QQuestionAstronomy
QuestionAstronomy
What type of star has a low temperature and a low luminosity?
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Answer
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Step 1: Understand the problem
To solve this problem, we need to understand the relationship between a star's temperature and luminosity. Luminosity (L) is the total amount of energy a star emits per unit of time, while temperature (T) is a measure of how hot the star is. In general, hotter stars are more luminous because they emit more energy.
Step 2: Review the classification of stars based on temperature and luminosity
Stars are often classified using the Hertzsprung-Russell (H-R) diagram, which plots luminosity against temperature. There are several categories of stars based on their position in the H-R diagram: - O, B, A, F, G, K, M: Main sequence stars, ordered by temperature (from hot to cool) - Giants and supergiants: More luminous than main sequence stars, but cooler or similar temperature - White dwarfs: Hot but much less luminous than main sequence stars
Final Answer
A star with a low temperature and low luminosity is a main sequence star of type K or M.
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