Oral Presentation

Physical properties of radio galaxies selected with Subaru Hyper Suprime-Cam and VLA FIRST surveys

Author(s): Yoshiki Toba (Kyoto Univ./ASIAA), Takuji Yamashita (Ehime Univ.), Tohru Nagao (Ehime Univ.), Wei-Hao Wang (ASIAA), Yoshihiro Ueda (Kyoto Univ.), Kohei Ichikawa (Tohoku Univ.), Toshihiro Kawaguchi (Onomichi city Univ.), and WERGS team

Presenter: Yoshiki Toba (Kyoto University, ASIAA)

We present physical properties of optically-faint (i_AB > 21.3) radio galaxies newly discovered by Subaru Hyper-Supreme Cam (HSC) and VLA Faint Images of the Radio Sky at Twenty-Centimeters (FIRST) survey. For 3579 objects detected by HSC and FIRST in Yamashita et al., we compiled multi- wavelength data of optical, near-infrared (IR), mid-IR, far-IR, and radio (150 MHz). We derived their color excess (E(B − V )), stellar mass, star formation rate (SFR), IR luminosity, the ratio of far-IR and radio luminosity, and radio spectral index that are derived from the Spectra Energy Distribution (SED) fitting. We fount that optically-faint radio galaxies show a large dust extinction, low stellar mass, high SFR and AGN luminosity compared to optically-bright ones (Toba et al. 2018, to be submitted).