paper

X-ray sources in the 1.75 Ms Ultra Narrow Deep Field observed by XMM-Newton

arXiv:2106.10455 · doi:10.3847/1538-4357/ac0d5d

Abstract

In this work we present the results of the survey carried out on one of the deepest X-ray fields observed by the XMM-Newton satellite. The 1.75 Ms Ultra Narrow Deep Field (XMM175UNDF) survey is made by 13 observations taken over 2 years with a total exposure time of 1.75 Ms (1.372 Ms after flare-filtered) in a field of centered around the blazar 1ES 1553+113. We stacked the 13 observations reaching flux limits of , , and in the soft , hard , and full bands, respectively. Using a conservative threshold of Maximum Likelihood significance of , corresponding to , we detected 301 point-sources for which we derived positions, fluxes in different bands, and hardness ratios. Thanks to an optical follow-up carried out using the 10.4m the Gran Telescopio Canarias (GTC) on the same field in the bands, combined with WISE/2MASS IR data; we identified 244 optical/IR counterpart candidates for our X-ray sources and estimated their X-ray luminosities, redshift distribution, X-ray/optical X-ray/IR flux ratios, and absolute magnitudes. Finally, we divided this subsample in 40 non-active sources and 204 AGNs, of which 139 are classified as Seyfert galaxies and 41 as Quasars.

arXiv comment30 pages, 19 figures, to be published in ApJ

References in corpus (40)