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Peter Wheatley (PS009) p.j.wheatley@warwick.ac.uk PX437 EXOPLANETS Peter Wheatley (PS009) p.j.wheatley@warwick.ac.uk.

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Presentation on theme: "Peter Wheatley (PS009) p.j.wheatley@warwick.ac.uk PX437 EXOPLANETS Peter Wheatley (PS009) p.j.wheatley@warwick.ac.uk."— Presentation transcript:

1 Peter Wheatley (PS009) p.j.wheatley@warwick.ac.uk
PX437 EXOPLANETS Peter Wheatley (PS009)

2 Outline Before Exoplanets Detecting exoplanets Planet Formation
Direct imaging Reflex Motion of Star Transiting exoplanets Planet Formation Extra-Terrestial Life

3 IAU Asteroid belt Kuiper belt Terrestrial planets Gas giants
Ice giants IAU

4 Planets, dwarf planets, small solar-system bodies
Ceres: dwarf planet Typical asteroid: small solar-system body HST

5 Evolutionary tracks Burrows et al. 1997, ApJ 491, 856 Stars Brown
dwarfs Planets Jupiter Saturn Evolutionary tracks

6 Composition of the giant planets
Stevenson 1982 AREPS 10, 257

7 Tidal model Stephen Oxley

8 Discovery of debris around Vega
Observed IR spectrum with 10,000 K black body subtracted IRAS observation: Temperature ~ 85 K Extent ~ 20 arcsec ~ 85 AU Aumann et al. 1984, ApJL 278, 23

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10 Imaging of the debris disc around beta Pictoris
Smith & Terrile 1984, Science 266, 1421 HST

11 Protoplanetary discs in Orion with HST
McCaughrean & O’Dell 1996 AJ 111, 1977 Protoplanetary discs in Orion with HST

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13 Debris discs around white dwarf stars
Gaensicke et al. 2006, Science 314, 1908 MgII FeII CaII

14 Debris discs around white dwarf stars
Rin  0.7R Rout  1.2R e  0.02

15 Debris discs around white dwarf stars
Rin  0.7R Rout  1.2R e  0.02

16 Debris discs around white dwarf stars
Rin  0.7R Rout  1.2R e  0.02


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