Table A.1
Basic X-ray properties of the sample stars; columns 1 and 2 list the eROSITA and Gaia EDR3 names, columns 3 and 4 give the X-ray positions, column 5 the offset between X-ray and optical position, column 6 the measured eRASS1 count rate, columns 7 the association probability and column 8 is a flag indicating the subgroup the object belongs to.
| SRG Name | Gaia ID | α (deg) | δ (deg) | Match (arcsec) | Rate (cts/s) | Prob. | Group |
|---|---|---|---|---|---|---|---|
| eRASSU J113929.2-652348 | Gaia EDR3 5236523877939131008 | 174.8717 | −65.3969 | 3.7 | 4.92 101 | 0.86 | UCL |
| eRASSU J160901.8-390512 | Gaia EDR3 5997410491550194816 | 242.2577 | −39.0867 | 0.6 | 1.29 101 | 1.00 | LCC |
| eRASSU J134401.1-612157 | Gaia EDR3 5865871998528696576 | 206.0048 | −61.3658 | 2.3 | 1.02 101 | 0.99 | UCL |
| eRASSU J121733.6-675739 | Gaia EDR3 5859405805013401984 | 184.3902 | −67.9610 | 0.5 | 9.02 100 | 1.00 | UCL |
| eRASSU J114451.8-643853 | Gaia EDR3 5332613291464347392 | 176.2162 | −64.6482 | 1.8 | 7.59 100 | 1.00 | UCL |
| eRASSU J153701.9-313640 | Gaia EDR3 6208381582919629568 | 234.2582 | −31.6112 | 1.8 | 7.05 100 | 1.00 | LCC |
| eRASSU J152024.1-303733 | Gaia EDR3 6208166357818567680 | 230.1008 | −30.6260 | 1.7 | 6.48 100 | 1.00 | LCC |
| eRASSU J160538.0-203947 | Gaia EDR3 6244019542218710912 | 241.4087 | −20.6632 | 0.9 | 6.20 100 | 1.00 | US |
| eRASSU J125608.9-612724 | Gaia EDR3 6055724499479516544 | 194.0372 | −61.4568 | 2.9 | 6.15 100 | 1.00 | UCL |
| eRASSU J121131.5-581652 | Gaia EDR3 6071307396762179200 | 182.8814 | −58.2814 | 1.5 | 5.41 100 | 1.00 | UCL |
| eRASSU J164944.6-362422 | Gaia EDR3 6019764628108588160 | 252.4358 | −36.4063 | 0.3 | 5.37 100 | 1.00 | LCC |
| eRASSU J160335.4-224557 | Gaia EDR3 6243154501445899264 | 240.8977 | −22.7658 | 0.7 | 5.35 100 | 1.00 | US |
| eRASSU J121858.0-573719 | Gaia EDR3 6071727753787733120 | 184.7420 | −57.6221 | 1.0 | 4.73 100 | 1.00 | UCL |
| eRASSU J121906.8-630951 | Gaia EDR3 6054173981974483328 | 184.7784 | −63.1644 | 2.4 | 4.25 100 | 0.99 | UCL |
| eRASSU J154131.2-252036 | Gaia EDR3 6238094097954087808 | 235.3801 | −25.3435 | 0.3 | 4.11 100 | 1.00 | US |
| eRASSU J153129.6-302154 | Gaia EDR3 6209492506280547200 | 232.8734 | −30.3651 | 0.4 | 4.07 100 | 1.00 | LCC |
| eRASSU J125928.2-555113 | Gaia EDR3 6061481095694462976 | 194.8676 | −55.8536 | 2.1 | 3.81 100 | 1.00 | UCL |
| eRASSU J122720.1-581835 | Gaia EDR3 6059526198381792000 | 186.8339 | −58.3099 | 2.8 | 3.74 100 | 0.97 | UCL |
| eRASSU J145944.5-342547 | Gaia EDR3 6203845650778424960 | 224.9357 | −34.4298 | 1.1 | 3.69 100 | 1.00 | LCC |
| eRASSU J143548.1-524057 | Gaia EDR3 5897665511103933824 | 218.9507 | −52.6826 | 1.9 | 3.67 100 | 1.00 | LCC |
| eRASSU J124807.5-443915 | Gaia EDR3 6138425847095084288 | 192.0313 | −44.6543 | 2.8 | 3.36 100 | 0.98 | UCL |
| eRASSU J162740.1-242205 | Gaia EDR3 6049153921054413440 | 246.9173 | −24.3682 | 2.0 | 3.27 100 | 1.00 | US |
| eRASSU J161028.8-221348 | Gaia EDR3 6242860961897271168 | 242.6202 | −22.2301 | 0.3 | 3.14 100 | 1.00 | US |
| eRASSU J165451.2-245534 | Gaia EDR3 4113215554323332096 | 253.7135 | −24.9263 | 1.5 | 3.13 100 | 1.00 | US |
| eRASSU J122420.5-544353 | Gaia EDR3 6076080033122502400 | 186.0857 | −54.7316 | 0.4 | 3.11 100 | 1.00 | UCL |
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