8647( 22) - 08/16/00 09:04 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 8647 Version: 22 Check-in Date: 16-Aug-2000 09:02:24 1.Proposal Title: BLACK HOLE ACCRETION OUTBURSTS IN SOFT X- RAY TRANSIENTS ------------------------------------------------------------------------------------ 2. Proposal For 3. Cycle GO 9 ------------------------------------------------------------------------------------ 4. Investigators Contact? PI: Carole Haswell Open University CoI: Dr. Robert Hynes University of Southampton N CoI: Prof. Keith Horne University of St. Andrews N CoI: Dr. Chris Shrader NASA Goddard Space Flight Center N CoI: Dr. Wan Chen NASA Goddard Space Flight Center N CoI: Dr. Fuhua Cheng University of Villanova N CoI: Prof. Mario Livio Space Telescope Science Institute N CoI: Dr. Mark Wagner Ohio State University (Steward) N CoI: Prof. Edward Robinson The University of Texas at Austin N ------------------------------------------------------------------------------------ 5. Abstract UV observations of soft X-ray transients (SXTs) will be made using STIS. This is part of an extensive multiwavelength target of opportunity campaign to monitor newly discovered SXTs in outburst and throughout the subsequent decline. Recent work establishes that a high proportion of SXTs harbor black holes, so these observations provide an unrivalled opportunity to obtain high quality data from an accreting black hole. UV data is a keystone of our multiwavelength campaign because the disk regions of interest radiate predominantly in the UV. Emission lines will allow us to probe the kinematics of the inner disk region. We will examine the relative strengths of the reprocessed X-ray flux emitted in the UV, and the UV flux generated by viscous heating in the accretion flow. Multiwavelength observations will probe the physics of the accretion flow throughout the outburst. The observations will yield detailed quantitative tests of the models for SXT outbursts. The new STIS/MAMA capability to perform UV spectroscopy with 125 microsecond time resolution will be exploited. A proven HST/RXTE echo-mapping experiment will measure the size of the reprocessing regions in the accretion disk, and thus probe morphology changes as the decline proceeds. It is unknown what rapid UV variability we may find; recent RXTE discoveries suggest this may prove a rich source of information on the dynamics close to the event horizon. ------------------------------------------------------------------------------------ 8647( 22) - 08/16/00 09:04 - [ 2] Observations Description ------------------------ We plan a total of 7 HST/STIS visits to the target throughout the decline from outburst. Since we do not yet know the coordinates of the target, we assume the average visibility window of 54 minutes, and use the standard ACQ/PEAK acquisition. To calculate exposure times we assume a typical SXT lightcurve with V_max = 13.0 and E(B-V)=0.3. Where practical we aim for a signal-to-noise per resolution element of 50 for CCD observations and 30 for MAMA data. To cover the entire decline and keep the request reasonable, this goal is compromised in later visits. For CCD exposures we impose the minimum requirement that the exposure should not be read- noise dominated and that at least as much time should be spent on the target as is taken up by calibrations. Extra minutes were added or subtracted as necessary to pack the orbits; these adjustments will vary with the visibility window. Our principal observational goals are: beginitemize vspace-2mm em To obtain a high quality spectrum spanning 1150 - 10300 Angstrom from each visit. This will be accomplished with a series of observations with the G140L, G230L, G430L and G750L gratings in each visit. vspace-3mm em To obtain the best possible UV spectrum early in the outburst in order to determine the reddening of the source from the 2175 Angstrom interstellar feature (see Fig. 1). vspace-3mm em To obtain high time resolution UV data simultaneous with XTE coverage. We achieve this by taking G140L and G230L exposures in TIMETAG mode. To obtain