HOU Lab 7 - HOU Lab 7: Classification of Stellar Spectra...

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HOU Lab 7: Classification of Stellar Spectra Star Spectra Star Object: Spectral Type/Temperature Type Reasons: 246 GoV/ 6000K Ca II strong, Fe and other metals strong. The Ca II (K Line) at 3933.68 matched intensity of GoV. The H line (Ca II) matched at 3968. 378 F5V/7000K The Ca II-K Line- matched at 39.33 matches the standard spectra. The H line Ca II at 3968.49 also matches athe F5 Standard Spectrum . There were some metal lins at FE lines at 4143 and 4045 111 F5V/7000k The K line, Ca II at 3933 matches standard spectra. The H line at Ca II at 39.68 also matches. There are a few Fe I lines at 4045.02 and 4383.56 Additional Questions: 2. How do the astronomers get the temperature of the stars to plot on the HR Diagram more accurately than just the color they appear? Explain how they system works? Through the stellar parrallex to obtain the luminosity and the total output of the star. Parallax was the first reliable technique astronomers developed for measuring distances to stars, and it remains the only technique that directly tells us the distances of stars,
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This note was uploaded on 04/07/2008 for the course SCIENCE T07.6020.0 taught by Professor Caseyking during the Spring '08 term at NYU.

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HOU Lab 7 - HOU Lab 7: Classification of Stellar Spectra...

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