Almost all stars on the main sequence range from 1 to 10 solar luminosities.
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Q9: The vast majority of stars near us
Q20: Fewer than 100 stars lie within 5
Q21: Ionized helium lines are found in both
Q23: Molecular lines, such as TiO, are only
Q24: Hydrogen lines are weak in M class
Q26: Spectroscopic parallax is more accurate than trigonometric
Q27: The pressure in the photosphere affects the
Q28: The main sequence is luminosity class V.
Q29: Luminosity class V stars are larger than
Q30: Main sequence stars lie at the top
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