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Tercera parte

Tercera parte. Young Objects. Greene 01. Scattering: Disks/Envelopes. SINGLE SCATTERING , Wood et al. (1996). no-null polarization perpendicular to disk (edge-on). null polarization (pole-on). SINGLE SCATTERING , Wood et al. (1996). no-null polarization parallel to disk (edge-on).

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Tercera parte

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  1. Tercera parte

  2. Young Objects

  3. Greene 01

  4. Scattering: Disks/Envelopes SINGLE SCATTERING, Wood et al. (1996)

  5. no-null polarization perpendicular to disk (edge-on) null polarization (pole-on) SINGLE SCATTERING, Wood et al. (1996)

  6. no-null polarization parallel to disk (edge-on) MULTIPLE SCATTERING, Bastien & Menard (1988)

  7. no-null polarization parallel to disk MULTIPLE SCATTERING, Bastien & Menard (1988)

  8. V1352 Aql (T Tau) • Observed: 2005/jun/24, aperture: 1.25” • P(H): [0.76  0.04] %, PA: 124.9° • Binary system • PA axis outflow: 106° (Hartigan et al. 1983) • HH: 32A, 32B, 32C and 32D • PA P(H) ~ parallel to axis jet. • As the jet is perpendicular to disk: • PA P(H) ~ perpendicular to disk. • Consistent with NIR pol. beeing produzed by SINGLE scattering in a optically THIN disk. H Jet 10” Hartigan et al. 1983

  9. DG Tau (T Tau) • Observed: 2005/oct/12, aperture: 1.25” • P(H): [1.29  0.09] %, PA: 129.0° • PA jet: 222° (Lavalley et al. 1997) • PA P(H) is perpendicular to jet. • As the jet is perpendicular to disk: • PA P(H) is // disk. • Consistent with NIR pol. beeing produzed by MULTIPLE scattering in a optically THICK disk. H Jet [OI]6300 - continuum Lavalley et al. (1997)

  10. Envelopes ofEvolvedObjects

  11. PPN Hen 3-1475 Ueta et al. 00 HST, .55m

  12. PPN Hen 3-1475 LNA jun/05 PH (observed): (3.0 0.1)% @ 49.2° (H)obs. // (optical)obs. Model Disk/Torus: Opt. : optic. thick NIR : optic. thin (λ > K) Rodrigues et al. 03

  13. Opportunity Targets(SNs, GRB)

  14. Asymmetries in SNs SN = unresolved source with electron-scattering atmosphere Leonard 06

  15. SN2004bv (Ia) Pereyra & Magalhães 05

  16. SN2004bv (Ia) R ~ 14.5 SN: (0.11  0.02)% @ 119° Foreground: (0.12  0.02)% @ 163° Pereyra & Magalhães 05

  17. SN2005af (II) Pereyra & Magalhães 06

  18. Carnegie Supernova Project site

  19. Pereyra & Magalhães 06

  20. Pereyra & Magalhães 06

  21. Pereyra & Magalhães 06

  22. GRB030329 LNA 03/mar/31 (R) 16’x16’ Afterglow optical polarization: R ~ 16 (1.97 ± 0.48) % @ 83° Magalhães et al. 2003 Asymmetric collapse A Field stars: A:(0.58 ± 0.11)% @ 25° B:(0.06 ± 0.12)% @ 21° OT B

  23. SpectropolarimetryIAGPOL + EIFU

  24. EIFU Lepine 00

  25. EIFU + IAGPOL: Data Extraordinary beam (E) Ordinary beam (O) EIFU 2D reconstructed image Sky E O Extracted fibers (aperture: 2pix = 2”)

  26. RY Tau (T Tau) Gemini image

  27. RY Tau (T Tau) Axis Jet: <PA> ~ 115º Bastien 2007: (Halpha – I) image

  28. RY Tau (T Tau) (1.8  0.2)% @ (11  3)° (binned)

  29. RY Tau (T Tau) U Observed pol. (continuum): (1.8  0.2)% @ (11  3)° ISP: 2.8% @ 26° (Petrov et al. 99) Intrinsic pol.: (1.6  0.2)% @ 134° Axis Jet: <PA> ~ 115º ISP Intrinsic pol. Q Observed pol. Probably, optically thin disk

  30. (Q,U) Diagram: line polarization diagnostic • A. Depolarization line: • extended H source;  ~ pol • linear excursion in (Q,U) • B. Position Angle flip • compact H source;  > pol • loop in (Q,U) • C. Null effect: • circular geometry • dot in (Q,U) A B C

  31. RY Tau (T Tau) U • Loop detected Q • int= 0.5 tan-1(U/Q) = (168 ± 11)°

  32. Summary • A competitive polarimetric facility is available at brazilian LNA site • Projects of medium/long term as monitoring or surveys are (and will be) the main focus of attention • Collaborations with projects in optical and NIR polarimetry (and also spectropolarimetry) are welcomed.

  33. THE END

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