• Spectral Variability of Quasar SDSS J030639.57+000343.1

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      https://www.ias.ac.in/article/fulltext/joaa/035/03/0477-0479

    • Keywords

       

      Galaxies: active; galaxies: individual: SDSS J030639.57+000343.1; techniques: spectroscopic.

    • Abstract

       

      In a sample of 60 quasars selected from the Sloan Digital Sky Survey (SDSS) with at least six-epoch spectroscopy, we investigated the variability of emission lines and continuum luminosity. In this paper, we present the results of SDSS J030639.57+000343.1. We found a strong anticorrelation between the continuum luminosity at 5100 Å and the spectral index, implying a bluer-when-brighter trend. The luminosity of the broad 𝐻𝛼 line is in proportion to the continuum luminosity at 5100 Å. Correspondingly, we did not find a strong correlation between the equivalent width of broad 𝐻𝛼 and the continuum luminosity, i.e. no Baldwin effect of broad 𝐻𝛼 in this source.

    • Author Affiliations

       

      Hengxiao Guo1 2 Minfeng Gu1

      1. Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, China.
      2. University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing 100049, China.
    • Dates

       
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