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Disks - Gaps & Edges (and Variability)

Disks - Gaps & Edges (and Variability). 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?

melyssa-newman
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Disks - Gaps & Edges (and Variability)

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  1. Disks - Gaps & Edges(and Variability) • 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

  6. Interpreting Disk Structure using Models: Chiang et al. 2001, ApJ, 547, 1007 (Chiang & Goldreich 1997 Model)

  7. “Puffed-Up Inner Disks”

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

  9. Dullemond 2002, A&A, 395, 853

  10. Density (gray) & T (lines)

  11. Cleared Disks & Puffy Rims

  12. Meeus et al. 2001, A&A, 365, 476 Meeus Group II Meeus Group I

  13. AB Aur HD 100546 HD 142527 HD 179218 HD 104237 HD 142666 HD 144432 HD 150193 HD 163296 51 Oph HD 100453 HD 135344 HD 139614 HD 169142 Ib’s lack a silicate band

  14. Beyond Meeus Groups: Transition Disks

  15. COC March 19, 2008

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

  17. Hughes et al. 2007, ApJ, 664, 536 Observations “Hole” Model No “Hole” Model

  18. Bergin et al. 2004, ApJ, 614, L133 BASS! (there are much better Spitzer data today...)

  19. TW Hya Calvet, D’Alessio, Hartmann, Wilner, Walsh & Sitko (2002) suggest a possible planet a few AU from the star Setiawan et al. (2008) find one 0.04 AU away

  20. Regenerated Debris Disks

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

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

  23. HD 163296 = MWC 275 right after outburst

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

  25. Vinkovic & Jurkic 2007, ApJ, 658, 462 Text

  26. Summary Disks Clear Due To: • Sublimation of dust (planet-forming material) • gravitational sweeping of formed planets Study of Inner Disk Variability: • understand the physics of planet-forming disks • understand the distribution of processed material in the disks

  27. Fin

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