Table 3.
Cross-matches of the sources in the stacked catalogue.
| Catalogue | Matches | Share | False pos. | Ref. |
|---|---|---|---|---|
| 2MASS | 16 859 | 23.4% | 32% | (1) |
| AllWISE | 40 163 | 55.8% | 7% | (2) |
| GALEX GR5 AIS | 6609 | 9.2% | 9% | (3) |
| UKIDSS DR9 LAS | 8208 | 11.4% | 18% | (4) |
| NOMAD | 31 628 | 44.0% | 20% | (5) |
| Pan-STARRS1 | 36 995 | 51.4% | 18% | (6) |
| SDSS DR12 | 21 887 | 30.4% | 29% | (7) |
| Gaia DR2 | 28 321 | 39.4% | 32% | (8) |
| Chandra CSC 2.0 pre1 | 13 771 | 19.1% | 1% | (9) |
Notes. Best X-match within a radius of 5″, given in total numbers in the column labelled “Matches” and as percentage of the 71 951 stacked catalogue sources in the column “Share”. The estimated content of false associations among the matches is given in the column “False pos’[itives].
References. (1) Skrutskie et al. (2006); (2) Cutri (2014); (3) Bianchi et al. (2011); (4) Lawrence et al. (2007); (5) Zacharias et al. (2004); (6) Chambers et al. (2016); (7) Blanton et al. (2017); (8) Gaia Collaboration (2018); (9) Evans et al. (2010).
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