Browsing by Subject "quasars: general"

Now showing items 1-8 of 8

    • Active galactic nuclei at z ˜ 1.5 - I. Spectral energy distribution and accretion discs 
      Capellupo, D. M.; Netzer, H.; Lira Teillery, Paulina; Trakhtenbrot, B.; Mejía-Restrepo, Julian (Royal Astronomical Society, 2015)
      The physics of active super massive black holes (BHs) is governed by their mass (MBH), spin (a∗), and accretion rate (M˙ ). This work is the first in a series of papers with the aim of testing how these parameters determine ...
    • Extended Lyα emission around quasars with eclipsing damped Lyα systems 
      Fathivavsari, H.; Petitjean, P.; Noterdaeme, P.; Paris, I.; Finley, H.; López, S.; Srianand, R. (2016)
      We present spectroscopic observations of six high redshift (z(em) > 2) quasars, which have been selected for their Lyman alpha (Ly alpha) emission region being only partially covered by a strong proximate (z(abs) similar ...
    • Luminosity function from dedicated SDSS-III and MMT data of quasars in 0.7 < z < 4.0 selected with a new approach 
      Palanque-Delabrouille, Nathalie; Magneville, Ch.; Yèche, Ch.; Eftekharzadeh, S.; Myers, A. D.; Petitjean, P.; Pâris, I.; Aubourg, E.; McGreer, I.; Fan, X.; Dey, A.; Schlegel, D.; Bailey, S.; Bizayev, D.; Bolton, A.; Dawson, K.; Ebelke, G.; Ge, J.; Malanushenko, E.; Malanushenko, V.; Oravetz, D.; Pan, K.; Ross, N. P.; Schneider, D. P.; Sheldon, E.; Simmons, A.; Tinker, J.; White, M.; Willmer, Ch. (ESO, 2013)
      We present a measurement of the quasar luminosity function in the range 0.68 < z < 4 down to extinction corrected magnitude gdered = 22.5, using a simple and well understood target selection technique based on the ...
    • MOJAVE. XVII. Jet Kinematics and Parent Population Properties of Relativistically Beamed Radio-loud Blazars 
      Lister, M. L.; Homan, D. C.; Hovatta, T.; Kellermann, K. I.; Kiehlmann, S.; Kovalev, Y. Y.; Max-Moerbeck, W.; Pushkarev, A. B.; Readhead, A. C.S.; Ros, E.; Savolainen, T. (Institute of Physics Publishing, 2019)
      © 2019. The American Astronomical Society. All rights reserved. We present results from a parsec-scale jet kinematics study of 409 bright radio-loud active galactic nuclei (AGNs) based on 15 GHz Very Long Baseline Array ...
    • Reverberation Mapping of Luminous Quasars at High z 
      Lira Teillery, Paulina; Kaspi, Shai; Netzer, Hagai; Botti, Ismael; Morrell, Nidia; Mejia-Restrepo, Julián; Sánchez-Sáez, Paula; Martínez-Palomera, Jorge; López, Paula (Institute of Physics Publishing, 2018)
      We present reverberation mapping (RM) results for 17 high-redshift, high-luminosity quasars with good-quality R-band and emission-line light curves. We are able to measure statistically significant lags for Lyα (11 objects), ...
    • Searching for molecular outflows in hyperluminous infrared galaxies 
      Calderón, D.; Bauer, F. E.; Veilleux, S.; Gracia Carpio, J.; Sturm, E.; Lira Teillery, Paulina; Schulze, S.; Kim, S. (2016)
      We present constraints on the molecular outflows in a sample of five hyperluminous infrared galaxies using Herschel observations of the OH doublet at 119 mu m. We have detected the OH doublet in three cases: one purely in ...
    • Star formation black hole growth and dusty tori in the most luminous agns AT Z = 2–3.5 
      Netzer, Hagai; Lani, Caterina; Nordon, Raanan; Trakhtenbrot, Benny; Lira Teillery, Paulina; Shemmer, Ohad (The American Astronomical Society, 2016-03-10)
      We report Herschel/SPIRE observations of 100 very luminous, optically selected active galactic nuclei (AGNs) at $z=2\mbox{--}3.5$ with $\mathrm{log}$ ${L}_{{\rm{1350}}}$ (erg s−1) ≥ 46.5 , where ${L}_{{\rm{1350}}}$ is λLλ ...
    • Supermassive black holes in the EAGLE Universe. Revealing the observables of their growth 
      Rosas Guevara, Yetli; Bower, Richard G.; Schaye, Joop; McAlpine, Stuart; Dalla Vecchia, Claudio; Frenk, Carlos S.; Schaller, Matthieu; Theuns, Tom (2016)
      We investigate the evolution of supermassive black holes in the 'Evolution and Assembly of GaLaxies and their Environments' (EAGLE) cosmological hydrodynamic simulations. The largest of the EAGLE volumes covers a (100 cMpc) ...