14057( 4) - 17-Nov-2015 14:44:29 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 14057 Version: 4 Check-in Time: 17-Nov-2015 14:44:29 STScI Edit Number: 2 Title Changes in the X-ray irradiation of an ultraluminous X-ray source ------------------------------------------------------------------------------------ Type Cycle GO 23 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Fabien Grise Universite de Strasbourg I Y CoI: Dr. Timothy Paul Roberts Durham Univ. N CoI: Dr. Philip Kaaret University of Iowa N CoI: Dr. Jari Kajava ESA-European Space Astronomy Centre N CoI: Dr. Roberto Soria Curtin University N CoI: Dr. Jeanette Gladstone University of Alberta N CoI: Dr. Luca Zampieri Osservatorio Astronomico di Padova N ------------------------------------------------------------------------------------ Abstract Optical emission observed from ultraluminous X-ray sources (ULXs) comes from the irradiated disk and the donor star. Disentangling the two components has always been an unsolved problem. We have discovered that the ULX NGC 1313 X-2 switches between two distinct X-ray spectral/luminosity states on long timescales, ~ 6--10 weeks. This makes it an ideal laboratory to study the effects of variable X-ray irradiation on the disk and donor star. We propose a multiband study of NGC 1313 X-2 from near-IR to X-rays, with XMM, HST and Swift. We will measure the contribution of X-ray reprocessing to the optical emission and determine whether irradiation correlates with disk winds. ------------------------------------------------------------------------------------ Observations Description ------------------------ This joint proposal aims to observe an ultraluminous X-ray source in two distinct X-ray modes. Two target of opportunity sets of observations will be triggered using an X-ray monitoring with Swift. Once triggered, a simultaneous HST/XMM observation should be carried out within 28 days. The HST observations consist of imaging in seven broad-band filters, from far-UV to NIR wavelengths using ACS/SBC, WFC3/UVIS and WFC3/IR. ------------------------------------------------------------------------------------ 14057( 4) - 17-Nov-2015 14:44:29 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC1313X-2 UNIDENTIFIED, ACCRETION RA=03H18M22.2600S, J2000 V = 23.6 +/- 0.1 DISK, OPTICAL EMITTER, DEC=-66D36'3.56" ULTRAVIOLET EMITTER, WIND, X-RAY EMITTER Reference Frame: Other: SIMBAD Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 14057( 4) - 17-Nov-2015 14:44:29 - [ 3] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-LINE-3PT Pattern_Purpose DITHER Number_Of_Points 3 Point_Spacing 0.135 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 46.84 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-BOX-MIN Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.572 Line_Spacing 0.365 Coordinate_Frame POS-TARG Pattern_Orient 18.528 Angle_Between_Sides 74.653 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 3 Primary_Pattern Secondary_Pattern Pattern_Type ACS-SBC-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.179 Line_Spacing 0.116 Coordinate_Frame POS-TARG Pattern_Orient 20.02 Angle_Between_Sides 63.65 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 14057( 4) - 17-Nov-2015 14:44:29 - [ 4] Visit: 01 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC1313X-2 ACS/SBC ACCUM SBC F140LP 1 300 S GS ACQ SCENARIO BASE1B3; (1200 S) PATTERN 3 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC1313X-2 WFC3/UVI ACCUM UVIS2 F336W FLASH=11 1 339 S GS ACQ SCENARIO BASE1B3; S (1017 S) PATTERN 1 2 ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC1313X-2 WFC3/UVI ACCUM UVIS2 F814W 1 580 S PATTERN 1 3 S (1740 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC1313X-2 WFC3/UVI ACCUM UVIS2 F225W FLASH=11 1 480 S PATTERN 1 4 S (1440 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC1313X-2 WFC3/UVI ACCUM UVIS2 F438W FLASH=10 1 350 S PATTERN 1 5 S (1050 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC1313X-2 WFC3/UVI ACCUM UVIS2 F555W FLASH=2 1 390 S PATTERN 1 6 S (1170 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC1313X-2 WFC3/IR MULTIAC IR F125W NSAMP=14, SAMP-SEQ=STEP50 1 DEF PATTERN 2 7 CUM (1796.935 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NGC1313X-2 1 ACS/SBC ACCUM SBC F140LP 1 none none none 1 N/A NGC1313X-2 1 ACS/SBC ACCUM SBC F140LP 2 none none none 1 N/A NGC1313X-2 1 ACS/SBC ACCUM SBC F140LP 3 none none none 1 N/A NGC1313X-2 1 ACS/SBC ACCUM SBC F140LP 4 none none none 1 N/A NGC1313X-2 2 WFC3/UVI ACCUM UVIS2 F336W 1 none none none 1 N/A S NGC1313X-2 