Open Access

Table D.1.

Properties of stars for which we calculated their flux upper limits from RASS images. See text for details about the columns.

Star total count in background region scaled background count count in source region upper limit photon count exposure time [s] LX upper limit [erg s−1]
GJ 675 812 73.08 96 39.76 5311.15 8.79 × 1026

GJ 12613 32 2.88 10 13.31 273.803 3.13 × 1027

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