Question: The space immediately surrounding stars, also called the circumstellar space, is significantly warmer because stars are very intense black -body emitters with temperatures of several

The space immediately surrounding stars, also called the circumstellar space, is significantly warmer because stars are very intense black -body emitters with temperatures of several thousand kelvin. Discuss how such factors as cloud temperature, particle density, and particle velocity may affect the rotational spectrum of CO in an interstellar cloud. What new features in the spectrum of CO can be observed in gas ejected from and still near a star with temperatures of about 1000 K, relative to gas in a cloud with temperature of about 10 K? Explain how these features may be used to distinguish between circumstellar and interstellar material on the basis of the rotational spectrum of CO.

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Temperature effects at extremely low temperatures 10K only the lowest rotational states are populated No emission spectrum is expected for the cloud and star light microwave absorptions by the cloud a... View full answer

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