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Table B.1
Stellar flag.
| Sy. | Description | Definition | No. |
|---|---|---|---|
| A | Accretor warning | Accreting objects within 30 arcsec in the SIMBAD database | 111 |
| G | Extragalactic warning | AGN within 30 arcsec or a galaxy cluster within 60 arcsec in the SIMBAD database | 116 |
| O | Optical loading | “VER_OPTLOAD” is true and no RASS counterpart | 59 |
| E | Extended source | “ext_key” ≠ 0 in the 2MASS catalog | 21 |
| D | Missing 2MASS detection | 2MASS counterpart only and “rd_flg” = 0 in one band | 22 |
| P | Erroneous 2MASS photometry | “ph_qual” = X, U, F or E in one band | 467 |
| C | Extreme color | J–K < −0.25 mag or J–K > 1 mag | 311 |
| H | Hard band detection only | No values given in “RATE_B8” and “RATE_B6” | 3 |
| X | Persistent high X-ray activity | log(Fx/Fbol > −2.2 in the XMMSL2 and RASS catalog | 61 |
| T | Transient X-ray source | log(FX,XMMSL2 /Fbol > −1.5 and no RASS counterpart | 22 |
| S | High X-ray activity in the slew | Fractional contribution of the X-ray flux to the bolometric flux in the slew higher than usual for a source with the specific effective temperature (cf. Fig. 17) | 123 |
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