Lecture 16: Winds, Jets and Outflows

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Photoevaporation of disks(Very brief)Ionization of disk surface creates surface layer of hot gas. Ifthis temperature exceeds escape velocity, then surfacelayer evaporates.v esc≈ GM 1/ 2⎛⎛ ⎞⎞⎜⎜ ⎟⎟⎝⎝ r ⎠⎠Evaporation proceeds for radii beyond:€r ≥ GM ≡ r2 grc sHII
The Edge of The Solar System:Evaporation of Disks by UV RadiationCenter of OrionNebulaHot O <strong>and</strong> B-typestars producepowerful UVradiation field.Young disk bathed inUV light.
Page 1 and 2: Lecture 16: Winds, Jets and Outflow
Page 3 and 4: Formation & viscous spreading of di
Page 5: Formation & viscous spreading of di
Page 9 and 10: Losing Material from the Inner Disk
Page 11 and 12: Bipolar outflowsJets originatefrom
Page 13 and 14: €Disk windsSlingshot effect. Blan
Page 15 and 16: Disk + star: X-wind model of Frank
Page 17 and 18: Magnetocentrifugal WindsRomanova et
Page 19 and 20: Wind Blown Cavities
Page 21 and 22: Equations for core:Wind Blown Bubbl
Page 23 and 24: Wind Blown Bubble
Page 25 and 26: Creating Jets: Magnetic field windi
Page 27 and 28: Hydrodynamic confinement in jet:Sho
Page 29 and 30: Bipolar outflows driven by JetsSwep
Page 31: Most Likely a Combination of Both
Page 35 and 36: Outflows at the Propeller Stage:Con
Page 37 and 38: Observations of Jets and Winds
Page 39 and 40: Reipurth et al1989Forbidden Lines,
Page 41 and 42: HH 212 H 2 (Mc Caughrean & Zinnecke
Page 43 and 44: HH 46/47 Spitzer H 2 PAH 3.6, 4.5,
Page 45 and 46: HST 1997HH 46/47(Hartigan et al. 05
Page 47 and 48: HH 2 HH 1HST 1997 - 1994
Page 49 and 50: HH 1 jetHST 1997 - 1994
Page 51 and 52: HH 1HST 1997 - 1994
Page 53 and 54: HH 2HST 1997 - 1994
Page 55 and 56: HH 34HST 1997 - 1994
Page 57 and 58:
MolecularOutflows:Line WingsBally &
Page 59 and 60:
Molecular Outflows: Basic Propertie
Page 61 and 62:
MolecularOutflow: the“Hubble Law
Page 63 and 64:
HH 288:Contours: CO(2-1)Greyscale:
Page 65 and 66:
VLA 05487: example of wind (Lee et
Page 67 and 68:
HH 212: example of jet (Lee et al.
Page 69 and 70:
Detecting Jets in Molecular GasSiO
Page 71 and 72:
SiO HH 212 Codella et al. 2008
Page 73:
HH 212 Lee et al. 2007
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Lecture 16: Winds, Jets and Outflows

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