The XMM-SERVS survey: new XMM-Newton point-source catalogue for the XMM-LSS field

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.; 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.; Häu\ssler, 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.

Citation

Chen, C.-T., Brandt, W., Luo, B., Ranalli, P., Yang, G., Alexander, D., Bauer, F., Kelson, D., Lacy, M., Nyland, K., Tozzi, P., Vito, F., Cirasuolo, M., Gilli, R., Jarvis, M., Lehmer, B., Paolillo, M., Schneider, D., Shemmer, O., Smail, I., …Trump, J. (2018). The XMM-SERVS survey: new XMM-Newton point-source catalogue for the XMM-LSS field. Monthly Notices of the Royal Astronomical Society, 478, 2132-2163. https://doi.org/10.1093/mnras/sty1036

• Journal Article Type: Article
• Acceptance Date: Apr 20, 2018
• Online Publication Date: Apr 25, 2018
• Publication Date: Apr 25, 2018
• Deposit Date: Jun 28, 2018
• Publicly Available Date: Jun 29, 2018
• Journal: Monthly Notices of the Royal Astronomical Society
• Print ISSN: 0035-8711
• Electronic ISSN: 1365-2966
• Publisher: Royal Astronomical Society
• Peer Reviewed: Peer Reviewed
• Volume: 478
• Pages: 2132-2163
• DOI: https://doi.org/10.1093/mnras/sty1036
• Public URL: https://durham-repository.worktribe.com/output/1327938
• Publisher URL: http://adsabs.harvard.edu/abs/2018MNRAS.478.2132C