Which of the following statements is wrong? A. A carbon white dwarf is supported against gravity by the degeneracy pressure of carbon nuclei. B. Suppose you look by eye at a star near the edge of a dusty interstellar cloud. The star will look dimmer and redder than it would if it were outside the cloud. C. Planetary nebula formation is more common than supernovae. D. As a cloud contracts under gravity, thermal energy is converted to radiative energy and released as photons. This prevents the pressure from increasing.
Which of the following statements is wrong?
A. A carbon white dwarf is supported against gravity by the degeneracy pressure of carbon nuclei.
B. Suppose you look by eye at a star near the edge of a dusty interstellar cloud. The star will look dimmer and redder than it would if it were outside the cloud.
C. Planetary nebula formation is more common than supernovae.
D. As a cloud contracts under gravity, thermal energy is converted to radiative energy and released as photons. This prevents the pressure from increasing.
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May I confirm my understanding:
| Star | Late-stage |
| Low-mass | Planetary nebula |
| High-mass | Supernovae |
Since low-mass stars are more abundant than high-mass stars, more of the low-mass stars die so planetary nebula formations are more common?
Or on second thought, low-mass stars live longer lives than high-mass stars so planetary nebula formations are rarer than supernovas?
I would also like to know more about events and observations in cloud contraction (option D).
Many thanks!
by Bartleby Expert
