The following are parameters of stars that astronomers obtained from their measurements. Which one of these conclusions is obviously erroneous, on the basis of the positions of these alleged stars on the Hertzsprung-Russell diagram in Figure 17-15a? ( $L_{\odot}$ and $R_{\odot}$ are the luminosity and radius of the Sun, respectively.)

Question

Quizplus · Accepted Answer

A white dwarf star would not have the luminosity of the Sun (1 $L_{\odot}$) with only 1/10th of the Sun's radius (1/10 $R_{\odot}$) and a temperature of 20,000 K. This combination of parameters does not fit the characteristics of white dwarfs on the Hertzsprung-Russell diagram, as white dwarfs are typically much less luminous given their small size and high temperature.

The Following Are Parameters of Stars That Astronomers Obtained from Their