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Weighing black holes from zero to high redshift
A. Marconi, D. Axon, R. Maiolino +4
The application of the virial theorem provides a tool to estimate supermassive black hole (BH) masses in large samples of active galactic nuclei (AGN) with broad emission lines at…
The ESO-Spitzer Imaging extragalactic Survey (ESIS) II: VIMOS I,z wide field imaging of ELAIS-S1 and selection of distant massive galaxies
S. Berta, S. Rubele, A. Franceschini +13
(abridged) The ESIS survey is the optical follow up of the SWIRE/Spitzer in the ELAIS-S1 region of the sky. In the era of observational cosmology, the main efforts are focused on t…
Star formation in the hosts of high-z QSOs: Evidence from Spitzer PAH detections
D. Lutz, E. Sturm, L. J. Tacconi +7
We present Spitzer rest-frame mid-infrared spectroscopy of twelve z~2 mm-bright type 1 QSOs, selected from unlensed and lensed QSO samples and covering a range of AGN optical lumin…
The Hard X-ray Spectrum as a Probe for Black-Hole Growth in Radio-Quiet Active Galactic Nuclei
Ohad Shemmer, W. N. Brandt, Hagai Netzer +2
We study the hard-X-ray spectral properties of ten highly luminous radio-quiet (RQ) active galactic nuclei (AGNs) at z=1.3-3.2, including new XMM-Newton observations of four of the…
A photometric survey for Lyalpha-HeII dual emitters: Searching for Population III stars in high-redshift galaxies
Tohru Nagao, Shunji Sasaki, Roberto Maiolino +9
We present a new photometric search for high-z galaxies hosting Population III (PopIII) stars based on deep intermediate-band imaging observations obtained in the Subaru Deep Field…
A deep X-ray observation of M82 with XMM-Newton
Piero Ranalli, Andrea Comastri, Livia Origlia +1
We report on the analysis of a deep (100 ks) observation of the starburst galaxy M82 with the EPIC and RGS instruments on board the X-ray telescope XMM-Newton. The broad-band (0.5-…
The effect of radiation pressure on virial black hole mass estimates and the case of Narrow Line Seyfert 1 galaxies
Alessandro Marconi, David Axon, Roberto Maiolino +5
We consider the effect of radiation pressure from ionizing photons on black hole (BH) mass estimates based on the application of the virial theorem to broad emission lines in AGN s…