1. Tercera parte

2. Young Objects

3. Greene 01

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

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

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

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

8. V1352 Aql (T Tau) 10 Hartigan et al. 1983 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

9. DG Tau (T Tau) [OI] 6300 - continuum H Jet Lavalley et al. (1997) 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.

10. Envelopes of Evolved Objects

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

12. Rodrigues et al. 03 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)

13. Opportunity Targets (SNs, GRB)

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

15. SN2004bv (Ia) Pereyra & Magalhães 05

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

17. SN2005af (II) Pereyra & Magalhães 06

18. Carnegie Supernova Project site

19. Pereyra & Magalhães 06

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

23. Spectropolarimetry IAGPOL + EIFU

24. EIFU Lepine 00

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

26. RY Tau (T Tau) Gemini image

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

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

29. Observed pol. ISP Intrinsic pol. Q U RY Tau (T Tau) 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: ~ 115º 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) C B A

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

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