Assigned ID: 535 ----- Attempting Submission 1 (Fri Feb 26 19:42:28 GMT 2010) ----- We have revised our phase II after consultation with our programme coordinator. Only change is that we have split our 3 orbits into two separate visits to assist in scheduling. Visit 1 now contains only 1 orbit with the ACS/SBC exposures. Visit 2 contains all remaining exposures with WFC3. **PC CHANGE** Added visit 21 as a shorter version of visit 01 for test scheduling as ToO We have replaced visit 1 with the exposure times of visit 21 to fit in the SCHED90 orbit. We have also adjusted the exposure times in visit 2 to fit within the SCHED70 orbit. ----- Attempting Submission 1 (Fri Jul 09 08:27:35 GMT 2010) ----- ----- Attempting Submission 2 (Sun Aug 22 15:25:45 GMT 2010) ----- ----- Attempting Submission 3 (Thu Sep 02 18:02:49 GMT 2010) ----- ----- Attempting Submission 4 (Fri Sep 03 11:55:16 GMT 2010) ----- The Ultraviolet and Optical Counterparts of the Intermediate Mass Black Hole Candidate ESO 243-49 HLX-1 We request imaging observations of the record breaking hyper-luminous X-ray source and intermediate mass black hole candidate HLX-1 in the galaxy ESO 243-49, in order to investigate the nature of recent detections of UV emission and an optical counterpart. HLX-1 is currently the best candidate for an intermediate mass black hole, the possible building blocks of super-massive black holes found in the centres of galaxies. UV emission possibly associated with the X-ray source position was recently detected in lower resolution observations with the Swift and GALEX satellites. If this emission can be tied to HLX-1 and is point-like in nature, it will likely be dominated by emission from a hot accretion disc. By obtaining UV photometry we will be able to place constraints upon the temperature of the disc and therefore the mass of the black hole. The optical counterpart may be related to disc emission, though it is also possible that it is associated with a globular cluster or nucleated dwarf galaxy. By obtaining photometry of the counterpart in near-infrared to UV wavelengths we will be able to construct a broad-band SED, which will allow us to place firm constraints on the environment around this intriguing object.
We will observe for 3 orbits in FUV, NUV, optical and NIR with the ACS/SBC, WFC3/UVIS and WFC3/IR UNRESOLVED STELLAR POPULATIONS AND GALAXY STRUCTURE 12 false 0.0 0.0 false false false false false false SUPPORTED UNIDENTIFIED ACCRETION DISK OPTICAL EMITTER ULTRAVIOLET EMITTER X-RAY EMITTER R = 23.8 +/- 0.25 J2000 01 10 28.3000 -46 04 22.30 J2000 ACS/SBC Imaging No No F140LP WFC3/UVIS Imaging No No F300X WFC3/UVIS Imaging No No F390W WFC3/UVIS Imaging No No F555W WFC3/UVIS Imaging No No F775W WFC3/IR Imaging No No F160W POS-TARG DITHER 0.636 LINE false false 2 41.788 WFC3-IR-DITHER-LINE 2 false POS-TARG DITHER 0.145 LINE false false 2 46.84 WFC3-UVIS-DITHER-LINE 3 false POS-TARG DITHER 0.179 LINE 0.116 false false 63.65 4 20.02 ACS-SBC-DITHER-BOX 4 false The scheduling data was generated by CASM 18.3.1. CASM was run in Phase II mode. /Users/saf28/Documents/My Proposals/HST/OP-cache/phase2-GO_4_2visits_shortorbits-v01.xml (Tic-Visit :proposal-id 12256 :visit-id "01" :proposal-version -1 :trans-version "20100505" :date "03-Sep-2010 12:47:58.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "28" :si-bright-earth-limb-angle 20.0 :data-volume 74064 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12256 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12256 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2741 :al-overhead-at-end 0 :internal-dur-at-end 119 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3391 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 18.3.1. CASM was run in Phase II mode. /Users/saf28/Documents/My Proposals/HST/OP-cache/phase2-GO_4_2visits_shortorbits-v02.xml (Tic-Visit :proposal-id 12256 :visit-id "02" :proposal-version -1 :trans-version "20100505" :date "03-Sep-2010 12:52:06.0" :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 2658192 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12256 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12256 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2840 :al-overhead-at-end 116 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3391 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12256 :visit-id "02" :orbit-number 2 :pcs-time 222 :si-vis-utilization 2951 :al-overhead-at-end 0 :internal-dur-at-end 426 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3391 :pcs-gap 0 ) true 2 0 A number of Science warnings are produced by the BOT for the WFC3/IR exposures, indicating minimal to extreme saturation is predicted. We don't feel this is a problem as all but two of the problem detections are associated with diffuse bright emission along the plane and bulge of the host galaxy. The other warnings are associated with bright stars well away from the target.