ESO137-001 is a small starburst galaxy in the nearby massive cluster A3627. A 70 kpc long X-ray tail behind ESO 137-001 has been revealed by both Chandra and XMM data, which makes it the only known late-type galaxy with an X-ray tail in a Coma-like cluster. Our SOAR observations also reveal a 40 kpc Halpha tail in the position of the X-ray tail, as well as ~ 30 intracluster HII regions in or around the tail. We propose HST observations of this unique galaxy to resolve the distorted galactic structures in transformation, and to search for yound star clusters in or around the tail, and to understand star formation in the galaxy and in the intracluster space. The results will be of general interest to galaxy transformation in clusters (e.g., ''Butcher-Oemler'' galaxies at z>0.3), starburst induced by ICM pressure, and intracluster star formation.

We will use WFC3 and ACS to observe a nearby cluster galaxy and its gas tail region. We will observe with WFC3 in the F275W band in one orbit. We will also observe with ACS in the F475W and F814W bands in another orbit. If ACS is not available, we will use WFC3 to observe the target in the F438W and F814W bands. ISM IN EXTERNAL GALAXIES 12 false 0.0 0.0 false false false false false SUPPORTED CLUSTER OF GALAXIES RICH CLUSTER STAR FORMING REGION measured from DSS2, offseted from the galaxy ESO137-001 to cover the gas tail range J2000 16 13 27.3000 -60 45 51.00 J2000 WFC3/UVIS Imaging No No F275W ACS/WFC Imaging No No F475W ACS/WFC Imaging No No F814W POS-TARG DITHER 3.011 LINE false false 2 85.28 ACS-WFC-DITHER-LINE 4 false POS-TARG MOSAIC DITHER 2 2.4 WFC3-UVIS-MOS-DITH-LINE false true 0.119 3 85.754 POS-TARG WFC3-UVIS-MOS-DITH-LINE 33.606 5 false The scheduling data was generated by CASM 17.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 11683 :visit-id "01" :proposal-version -1 :trans-version "20080515" :date "10-Jun-2008 14:59:50.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2003136 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 11683 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Obset :proposal-id 11683 :visit-id "01" :obset-id "A1" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 11683 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3197 :al-overhead-at-end 0 :internal-dur-at-end 349 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3531 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11683 :visit-id "01" :orbit-number 2 :pcs-time 333 :si-vis-utilization 3198 :al-overhead-at-end 116 :internal-dur-at-end 354 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3531 :pcs-gap 0 ) false 2 0