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We present a new spectroscopic study of the dwarf galaxy Hercules (d ~ 132kpc) with data from the Anglo-Australian Telescope and its AAOmega spectrographtogether with the Two Degree Field multi-object system to solve the conundrumthat whether Hercules is tidally disrupting. We combine broadband photometry,proper motions from Gaia, and our Pristine narrow-band andmetallicity-sensitive photometry to efficiently weed out the Milky Waycontamination. Such cleaning is particularly critical in this kinematic regime,as both the transverse and heliocentric velocities of Milky Way populationsoverlap with Hercules. Thanks to this method, three new member stars areidentified, including one at almost 10rh of the satellite. All three havevelocities and metallicities consistent with that of the main body. Combiningthis new dataset with the entire literature cleaned out from contaminationshows that Hercules does not exhibit a velocity gradient (d<v>/dX =0.1+0.4/-0.2 km s-1 arcmin-1) and, as such, does not show evidence to undergotidal disruption.

The Pristine Dwarf-Galaxy survey -- V. The edges of the dwarf galaxy Hercules