PX269 Galaxies Dr Peter Wheatley [email protected] Office: PS009.
39
-
date post
21-Dec-2015 -
Category
Documents
-
view
217 -
download
2
Transcript of PX269 Galaxies Dr Peter Wheatley [email protected] Office: PS009.
PX269 Galaxies
Books£25£45
PX269 Galaxies
Books II £30 £35
PX269 Galaxies
Part 1: Introduction
1.1 Historical overview
PX269 GalaxiesWei-Hao WangUniversity of Hawaii
The Milky Way
PX269 Galaxies
Galileo Galilei
1609
PX269 Galaxies
Mountains and craters on the moon
Sunspots
Cassini probe
Galileo’s sketch
Saturn’s rings
PX269 Galaxies
Europa Io Ganymede Callisto
Kurt Friedrich
Jupiter’s moons
SIDEREAL MESSENGERunfolding great and very wonderful sightsand displaying to the gaze of everyone,but especially philosophers and astronomers,the things that were observed byGALILEO GALILEI,Florentine patricianand 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 aboutfour planetsflying around the star of Jupiter at unequal intervalsand periods with wonderful swiftness;which, unknown by anyone until this day,the first author detected recentlyand decided to nameMEDICEAN STARS
The Starry Messenger, Galileo Galilei 1610
PX269 Galaxies
Milky Way
Wei-Hao WangUniversity of Hawaii
PX269 Galaxies
Wei-Hao WangUniversity of Hawaii
Milky Way and a “spiral nebula”
PX269 Galaxies
1750s
Thomas Wright
Immanuel Kant
Rich Townsend, UCL
Angular momentum and disc geometries
PX269 Galaxies
Wei-Hao WangUniversity of Hawaii
PX269 Galaxies
Charles Messier
Andromeda Galaxy = M31 = NGC 224
PX269 Galaxies
Andromeda Galaxy = M31 = NGC 224Lord Rosse 72” telescope
1845
PX269 Galaxies
Cepheid variables as standard candles
Henrietta Swan Leavitt
Log Period [d]
Magnitude
PX269 Galaxies
Edwin Hubble
100-inch Mt Wilson telescope
PX269 Galaxies
Hubble Space Telescope
PX269 Galaxies
M 51 the Whirlpool Galaxy
PX269 GalaxiesWei-Hao WangUniversity of Hawaii
The Milky Way
PX269 Galaxies
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.
PX269 Galaxies
Part 1: Introduction
1.2 Galaxy classification
PX269 Galaxies
Edwin Hubble
100-inch Mt Wilson telescope
Hubble Space Telescope
PX269 Galaxies
M87
an elliptical galaxy
CFHT
PX269 Galaxies
NGC 2768
an elliptical galaxy
M 51 the Whirlpool Galaxy
NGC 1300 a barred spiral galaxy
Dust extinction in the Sombrero Galaxy = M 104
M 51 the Whirlpool Galaxy
PX269 Galaxies
Hertzsprung-Russell(HR) Diagram
