The Bulletin of The Korean Astronomical Society (천문학회보)

The Korean Astronomical Society (한국천문학회)
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Measuring gas metallicity of local AGNs using UV spectra

  • Shin, Jae-Jin (Astronomy program, Department of Physics and Astronomy, Seoul National University) ;
  • Woo, Jong-Hak (Astronomy program, Department of Physics and Astronomy, Seoul National University)
  • Published : 2012.04.03
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Abstract

As a tracer of star formation history, metallicity provides crucial information for understanding galaxy evolution. In the case AGN, gas metallicity is often derived from the flux ratio of UV emission lines, i.e., NV1240 and CIV1549. To investigate the dependence of metallicity on AGN luminosity, black hole mass, and accretion rate, we measure NV1240 and CIV1549 line fluxes and derive gas metallicity of a sample of 73 local Seyfert 1 galaxies and QSOs, using archival UV spectra obtained with the HST and IUE. In this work, we will present the metallicity of local AGN and its relation with AGN properties.

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