Physical Sciences and Mathematics Commons^™

Co(1-0) In Z Gtrsim 4 Quasar Host Galaxies: No Evidence For Extended Molecular Gas Reservoirs, Da Riechers, F Walter, Cl Carilli, Kk Knudsen, Ky Lo, Dj Benford, Jg Staguhn, Tr Hunter, F Bertoldi, C Henkel, Km Menten, Axel Weiss, Min Yun, Nz Scoville

Astronomy Department Faculty Publication Series

We present ¹²CO(J = 1 → 0) observations of the high-redshift quasi-stellar objects (QSOs) BR 1202-0725 (z = 4.69), PSS J2322+1944 (z = 4.12), and APM 08279+5255 (z = 3.91) using the NRAO Green Bank Telescope (GBT) and the MPIfR Effelsberg 100 m telescope. We detect, for the first time, the CO ground-level transition in BR 1202-0725. For PSS J2322+1944 and APM 08279+5255, our observations result in line fluxes that are consistent with previous NRAO Very Large Array (VLA) observations, but they reveal the full line profiles. We report a typical lensing-corrected velocity-integrated intrinsic ^{12 …}