Poster Presentation

The dust properties of red QSOs

Tsai, An-Li (NCU)

The QSOs are one type of AGNs. The spectral energy distribution of luminous QSOs showed blue optical-to-ultraviolet spectral energy distribution. However, the recent observations discovered a population of red QSOs. The nature of these red QSOs are still not clear. The redness is obscured either by dusty torus or by dust associated with nuclear star formation. The better wavelength to study the obscuration process of QSOs is from IR to radio, which can avoid the dust extinction at optical. We have selected a group of red QSOs from the SDSS Quasar Catalog, the VLA FIRST Radio Survey Catalog to select red QSOs, and the WISE All Sky Survey Data. We aim to investigate their dust properties.