VizieR Online Data Catalog: XMM-SERVS survey: X-ray sources for W-CDF-S & ELAIS-S1 (Ni+, 2021)

There are deep archival Chandra and XMM-Newton observations in the center of the ~4.5deg² W-CDF-S field, covering a relatively small area (see Section 2). The Chandra Deep Field-South (CDF-S) survey has now reached a 7Ms depth, covering 482'²; XMM-Newton has also observed this field for 3.3Ms (covering ~790'²). The 250ks Extended Chandra Deep Field-South (E-CDF-S) survey further increases the X-ray coverage to 1128.6'². There are also several additional ~5-15ks Chandra observations in the W-CDF-S region (including four observations just to the south of E-CDF-S; PI: W. N. Brandt). These Chandra data are utilized in our study to help the multiwavelength counterpart matching of XMM-Newton sources (see Section 4).

New XMM-Newton observations in the W-CDF-S field were obtained between 2018 July and 2021 January. For the ELAIS-S1 field, XMM-Newton observations were performed between 2019 May and 2020 December. See Section 2.3 and Table 2.

To estimate the positional accuracy of the detected XMM-Newton sources in the full/soft/hard band, we first matched the sources with optical catalogs (see Section 3.4). In the NIR, we use Spitzer data from the DeepDrill data release (Lacy+ 2021MNRAS.501..892L) that includes the SERVS data (Mauduit+ 2012PASP..124..714M), and VISTA data from the VIDEO data release (see III/334) in 2020 (M. Jarvis et al. 2021, private communication) for both the W-CDF-S and ELAIS-S1 fields. In the optical, we use Hyper Suprime Cam (HSC) data from Ni+ (2019RNAAS...3....5N) for W-CDF-S and DES DR2 data (Abbott+ 2021, II/371) for ELAIS-S1 (see Table 1 for the survey descriptions).

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