The XMM-SERVS survey: new XMM–Newton point-source catalogue for the XMM-LSS field. Issue 2 (25th April 2018)

• Record Type: Journal Article
• Authors: Chen (陳建廷), C-T J; Brandt, W N; Luo, B; Ranalli, P; Yang, G; Alexander, D M; Bauer, F E; Kelson, D D; Lacy, M; Nyland, K; Tozzi, P; Vito, F; Cirasuolo, M; Gilli, R; Jarvis, M J; Lehmer, B D; Paolillo, M; Schneider, D P; Shemmer, O; Smail, I; Sun, M; Tanaka, M; Vaccari, M; Vignali, C; Xue, Y Q; Banerji, M; Chow, K E; Häußler, B; Norris, R P; Silverman, J D; Trump, J R;
• Is Part Of: Monthly notices of the Royal Astronomical Society. Volume 478:Issue 2(2018)
• Page Start: 2132
• Page End: 2163
• Publication Date: 2018-04-25
• Subjects: catalogues -- surveys -- galaxies: active -- quasars: general -- X-rays: galaxies; Astronomy -- Periodicals; Periodicals; 520.5
• DOI: 10.1093/mnras/sty1036
• Languages: English
• ISSNs: 0035-8711

Abstract

ABSTRACT: We present an X-ray point-source catalogue from the XMM-Large Scale Structure (XMM-LSS) survey region, one of the XMM- Spitzer Extragalactic Representative Volume Survey (XMM-SERVS) fields. We target the XMM-LSS region with 1.3 Ms of new XMM–Newton AO-15 observations, transforming the archival X-ray coverage in this region into a 5.3 deg 2 contiguous field with uniform X-ray coverage totaling 2.7 Ms of flare-filtered exposure, with a 46 ks median PN exposure time. We provide an X-ray catalogue of 5242 sources detected in the soft (0.5–2 keV), hard (2–10 keV), and/or full (0.5–10 keV) bands with a 1 per cent expected spurious fraction determined from simulations. A total of 2381 new X-ray sources are detected compared to previous source catalogues in the same area. Our survey has flux limits of 1.7 × 10 −15, 1.3 × 10 −14, and 6.5 × 10 −15 erg cm −2 s −1 over 90 per cent of its area in the soft, hard, and full bands, respectively, which is comparable to those of the XMM-COSMOS survey. We identify multiwavelength counterpart candidates for 99.9 per cent of the X-ray sources, of which 93 per cent are considered as reliable based on their matching likelihood ratios. The reliabilities of these high-likelihood-ratio counterparts are further confirmed to be ≈97 per cent reliable based on deep Chandra coverage over ≈5 per cent of the XMM-LSS region. Results of multiwavelength identifications are also included in the source catalogue, along with basic optical-to-infrared photometry and spectroscopic redshifts from publicly available surveys. We compute photometric redshifts for X-ray sources in 4.5 deg 2 of our field where forced-aperture multiband photometry is available; >70 per cent of the X-ray sources in this subfield have either spectroscopic or high-quality photometric redshifts.