The XMM-Newton wide-field survey in the COSMOS field. I. Survey description

G. Hasinger, N. Cappelluti, H. Brunner, M. Brusa, A. Comastri, M. Elvis, A. Finoguenov, F. Fiore, A. Franceschini, R. Gilli, R. E. Griffiths, I. Lehmann, V. Mainieri, G. Matt, I. Matute, T. Miyaji, S. Molendi, S. Paltani, D. B. Sanders, N. ScovilleL. Tresse, C. M. Urry, P. Vettolani, G. Zamorani

Research output: Contribution to journalReview article

245 Scopus citations

Abstract

We present the first set of XMM-Newton EPIC observations in the 2 deg 2 COSMOS field. The strength of the COSMOS project is the unprecedented combination of a large solid angle and sensitivity over the whole multiwavelength spectrum. The XMM-Newton observations are very efficient in localizing and identifying active galactic nuclei (AGNs) and clusters, as well as groups of galaxies. One of the primary goals of the XMM-Newton Cosmos survey is to study the coevolution of active galactic nuclei as a function of their environment in the cosmic web. Here we present the log of observations, images, and a summary of first research highlights for the first pass of 25 XMM-Newton pointings across the field. In the existing data set we have detected 1416 new X-ray sources in the 0.5-2, 2-4.5, and 4.5-10 keV bands to an equivalent 0.5-2 keV flux limit of 7 × 10 -16 erg cm -2 s -1. The number of sources is expected to grow to almost 2000 in the final coverage of the survey. From an X-ray color-color analysis we identify a population of heavily obscured, partially leaky or reflecting absorbers, most of which are likely to be nearby, Compton-thick AGNs.

Original languageEnglish (US)
Pages (from-to)29-37
Number of pages9
JournalAstrophysical Journal, Supplement Series
Volume172
Issue number1
DOIs
StatePublished - 2007

Keywords

  • Cosmology: observations
  • Dark matter
  • Galaxies: evolution
  • Galaxies: formation
  • Large-scale structure of universe
  • X-rays: galaxies

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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