Today in Astronomy 142: the Milky Way - Astro Pas Rochester
Today in Astronomy 142: the Milky Way - Astro Pas Rochester
Today in Astronomy 142: the Milky Way - Astro Pas Rochester
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What was miss<strong>in</strong>g from that last slide?• The <strong>Milky</strong> <strong>Way</strong> is a barred galaxy• Molecular r<strong>in</strong>g outside <strong>the</strong> bar• The <strong>Milky</strong> <strong>Way</strong> is right now destroy<strong>in</strong>g a nearby diffusegalaxy called Sag A dwarf• In <strong>the</strong> halo <strong>the</strong>re are stellar streams which are remnants oftidally disrupted dwarf galaxies• The outer part of <strong>the</strong> galaxy is probably flocculent ra<strong>the</strong>rthan grand design• The outer part of <strong>the</strong> galaxy is warped and r<strong>in</strong>ged?• The disk has two components (abundances and star counts):th<strong>in</strong> disk (few hundred pc) and athick disk (1kpc),The thick disk is older.<strong><strong>Astro</strong>nomy</strong> <strong>142</strong> 10