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〔C II〕Continuum Intensity Ratio in the Far-Infrared Toward the Central Kiloparsec of the Nearby Spiral Galaxy M31
摘    要:1 IntroductionThe〔CII〕1 5 8μm ( 2 P3 /2 →2 P1/2 )emissionlineoftendominatesthegascoolingintheneu tralphaseofthegalacticISM (interstellarmedium) .ThislineiswellcorrelatedonagalacticscalewithFIR (far-infrared)continuum ,whichtracesthecoolingofdustgrains.Nearlyconstantin…

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