A
Andrea Comastri
Researcher at INAF
Publications - 718
Citations - 52821
Andrea Comastri is an academic researcher from INAF. The author has contributed to research in topics: Galaxy & Active galactic nucleus. The author has an hindex of 111, co-authored 706 publications receiving 49119 citations. Previous affiliations of Andrea Comastri include University of Bologna & Max Planck Society.
Papers
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Journal ArticleDOI
HUBBLE IMAGING of the IONIZING RADIATION from A STAR-FORMING GALAXY at Z = 3.2 with
Eros Vanzella,S. de Barros,Kaveh Vasei,Anahita Alavi,Mauro Giavalisco,Brian Siana,Andrea Grazian,G. Hasinger,Hyewon Suh,Nico Cappelluti,Fabio Vito,Ricardo Amorín,Italo Balestra,Italo Balestra,Marcella Brusa,Francesco Calura,Marco Castellano,Andrea Comastri,Adriano Fontana,Roberto Gilli,M. Mignoli,Laura Pentericci,C. Vignali,G. Zamorani +23 more
TL;DR: In this article, the authors observed a star-forming galaxy at z = 3.2 with Hubble/WFC3 in the F336W filter, corresponding to the 730-890 angstrom rest-frame, and detected LyC emission.
Journal ArticleDOI
The HELLAS2XMM Survey. II. Multiwavelength Observations of P3: An X-Ray-bright, Optically Inactive Galaxy*
Andrea Comastri,M. Mignoli,Paolo Ciliegi,P. Severgnini,Roberto Maiolino,Marcella Brusa,Fabrizio Fiore,Alessandro Baldi,Silvano Molendi,Raffaella Morganti,Cristian Vignali,F. La Franca,Giorgio Matt,Gc Perola +13 more
TL;DR: In this paper, an extensive program of multi-wavelength follow-up observations of hard X-ray, optically quiet galaxies discovered with XMM-Newton was carried out to better understand the physical mechanisms responsible for the observed properties.
Journal ArticleDOI
Hubble imaging of the ionizing radiation from a star-forming galaxy at z=3.2 with fesc>50%
E. Vanzella,S. De Barros,Kaveh Vasei,Anahita Alavi,M. Giavalisco,Brian Siana,A. Grazian,G. Hasinger,Hyewon Suh,Nico Cappelluti,F. Vito,Ricardo Amorín,Italo Balestra,Marcella Brusa,Francesco Calura,Marco Castellano,Andrea Comastri,Adriano Fontana,Roberto Gilli,M. Mignoli,Laura Pentericci,C. Vignali,G. Zamorani +22 more
TL;DR: In this paper, the authors observed a star-forming galaxy at z = 3.2 with Hubble/WFC3 in the F336W filter, corresponding to the 730-890A rest-frame, and detect LyC emission.
Journal ArticleDOI
Steps toward Determination of the Size and Structure of the Broad-Line Region in Active Galactic Nuclei. XI. Intensive Monitoring of the Ultraviolet Spectrum of NGC 7469
Ignaz Wanders,Ignaz Wanders,Bradley M. Peterson,Danielle Alloin,Thomas R. Ayres,J. Clavel,D. M. Crenshaw,Keith Horne,Gerard A. Kriss,Julian H. Krolik,M. A. Malkan,Hagai Netzer,P. T. O'Brien,Gail A. Reichert,P. M. Rodríguez-Pascual,Willem Wamsteker,Tal Alexander,Tal Alexander,K. S. J. Anderson,Erika Benítez,N. G. Bochkarev,Alexander N. Burenkov,FZ Cheng,Stefan Collier,Andrea Comastri,M. Dietrich,D. Dultzin-Hacyan,Brian R. Espey,Alexei V. Filippenko,C. M. Gaskell,Ian M. George,Ian M. George,M. R. Goad,Luis C. Ho,Shai Kaspi,Wolfram Kollatschny,Kirk T. Korista,Ari Laor,Gordon M. MacAlpine,M. Mignoli,Simon L. Morris,K. Nandra,K. Nandra,Steve Penton,Richard W. Pogge,Roger Ptak,J. M. Rodriguez‐Espinoza,Maria Santos-Lleo,Alla I. Shapovalova,J. M. Shull,Stephanie A. Snedden,Linda S. Sparke,G. M. Stirpe,Wei-Hsin Sun,T. J. Turner,T. J. Turner,M. H. Ulrich,Tinggui Wang,C. Wei,W. F. Welsh,SJ Xue,Z.-L. Zou +61 more
TL;DR: In this article, the International Ultraviolet Explorer monitored the Seyfert 1 galaxy NGC 7469 continuously in an attempt to measure time delays between the continuum and emission-line fluxes.
Journal ArticleDOI
The obscured fraction of active galactic nuclei in the xmm-cosmos survey: a spectral energy distribution perspective
Elisabeta Lusso,Joseph F. Hennawi,Andrea Comastri,G. Zamorani,G. T. Richards,Cristian Vignali,Ezequiel Treister,Kevin Schawinski,Mara Salvato,Roberto Gilli +9 more
TL;DR: In this article, the authors estimate the obscured fraction of active galactic nucleus (AGN) luminosity as a function of luminosity and redshift for 513 Type?1 AGNs from the XMM-COSMOS survey.