C
Cristian Vignali
Researcher at INAF
Publications - 563
Citations - 29577
Cristian Vignali is an academic researcher from INAF. The author has contributed to research in topics: Galaxy & Active galactic nucleus. The author has an hindex of 85, co-authored 529 publications receiving 27128 citations. Previous affiliations of Cristian Vignali include Pennsylvania State University & University of Concepción.
Papers
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Journal ArticleDOI
Resolving the mid-infrared cores of local Seyferts
Poshak Gandhi,H. Horst,Alain Smette,Sebastian F. Hoenig,Andrea Comastri,Roberto Gilli,Cristian Vignali,W. J. Duschl +7 more
TL;DR: In this paper, the authors present new photometry of 16 local Seyferts including 6 Compton-thick sources in N-band filters around 12-microns, obtained with the VISIR instrument on the 8m Very Large Telescope.
Journal ArticleDOI
The HELLAS2XMM Survey. VII. The Hard X-Ray Luminosity Function of AGNs up to z = 4: More Absorbed AGNs at Low Luminosities and High Redshifts
F. La Franca,Fabrizio Fiore,Andrea Comastri,Gc Perola,N. Sacchi,Marcella Brusa,F. Cocchia,Chiara Feruglio,Giorgio Matt,Cristian Vignali,N. Carangelo,Paolo Ciliegi,A. Lamastra,Roberto Maiolino,M. Mignoli,S. Molendi,Simonetta Puccetti +16 more
TL;DR: In this paper, the cosmological evolution of the density of active galactic nuclei (AGNs) and their NH distribution as a function of the unabsorbed 2-10 keV luminosity up to redshift 4 was determined.
Journal ArticleDOI
Resolving the mid-infrared cores of local Seyferts
Poshak Gandhi,H. Horst,H. Horst,H. Horst,Alain Smette,Sebastian F. Hönig,Andrea Comastri,Roberto Gilli,Cristian Vignali,W. J. Duschl +9 more
TL;DR: In this article, the authors present new photometry of 16 local Seyferts including 6 Compton-thick sources in N -band filters around 12-μ m, obtained with the VISIR instrument on the 8m Very Large Telescope.
Journal ArticleDOI
The chandra cosmos legacy survey: overview and point source catalog
F. Civano,F. Civano,S. Marchesi,S. Marchesi,S. Marchesi,Andrea Comastri,Meg Urry,Martin Elvis,Nico Cappelluti,Simonetta Puccetti,Marcella Brusa,Marcella Brusa,G. Zamorani,Günther Hasinger,Tom Aldcroft,David M. Alexander,Viola Allevato,Hermann Brunner,Peter Capak,Alexis Finoguenov,Fabrizio Fiore,Antonella Fruscione,Roberto Gilli,K. Glotfelty,Richard E. Griffiths,Heng Hao,Fiona A. Harrison,Knud Jahnke,Jeyhan S. Kartaltepe,Alexander Karim,Stephanie M. LaMassa,Giorgio Lanzuisi,Giorgio Lanzuisi,Takamitsu Miyaji,Takamitsu Miyaji,Piero Ranalli,Mara Salvato,Mark Sargent,N. J. Scoville,Kevin Schawinski,Eva Schinnerer,Eva Schinnerer,John D. Silverman,Vernesa Smolčić,Daniel Stern,Sune Toft,B. Trakhenbrot,Ezequiel Treister,Cristian Vignali,Cristian Vignali +49 more
TL;DR: The COSMOS-Legacy survey as discussed by the authors is a 4.6Ms Chandra program that has imaged 2.2 deg2 of the COS-MOS field with an effective exposure of ≃ 160 ks over the central 1.5 deg^2 and ≃ 80 ks in the remaining area.
Journal ArticleDOI
Bolometric luminosities and Eddington ratios of X-ray selected active galactic nuclei in the XMM-COSMOS survey
Elisabeta Lusso,Andrea Comastri,Brooke Simmons,M. Mignoli,G. Zamorani,Cristian Vignali,Marcella Brusa,Francesco Shankar,Dieter Lutz,Jonathan R. Trump,Roberto Maiolino,Roberto Maiolino,Roberto Gilli,M. Bolzonella,Simonetta Puccetti,Mara Salvato,Chris Impey,Francesca Civano,Martin Elvis,Vincenzo Mainieri,John D. Silverman,Anton M. Koekemoer,Angela Bongiorno,Andrea Merloni,S. Berta,E. Le Floc'h,Benjamin Magnelli,Francesca Pozzi,L. Riguccini +28 more
TL;DR: In this article, a large sample of X-ray selected AGN with a high-quality multi-wavelength coverage from the far-infrared (now with the inclusion of Herschel data at 100 and 160 μm) to the optical-ultraviolet allows us to obtain accurate estimates of bolometric luminosities, bolometric corrections and Eddington ratios.