The stretching of Hercules

We present VLT/FORS2 spectroscopy of candidate blue horizontal branch (BHB) stars in the vicinity of the Hercules ultrafaint dwarf galaxy. We identi fy eight convincing Hercules BHB members, and a further five stars with similar systemic veloc ities to that of Hercules, but � 0.5 kpc from the centre of the galaxy along its major axis. It is li kely that these stars once belonged to Hercules, but have been tidally stripped and are now unbound. We emphasise the usefulness of looking for any gradient in the systemic velocity of this stretched system, which would further support our interpretation of the origi n of its elongated and distended morphology.