Barišić, IvanaIvanaBarišićVAN DER WEL, ARJENARJENVAN DER WELBezanson, RachelRachelBezansonPacifici, CamillaCamillaPacificiNoeske, KaiKaiNoeskeMuñoz-Mateos, Juan C.Juan C.Muñoz-MateosFranx, MarijnMarijnFranxSmolčić, VernesaVernesaSmolčićBell, Eric F.Eric F.BellBrammer, GabrielGabrielBrammerCalhau, JoãoJoãoCalhauChauké, PriscillaPriscillaChaukévan Dokkum, Pieter G.Pieter G.van Dokkumvan Houdt, JoshaJoshavan HoudtGALLAZZI, Anna RitaAnna RitaGALLAZZILabbé, IvoIvoLabbéMaseda, Michael V.Michael V.MasedaMuzzin, AdamAdamMuzzinSobral, DavidDavidSobralStraatman, CarolineCarolineStraatmanWu, Po-FengPo-FengWu2020-09-012020-09-0120170004-637Xhttp://hdl.handle.net/20.500.12386/27017We investigate the stellar kinematics and stellar populations of 58 radio-loud galaxies of intermediate luminosities (L <SUB>3 GHz</SUB> > 10<SUP>23</SUP> W Hz<SUP>-1</SUP>) at 0.6 < z < 1. This sample is constructed by cross-matching galaxies from the deep VLT/VIMOS LEGA-C spectroscopic survey with the VLA 3 GHz data set. The LEGA-C continuum spectra reveal for the first time stellar velocity dispersions and age indicators of z ̃ 1 radio galaxies. We find that z ̃ 1 radio-loud active galactic nucleus (AGN) occur exclusively in predominantly old galaxies with high velocity dispersions: σ <SUB>*</SUB> > 175 km s<SUP>-1</SUP>, corresponding to black hole masses in excess of 10<SUP>8</SUP> M <SUB>☉</SUB>. Furthermore, we confirm that at a fixed stellar mass the fraction of radio-loud AGN at z ̃ 1 is five to 10 times higher than in the local universe, suggesting that quiescent, massive galaxies at z ̃ 1 switch on as radio AGN on average once every Gyr. Our results strengthen the existing evidence for a link between high black hole masses, radio loudness, and quiescence at z ̃ 1.STAMPAenArticle10.3847/1538-4357/aa87682-s2.0-85030150499000411574000011https://iopscience.iop.org/article/10.3847/1538-4357/aa87682017ApJ...847...72BFIS/05 - ASTRONOMIA E ASTROFISICA