sufficient timing data, we have budgeted more time with these gratings than demanded by pure spectral signal-to-noise requirements. vspace-2mm enditemize In addition, in the first visit we exploit the UV echelle capabilities (also in TIMETAG mode) to obtain a high resolution spectrum covering the prominent resonance lines. This potentially combines 125Mu second time resolution with superb velocity resolution. In the second visit we budget time to obtain a series of short exposures with the G430L grating to monitor variability in important lines in the blue and near ultraviolet: H-beta, HeII and various Bowen fluorescence lines. All of these were seen in the spectrum of GRO J1655- 40. The table below summarises our program. This is provisional and will change depending on the actual magnitude, reddening, and visibility window. We have, of course, prepared detailed plans for observations of targets with various reddenings and peak brightnesses. beginverbatim Visit Orbits Time V E140M G140L G230L G430L G750L (days) (mag) 1 5 0 13.00 73m 50m 34m 3m 5m 2 3 10 13.27 38m 22m 15m 5m 3 2 20 13.54 33m 21m 3m 5m 4 2 50 14.36 33m 20m 4m 5m 5 3 80 15.12 54m 25m 8m 7m 6 2 110 16.00 33m 15m 8m 7m 7 3 140 16.82 54m 25m 8m 7m endverbatim While the optical spectra could, in principle, be obtained from the ground, in practice it is difficult to get exactly coordinated ground-based spectroscopy. Since the spectrum is evolving, relying exclusively on contemporaneous optical coverage introduces highly undesirable uncertainties into our bolometric spectrum. Ground-based observations are also subject to cloud and telluric absorption features. The marginal cost of using HST to obtain near-simultaneous optical data is small (as indicated by the exposure times above) compared with the cost of making a visit to the target and taking the UV data which only HST can acquire. Real Time Justification ----------------------- The recurrence times of individual sources vary greatly, and are unpredictable, hence we require Target of Opportunity observations. There is a significant likelihood of a major transient event occurring during the duration of this proposal. Over the last 9 years five suitable targets were discovered, some showing recurrent behavior. Prompt observations, within a week of discovery if possible, are highly desirable. Early observations, when \dot M ~ \dot M_Edd hold the most potential for ground-breaking discoveries, and as the source fades, data quality will decline. We will trigger the HST program only if a major SXT, reaching ~ 1 Crab and/or V ~ 14, occurs. RXTE will make observations simultaneously with HST for echo-mapping. The burden of coordinating schedules will fall upon RXTE, which is far more flexible than HST. While logistically challenging, the superb efforts at NASA/Goddard and STScI for our 1996 campaign on GRO J1655-40 showed that this fine-tuned scheduling can be achieved. RXTE provided simultaneous data covering 4 of our 5 successful HST visits ( e.g. Figs 7, 8). We have in place a multiwavelength network of Target of Opportunity programs to observe SXTs. RXTE and GRO will provide early detection, and subsequently monitor the X-ray intensity. Hence, ``real time'' planning of observations at other wavelengths is facilitated. We hold formally approved ToOs to follow the decline in support of the HST program with RXTE (X-rays, PI Chen); AAT (optical spectra, PI Harlaftis); and UKIRT (IR photometry, PI Haswell). Other ToO proposals are pending. At Lowell and McDonald observatories we have preferred access to high quality ground-based observations. Our team includes guest observers at many other facilities, and we have a large informal network of collaborators, including radio astronomers in the US, the UK, and the Netherlands. We have demonstrated (Figs. 7 and 8) that simultaneous RXTE observations can be achieved. As planned, our 1996 HST/RXTE campaign on GRO J1655-40 was adequately supported by ground-based observations (Hynes, Haswell et al. 1998a; Hynes et al. 1998c). A northern transient would benefit from even more lavish