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Exploring Our Galaxy: The Milky Way Components and Structure

Dive into the components and structure of our own galaxy, the Milky Way, from its central Sun to globular clusters, extinction, molecular clouds, and more. Learn about its kinematics, rotation curve, and gravitational microlensing method.

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Exploring Our Galaxy: The Milky Way Components and Structure

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  1. PX269 Galaxies Part 2: Our Galaxy, the Milky Way 2.1 Components and Structure PX269 Galaxies

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

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

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

  5. Kapteyn, 1922 Star counts with distance scale

  6. Shapley & Shapley, 1919 Distribution of globular clusters

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

  8. NGC 891, showing extinction Adam Block

  9. Vallee 2002

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

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

  12. NGC 891, showing dust extinction Adam Block

  13. Interstellar reddening

  14. Dust scattering

  15. Pleiades open cluster Scattered light Philip Perkins

  16. NGC 891 Optical Infra-red 2MASS CFHT

  17. Wei-Hao Wang University of Hawaii

  18. COBE/DIRBE near infrared image of whole sky

  19. M 51 the Whirlpool Galaxy HII regions

  20. Optical spectrum of an HII region Diaz et al 1987 Flux Wavelength (Angstroms)

  21. HII regions: the Orion Nebula Mike Fleenor

  22. COBE/DIRBE near infrared image of whole sky

  23. HI map of whole sky

  24. 21cm HI map of Milky Way

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

  26. NGC 6744 in HI Ryder et al 1999

  27. Molecular clouds

  28. Part 2: Our Galaxy, the Milky Way 2.2 Kinematics

  29. Galactic co-ordinates Carroll & Ostlie, 1996

  30. Carroll & Ostlie, 1996

  31. Carroll & Ostlie, 1996

  32. HI map of whole sky

  33. 21 cm line profile along one line of sight Carroll & Ostlie, 1996

  34. Carroll & Ostlie, 1996

  35. 21cm HI map of Milky Way

  36. Rotation curve of Milky Way

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

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

  39. Gravitational microlensing method

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

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