The Smooth Way World.


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The Smooth Way World Seeds part 12 Objective Examine our home universe and its stellar group Presentation Our cosmic system ~75,000 ly breadth ~100 billion stars One of the biggest star frameworks in the universe by means of lactea "smooth way" How could it have been able to it structure and what is its structure?
Transcripts
Slide 1

The Milky Way Galaxy Seeds section 12

Slide 2

Objective Investigate our home universe and its stellar group

Slide 3

Introduction Our world ~75,000 ly measurement ~100 billion stars One of the biggest star frameworks in the universe by means of lactea “milky way” How could it have been able to it structure and what is its structure?

Slide 4

The Discovery of our Galaxy Until this century stargazers expected stars are scattered consistently through space

Slide 5

Variable Stars Variable stars were not comprehended until the twentieth century Instability strip RR Lyrae variables Cepheids Period-glow connection

Slide 6

The Galaxy\'s Size Open groups appropriated along Milky Way Globular star bunches fixated on Sagittarius - the focal point of our universe

Slide 7

An Analysis of the Galaxy Disk part Sun 8.5kpc from focus winding arms Spherical segment corona atomic lump

Slide 8

The Galaxy\'s Mass Differential pivot Rotation bend Dark matter Dark radiance ~7 ï‚\' noticeable sweep ~10-100 ï‚\' obvious mass

Slide 9

The Origin of the Milky Way Spherical segment gives fossil confirmation

Slide 10

The Age of the Milky Way Dating inclined to vulnerabilities Best gauges are: Disk ~ 7 Gyr age Halo ~ 11 Gyr age

Slide 11

Stellar Populations Population I Young metal-rich plate populace stars Population II Old metal poor radiance populace stars

Slide 12

The Element-Building Cycle Lighter metals generally created in developed stars Heavier metals rarer, delivered in SNe Very metal poor stars are old galactic fossils

Slide 13

The History of the Milky Way Galaxy Traditional model single cloud structures circle & then broken down to a plate Revised model incorporate mergers?

Slide 14

Spiral Arms and Star Formation Spiral arms contain hot blue stars, dust, gas, youthful bunches Why are they there notwithstanding differential turn?

Slide 15

Tracing the Spiral Arms Young items are winding tracers Arms are connected with star arrangement

Slide 16

Radio Maps of Spiral Arms 21cm radiation from cool hydrogen and Doppler impact empower arms to be mapped Arms unpredictable however thick

Slide 17

The Density Wave Theory Arms are influxes of pressure Trigger star development How does wave begin? What causes hairy (wooly) arms?

Slide 18

Star Formation in Spiral Arms Self-managing star development influences arms Grows bunches and goads of new stars

Slide 19

The Nucleus Most strange piece of system 30 sizes visual elimination Radio/IR uncover swarmed quick moving stars

Slide 20

Observations Sagittarius A* is intense radio source just 4AU breadth checking galaxy’s center Stars just 1000AU separated, gas/dust ring, hole & stars circling conservative 3 million sun powered mass article

Slide 21

The Massive Black Hole Hypothesis Compact - 13 times bigger than Sun Accretion by means of plate can give radio vitality Swirl of matter 3pc crosswise over around it Eats couple of tenths sunlight based mass/year

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