13026( 7) - 26-Mar-2015 17:11:59 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 13026 Version: 7 Check-in Time: 26-Mar-2015 17:11:59 STScI Edit Number: 0 Title XMM-Newton Target of Opportunity of Tidal Disruption Events ------------------------------------------------------------------------------------ Type Cycle GO 20 ------------------------------------------------------------------------------------ Investigators Contact? PI: Prof. Andrew J. Levan The University of Warwick Y CoI: Dr. Stephen Bradley Cenko NASA Goddard Space Flight Center N CoI: Prof. Nial R. Tanvir University of Leicester N CoI: Dr. Paul T. O'Brien University of Leicester N CoI: Prof. Joshua S. Bloom University of California - Berkeley N CoI: Ms. Rachel Tunnicliffe The University of Warwick N ------------------------------------------------------------------------------------ Abstract Tidal disruption events (TDEs), where a star is disrupted by a massive black hole provide a unique probe. They illuminate dynamics in galactic nuclei, and may provide constraints on rates of low frequency gravitational wave transients. A handful of candidates have been uncovered, with our recent discovery of a new class of relativistic TDE dramatically adding to the breadth of the population. Here we propose to characterise the spectral and temporal properties of of up to two TDEs found in AO11. As part of a multiwavelength campaign we will use XMM-Newton and HST to track the temperature; search for evidence of non-thermal components and study the long and short timescale variability. In doing so we will create unique panchromatic pictures of these events for the first time. ------------------------------------------------------------------------------------ Observations Description ------------------------ We seek to obtain UV imaging observations of two tidal disruption events. We will utilize F225W or F275W (or both) depending on the properties of the TDE. The aim of the proposal is to i) map the UV emission from the tidal disruption event and ii) precisely position the candidate on its host, relative to the likely locaiton of the black hole. For this latter aim we also ask to be able to use F606W. This provides a much higher signal to noise for ascertaining a centroid and crucially provides a larger number of background objects for relative astrometry between two epochs of observations. Recent improvements in astrometry utilize galaxies to remove the scatter from the proper motions of stars, but we will only have a sufficient number of galaxies for comparison in cases where a redder filter is used. For the UV observations we have placed the source close to the corner of the chip to mitigate CTE. For the optical observations the source is displaced in this direction, but remains closer to the centre of the chip for improved astrometry if latter observations are taken at different roll angles. ------------------------------------------------------------------------------------ 13026( 7) - 26-Mar-2015 17:11:59 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 3 ASASSN-14AE GALAXY, ACCRETION DISK RA=11H08M40.1100S, J2000 V = 17 +/- 1 DEC=+34D05'52.20" Reference Frame: Other: SDSS ------------------------------------------------------------------------------------------------------------------------------------ 4 ASASSN-14LI GALAXY, ACCRETION DISK RA=12H48M15.2300S, J2000 V = 17 DEC=+17D46'26.22" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 13026( 7) - 26-Mar-2015 17:11:59 - [ 3] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 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: 3 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.173 Line_Spacing 0.112 Coordinate_Frame POS-TARG Pattern_Orient 23.884 Angle_Between_Sides 81.785 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 13026( 7) - 26-Mar-2015 17:11:59 - [ 4] Visit: 03 Visit Requirements: SCHED 100% 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 ASASSN-14AE WFC3/UVI ACCUM UVIS2 F606W CR-SPLIT=NO 1 300 S POS TARG -30, 0; PATTERN S see below 2 1 (950 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 ASASSN-14AE WFC3/UVI ACCUM UVIS2 F275W CR-SPLIT=NO, FLASH=12 1 375 S POS TARG -60, -20; S see below PATTERN 2 2 (1020 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 | ------------------------------------------------------------------------------------------------------------------------------------ ASASSN-14AE 1 WFC3/UVI ACCUM UVIS2 F606W 1 none none none 1 250.0 S S ASASSN-14AE 1 WFC3/UVI ACCUM UVIS2 F606W 2 none none none 1 350.0 S S ASASSN-14AE 1 WFC3/UVI ACCUM UVIS2 F606W 3 none none none 1 350.0 S S ASASSN-14AE 2 WFC3/UVI ACCUM UVIS2 F275W 1 none none none 1 350.0 S S ASASSN-14AE 2 WFC3/UVI ACCUM UVIS2 F275W 2 none none none 1 350.0 S S ASASSN-14AE 2 WFC3/UVI ACCUM UVIS2 F275W 3 none none none 1 320.0 S S 13026( 7) - 26-Mar-2015 17:11:59 - [ 5] Visit: 04 Visit Requirements: SCHED 100%; ON HOLD On Hold Comments: Awaiting trigger criteria (TDE) 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 ASASSN-14LI WFC3/UVI ACCUM UVIS2-C1K F225W FLASH=12, CR-SPLIT=NO 1 150 S (600 PATTERN 3 1 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 2 ASASSN-14LI WFC3/UVI ACCUM UVIS2-C1K F275W CR-SPLIT=NO, FLASH=12 1 140 S (560 PATTERN 3 2 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 3 ASASSN-14LI WFC3/UVI ACCUM UVIS2-C1K F621M CR-SPLIT=NO 1 100 S (300 PATTERN 2 3 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 4 ASASSN-14LI WFC3/UVI ACCUM UVIS2-C1K F621M CR-SPLIT=2 1 10 S (10 S 1C-SUB 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 | ------------------------------------------------------------------------------------------------------------------------------------ ASASSN-14LI 1 WFC3/UVI ACCUM UVIS2-C1 F225W 1 none none none 1 N/A S K1C-SUB ASASSN-14LI 1 WFC3/UVI ACCUM UVIS2-C1 F225W 2 none none none 1 N/A S K1C-SUB ASASSN-14LI 1 WFC3/UVI ACCUM UVIS2-C1 F225W 3 none none none 1 N/A S K1C-SUB ASASSN-14LI 1 WFC3/UVI ACCUM UVIS2-C1 F225W 4 none none none 1 N/A S K1C-SUB ASASSN-14LI 2 WFC3/UVI ACCUM UVIS2-C1 F275W 1 none none none 1 N/A S K1C-SUB ASASSN-14LI 2 WFC3/UVI ACCUM UVIS2-C1 F275W 2 none none none 1 N/A S K1C-SUB ASASSN-14LI 2 WFC3/UVI ACCUM UVIS2-C1 F275W 3 none none none 1 N/A S K1C-SUB ASASSN-14LI 2 WFC3/UVI ACCUM UVIS2-C1 F275W 4 none none none 1 N/A S K1C-SUB ASASSN-14LI 3 WFC3/UVI ACCUM UVIS2-C1 F621M 1 none none none 1 N/A S K1C-SUB ASASSN-14LI 3 WFC3/UVI ACCUM UVIS2-C1 F621M 2 none none none 1 N/A S K1C-SUB ASASSN-14LI 3 WFC3/UVI ACCUM UVIS2-C1 F621M 3 none none none 1 N/A S K1C-SUB ASASSN-14LI 4 WFC3/UVI ACCUM UVIS2-C1 F621M none none none 1 1 N/A S K1C-SUB 13026( 7) - 26-Mar-2015 17:11:59 - [ 6] 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 | ------------------------------------------------------------------------------------------------------------------------------------ ASASSN-14LI 4 WFC3/UVI ACCUM UVIS2-C1 F621M none none none 2 1 N/A S K1C-SUB 13026( 7) - 26-Mar-2015 17:11:59 - [ 7] Visit: 05 Visit Requirements: SCHED 100%; SAME