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Asteroseismic Diagnostics of Stellar Age and Mass

Description: This quiz will test your understanding of asteroseismic diagnostics of stellar age and mass.
Number of Questions: 14
Created by:
Tags: asteroseismology stellar age stellar mass
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What is the fundamental mode of oscillation in a star?

  1. p-mode

  2. f-mode

  3. g-mode

  4. r-mode

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Correct Option: A
Explanation:

The fundamental mode of oscillation in a star is the p-mode, which is a pressure mode that is primarily driven by the pressure gradient in the star.

What is the relationship between the frequency of a p-mode oscillation and the star's mass?

  1. The frequency increases with increasing mass.

  2. The frequency decreases with increasing mass.

  3. The frequency is independent of the star's mass.

  4. The frequency is proportional to the square root of the star's mass.

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Correct Option: A
Explanation:

The frequency of a p-mode oscillation is proportional to the square root of the star's mass.

What is the relationship between the frequency of a p-mode oscillation and the star's age?

  1. The frequency increases with increasing age.

  2. The frequency decreases with increasing age.

  3. The frequency is independent of the star's age.

  4. The frequency is proportional to the square root of the star's age.

Show answer
Correct Option: B
Explanation:

The frequency of a p-mode oscillation decreases with increasing age as the star's core becomes denser and the star's radius increases.

What is the main source of excitation for p-mode oscillations in stars?

  1. Convection

  2. Rotation

  3. Magnetic fields

  4. Nuclear fusion

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Correct Option: A
Explanation:

The main source of excitation for p-mode oscillations in stars is convection, which is the transport of heat by the movement of fluid.

What is the typical frequency range of p-mode oscillations in solar-like stars?

  1. 1-10 mHz

  2. 10-100 mHz

  3. 100-1000 mHz

  4. 1-10 Hz

Show answer
Correct Option: A
Explanation:

The typical frequency range of p-mode oscillations in solar-like stars is 1-10 mHz.

What is the typical frequency range of p-mode oscillations in red giant stars?

  1. 1-10 mHz

  2. 10-100 mHz

  3. 100-1000 mHz

  4. 1-10 Hz

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Correct Option: C
Explanation:

The typical frequency range of p-mode oscillations in red giant stars is 100-1000 mHz.

What is the typical frequency range of p-mode oscillations in white dwarf stars?

  1. 1-10 mHz

  2. 10-100 mHz

  3. 100-1000 mHz

  4. 1-10 Hz

Show answer
Correct Option: D
Explanation:

The typical frequency range of p-mode oscillations in white dwarf stars is 1-10 Hz.

What is the typical frequency range of p-mode oscillations in neutron stars?

  1. 1-10 mHz

  2. 10-100 mHz

  3. 100-1000 mHz

  4. 1-10 kHz

Show answer
Correct Option: D
Explanation:

The typical frequency range of p-mode oscillations in neutron stars is 1-10 kHz.

What is the typical frequency range of p-mode oscillations in black hole stars?

  1. 1-10 mHz

  2. 10-100 mHz

  3. 100-1000 mHz

  4. 1-10 kHz

Show answer
Correct Option:
Explanation:

Black hole stars do not have a solid surface, so they cannot support p-mode oscillations.

What is the main advantage of using asteroseismic diagnostics to determine stellar age and mass?

  1. Asteroseismic diagnostics are more accurate than other methods.

  2. Asteroseismic diagnostics are less expensive than other methods.

  3. Asteroseismic diagnostics can be used to determine the age and mass of stars that are too far away to be studied by other methods.

  4. Asteroseismic diagnostics can be used to determine the age and mass of stars that are too young to be studied by other methods.

Show answer
Correct Option: C
Explanation:

Asteroseismic diagnostics can be used to determine the age and mass of stars that are too far away to be studied by other methods, such as spectroscopy or photometry.

What is the main disadvantage of using asteroseismic diagnostics to determine stellar age and mass?

  1. Asteroseismic diagnostics are more expensive than other methods.

  2. Asteroseismic diagnostics are less accurate than other methods.

  3. Asteroseismic diagnostics can only be used to determine the age and mass of stars that are close to the Sun.

  4. Asteroseismic diagnostics can only be used to determine the age and mass of stars that are old.

Show answer
Correct Option: C
Explanation:

Asteroseismic diagnostics can only be used to determine the age and mass of stars that are close to the Sun, as the oscillations are too faint to be detected from stars that are farther away.

Which of the following stars is not suitable for asteroseismic diagnostics?

  1. Solar-like stars

  2. Red giant stars

  3. White dwarf stars

  4. Neutron stars

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Correct Option: D
Explanation:

Neutron stars are not suitable for asteroseismic diagnostics because they do not have a solid surface, so they cannot support p-mode oscillations.

Which of the following stars is most suitable for asteroseismic diagnostics?

  1. Solar-like stars

  2. Red giant stars

  3. White dwarf stars

  4. Neutron stars

Show answer
Correct Option: A
Explanation:

Solar-like stars are most suitable for asteroseismic diagnostics because they have a large number of p-mode oscillations that are easily detectable.

What is the future of asteroseismic diagnostics?

  1. Asteroseismic diagnostics will be used to determine the age and mass of more stars.

  2. Asteroseismic diagnostics will be used to study the internal structure of stars.

  3. Asteroseismic diagnostics will be used to detect exoplanets.

  4. All of the above.

Show answer
Correct Option: D
Explanation:

Asteroseismic diagnostics will be used to determine the age and mass of more stars, study the internal structure of stars, and detect exoplanets.

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