640 likes | 770 Views
PX269 Galaxies. 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. Wei-Hao Wang University of Hawaii. Galileo Galilei. 1609. Galileo’s sketch. Cassini probe.
E N D
PX269 Galaxies 7.5 CATs; ~18 lectures; follows from PX268 Stars Dr Peter Wheatley p.j.wheatley@warwick.ac.uk Office: PS009
Wei-Hao Wang University of Hawaii
Galileo Galilei 1609
Galileo’s sketch Cassini probe
Europa Io Ganymede Callisto Kurt Friedrich
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
Milky Way Wei-Hao Wang University of Hawaii
Wei-Hao Wang University of Hawaii
1750s Thomas Wright Immanuel Kant
Wei-Hao Wang University of Hawaii
Magnitude Log Period [d] Henrietta Swan Leavitt
100-inch Mt Wilson telescope Edwin Hubble
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.
M87 an elliptical galaxy CFHT
NGC 2768 An elliptical galaxy
NGC 1427A a dwarf irregular galaxy
Wei-Hao Wang University of Hawaii
Wei-Hao Wang University of Hawaii Extinction in plane of Milky Way
NGC 6744, Milky Way-like galaxy Capella Observatory
M 51 the Whirlpool Galaxy HII regions
Pleiades open cluster Philip Perkins
NGC 891 Optical Infra-red 2MASS CFHT