ground-based support. The HST schedule will drive our scheduling requests of the other facilities. Calibration Justification ------------------------- Additional Comments ------------------- Need to resolve science/technical tradeoffs for this possibility in light of the news that the NDQ* neutral density filter modes may not be flux calibrated :( Hence will need to update generic phase II later. ------------------------------------------------------------------------------------ 8647( 22) - 08/16/00 09:04 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 XTE- STAR, INTERACTING RA=11H 18M 10.85S +/- 0.02S, J2000 V = 12.8 J1118+480 BINARY, X-RAY NOVAE, X- DEC=48D 2' 12.9" +/- 0.2" RAY TRANSIENT, LMXB Coordinate Source: OTHER_SOURCE 8647( 22) - 08/16/00 09:04 - [ 4] Visit: 01 Visit Priority: Visit Requirements: ON HOLD On Hold Comments: This is a target of opportunity. Coordinates, fluxes, and timing information are unknown until newly outbursting SXT triggers the program. The visit program will be tailored to the properties of the object and the visibility window. Additional Comments: Assume V=13.00. Visit goals are a) Obtain high quality multiwavelength spectrum, b) Obtain good coverage of 2175 feature to allow determination of reddening, c) Obtain extensive time-tag UV data, to correlate with XTE, d) Obtain echelle spectrum in far UV with both time-tag resolution and spanning a range of orbital phases. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 XTE-J1118+4 STIS/C ACQ F28X50L MIRROR 1 0.3 S 80 CD P ------------------------------------------------------------------------------------------------------------------------------------ 2 XTE-J1118+4 STIS/C ACQ/PEA 0.2X0.2 MIRROR 1 0.7 S 80 CD K ------------------------------------------------------------------------------------------------------------------------------------ 3 XTE-J1118+4 STIS/F TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=250 1 2150 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 4 XTE-J1118+4 STIS/N TIME-TA 0.2X0.2 E230M 1978 BUFFER-TIME=150 1 1300 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 5 XTE-J1118+4 STIS/N TIME-TA 0.2X0.2 E230M 2707 BUFFER-TIME=100 1 1200 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 6 XTE-J1118+4 STIS/F TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=250 1 1000 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 7 XTE-J1118+4 STIS/C ACCUM 52X0.5 G430L 4300 CR-SPLIT=2 1 120 S 80 CD ------------------------------------------------------------------------------------------------------------------------------------ 8 XTE-J1118+4 STIS/C ACCUM 52X0.5 G750L 7751 CR-SPLIT=2 1 150 S 80 CD ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/C ACCUM 0.3X0.0 G750L 7751 BINAXIS1=1,BINAXIS2=1 2 25 S CD 9 ------------------------------------------------------------------------------------------------------------------------------------ 10 XTE-J1118+4 STIS/C ACCUM 52X0.5 G750L 8975 CR-SPLIT=2 1 150 S 80 CD ------------------------------------------------------------------------------------------------------------------------------------ 11 CCDFLAT STIS/C ACCUM 0.3X0.0 G750L 8975 BINAXIS1=1,BINAXIS2=1 2 25 S CD 9 ------------------------------------------------------------------------------------------------------------------------------------ 8647( 22) - 08/16/00 09:04 - [ 5] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 12 XTE-J1118+4 STIS/F TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=250 1 3000 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 13 XTE-J1118+4 STIS/F TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=250 1 3000 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 8647( 22) - 08/16/00 09:04 - [ 6] Visit: 02 Visit Priority: Visit Requirements: ON HOLD AFTER 01 BY 9 D TO 11 D On Hold Comments: This is a target of opportunity. Coordinates, fluxes, and timing information are unknown until newly outbursting SXT triggers the program. The visit program will be tailored to the properties of the object and the visibility window. Additional Comments: Assume V=13.27. Visit goals are: a) Obtain high quality multiwavelength spectrum, b) Obtain extensive time-tag UV data, to correlate with XTE, c) Obtain time-resolved G430L spectra to examine variability in H-Beta, HeII and Bowen fluorescence lines. