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Ground-Based Exoplanet Searches: Techniques and Discoveries

Explore various ground-based exoplanet search methods including radial velocity, astrometry, transits, direct detection, and more. Learn about pulsars, white dwarfs, pulsar-planet interactions, microlensing, and the latest discoveries in exoplanetary research.

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Ground-Based Exoplanet Searches: Techniques and Discoveries

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  1. Marc Kuchner Princeton University Ground-Based Exoplanet Searches Radial Velocity Astrometry Transits Lensing Pulsation Timing Disks Direct Detection

  2. Timing: Pulsars + White Dwarfs t = z / c Time Stamp on Each Pulse gives you More Information than Doppler Shift

  3. Mukadam et al. 2003 Pulsar planet interactions 4.3, 3.9 M Konacki & Wolszczan 2003

  4. Microlensing Mao & Paczynski 1991 Einstein Ring background star Paczynski 1996

  5. V days Probing Lensing Anomalies NETwork (PLANET)

  6. caustic Planet near RE around lensing star. Lensing Stars/yr OGLE-III: 500 MOA: 60

  7. 43 events from PLANET. Gaudi et al. 2003 1/4 mostly M stars halfway to galactic center RE~ 2.5 AU 3/4 If 3/4 of lenses had planets above this line, they would have been detected. Projected Separation units of RE

  8. Direct Detection: Optical Boo: A < 0.39 at i = 36R=1.2 RJ (Leigh et al. 2003) And: similar (Cameron et al. 2002) star + planet star

  9. Direct Detection: Nulling (Mid+Near IR)

  10. Conventional Beam Combiner Achromatic Nuller more planet photons, fewer star photons

  11. Keck Interferometer

  12. Inside Quadratic Null: star and planet are spectrally degenerate (-4) planet and flux are degenerate

  13. MIDI first fringes VLTI: Ground-based European Nulling Interferometer Experiment (GENIE)

  14. Direct Detection: Differential Phase (near IR)

  15. Burrows 2000 center of light

  16. Serabyn 2002 2 m 5 m

  17. Large Binocular Telescope (LBT)

  18. Antarctica: Cold, Dry, and No High-Altitude Turbulence Nulling, AO, Differential Phase, Astrometry Antarctic Planet Interferometer (API)

  19. Astrometry Stellar Planet Survey (STEPS) 30 M stars Astrometric Search for Planets Encircling Nearby Stars (ASPENS) 100 stars 2 mas: 10 MJ in 4 years 1 MJ in 15 years perturbation magnified 30x !! 15 MJ e=0.2 a=0.6 AU d=50 pc =50 mas/yr Perryman 2000

  20. Direct Detection: Near Infrared

  21. Simulated 15 minute H-band image 5 MJ planet/solar-type star 4096 actuators Extreme Adaptive Optics Planet Imager (XAOPI) Bruce Macintosh, James Graham et al. 1.6 arcseconds

  22. Kuchner & Traub 2002

  23. Direct Detection: Radio cyclotron maser [Kraus, RadioAstronomy, 1966]

  24. Hot Jupiters ? Radio Bode's Law • • Zarka et al. 2001

  25. Farrell, Desch & Zarka 1999 VLA Green Bank Telescope Nancay Decametric Array Arecibo LOFAR : Farrell et al. 2003

  26. ALMA Hot Young Jupiter at 160 pc~10 mJy at 850 m

  27. Disks

  28. Eridani 15, 20 and 40 m Moran, Kuchner & Holman 2003

  29. Radial Velocity and Transits Direct Infrared Astrometry and Lensing Timing

  30. log “Q”: 0 -2 Transits -4 -6 -Radial Velocity, Astrometry & Microlensing spectral signal from hot Jupiter residual stellar signal Nulling Coronagraphy Differential Phase Doppler Tomography

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