EXOPLANETS

Knutson et al. 2008, ApJ 673, 526Temperature inversion in HD209458b

CO

H20

H20

PX437 EXOPLANETS

Burrows, Sudarsky & Hubeny 2006 Temperature inversion due to TiO opacity?

4.5 microns 8 microns

with Tio/VO

without TiO/VO

PX437 EXOPLANETS

HD189733b around half an orbit

Knutson et al. 2007, Nature 447, 183