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Fig. 2.


Multiple radio observations at different epochs and frequencies of the field of view that contains Ross 867, Ross 868, and NVSS J171949+263007 (orange, green, and light blue apertures, respectively). Although Ross 867 shows stellar activity at different epochs and frequencies, its similar binary (Ross 868) remains undetectable at all epochs and radio frequencies. The aperture positions were estimated assuming the proper motions measured by Gaia for each observed date. Table D.1 gives the technical information for each data set inspected.

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