2 WFC3/UVI ACCUM UVIS2 F336W 2 none none none 1 N/A S NGC1313X-2 2 WFC3/UVI ACCUM UVIS2 F336W 3 none none none 2 N/A S NGC1313X-2 3 WFC3/UVI ACCUM UVIS2 F814W 1 none none none 2 N/A S NGC1313X-2 3 WFC3/UVI ACCUM UVIS2 F814W 2 none none none 2 N/A S 14057( 4) - 17-Nov-2015 14:44:29 - [ 5] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NGC1313X-2 3 WFC3/UVI ACCUM UVIS2 F814W 3 none none none 2 N/A S NGC1313X-2 4 WFC3/UVI ACCUM UVIS2 F225W 1 none none none 2 N/A S NGC1313X-2 4 WFC3/UVI ACCUM UVIS2 F225W 2 none none none 3 N/A S NGC1313X-2 4 WFC3/UVI ACCUM UVIS2 F225W 3 none none none 3 N/A S NGC1313X-2 5 WFC3/UVI ACCUM UVIS2 F438W 1 none none none 3 N/A S NGC1313X-2 5 WFC3/UVI ACCUM UVIS2 F438W 2 none none none 3 N/A S NGC1313X-2 5 WFC3/UVI ACCUM UVIS2 F438W 3 none none none 3 N/A S NGC1313X-2 6 WFC3/UVI ACCUM UVIS2 F555W 1 none none none 3 N/A S NGC1313X-2 6 WFC3/UVI ACCUM UVIS2 F555W 2 none none none 4 N/A S NGC1313X-2 6 WFC3/UVI ACCUM UVIS2 F555W 3 none none none 4 N/A S NGC1313X-2 7 WFC3/IR MULTIAC IR F125W 1 none none none 4 N/A CUM NGC1313X-2 7 WFC3/IR MULTIAC IR F125W 2 none none none 4 N/A CUM NGC1313X-2 7 WFC3/IR MULTIAC IR F125W 3 none none none 4 N/A CUM NGC1313X-2 7 WFC3/IR MULTIAC IR F125W 4 none none none 4 N/A CUM 14057( 4) - 17-Nov-2015 14:44:29 - [ 6] Visit: 02 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC1313X-2 ACS/SBC ACCUM SBC F140LP 1 300 S PATTERN 3 1 (1200 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC1313X-2 WFC3/UVI ACCUM UVIS2 F336W FLASH=11 1 339 S PATTERN 1 2 S (1017 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC1313X-2 WFC3/UVI ACCUM UVIS2 F814W 1 580 S PATTERN 1 3 S (1740 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC1313X-2 WFC3/UVI ACCUM UVIS2 F225W FLASH=11 1 480 S PATTERN 1 4 S (1440 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC1313X-2 WFC3/UVI ACCUM UVIS2 F438W FLASH=10 1 350 S PATTERN 1 5 S (1050 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC1313X-2 WFC3/UVI ACCUM UVIS2 F555W FLASH=2 1 390 S PATTERN 1 6 S (1170 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC1313X-2 WFC3/IR MULTIAC IR F125W NSAMP=14, SAMP-SEQ=STEP50 1 DEF PATTERN 2 7 CUM (1796.935 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NGC1313X-2 1 ACS/SBC ACCUM SBC F140LP 1 none none none 1 N/A NGC1313X-2 1 ACS/SBC ACCUM SBC F140LP 2 none none none 1 N/A NGC1313X-2 1 ACS/SBC ACCUM SBC F140LP 3 none none none 1 N/A NGC1313X-2 1 ACS/SBC ACCUM SBC F140LP 4 none none none 1 N/A NGC1313X-2 2 WFC3/UVI ACCUM UVIS2 F336W 1 none none none 1 N/A S NGC1313X-2 2 WFC3/UVI ACCUM UVIS2 F336W 2 none none none 1 N/A S NGC1313X-2 2 WFC3/UVI ACCUM UVIS2 F336W 3 none none none 2 N/A S NGC1313X-2 3 WFC3/UVI ACCUM UVIS2 F814W 1 none none none 2 N/A S NGC1313X-2 3 WFC3/UVI ACCUM UVIS2 F814W 2 none none none 2 N/A S 14057( 4) - 17-Nov-2015 14:44:29 - [ 7] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NGC1313X-2 3 WFC3/UVI ACCUM UVIS2 F814W 3 none none none 2 N/A S NGC1313X-2 4 WFC3/UVI ACCUM UVIS2 F225W 1 none none none 2 N/A S NGC1313X-2 4 WFC3/UVI ACCUM UVIS2 F225W 2 none none none 3 N/A S NGC1313X-2 4 WFC3/UVI ACCUM UVIS2 F225W 3 none none none 3 N/A S NGC1313X-2 5 WFC3/UVI ACCUM UVIS2 F438W 1 none none none 3 N/A S NGC1313X-2 5 WFC3/UVI ACCUM UVIS2 F438W 2 none none none 3 N/A S NGC1313X-2 5 WFC3/UVI ACCUM UVIS2 F438W 3 none none none 3 N/A S NGC1313X-2 6 WFC3/UVI ACCUM UVIS2 F555W 1 none none none 3 N/A S NGC1313X-2 6 WFC3/UVI ACCUM UVIS2 F555W 2 none none none 4 N/A S NGC1313X-2 6 WFC3/UVI ACCUM UVIS2 F555W 3 none none none 4 N/A S NGC1313X-2 7 WFC3/IR MULTIAC IR F125W 1 none none none 4 N/A CUM NGC1313X-2 7 WFC3/IR MULTIAC IR F125W 2 none none none 4 N/A CUM NGC1313X-2 7 WFC3/IR MULTIAC IR F125W 3 none none none 4 N/A CUM NGC1313X-2 7 WFC3/IR MULTIAC IR F125W 4 none none none 4 N/A CUM 14057( 4) - 17-Nov-2015 14:44:29 - [ 8] Summary Form for Proposal 14057 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR, SBC, UVIS2 ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/SBC, WFC3/IR, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=10, FLASH=11, FLASH=2, NSAMP=14, SAMP-SEQ=STEP50 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements GS ACQ SCENARIO BASE1B3, PATTERN 1 2, PATTERN 1 3, PATTERN 1 4, PATTERN 1 5, PATTERN 1 6, PATTERN 2 7, PATTERN 3 1 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F125W, F140LP, F225W, F336W, F438W, F555W, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC1313X-2 ------------------------------------------------------------------------------------------------------------------------------------