The Interstellar Medium Molecular clouds Stellar halo Bulge (= bar)
... (dark matter) (dark matter) ...
... (dark matter) (dark matter) ...
The Milky Way Galaxy
... We know that other galaxies have spiral structure, but it is harder to see the Milky Way’s We find spiral arms by tracing: ...
... We know that other galaxies have spiral structure, but it is harder to see the Milky Way’s We find spiral arms by tracing: ...
NGC 5746 :: NGC 5746 Handout - Chandra X
... Spiral galaxies are thought to form from enormous clouds of intergalactic gas that collapse to form spinning disks of stars and gas. The Chandra data and computer simulations show that the likely origin of NGC 5746's hot halo is the gradual inflow of intergalactic matter left over from the formation ...
... Spiral galaxies are thought to form from enormous clouds of intergalactic gas that collapse to form spinning disks of stars and gas. The Chandra data and computer simulations show that the likely origin of NGC 5746's hot halo is the gradual inflow of intergalactic matter left over from the formation ...
Physics 127 Descriptive Astronomy Homework #19 Key
... 13-9. How do astronomers conclude that vast quantities of dark matter surround our Galaxy? How is this dark matter distributed in space? There are several pieces of evidence that lead us to conclude that the galaxy is embedded in a gigantic halo of dark matter. Perhaps the most compelling is the rat ...
... 13-9. How do astronomers conclude that vast quantities of dark matter surround our Galaxy? How is this dark matter distributed in space? There are several pieces of evidence that lead us to conclude that the galaxy is embedded in a gigantic halo of dark matter. Perhaps the most compelling is the rat ...
AST101 Lecture 20 The Ecology of the Galaxy
... • About 1010 years old • 105 - 106 stars • Radius ~ 10 light years • Most massive star: ~ 1 solar mass • ~150 globular clusters known in Milky Way ...
... • About 1010 years old • 105 - 106 stars • Radius ~ 10 light years • Most massive star: ~ 1 solar mass • ~150 globular clusters known in Milky Way ...
Lecture 29 - Empyrean Quest Publishers
... Globular clusters orbit galactic center, sun 2/3rds way out. He used proper motions of Cepheids-->Distance (11 stars). Shapley-Curtis debate 1920--Nebulae are within our island universe (Shapley). Nebulae may be other galaxies (Curtis). Edwin Hubble 1923--distance to Andromeda galaxy found from Ceph ...
... Globular clusters orbit galactic center, sun 2/3rds way out. He used proper motions of Cepheids-->Distance (11 stars). Shapley-Curtis debate 1920--Nebulae are within our island universe (Shapley). Nebulae may be other galaxies (Curtis). Edwin Hubble 1923--distance to Andromeda galaxy found from Ceph ...
Discussion Activity #13
... A. Theoretical models of galaxy formation suggest that a galaxy cannot form unless it has at least 10 times as much matter as we see in the Milky Way disk, suggesting that the halo is full of dark matter. B. The orbital speeds of stars far from the galactic center are surprisingly high, suggesting t ...
... A. Theoretical models of galaxy formation suggest that a galaxy cannot form unless it has at least 10 times as much matter as we see in the Milky Way disk, suggesting that the halo is full of dark matter. B. The orbital speeds of stars far from the galactic center are surprisingly high, suggesting t ...