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28 Cards in this Set
- Front
- Back
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White Dwarf
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limit of mass is 1.4
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Neutron Star
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2-3 solar neutron
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Pulsar
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rapidly rotating proton star
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Black Hole
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3 solar masses or more
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Nova
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combination of White dwarf and Red Giant
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Supernova:
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Creates ALL heavy elements in the universe!
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1054 AD
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Supernova remnant is the Crab nebula containing a pulsar!
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Main sequence fitting
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Distance of Star clusters
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Main sequence cutoff
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Age of Star Clusters
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POPULATION I Stars
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Young, recycled stars, (found in the disk)
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POPULATION II
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Original stars, (found in Nucleus)
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What is the Singularity in a Black Hole?
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In the middle of the Black Hole
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What is the Event Horizon?
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The outer circumference of a black hole.
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How do you detect a Black Hole?
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If it has 3 solar masses or higher
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What are some different parts of our Galaxy, the Milky way?
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nucleus, Halo, Disk (spiral Arms)
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What is the Span and Thickness of The Milky Way?
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Span: 100,000 LY
Thickness: 10,00 |
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What are Globular Clusters?
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Very old Star Clusters with Black holes in the center
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In what amount of time does the sun revolve around the milky way?
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every 2 hundred million years
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ISM =
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InterStellar Medium (Gas and Dust), (everything Besides stars)
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Nebulae
Emission: |
H II region (the birth of Stars)
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Nebulae:
Reflection: |
Blue. Young Stars
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Nebulae:
Dark: |
Dense
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Nebulae:
Planetary: |
Death of A Star (white dwarf in Center)
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Facts on Spiral Density waves
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- Produces Illusion of spiral arms
- Trigger star formation - Possible cause of "Ice Ages" - Generated from external nearby galaxies. |
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Hubble "turning Fork"
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spirals, barred spirals, and Elliticals
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Which types of Galaxies have POP I and POP II?
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Irregular, Spiral, and Barred spiral Galaxies.
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What type of Galaxies have NO stellar cycling, only old, Original POP II Stars?
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The Elliptical Galaxies
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Until 1920...
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Galaxies were thought to be Nebulae in the Milky Way!
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