1. Part 2: The Milky Way 2.1 Components and Structure
PX269 Galaxies
Part 2: The Milky Way
2.1 Components and Structure

2. The Milky Way
Wei-Hao Wang
University of Hawaii

3. First map of Milky Way: Sun near centre
Herschel, 1785

4. Globular cluster 47 Tuc, 2MASS
Distribution of globular clusters suggests Sun not close to centre

5. Extinction in plane of Milky Way
Wei-Hao Wang
University of Hawaii
Extinction in plane of Milky Way

6. NGC 891, showing extinction Adam Block

10. NGC 6744, Milky Way-like galaxy Capella Observatory

11. NGC 6744 in HI Ryder et al 1999

12. M 51 the Whirlpool Galaxy
HII regions

13. HII regions: the Orion Nebula
Mike Fleenor

14. Lecture 4, The ISM
NGC 6744, HI, Ryder et al 1999

15. 21cm HI map of Milky Way

16. Molecular clouds

17. Dust scattering

18. Interstellar reddening
Lecture 5 = dust extinction
Interstellar reddening

19. Pleiades open cluster
Scattered light
Philip Perkins

20. NGC Optical Infra-red
CFHT
2MASS

21. Wei-Hao Wang
University of Hawaii

22. COBE/DIRBE near infrared image of whole sky

23. Part 2: The Milky Way 2.2 Kinematics

24. Galactic co-ordinates
Lecture 6 (or 7?)
Carroll & Ostlie, 1996

25. Carroll & Ostlie, 1996

26. Carroll & Ostlie, 1996

27. Peculiar velocities of nearby stars
Carroll & Ostlie, 1996

28. Carroll & Ostlie, 1996

29. HI map of whole sky

30. 21 cm line profile along one line of sight
Carroll & Ostlie, 1996

31. Carroll & Ostlie, 1996

32. Rotation curve of Milky Way

33. A = rotation curve for centrally-concentrated mass distribution
B = rotation curve for extended mass distribution

34. First detection of a gravitational microlensing event
Alcock et al 1993

35. Discovery of a 5 Earth mass planet
Beaulieu et al 2006