The XMM-SERVS survey: new XMM-Newton point-source catalogue for the XMM-LSS field
Date Issued
2018
Author(s)
Chen, 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.
•
•
•
Cirasuolo, M.
•
•
Jarvis, M. J.
•
Lehmer, B. D.
•
•
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.
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 deg2 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 deg2 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.
Volume
478
Issue
2
Start page
2132
Issn Identifier
0035-8711
Ads BibCode
2018MNRAS.478.2132C
Rights
open.access
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