Short Questions about Stellar Evolution
- Why does chemical composition change most rapidly in the center of a star?
- Why do nuclei of elements other than hydrogen require higher temperatures to fuse?
- Suppose 2 stars form at the same time. They have the same masses and compositions. What can be said about the evolution of the two stars from that point forward?
- Why does the process of creating neutrons from protons and electrons reduce the ability of a Giant star to support the weight of the star? In other words, why does gravity have a bigger advantage once the protons and electrons fuse into neutrons?
- Main sequence stars of 5 MSun are though to evolve into 1 MSun white dwarfs. What happened to the other 4 MSun?
- Why would no pulses be observed from a rotating neutron star if its magnetic axis and spin axis were aligned?
- What does angular momentum have to do with the rapid rotation of neutron stars?
- Which of the following pairs of quantities can be plotted against each other to produce an H-R diagram?
a) Temperature and Distance
b) Temperature and Spectral Class
c) Luminosity and Spectral Class
d) Luminosity and Temperature
e) Luminosity and distance
f) distance and spectral class
- Why are most stars in the H-R diagram on the main sequence?
- How does the brightness of a giant star compare with the brightness of a main sequence star of the same spectral class?
- What evidence do we have that stars form in the "clumps" of Giant Molecular Clouds?