| Summary: | 碩士 === 國立中央大學 === 天文研究所 === 95 === Narrow Line Seyfert I Galaxies（NLS1s） is one of the sub-class of Seyfert Galaxies. In the past years, we know very few in radio band. About 10~15% broad line Quasars are radio-loud, and discovered NLS1s are fewer than this percentage. But we just know several hundred NLS1s before 2006, there are only 6 radio-loud NLS1s, we can’t sure the infrequent radio-loud phenomenons that are cause from statistical problem or essence. So our research takes 2011 NLS1s in SDSS survey as samples and use FIRST and 2MASS data, we hope find more radio-loud NLS1s. At the same time, we analyze the radio and infrared properties and color index and redshift. More important, we want make sure the corelation between radio-loud and broad emission line.
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