Search Publications
Outflows from active galactic nuclei: the BLR-NLR metallicity correlation
Valls-Gabaud, David; Du, Pu; Hu, Chen +4 more
The metallicity of active galactic nuclei (AGNs), which can be measured by emission line ratios in their broad- and narrow-line regions (BLRs and NLRs), provides invaluable information about the physical connection between the different components of AGNs. From the archival data bases of the International Ultraviolet Explorer, the Hubble Space Tel…
HESS J1640-465 - an exceptionally luminous TeV γ-ray supernova remnant
Klochkov, D.; Santangelo, A.; Quirrenbach, A. +217 more
The results of follow-up observations of the TeV γ-ray source HESS J1640-465 from 2004 to 2011 with the High Energy Stereoscopic System (HESS) are reported in this work. The spectrum is well described by an exponential cut-off power law with photon index Γ = 2.11 ± 0.09stat ± 0.10sys, and a cut-off energy of E_c = 6.0^{+2.0}_…
Black hole spin and size of the X-ray-emitting region(s) in the Seyfert 1.5 galaxy ESO 362-G18
Bianchi, S.; Fabian, A. C.; Miniutti, G. +7 more
We report results from multi-epoch X-ray observations of the Seyfert 1.5 galaxy ESO 362-G18 performed between 2005 November and 2010 June. ESO 362-G18 generally exhibits the typical X-ray spectrum of type 1 active galactic nuclei. A disc-reflection component accounts for broad residuals in the iron K band and above 10 keV, as well as for a signifi…
GRASIL-3D: an implementation of dust effects in the SEDs of simulated galaxies
Granato, G. L.; Silva, L.; Domínguez-Tenreiro, R. +5 more
We introduce a new model for the spectral energy distribution of galaxies, GRASIL-3D, which includes a careful modelling of the dust component of the interstellar medium. GRASIL-3D is an entirely new model based on the formalism of an existing and widely applied spectrophotometric model, GRASIL, but specifically designed to be interfaced with gala…
A compact, metal-rich, kpc-scale outflow in FBQS J0209-0438: detailed diagnostics from HST/COS extreme UV observations
Done, Chris; Hamann, Fred; Tejos, Nicolas +6 more
We present HST/COS observations of highly ionized absorption lines associated with a radio-loud quasar (QSO) at z = 1.1319. The absorption system has multiple velocity components, with an overall width of ≈600 km s-1, tracing gas that is largely outflowing from the QSO at velocities of a few 100 km s-1. There is an unpreceden…
Feeding versus feedback in AGN from near-infrared IFU observations: the case of Mrk 766
Storchi-Bergmann, Thaisa; Riffel, Rogemar A.; Winge, Claudia +1 more
We have mapped the emission-line flux distributions and ratios as well as the gaseous kinematics of the inner 450 pc radius of the type 1 Seyfert galaxy Mrk 766 using integral field near-infrared J- and Kl-band spectra obtained with the Gemini Near Infrared Integral Field Spectrograph at a spatial resolution of 60 pc and velocity resolu…
Herschel-ATLAS/GAMA: SDSS cross-correlation induced by weak lensing
Danese, L.; González-Nuevo, J.; Scott, D. +25 more
We report a highly significant (>10σ) spatial correlation between galaxies with S350 µm ≥ 30 mJy detected in the equatorial fields of the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) with estimated redshifts ≳ 1.5, and Sloan Digital Sky Survey (SDSS) or Galaxy And Mass Assembly (GAMA) galaxies at 0.2 ≤ z ≤ 0.6. …
The supergiant shell with triggered star formation in the dwarf irregular galaxy IC 2574: neutral and ionized gas kinematics
Moiseev, A. V.; Lozinskaya, T. A.; Egorov, O. V. +1 more
We analyse the ionized gas kinematics in the star formation regions of the supergiant shell (SGS) of the IC 2574 galaxy using observations made with the Fabry-Perot interferometer at the 6-m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences; the data of the H I Nearby Galaxy Survey (THINGS) are used to analyse t…
The Revised IRAS-FSC Redshift Catalogue (RIFSCz)
Han, Jiaxin; Wang, Lingyu; Norberg, Peder +2 more
We present a Revised IRAS-FSC Redshift Catalogue (RIFSCz) of 60 303 galaxies selected at 60 µm from the IRAS Faint Source Catalog (FSC). This revision merges in data from the Wide-field Infrared Survey Explorer All-Sky Data Release, the tenth Sloan Digital Sky Survey Data Release (DR10), the GALEX All-Sky Survey Source Catalog (GASC), the 2M…
Herschel reveals a molecular outflow in a z = 2.3 ULIRG
Valtchanov, I.; Ivison, R. J.; Smail, Ian +6 more
We report the results from a 19-h integration with the Spectral and Photometric Imaging REceiver (SPIRE) Fourier Transform Spectrometer aboard the Herschel Space Observatory which has revealed the presence of a molecular outflow from the Cosmic Eyelash (SMM J2135-0102) via the detection of blueshifted OH absorption. Detections of several fine-stru…