Journal article
Finding rare AGN: XMM-Newton and Chandra observations of SDSS Stripe 82
Monthly notices of the Royal Astronomical Society, v 436(4), pp 3581-3601
01 Dec 2013
Abstract
We have analysed the XMM-Newton and Chandra data overlapping similar to 16.5 deg(2) of Sloan Digital Sky Survey Stripe 82, including similar to 4.6 deg(2) of proprietary XMM-Newton data that we present here. In total, 3362 unique X-ray sources are detected at high significance. We derive the XMM-Newton number counts and compare them with our previously reported Chandra logN-logS relations and other X-ray surveys. The Stripe 82 X-ray source lists have been matched to multiwavelength catalogues using a maximum likelihood estimator algorithm. We discovered the highest redshift (z = 5.86) quasar yet identified in an X-ray survey. We find 2.5 times more high-luminosity (L-x >= 10(45) erg s(-1)) AGN than the smaller area Chandra and XMM-Newton survey of COSMOS and 1.3 times as many identified by XBootes. Comparing the high-luminosity active galactic nuclei (AGN) we have identified with those predicted by population synthesis models, our results suggest that this AGN population is a more important component of cosmic black hole growth than previously appreciated. Approximately a third of the X-ray sources not detected in the optical are identified in the infrared, making them candidates for the elusive population of obscured high-luminosity AGN in the early universe.
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Details
- Title
- Finding rare AGN: XMM-Newton and Chandra observations of SDSS Stripe 82
- Creators
- Stephanie M. LaMassa - Yale Center for Astronomy and Astrophysics, Physics Department, Yale University, PO Box 208120, New Haven, CT 06520-8120, USAC. Megan Urry - Yale Center for Astronomy and Astrophysics, Physics Department, Yale University, PO Box 208120, New Haven, CT 06520-8120, USANico Cappelluti - University of Maryland, Baltimore CountyFrancesca Civano - Center for Astrophysics Harvard & SmithsonianPiero Ranalli - Osservatorio astronomico di BolognaEilat Glikman - Yale Center for Astronomy and Astrophysics, Physics Department, Yale University, PO Box 208120, New Haven, CT 06520-8120, USAEzequiel Treister - University of ConcepciónGordon Richards - Drexel UniversityDavid Ballantyne - Georgia Institute of TechnologyDaniel Stern - Jet Propulsion LabAndrea Comastri - Osservatorio astronomico di BolognaCarie Cardamone - The Harriet W. Sheridan Center for Teaching and Learning, Brown University, Box 1912, 96 Waterman Street, Providence, RI 02912, USAKevin Schawinski - ETH ZurichHans Boehringer - Max Planck Inst Extraterr Phys, D-85748 Garching, GermanyGayoung Chon - High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck SocietyStephen S. Murray - Johns Hopkins UniversityPaul Green - Dartmouth CollegeKirpal Nandra - High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society
- Publication Details
- Monthly notices of the Royal Astronomical Society, v 436(4), pp 3581-3601
- Publisher
- Oxford Univ Press
- Number of pages
- 21
- Grant note
- Alfred P. Sloan Foundation National Science Foundation; National Science Foundation (NSF) National Aeronautics and Space Administration; National Aeronautics & Space Administration (NASA) U.S. Department of Energy Office of Science; United States Department of Energy (DOE)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000327798100054
- Scopus ID
- 2-s2.0-84889045646
- Other Identifier
- 991019168557704721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Astronomy & Astrophysics