Table 1
Most variable eFEDS sources in the energy band (0.2–2.3) keV ordered in descending maximum amplitude values.
| ID | RA(a) | Dec(a) | NEV(b) | AMP(c) | Gaia G(d) | BP-RP(e) | Parallax(f) | PM(g) | S21(h) | Type detail | X-ray(i) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2(j) | 138.72301 | 4.44351 | 20.95 | 15.42 | 7.65 | 1.30 | 55.93 | 77.9 | SG | K/M binary | 2RXS |
| 6(j) | 131.17500 | 0.73796 | 13.59 | 10.06 | 9.93 | 1.32 | 15.40 | 108.5 | SG | K/M binary | 2RXS |
| 95 | 143.16701 | 0.44491 | 7.74 | 7.25 | 17.13 | 2.54 | 3.25 | 18.6 | SG | M 2 star | – |
| 5 | 139.16600 | 0.72883 | 3.69 | 7.23 | 6.66 | 0.56 | 14.60 | 92.0 | LG | F/later type | 2RXS |
| 1 | 144.25400 | 1.09597 | 5.43 | 5.63 | 15.97 | – | – | – | SE | Seyfert1 | 2RXS |
| 77 | 143.78000 | 4.39564 | 3.37 | 4.19 | 18.42 | 3.72 | 9.71 | 185.2 | SG | M 5.5 star | – |
| 26 | 130.92599 | 4.72626 | 2.29 | 3.94 | 12.65 | 1.37 | 1.03 | 22.7 | SG | K 4.5 star | – |
| 413 | 132.57500 | –0.30916 | 6.93 | 3.74 | 17.02 | 3.40 | 16.93 | 123.1 | SG | M 5 star | – |
| 3 | 134.07401 | –1.63477 | 3.41 | 3.72 | 17.21 | – | – | – | SE | Seyfert1 | 2RXS/XMM |
| 175 | 141.55901 | 1.09961 | 5.29 | 3.15 | 19.47 | 0.49 | 2.68 | 17.1 | SG | CV | – |
| 1295 | 132.43300 | 2.64021 | 1.95 | 2.71 | 16.21 | 2.94 | 6.54 | 2.53 | SG | M 3 star | – |
| 23(k) | 139.04300 | 1.88520 | 2.47 | 2.11 | 11.69 | 2.76 | 63.89 | 115.1 | SG | M 3 star | 2RXS |
| 358 | 135.18800 | 0.02984 | 1.06 | 2.11 | 15.78 | 2.69 | 5.13 | 18.7 | SG | M 3 star | – |
| 837 | 128.77391 | 3.03628 | – | 2.05 | 17.36 | 3.26 | 5.873 | 18.3 | SG | M 5 star | – |
| 226 | 131.05200 | 1.19534 | 2.85 | 2.04 | 12.56 | 1.18 | 2.48 | 23.1 | SG | K 3 star | – |
| 837 | 128.77391 | 3.03629 | – | 2.04 | 17.36 | 3.26 | 5.873 | 18.3 | SG | M 5 star | – |
| 223 | 143.15965 | 1.15046 | – | 2.03 | 19.40 | 0.71 | 0.07 | 7.0 | SG | CV | – |
| 306 | 134.50668 | –2.66245 | – | 1.92 | 20.02 | 0.96 | –0.25 | 0.7 | LE | J085801.77-023945.9 | 2RXS |
| 766 | 131.18000 | 5.10186 | 2.51 | 1.89 | 12.52 | 1.26 | 6.61 | 22.5 | SG | K 3 star | – |
| 4 | 130.10600 | 3.550909 | 0.67 | 1.88 | 17.76 | SE | Seyfert1 | 2RXS | |||
| 1402 | 133.32779 | –0.68684 | – | 1.86 | 12.21 | 0.75 | 1.70 | 3.9 | SG | GSC, F9.5 | – |
| 564 | 132.98309 | 4.06885 | – | 1.83 | 18.76 | 3.24 | 4.00 | – | SG | – | – |
| 1770 | 138.05299 | 1.89884 | 0.14 | 1.71 | 16.74 | 2.88 | 3.34 | 21.9 | SG | M 4 star | – |
| 154 | 139.23700 | 4.83086 | 3.86 | 1.60 | 14.13 | 1.11 | 1.79 | 33.1 | SG | K 2 star | – |
| 284 | 137.47400 | 5.20347 | 2.45 | 1.53 | 8.07 | 1.19 | 38.27 | 38.2 | SG | HD 78727 | 2RXS |
| 378 | 133.18800 | –1.61449 | 2.74 | 1.42 | 16.12 | 1.73 | 1.87 | 8.3 | SG | K 8 star | XMM |
| 1800 | 128.43800 | 1.15426 | 1.92 | 1.40 | 18.76 | 3.33 | 6.68 | 68.9 | SG | M 5 star | – |
| 5462 | 131.56800 | 1.63307 | – | 1.34 | 19.27 | 1.99 | 0.99 | 6.32 | SG | M0 star/multiple | – |
| 25 | 140.42734 | 2.51763 | 1.94 | 1.29 | 11.18 | 0.94 | 5.99 | 34.2 | SG | G 9 star | 2RXS |
| 642 | 132.67600 | 2.91918 | 1.91 | 1.17 | 14.38 | 1.73 | 4.76 | 19.3 | SG | K 8 star | – |
| 2401 | 128.41542 | –0.28630 | – | 1.03 | 14.28 | 1.08 | 0.47 | 6.18 | SG | – | – |
| 681 | 130.03400 | –1.63099 | 1.23 | 1.03 | 14.76 | 2.57 | 10.87 | 41.7 | SG | M 3 star | – |
| 1296 | 138.13300 | –0.79393 | 1.11 | 0.71 | 16.21 | 2.94 | 6.53 | – | SG | M 4 star | – |
Notes. (a) Units in degrees. (b) Normalised excess variability in units of σ. (c) Maximum amplitude variability in units of σ. (d) Gaia G-band mean magnitude (Vega). (e) Gaia BP-RP colour. (f) Gaia absolute stellar parallax in milliseconds of arc. (g) Gaia total proper motion in milliseconds of arc per year. (h) S21; classification based on Salvato et al. (2022); SG = secure Galactic: LG = likely Galactic; SE = secure extragalactic; LE = likely extragalactic. (i) Detection in 2RXS or XMM-Newton observations.(j) Unresolved binary of a K-type and a M-type companion. (k) Brightest M dwarf detected in eFEDS (Magaudda et al. 2022).
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