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Disks - Variability, Gaps & Protoplanets

Disks - Variability, Gaps & Protoplanets. A Practical Guide. Young Pre-Main Sequence Disks. “Older” PMS Disks - grain growth & settling. Regenerated “Debris Disks” - replenished by collisions. Zodiacal Light - Our Solar System Today. How do planetary systems form & evolve?

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Disks - Variability, Gaps & Protoplanets

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  1. Disks - Variability, Gaps & Protoplanets • A Practical Guide

  2. Young Pre-Main Sequence Disks “Older” PMS Disks - grain growth & settling Regenerated “Debris Disks” - replenished by collisions Zodiacal Light - Our Solar System Today

  3. How do planetary systems form & evolve? Need to study the disk structures as a function of “age”.

  4. Stars in the “planet-formation” phase? 2-20 Myr old

  5. visible infrared Idealized Disks high T low T Wien’s Law!

  6. TW Hya - Calvet et al. 2002, ApJ, 568, 1008 BASS! inner disk wall outer disk

  7. “Puffed-Up Inner Disks”

  8. Meeus Groups I and II (Meeus et al. 2001, A&A, 365, 476

  9. Dullemond, Dominik, & Natta 2001, ApJ, 560, 957

  10. Dullemond 2002, A&A, 395, 853 Meeus Group I Meeus Group II Looks good, but wait just a minute.... Let’s look at some Meeus Group I objects more closely......

  11. Maaskant et al. 2013 - arXiv 1305.3183v1 “Identifying gaps in flaring Herbig Ae/Be disks using spatiallyresolved mid-infrared imaging Are all group I disks transitional?” Text evolutionary scenario?

  12. “Transitional Disks”

  13. Cleared Disks & Puffy Rims

  14. COC March 19, 2008

  15. TW Hya Hughes et al. 2007, ApJ, 664, 536 Observations “Hole” Model No “Hole” Model

  16. LkCa 15 H-band coronagraphic AO image

  17. “Debris Disks”

  18. Regenerated Debris Disks

  19. There IS NO “The Model” Inner Disk Variability

  20. Interferometry Isella et al. 2006, A&A, 451, 951 Monnier et al. 2006, ApJ, 647, 444

  21. Fringes in the JHK bands http://www.mpifr-bonn.mpg.de/div/ir-interferometry/

  22. DG Tau - Spitzer IRS (courtesy of Jeff Bary)

  23. HD 163296 = MWC 275 right after outburst

  24. Exoplanets “Hot Jupiters”? Who ordered those?!

  25. Okay, where did all the “Hot Jupiters” come from? Cannot form inside the snow/frost line Formed further out & migrated A nice “little” (8 MB) of one example, by Phil Armitage, U Colorado

  26. Also, planetary scattering (Nice model...) Bottom line: current locations of exoplanets may have little to do with where they formed. Late Heavy Bombardment but LHB disputed...

  27. Inside the “gap” of SAO 206462 Spiral arm modeling - probably 2 planets NASA Press release UC student on the paper: Chelsea Werren

  28. Sparse Aperture Mask (SAM) Interferometry Keck II - NIRC2 Camera, January 2012

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