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The ELAIS deep X-ray survey.

posted on 2023-06-07, 23:38 authored by O Almaini, CJ Willott, J Manners, O Johnson, A Lawrence, JS Dunlop, RG Mann, I Perez-Fournon, E González-Solares, F Cabrera-Guerra, S Serjeant, Seb OliverSeb Oliver, M Rowan-Robinson
We present initial follow-up results of the ELAIS Deep X-ray Survey which is being undertaken with the Chandra and XMM-Newton Observatories. 235 X-ray sources are detected in our two 75 ks ACIS-I observations in the well-studied ELAIS N1 and N2 areas. 90% of the X-ray sources are identified optically to R=26 with a median magnitude of R=24. We show that objects which are unresolved optically (i.e. quasars) follow a correlation between their optical and X-ray fluxes, whereas galaxies do not. We also find that the quasars with fainter optical counterparts have harder X-ray spectra, consistent with absorption at both wavebands. Initial spectroscopic follow-up has revealed a large fraction of high-luminosity Type 2 quasars. The prospects for studying the evolution of the host galaxies of X-ray selected Type 2 AGN are considered.


Publication status

  • Published


Edited by D.M. Neumann & J.T.T. Van.

Presentation Type

  • paper

Event name

Recent results of XMM-Newton and Chandra, XXXVIth Rencontres de Moriond , XXIst Moriond Astrophysics Meeting

Event location

March 10-17, 2001 Savoie, France.

Event type


Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • No

Peer reviewed?

  • Yes

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