Show:
Main Sequence Stars
Red Giants
Horizontal Branch
AGB
100
Path on the HR diagram determined by a star's mass.
What is evolutionary track?
100
This is how a star moves on the HR diagram when a it runs out of Hydrogen in its core.
What is leave the main sequence?
100
The sudden start of helium fusion.
What is the helium flash?
100
AGB Stands for this.
What is Asymptotic Giant Branch?
200
The lifetimes of high-mass stars are ________ than the lifetimes of low-mass stars.
What is shorter?
200
Where fusion occurs in a red giant star?
What is in a hydrogen shell around the Helium ash core?
200
Where fusion takes place after the flash.
What is Helium fusion in the core and Hydrogen fusion in a shell?
200

A star becomes an AGB when this is used up in the core

What is Helium?
300
Because high-mass stars have more of this, they also have stronger gravity, higher temp and pressure, faster fusion and higher luminosity.
What is fuel? (more hydrogen for fusion)
300
The name for the core of the red giant that becomes denser and smaller until electrons are packed as tightly as they will go.
What is electron-degenerate core?
300
Where the star goes on the HR diagram after the helium flash.
What is the horizontal branch?
300

Types of fusion in a AGB star.

What is Helium Shell and Hydrogen Shell?
400
The property of a main sequence star that increases with time.
What is luminiosity?
400
This is produced by stronger gravity, higher pressure and faster fusion in red giants.
What is greater luminosity?
400
This happens to the luminosity of a star after the helium flash.
What is drops down? (and stays constant)
400

Properties of star as goes up the AGB.

What is more luminous, cooler, and bigger?

500
A MS star with half the mass of the sun will have a lifetime that is __________ than the Sun's.
What is much longer?
500
The reason the surface temperature of a red giant decreases even though its luminosity increases.
What is the star gets bigger?
500
Physical properties of a horizontal branch star compared to a red giant.
What is smaller, hotter and less luminous?
500

Direction of AGB on HR diagram.

What is up and right?