PX269 Galaxies Dr Peter Wheatley 7.5 CATs; ~18 lectures; follows from PX268 Stars Dr Peter Wheatley p.j.wheatley@warwick.ac.uk Office: PS009
Books
Books II
Books III
Part 1: Introduction 1.1 Historical overview
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
Galileo Galilei 1609
Mountains and craters on the moon
Sunspots
Galileo’s sketch Cassini probe Saturn’s rings
Jupiter’s moons Europa Io Ganymede Callisto Kurt Friedrich
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
Milky Way Wei-Hao Wang University of Hawaii
Milky Way and a “spiral nebula” Wei-Hao Wang University of Hawaii Milky Way and a “spiral nebula”
1750s Thomas Wright Immanuel Kant
Angular momentum and disc geometries Believe Sun and planets formed from a Solar Nebula, rotation + collapse => disk. Rich Townsend, UCL
Wei-Hao Wang University of Hawaii
Charles Messier
Andromeda Galaxy = M31 = NGC 224
Cepheid variables as standard candles Magnitude Log Period [d] Henrietta Swan Leavitt
100-inch Mt Wilson telescope Edwin Hubble
Hubble Space Telescope
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.
Part 1: Introduction 1.2 Galaxy classification
Hubble Space Telescope Lecture 2, classification of galaxies
M87 an elliptical galaxy CFHT
NGC 2768 an elliptical galaxy
M 51 the Whirlpool Galaxy
NGC 1300 a barred spiral galaxy
Dust extinction in the Sombrero Galaxy = M 104
NGC 1427A a dwarf irregular galaxy
M 51 the Whirlpool Galaxy Lecture 3, the Milky Way