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How do we classify stars?

Answer 1

Anna Armstrong

stars are classified for different temperature/spectrum.
o b a f g k m

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Answer 2

Lincoln Adams

Temperature, luminosity, composition, and other spectral characteristics are used to classify stars. The most widely used classification system is the Morgan–Keenan (MK) system, which divides stars into seven main types: O, B, A, F, G, K, and M. These types are further divided into subclasses (e.g., O5, B2, A3) based on particular spectral features. The MK system is commonly represented by the mnemonic "Oh Be A Fine Girl, Kiss Me." Size-wise, stars can be classified as dwarf, giant, or supergiant stars.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.