ORIENT AS 03; BEFORE 30-JUN-2015:00:00:00 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 ASASSN-14AE WFC3/UVI ACCUM UVIS2 F606W CR-SPLIT=NO 1 300 S POS TARG -30, 0; PATTERN S see below 2 1 (950 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 ASASSN-14AE WFC3/UVI ACCUM UVIS2 F275W CR-SPLIT=NO, FLASH=12 1 375 S POS TARG -60, -20; S see below PATTERN 2 2 (1020 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 | ------------------------------------------------------------------------------------------------------------------------------------ ASASSN-14AE 1 WFC3/UVI ACCUM UVIS2 F606W 1 none none none 1 250.0 S S ASASSN-14AE 1 WFC3/UVI ACCUM UVIS2 F606W 2 none none none 1 350.0 S S ASASSN-14AE 1 WFC3/UVI ACCUM UVIS2 F606W 3 none none none 1 350.0 S S ASASSN-14AE 2 WFC3/UVI ACCUM UVIS2 F275W 1 none none none 1 350.0 S S ASASSN-14AE 2 WFC3/UVI ACCUM UVIS2 F275W 2 none none none 1 350.0 S S ASASSN-14AE 2 WFC3/UVI ACCUM UVIS2 F275W 3 none none none 1 320.0 S S 13026( 7) - 26-Mar-2015 17:11:59 - [ 8] Visit: 06 Visit Requirements: SCHED 100%; SAME ORIENT AS 04; BEFORE 01-FEB-2016:00:00:00; ON HOLD On Hold Comments: Awaiting trigger criteria (TDE) 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 ASASSN-14LI WFC3/UVI ACCUM UVIS2-C1K F225W FLASH=12, CR-SPLIT=NO 1 150 S (600 PATTERN 3 1 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 2 ASASSN-14LI WFC3/UVI ACCUM UVIS2-C1K F275W CR-SPLIT=NO, FLASH=12 1 150 S (600 PATTERN 3 2 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 3 ASASSN-14LI WFC3/UVI ACCUM UVIS2-C1K F621M CR-SPLIT=NO 1 150 S (450 PATTERN 2 3 S 1C-SUB 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 | ------------------------------------------------------------------------------------------------------------------------------------ ASASSN-14LI 1 WFC3/UVI ACCUM UVIS2-C1 F225W 1 none none none 1 N/A S K1C-SUB ASASSN-14LI 1 WFC3/UVI ACCUM UVIS2-C1 F225W 2 none none none 1 N/A S K1C-SUB ASASSN-14LI 1 WFC3/UVI ACCUM UVIS2-C1 F225W 3 none none none 1 N/A S K1C-SUB ASASSN-14LI 1 WFC3/UVI ACCUM UVIS2-C1 F225W 4 none none none 1 N/A S K1C-SUB ASASSN-14LI 2 WFC3/UVI ACCUM UVIS2-C1 F275W 1 none none none 1 N/A S K1C-SUB ASASSN-14LI 2 WFC3/UVI ACCUM UVIS2-C1 F275W 2 none none none 1 N/A S K1C-SUB ASASSN-14LI 2 WFC3/UVI ACCUM UVIS2-C1 F275W 3 none none none 1 N/A S K1C-SUB ASASSN-14LI 2 WFC3/UVI ACCUM UVIS2-C1 F275W 4 none none none 1 N/A S K1C-SUB ASASSN-14LI 3 WFC3/UVI ACCUM UVIS2-C1 F621M 1 none none none 1 N/A S K1C-SUB ASASSN-14LI 3 WFC3/UVI ACCUM UVIS2-C1 F621M 2 none none none 1 N/A S K1C-SUB ASASSN-14LI 3 WFC3/UVI ACCUM UVIS2-C1 F621M 3 none none none 1 N/A S K1C-SUB 13026( 7) - 26-Mar-2015 17:11:59 - [ 9] Summary Form for Proposal 13026 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS2, UVIS2-C1K1C-SUB ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=2, CR-SPLIT=NO, FLASH=12 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BEFORE 01-FEB-2016:00:00:00, BEFORE 30-JUN-2015:00:00:00, ON HOLD , PATTERN 2 1, PATTERN 2 2, PATTERN 2 3, PATTERN 3 1, PATTERN 3 2, POS TARG -30, 0, POS TARG -60, -20, SAME ORIENT AS 03, SAME ORIENT AS 04, SCHED 100% ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F225W, F275W, F606W, F621M ------------------------------------------------------------------------------------------------------------------------------------ Target Names ASASSN-14AE, ASASSN-14LI ------------------------------------------------------------------------------------------------------------------------------------