Post on 16-Jan-2016
PX269 Galaxies
PX269 Galaxies
7.5 CATs; ~18 lectures; follows from PX268 Stars
Dr Peter Wheatley
p.j.wheatley@warwick.ac.uk Office: PS009
PX269 Galaxies
Books
PX269 Galaxies
Books II
PX269 Galaxies
Books III
PX269 GalaxiesWei-Hao WangUniversity of Hawaii
PX269 Galaxies
Galileo Galilei
1609
PX269 Galaxies
Cassini probe
Galileo’s sketch
PX269 Galaxies
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
PX269 Galaxies
Milky Way
Wei-Hao WangUniversity of Hawaii
PX269 Galaxies
Wei-Hao WangUniversity of Hawaii
PX269 Galaxies
1750s
Thomas Wright
Immanuel Kant
Rich Townsend, UCL
PX269 Galaxies
Wei-Hao WangUniversity of Hawaii
PX269 Galaxies
Charles Messier
Andromeda Galaxy = M31 = NGC 224
PX269 Galaxies
Henrietta Swan Leavitt
Log Period [d]
Magnitude
PX269 Galaxies
Edwin Hubble
100-inch Mt Wilson telescope
PX269 Galaxies
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.
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 GalaxiesWei-Hao WangUniversity of Hawaii
Herschel, 1785
PX269 Galaxies
Globular cluster 47 Tuc, 2MASS
PX269 GalaxiesWei-Hao WangUniversity of Hawaii
Extinction in plane of Milky Way
NGC 891, showing extinction Adam Block
PX269 Galaxies
NGC 6744, Milky Way-like galaxy Capella Observatory
PX269 Galaxies NGC 6744, HI, Ryder et al 1999
M 51 the Whirlpool Galaxy
HII regions
Mike Fleenor
PX269 Galaxies NGC 6744, HI, Ryder et al 1999
PX269 Galaxies
21cm map of Milky Way
PX269 Galaxies Molecular clouds
PX269 GalaxiesInterstellar reddening
PX269 Galaxies
Philip Perkins
Pleiades open cluster
PX269 GalaxiesCFHT 2MASS
NGC 891 Optical Infra-red
PX269 GalaxiesWei-Hao WangUniversity of Hawaii
PX269 Galaxies
COBE/DIRBE near infrared image of whole sky
PX269 Galaxies
Galactic co-ordinates
PX269 Galaxies
PX269 Galaxies
PX269 Galaxies
PX269 Galaxies
HI map of whole sky
PX269 Galaxies
21 cm line profile along one line of sight
PX269 Galaxies
PX269 Galaxies
Rotation curve of Milky Way
PX269 Galaxies
PX269 Galaxies
First detection of a gravitational microlensing event
Alcock et al 1993
PX269 Galaxies
Discovery of a 5 Earth mass planet
Beaulieu et al 2006