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High-z X-ray Obscured Quasars in Galaxies with Extreme Mid-IR/Optical Colors

Piconcelli, E. and Lanzuisi, G. and Fiore, F. and Feruglio, C. and Vignali, C. and Salvato, M. and Gruppioni, C. (2009) High-z X-ray Obscured Quasars in Galaxies with Extreme Mid-IR/Optical Colors. In: Simbol-X: Focusing on the Hard X-ray Universe. AIP Conference Proceedings. No.1126. American Institute of Physics , Melville, NY, pp. 231-234. ISBN 978-0-07354-0662-9. http://resolver.caltech.edu/CaltechAUTHORS:20160505-161131765

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Abstract

Extreme Optical/Mid‐IR color cuts have been used to uncover a population of dust‐enshrouded, mid‐IR luminous galaxies at high redshifts. Several lines of evidence point towards the presence of an heavily absorbed, possibly Compton‐thick quasar at the heart of these systems. Nonetheless, the X‐ray spectral properties of these intriguing sources still remain largely unexplored. Here we present an X‐ray spectroscopic study of a large sample of 44 extreme dust‐obscured galaxies (EDOGs) with F_(24μm)/F_R > 2000 and F_(24μm) > 1.3 mJy selected from a 6 deg^2 region in the SWIRE fields. The application of our selection criteria to a wide area survey has been capable of unveiling a population of X‐ray luminous, absorbed z > 1 quasars which is mostly missed in the traditional optical/X‐ray surveys performed so far. Advances in the understanding of the X‐ray properties of these recently‐discovered sources by Simbol‐X observations will be also discussed.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1063/1.3149421DOIArticle
http://scitation.aip.org/content/aip/proceeding/aipcp/10.1063/1.3149421PublisherArticle
ORCID:
AuthorORCID
Gruppioni, C.0000-0002-5836-4056
Additional Information:© 2009 American Institute of Physics. Published online 11 May 2009.
Subject Keywords:Galaxies: active - Galaxies: nuclei - Infrared: galaxies - X-ray: galaxies
Classification Code:PACS: 98.54.Cm-98.54.Ep
Record Number:CaltechAUTHORS:20160505-161131765
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160505-161131765
Official Citation:High‐z X‐ray Obscured Quasars in Galaxies with Extreme Mid‐IR/Optical Colors Piconcelli, E. and Lanzuisi, G. and Fiore, F. and Feruglio, C. and Vignali, C. and Salvato, M. and Grappioni, C., AIP Conference Proceedings, 1126, 231-234 (2009), DOI:http://dx.doi.org/10.1063/1.3149421
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:66701
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:09 May 2016 17:28
Last Modified:30 Nov 2017 22:02

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