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 XTE-J1118+4 STIS/C ACQ F28X50L MIRROR 1 0.3 S 80 CD P ------------------------------------------------------------------------------------------------------------------------------------ 2 XTE-J1118+4 STIS/C ACQ/PEA 0.2X0.2 MIRROR 1 0.7 S 80 CD K ------------------------------------------------------------------------------------------------------------------------------------ 3 XTE-J1118+4 STIS/N TIME-TA 0.2X0.2 E230M 1978 BUFFER-TIME=150 1 1000 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 4 XTE-J1118+4 STIS/N TIME-TA 0.2X0.2 E230M 2707 BUFFER-TIME=100 1 700 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 5 XTE-J1118+4 STIS/C ACCUM 52X0.5 G430L 4300 CR-SPLIT=NO,SIZEAXIS2=30 29 40 S 80 CD ------------------------------------------------------------------------------------------------------------------------------------ 6 XTE-J1118+4 STIS/C ACCUM 52X0.5 G750L 7751 CR-SPLIT=2 1 150 S 80 CD ------------------------------------------------------------------------------------------------------------------------------------ 7 CCDFLAT STIS/C ACCUM 0.3X0.0 G750L 7751 BINAXIS1=1,BINAXIS2=1 2 25 S CD 9 ------------------------------------------------------------------------------------------------------------------------------------ 8 XTE-J1118+4 STIS/C ACCUM 52X0.5 G750L 8975 CR-SPLIT=2 1 150 S EXPAND 80 CD ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/C ACCUM 0.3X0.0 G750L 8975 BINAXIS1=1,BINAXIS2=1 2 25 S CD 9 ------------------------------------------------------------------------------------------------------------------------------------ 10 XTE-J1118+4 STIS/F TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=250 1 3000 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 8647( 22) - 08/16/00 09:04 - [ 7] Visit: 03 Visit Priority: Visit Requirements: ON HOLD AFTER 01 BY 19 D TO 21 D VISIBILITY INTERVAL 53 M On Hold Comments: This is a target of opportunity. Coordinates, fluxes, and timing information are unknown until newly outbursting SXT triggers the program. The visit program will be tailored to the properties of the object and the visibility window. Exposures should be lengthened or shortened as necessary Additional Comments: Assume 13.54. Visit goals are: a) Obtain high quality multiwavelength spectrum, b) Obtain time-tag UV data, to correlate with XTE. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 XTE-J1118+4 STIS/C ACQ F28X50L MIRROR 1 0.7 S 80 CD P ------------------------------------------------------------------------------------------------------------------------------------ 2 XTE-J1118+4 STIS/C ACQ/PEA 0.2X0.2 MIRROR 1 1.0 S 80 CD K ------------------------------------------------------------------------------------------------------------------------------------ 3 XTE-J1118+4 STIS/N TIME-TA 0.2X0.2 E230M 1978 BUFFER-TIME=150 1 820 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 4 XTE-J1118+4 STIS/N TIME-TA 0.2X0.2 E230M 2707 BUFFER-TIME=100 1 700 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 5 XTE-J1118+4 STIS/F TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=250 1 27 M 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 6 XTE-J1118+4 STIS/C ACCUM 52X0.5 G430L 4300 CR-SPLIT=2 1 120 S MAX DUR 80 CD ------------------------------------------------------------------------------------------------------------------------------------ 7 XTE-J1118+4 STIS/C ACCUM 52X0.5 G750L 7751 CR-SPLIT=2 1 150 S MAX DUR 80 CD ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/C ACCUM 0.3X0.0 G750L 7751 BINAXIS1=1,BINAXIS2=1 2 25 S CD 9 ------------------------------------------------------------------------------------------------------------------------------------ 8647( 22) - 08/16/00 09:04 - [ 8] Visit: 04 Visit Priority: Visit Requirements: ON HOLD AFTER 01 BY 45 D TO 55 D On Hold Comments: This is a target of opportunity. Coordinates, fluxes, and timing information are unknown until newly outbursting SXT triggers the program. The visit program will be tailored to the properties of the object and the visibility window. Additional Comments: Assume 14.36. Visit goals are: a) Obtain multiwavelength spectrum, b) Obtain time-tag UV data, to correlate with XTE. