1. PX269 Galaxies Dr Peter Wheatley
7.5 CATs; ~18 lectures; follows from PX268 Stars
Dr Peter Wheatley
Office: PS009

2. Books

3. Books II

4. Books III

5. Part 1: Introduction 1.1 Historical overview

6. The Milky Way Wei-Hao Wang University of Hawaii
Lecture 1, historical context, how do we know what galaxies are?
The Milky Way
Wei-Hao Wang
University of Hawaii

7. Galileo Galilei
1609

8. Mountains and craters on the moon

9. Sunspots

10. Galileo’s sketch
                          
Cassini probe
Saturn’s rings

11. Jupiter’s moons
Europa   Io      Ganymede   Callisto
Kurt Friedrich

12. The Starry Messenger, Galileo Galilei 1610
SIDEREAL MESSENGER unfolding great and very wonderful sights and displaying to the gaze of everyone, but especially philosophers and astronomers, the things that were observed by GALILEO GALILEI, Florentine patrician and public mathematician of the University of Padua, with the help of a spyglass lately devised by him, about the face of the Moon, countless fixed stars, the Milky Way, nebulous stars, but especially about four planets flying around the star of Jupiter at unequal intervals and periods with wonderful swiftness; which, unknown by anyone until this day, the first author detected recently and decided to name MEDICEAN STARS
The Starry Messenger, Galileo Galilei 1610

13. Milky Way
Wei-Hao Wang
University of Hawaii

14. Milky Way and a “spiral nebula”
Wei-Hao Wang
University of Hawaii
Milky Way and a “spiral nebula”

15. 1750s
Thomas Wright
Immanuel Kant

16. Angular momentum and disc geometries
Believe Sun and planets formed from a Solar Nebula, rotation + collapse => disk.
Rich Townsend, UCL

17. Wei-Hao Wang
University of Hawaii

18. Charles Messier

19. Andromeda Galaxy = M31 = NGC 224

20. Cepheid variables as standard candles
Magnitude
Log Period [d]
Henrietta Swan Leavitt

21. 100-inch Mt Wilson telescope
Edwin Hubble

22. Hubble Space Telescope

23. Hubble Deep Field 1,000,000 sec exposure
Seeing 100 billion times fainter than human eye…
…and half way back to the beginning of time.

25. Part 1: Introduction 1.2 Galaxy classification

26. Hubble Space Telescope
Lecture 2, classification of galaxies

27. M87
an elliptical galaxy
CFHT

28. NGC 2768
an elliptical galaxy

29. M 51 the Whirlpool Galaxy

30. NGC 1300 a barred spiral galaxy

31. Dust extinction in the Sombrero Galaxy = M 104

32. NGC 1427A
a dwarf irregular galaxy

33. M 51 the Whirlpool Galaxy
Lecture 3, the Milky Way