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Published byLisa Floyd Modified over 9 years ago
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AST 101 The Realm of the Nebulae
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Meet the Neighbors
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Large Magellanic Cloud
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Small Magellanic Cloud
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The Local Group
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Contents of the Local Group About 47 galaxies 3 large galaxies 44 smaller galaxies
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The Local Group
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Big Galaxies M31 - Andromeda
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Big Galaxies M33 Triangulum
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IC 10 M 32 Sextans A Leo I
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Morphological Classification (Hubble Types) Spirals –Barred Spirals Ellipticals –Dwarf Ellipticals Irregulars
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Spirals Sa Sb Sc Sd
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Barred Spirals SBa SBb SBc SBd
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Properties of Spirals Sa Sb Sc Sd Bulge decreases in prominence Spiral arms increase in prominence Dust/gas content increases Prominence of population I increases Star formation rate increases
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Ellipticals E0 E2 E6 S0 spheroidal galaxy
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Properties of Ellipticals E0 E7 Flattening increases S0: has a disk, but no arms Little, if any, gas and dust Mostly the old stellar population (pop II)
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Tuning Fork Diagram
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