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 XTE-J1118+4 STIS/C ACQ F28X50L MIRROR 1 0.8 S GS ACQ SCENARIO SINGLE 80 CD P ------------------------------------------------------------------------------------------------------------------------------------ 2 XTE-J1118+4 STIS/C ACQ/PEA 0.2X0.2 MIRROR 1 1.2 S 80 CD K ------------------------------------------------------------------------------------------------------------------------------------ 3 XTE-J1118+4 STIS/N TIME-TA 0.2X0.2 E230M 1978 BUFFER-TIME=150 1 1000 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 4 XTE-J1118+4 STIS/N TIME-TA 0.2X0.2 E230M 2707 BUFFER-TIME=100 1 750 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 5 XTE-J1118+4 STIS/F TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=250 1 1800 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 6 XTE-J1118+4 STIS/C ACCUM 52X0.5 G430L 4300 CR-SPLIT=2 1 120 S 80 CD ------------------------------------------------------------------------------------------------------------------------------------ 7 XTE-J1118+4 STIS/C ACCUM 52X0.5 G750L 7751 CR-SPLIT=2 1 150 S EXPAND 80 CD ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/C ACCUM 0.3X0.0 G750L 7751 BINAXIS1=1,BINAXIS2=1 2 25 S CD 9 ------------------------------------------------------------------------------------------------------------------------------------ 8647( 22) - 08/16/00 09:04 - [ 9] Visit: 05 Visit Priority: Visit Requirements: ON HOLD AFTER 01 BY 75 D TO 85 D On Hold Comments: This is a target of opportunity. Coordinates, fluxes, and timing information are unknown until newly outbursting SXT triggers the program. The visit program will be tailored to the properties of the object and the visibility window. Additional Comments: Assume 13.00. Visit goals are: a) Obtain multiwavelength spectrum, b) Obtain extensive time-tag UV data, to correlate with XTE. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 XTE-J1118+4 STIS/C ACQ F28X50L MIRROR 1 1.0 S GS ACQ SCENARIO SINGLE 80 CD P ------------------------------------------------------------------------------------------------------------------------------------ 2 XTE-J1118+4 STIS/C ACQ/PEA 0.2X0.2 MIRROR 1 1.5 S 80 CD K ------------------------------------------------------------------------------------------------------------------------------------ 3 XTE-J1118+4 STIS/N TIME-TA 0.2X0.2 E230M 1978 BUFFER-TIME=150 1 1000 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 4 XTE-J1118+4 STIS/N TIME-TA 0.2X0.2 E230M 2707 BUFFER-TIME=100 1 700 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 5 XTE-J1118+4 STIS/F TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=200 1 1750 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 6 XTE-J1118+4 STIS/C ACCUM 52X0.5 G430L 4300 CR-SPLIT=2 1 150 S 80 CD ------------------------------------------------------------------------------------------------------------------------------------ 7 XTE-J1118+4 STIS/C ACCUM 52X0.5 G750L 7751 CR-SPLIT=2 1 180 S 80 CD ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/C ACCUM 0.3X0.0 G750L 7751 BINAXIS1=1,BINAXIS2=1 2 25 S CD 9 ------------------------------------------------------------------------------------------------------------------------------------ 9 XTE-J1118+4 STIS/F TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=200 1 3000 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 8647( 22) - 08/16/00 09:04 - [ 10] Visit: 06 Visit Priority: Visit Requirements: ON HOLD AFTER 01 BY 91 D TO 99 D SCHED 40% On Hold Comments: This is a target of opportunity. Coordinates, fluxes, and timing information are unknown until newly outbursting SXT triggers the program. The visit program will be tailored to the properties of the object and the visibility window. Additional Comments: Assume 13.00. Visit goals are: a) Obtain multiwavelength spectrum, b) Obtain time-tag UV data, to correlate with XTE. