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
The HELLAS2XMM survey: VIII. Optical identifications of the extended sample. ⋆
F. Cocchia,F. Cocchia,Fabrizio Fiore,Cristian Vignali,Cristian Vignali,M. Mignoli,Marcella Brusa,Andrea Comastri,Chiara Feruglio,Chiara Feruglio,Alessandro Baldi,N. Carangelo,Paolo Ciliegi,Valerio D'Elia,F. La Franca,Roberto Maiolino,Giorgio Matt,Silvano Molendi,Gc Perola,Simonetta Puccetti +19 more
TL;DR: In this article, photometric and spectroscopic identification of 110 hard X-ray selected sources from 5 additional XMM-Newton fields, nearly doubling the original HELLAS2XMM sample, was presented.
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The BeppoSAX High Energy Large Area Survey (HELLAS) – II. Number counts and X‐ray spectral properties
Fabrizio Fiore,Paolo Giommi,Cristian Vignali,Andrea Comastri,Giorgio Matt,Gc Perola,F. La Franca,Silvano Molendi,F. Tamburelli,L. A. Antonelli +9 more
TL;DR: Hardness ratios analysis indicates that the spectra of a substantial fraction of the HEL-LAS sources (at least one third) are harder than a α E = 0.6 power law as discussed by the authors.
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The HELLAS2XMM survey. V. Near-Infrared observations of X-ray sources with extreme X/O ratios
M. Mignoli,Lucia Pozzetti,Andrea Comastri,Marcella Brusa,Marcella Brusa,Paolo Ciliegi,F. Cocchia,Fabrizio Fiore,F. La Franca,Roberto Maiolino,Giorgio Matt,Silvano Molendi,Gc Perola,Simonetta Puccetti,Paola Severgnini,Cristian Vignali +15 more
TL;DR: In this article, the authors presented the results of deep near-infrared observations of 11 hard X-ray selected sources in the Hellas2XMM survey, with faint optical magnitude (R>24) and high X-rays-to-optical flux ratio.
Journal ArticleDOI
Finding rare AGN X-ray number counts of Chandra sources in Stripe 82
Stephanie M. LaMassa,C. Megan Urry,Eilat Glikman,Nico Cappelluti,Nico Cappelluti,Francesca Civano,Francesca Civano,Andrea Comastri,Ezequiel Treister,Izone Arifin,Hans Böhringer,Carie Cardamone,Gayoung Chon,Miranda Kephart,Stephen S. Murray,Stephen S. Murray,Gordon T. Richards,Nicholas P. Ross,Joshua S. Rozner,Kevin Schawinski +19 more
TL;DR: The first results of a wide area X-ray survey within the Sloan Digital Sky Survey (SDSS) Stripe 82, a 300 deg$^2$ region of the sky with a substantial investment in multi-wavelength coverage were presented in this paper.
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SUPER: II. Spatially resolved ionised gas kinematics and scaling relations in z 2 ∼ AGN host galaxies
D. Kakkad,Vincenzo Mainieri,G. Vietri,G. Vietri,S. Carniani,Christopher Harrison,Michele Perna,Michele Perna,Jakub Scholtz,Jakub Scholtz,Jakub Scholtz,C. Circosta,C. Circosta,Giovanni Cresci,Bernd Husemann,M. Bischetti,M. Bischetti,Chiara Feruglio,Fabrizio Fiore,Alessandro Marconi,Alessandro Marconi,Paolo Padovani,Marcella Brusa,C. Cicone,Andrea Comastri,Giorgio Lanzuisi,F. Mannucci,Nicola Menci,Hagai Netzer,Enrico Piconcelli,Annagrazia Puglisi,Mara Salvato,M. Schramm,John D. Silverman,John D. Silverman,C. Vignali,G. Zamorani,Luca Zappacosta +37 more
TL;DR: In this article, the authors used adaptive optics-assisted SINFONI observations to trace ionised gas in the extended narrow line region using the [O iii] λ5007 line.