1. New stellar streams found in SDSS Dr7 张昊彤 Zhang Haotong zht@lamost.org 2010. 7

2. Matched filter Rockosi et. al,2002 Grillmair, 2009

3. Matched filter

5. 1.5

6. Matched filter 2.0

7. Matched filter 2.5

8. Matched filter 3.0

9. Matched filter 3.5

10. Matched filter 4.0

11. Steams found by Matched filter Pal5 22d, Grillmair 2006 NGC5546, Grillmair 2006 GD1, Grillmair 2006 Orphan, Grillmair 2006 Anticenter or Monoceros, Grillmail 2006

12. Streams found by mached filter Grillmair 2009

13. Streams found by matched filter Ibata 2007

14. Something old

15. Pal5 Rockosi 2002 Grillmair 2006 Odenkirchen, 2009

16. pal5 Dehnen, W et.al. 2004 Odenkirchen, M. et al.2009 Quillen, A. et al. 2010

17. Pal5 2.0 mag Deeper than M13

18. Pal5

20. Δr=1.9+-0.17 Δr=2.2+-0.21 Δr=2.05+-0.31

21. Orphan Grillmair 2006 Belokurov, 2007

22. Orphan Newberg, 2010 Fellhauer, M, et.al. 2007 Jin, Shoko, Lynden-bell,D., 2007 Sales,L., et al. 2008 Newberg,H., et al, 2010

23. Orphan 3.5 mag Deeper than M13

24. Orphan (l,b) ~ (160,45)

25. Orphan

27. Newberg et.al 2010

28. Orphan

32. ΔM~0.6

33. Orphan

40. Something maybe new

41. GD1 related Willett, 2009

42. GD1 Related 0.75 mag deeper

43. GD1 related GD1 here ~8.8+-0.8 Kpc, willet 2009

44. GD1 related D~9.4 +-0.6kpc 9.4+-0.8kpc D~7.7 +-0.8kpc ?

45. GD1 Related Grillmair 2006

46. Something new

49. Ob2~46°Ob1~25° Ob3~24°

51. Ob1 ~16.8kpc Ob2~13.1KpcOb3~11.7kpc

53. Spectra in Ob3

54. Proper motion ob2

55. Proper motion ob2

56. Proper motion ob3

57. conclusions New extension found for Orphan & Pal5 Found a stream may go across gd1 Found 3 other faint streams more than 10Kpc Some of them maybe wrong No Extra information from Spectra and proper motion found for those faint Streams. More powerful telescope to explore their kinematic information.

58. Thank you