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 XTE-J1118+4 STIS/C ACQ F28X50L MIRROR 1 1.0 S GS ACQ SCENARIO SINGLE 80 CD P ------------------------------------------------------------------------------------------------------------------------------------ 2 XTE-J1118+4 STIS/C ACQ/PEA 0.2X0.2 MIRROR 1 1.5 S 80 CD K ------------------------------------------------------------------------------------------------------------------------------------ 3 XTE-J1118+4 STIS/N TIME-TA 0.2X0.2 E230M 1978 BUFFER-TIME=150 1 950 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 4 XTE-J1118+4 STIS/N TIME-TA 0.2X0.2 E230M 2707 BUFFER-TIME=100 1 750 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 5 XTE-J1118+4 STIS/F TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=200 1 1700 S 80 UV-MAM G A ------------------------------------------------------------------------------------------------------------------------------------ 6 XTE-J1118+4 STIS/C ACCUM 52X0.5 G430L 4300 CR-SPLIT=2 1 120 S 80 CD ------------------------------------------------------------------------------------------------------------------------------------ 7 XTE-J1118+4 STIS/C ACCUM 52X0.5 G750L 7751 CR-SPLIT=2 1 150 S EXPAND 80 CD ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/C ACCUM 0.3X0.0 G750L 7751 BINAXIS1=1,BINAXIS2=1 2 25 S CD 9 ------------------------------------------------------------------------------------------------------------------------------------ 8647( 22) - 08/16/00 09:04 - [ 11] Visit: 07 Visit Priority: Visit Requirements: ON HOLD BETWEEN 25-SEP-2000 AND 2-OCT-2000 On Hold Comments: This is a target of opportunity. Coordinates, fluxes, and timing information are unknown until newly outbursting SXT triggers the program. The visit program will be tailored to the properties of the object and the visibility window. Additional Comments: This is default visit 7 assuming target remains in a low state, likely V=16 -19. If it goes back into outburst, use visit 8 instead. This replaces G140L and G230L with E140M and E230M as noted in exposure comments. It also inserts a ACQ/PEAK as exposure 2. No changes of exposure time needed to accomodate this. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 XTE-J1118+4 STIS/C ACQ F28X50L MIRROR 1 5 S 80 CD P Comments: Should be just okay in outburst or quiescence ------------------------------------------------------------------------------------------------------------------------------------ 3 XTE-J1118+4 STIS/N TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=150 1 2050 S 80 UV-MAM G A Comments: Replace with E230M/1978 if back in outburst ------------------------------------------------------------------------------------------------------------------------------------ 4 XTE-J1118+4 STIS/F TIME-TA 52X0.5 G140L 1425 BUFFER-TIME=100 1 1250 S 80 UV-MAM G A Comments: Replace with E230M/2707 if back in outburst ------------------------------------------------------------------------------------------------------------------------------------ 5 XTE-J1118+4 STIS/C ACCUM 52X0.5 G430L 4300 CR-SPLIT=2 1 400 S 80 CD Comments: Should not saturate even if back in outburst ------------------------------------------------------------------------------------------------------------------------------------ 6 XTE-J1118+4 STIS/C ACCUM 52X0.5 G750L 7751 CR-SPLIT=2 1 300 S EXPAND 80 CD Comments: Should not saturate even if back in outburst ------------------------------------------------------------------------------------------------------------------------------------ 7 CCDFLAT STIS/C ACCUM 0.3X0.0 G750L 7751 BINAXIS1=1,BINAXIS2=1 2 25 S CD 9 ------------------------------------------------------------------------------------------------------------------------------------ 8 XTE-J1118+4 STIS/F TIME-TA 52X0.5 G140L 1425 BUFFER-TIME=200 1 3000 S 80 UV-MAM G A Comments: Replace with E140M in outburst ------------------------------------------------------------------------------------------------------------------------------------ 8647( 22) - 08/16/00 09:04 - [ 12] Visit: 08 Visit Priority: Visit Requirements: ON HOLD BETWEEN 25-SEP-2000 AND 2-OCT-2000 On Hold Comments: This is a target of opportunity. Coordinates, fluxes, and timing information are unknown until newly outbursting SXT triggers the program. The visit program will be tailored to the properties of the object and the visibility window. Additional Comments: This is alternate visit 7 if the target returns to outburst. G140L and G230L have been replaced by E140M and E230M and an ACQ/PEAK exposure has been inserted as No. 2. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 XTE-J1118+4 STIS/C ACQ F28X50L MIRROR 1 5 S 80 CD P Comments: Should be just okay in outburst or quiescence ------------------------------------------------------------------------------------------------------------------------------------ 2 XTE-J1118+4 STIS/C ACQ/PEA 0.2X0.2 MIRROR 1 0.7 S 80 CD K Comments: In case we switch elements to the echelles at the last minute ------------------------------------------------------------------------------------------------------------------------------------ 3 XTE-J1118+4 STIS/N TIME-TA 0.2X0.2 E230M 1978 BUFFER-TIME=150 1 2050 S 80 UV-MAM G A Comments: Substitution for G230L ------------------------------------------------------------------------------------------------------------------------------------ 4 XTE-J1118+4 STIS/N TIME-TA 0.2X0.2 E230M 2707 BUFFER-TIME=550 1 100 S 80 UV-MAM G A Comments: Substitution for G140L ------------------------------------------------------------------------------------------------------------------------------------ 5 XTE-J1118+4 STIS/C ACCUM 52X0.5 G430L 4300 CR-SPLIT=2 1 400 S 80 CD Comments: Should not saturate even if back in outburst ------------------------------------------------------------------------------------------------------------------------------------ 6 XTE-J1118+4 STIS/C ACCUM 52X0.5 G750L 7751 CR-SPLIT=2 1 300 S EXPAND 80 CD Comments: Should not saturate even if back in outburst ------------------------------------------------------------------------------------------------------------------------------------ 7 CCDFLAT STIS/C ACCUM 0.3X0.0 G750L 7751 BINAXIS1=1,BINAXIS2=1 2 25 S CD 9 ------------------------------------------------------------------------------------------------------------------------------------ 8 XTE-J1118+4 STIS/F TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=200 1 3000 S 80 UV-MAM G A Comments: Substitution for G140L ------------------------------------------------------------------------------------------------------------------------------------ 8647( 22) - 08/16/00 09:04 - [ 13] Summary Form for Proposal 8647 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures F28X50LP 0.2X0.2 52X0.5 0.3X0.09 ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD STIS/FUV-MAMA STIS/NUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ ACQ/PEAK TIME-TAG ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=250 BUFFER-TIME=150 BUFFER-TIME=100 CR-SPLIT=2 BINAXIS2=1 BINAXIS1=1 SIZEAXIS2=30 BUFFER-TIME=200 BUFFER-TIME=550 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ON HOLD ON HOLD AFTER 01 BY 9 D TO 11 D EXPAND ON HOLD AFTER 01 BY 19 D TO 21 D VISIBILITY INTERVAL 53 M MAX DUR ON HOLD AFTER 01 BY 45 D TO 55 D GS ACQ SCENARIO SINGLE ON HOLD AFTER 01 BY 75 D TO 85 D ON HOLD AFTER 01 BY 91 D TO 99 D SCHED 40% ON HOLD BETWEEN 25-SEP-2000 AND 2-OCT-2000 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR E140M E230M G430L G750L G230L G140L ------------------------------------------------------------------------------------------------------------------------------------ Target Names XTE-J1118+480 CCDFLAT ------------------------------------------------------------------------------------------------------------------------------------ Wavelengths 1425 1978 2707 4300 7751 8975 2376 ------------------------------------------------------------------------------------------------------------------------------------