Presentation is loading. Please wait.

Presentation is loading. Please wait.

Disks - Variability, Gaps & Protoplanets A Practical Guide.

Similar presentations


Presentation on theme: "Disks - Variability, Gaps & Protoplanets A Practical Guide."— Presentation transcript:

1 Disks - Variability, Gaps & Protoplanets A Practical Guide

2 Young Pre-Main Sequence Disks Regenerated Debris Disks - replenished by collisions Older PMS Disks - grain growth & settling 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

5 Stars in the planet-formation phase? 2-20 Myr old

6

7 Idealized Disks visibleinfrared high T low T Wiens Law!

8 TW Hya - Calvet et al. 2002, ApJ, 568, 1008 outer diskwallinner disk BASS!

9 Puffed-Up Inner Disks

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

11

12 Dullemond, Dominik, & Natta 2001, ApJ, 560, 957

13

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

15

16 Text Identifying gaps in flaring Herbig Ae/Be disks using spatially resolved mid-infrared imaging Are all group I disks transitional? Maaskant et al arXiv v1 evolutionary scenario?

17 Transitional Disks

18 Cleared Disks & Puffy Rims

19 COC March 19, 2008

20 Hughes et al. 2007, ApJ, 664, 536 Observations Hole ModelNo Hole Model TW Hya

21

22 LkCa 15 H-band coronagraphic AO image

23

24

25 Debris Disks

26 Regenerated Debris Disks

27

28

29 There IS NO The Model Inner Disk Variability

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

31 Fringes in the JHK bands

32

33

34

35

36

37 DG Tau - Spitzer IRS (courtesy of Jeff Bary)

38

39

40 right after outburst HD = MWC 275

41

42 Exoplanets Hot Jupiters? Who ordered those?!

43

44 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

45 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...

46

47

48 Inside the gap of SAO Spiral arm modeling - probably 2 planets NASA Press release UC student on the paper: Chelsea Werren

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

50

51 V1247 Ori - Kraus et al PlanetQuest blurb Sky & Telescope blog UC students on the paper: Jeremy Swearingen, Chelsea Werren

52 HD Casassus et al observation model artwork

53 Summary Sublimation of dust (planet-forming material) gravitational sweeping of formed planets protoplanet candidates possibly detected Study of Inner Disk Variability: understand the physics of planet-forming disks understand the distribution of processed material in the disks some variability may be planet-generated Disks Clear Due To:

54 Fin


Download ppt "Disks - Variability, Gaps & Protoplanets A Practical Guide."

Similar presentations


Ads by Google