We present the discovery of a 70 kpc X-ray tail behind the small late-type galaxy ESO 137-001 in the nearby , hot ( T=6.5 keV ) merging cluster A3627 , from both Chandra and XMM-Newton observations .
The tail has a length-to-width ratio of \sim 10 .
It is luminous ( L _ { 0.5 - 2 keV } \sim 10 ^ { 41 } ergs s ^ { -1 } ) , with a temperature of \sim 0.7 keV and an X-ray M _ { gas } of \sim 10 ^ { 9 } M _ { \odot } ( \sim 10 % of the galaxy ’ s stellar mass ) .
We interpret this tail as the stripped interstellar medium of ESO 137-001 mixed with the hot cluster medium , when this blue galaxy is being converted into a gas-poor galaxy .
Three X-ray point sources are detected in the axis of the tail , which may imply active star formation in the tail .
The straightness and narrowness of the tail also implies that the ICM turbulence is not strong on scales of 20 - 70 kpc .