PX269 Galaxies
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PX269 Galaxies
PX269 Galaxies
7.5 CATs; ~18 lectures; follows from PX268 Stars
Dr Peter Wheatley
[email protected] Office: PS009
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PX269 Galaxies
Books
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PX269 Galaxies
Books II
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PX269 Galaxies
Books III
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PX269 GalaxiesWei-Hao WangUniversity of Hawaii
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PX269 Galaxies
Galileo Galilei
1609
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PX269 Galaxies
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Cassini probe
Galileo’s sketch
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PX269 Galaxies
Europa Io Ganymede Callisto
Kurt Friedrich
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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
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PX269 Galaxies
Milky Way
Wei-Hao WangUniversity of Hawaii
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PX269 Galaxies
Wei-Hao WangUniversity of Hawaii
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PX269 Galaxies
1750s
Thomas Wright
Immanuel Kant
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Rich Townsend, UCL
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PX269 Galaxies
Wei-Hao WangUniversity of Hawaii
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PX269 Galaxies
Charles Messier
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Andromeda Galaxy = M31 = NGC 224
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PX269 Galaxies
Henrietta Swan Leavitt
Log Period [d]
Magnitude
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PX269 Galaxies
Edwin Hubble
100-inch Mt Wilson telescope
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PX269 Galaxies
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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.
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M87
an elliptical galaxy
CFHT
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PX269 Galaxies
NGC 2768
An elliptical galaxy
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M 51 the Whirlpool Galaxy
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NGC 1300 a barred spiral galaxy
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Dust extinction in the Sombrero Galaxy = M 104
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M 51 the Whirlpool Galaxy
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PX269 GalaxiesWei-Hao WangUniversity of Hawaii
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Herschel, 1785
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PX269 Galaxies
Globular cluster 47 Tuc, 2MASS
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PX269 GalaxiesWei-Hao WangUniversity of Hawaii
Extinction in plane of Milky Way
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NGC 891, showing extinction Adam Block
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PX269 Galaxies
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NGC 6744, Milky Way-like galaxy Capella Observatory
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PX269 Galaxies NGC 6744, HI, Ryder et al 1999
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M 51 the Whirlpool Galaxy
HII regions
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Mike Fleenor
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PX269 Galaxies NGC 6744, HI, Ryder et al 1999
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PX269 Galaxies
21cm map of Milky Way
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PX269 Galaxies Molecular clouds
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PX269 GalaxiesInterstellar reddening
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PX269 Galaxies
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Philip Perkins
Pleiades open cluster
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PX269 GalaxiesCFHT 2MASS
NGC 891 Optical Infra-red
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PX269 GalaxiesWei-Hao WangUniversity of Hawaii
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PX269 Galaxies
COBE/DIRBE near infrared image of whole sky
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PX269 Galaxies
Galactic co-ordinates
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PX269 Galaxies
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PX269 Galaxies
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PX269 Galaxies
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PX269 Galaxies
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HI map of whole sky
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PX269 Galaxies
21 cm line profile along one line of sight
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PX269 Galaxies
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PX269 Galaxies
Rotation curve of Milky Way
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PX269 Galaxies