10600( 3) - 11/18/05 12:13 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 10600 Version: 3 Check-in Time: 18-Nov-2005 17:12:32 Title Studying the spectum of PSR B0656+14 ------------------------------------------------------------------------------------ Type Cycle Parallel Pointing Tolerance GO 14 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Oleg Y. Kargaltsev The Pennsylvania State University CoI: Dr. George G. Pavlov The Pennsylvania State University N ------------------------------------------------------------------------------------ Abstract PSR B0656+14 is the brightest intermediate-age pulsar which has been extensively studied in X-rays and optical with different instruments. The wide-band photometry of PSR B0656+14 strongly suggests the presence of spectral features between 4000 and 11, 000 A. The sensitivity and resolution of ACS/WFC opens an opportunity to study the pulsar spectrum with a higher resolution and a better S/N than it was previously possible. This will allow us to accurately measure the pulsar spectrum, confirm the spectral features and investigate their shape and strength. ------------------------------------------------------------------------------------ Observations Description ------------------------ To obtain the low-resolution spectrum of PSR 0656+14, we observe it with three medium width (9% of the central wavelength) RAMP filters (FR459M, FR647M and FR914M). Using different central wavelength settings for the RAMP filters, we obtain continuous spectral coverage from 4000 to 10, 000 A. The chosen exposure times should provide S/N about 10 for each filter and each wavelength setting. The total scientific exposure time amounts to 13 ks. The observation is divided into 2 three-orbit visits. Because this is essentially imaging observation of a point source, on-board acquisition is not required. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 10600( 3) - 11/18/05 12:13 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 PSRB0656+14 STAR, PULSAR RA=06H59M48.1500S +/- 0.5", J2000 V = 25.0+/-0.1 DEC=+14D14'21.55" +/- 0.5", B=25 PLATE-ID=02UU R=24.6 I=24 Coordinate Source: HST_IMAGE Comments: This pulsar has a proper motion of (44, -2.4) mas/yr. A pointing accuracy of 5'' is sufficient for our purposes. 10600( 3) - 11/18/05 12:13 - [ 3] Visit: 01 Visit Priority: 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 PSRB0656+14 ACS/WFC ACCUM WFC FR459M 4016 CR-SPLIT=3 1 1400 S ------------------------------------------------------------------------------------------------------------------------------------ 2 PSRB0656+14 ACS/WFC ACCUM WFC FR459M 4400 CR-SPLIT=3 1 1020 S ------------------------------------------------------------------------------------------------------------------------------------ 3 PSRB0656+14 ACS/WFC ACCUM WFC FR459M 4782 CR-SPLIT=2 1 830 S ------------------------------------------------------------------------------------------------------------------------------------ 4 PSRB0656+14 ACS/WFC ACCUM WFC FR459M 5165 CR-SPLIT=2 1 885 S ------------------------------------------------------------------------------------------------------------------------------------ 5 PSRB0656+14 ACS/WFC ACCUM WFC FR647M 5561 CR-SPLIT=3 1 1020 S ------------------------------------------------------------------------------------------------------------------------------------ 6 PSRB0656+14 ACS/WFC ACCUM WFC FR647M 6243 CR-SPLIT=3 1 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSRB0656+14 1 ACS/WFC ACCUM WFC FR459M 4016 none none none 1 1 N/A PSRB0656+14 1 ACS/WFC ACCUM WFC FR459M 4016 none none none 2 1 N/A PSRB0656+14 1 ACS/WFC ACCUM WFC FR459M 4016 none none none 3 1 N/A PSRB0656+14 2 ACS/WFC ACCUM WFC FR459M 4400 none none none 1 1 N/A PSRB0656+14 2 ACS/WFC ACCUM WFC FR459M 4400 none none none 2 1 N/A PSRB0656+14 2 ACS/WFC ACCUM WFC FR459M 4400 none none none 3 2 N/A PSRB0656+14 3 ACS/WFC ACCUM WFC FR459M 4782 none none none 1 2 N/A PSRB0656+14 3 ACS/WFC ACCUM WFC FR459M 4782 none none none 2 2 N/A PSRB0656+14 4 ACS/WFC ACCUM WFC FR459M 5165 none none none 1 2 N/A PSRB0656+14 4 ACS/WFC ACCUM WFC FR459M 5165 none none none 2 2 N/A PSRB0656+14 5 ACS/WFC ACCUM WFC FR647M 5561 none none none 1 3 N/A PSRB0656+14 5 ACS/WFC ACCUM WFC FR647M 5561 none none none 2 3 N/A PSRB0656+14 5 ACS/WFC ACCUM WFC FR647M 5561 none none none 3 3 N/A PSRB0656+14 6 ACS/WFC ACCUM WFC FR647M 6243 none none none 1 3 N/A PSRB0656+14 6 ACS/WFC ACCUM WFC FR647M 6243 none none none 2 3 N/A PSRB0656+14 6 ACS/WFC ACCUM WFC FR647M 6243 none none none 3 3 N/A 10600( 3) - 11/18/05 12:13 - [ 4] Visit: 02 Visit Priority: 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 PSRB0656+14 ACS/WFC ACCUM WFC FR647M 6825 CR-SPLIT=2 1 680 S see below ------------------------------------------------------------------------------------------------------------------------------------ 2 PSRB0656+14 ACS/WFC ACCUM WFC FR647M 7407 CR-SPLIT=2 1 680 S see below ------------------------------------------------------------------------------------------------------------------------------------ 3 PSRB0656+14 ACS/WFC ACCUM WFC FR914M 7981 CR-SPLIT=2 1 680 S see below ------------------------------------------------------------------------------------------------------------------------------------ 4 PSRB0656+14 ACS/WFC ACCUM WFC FR914M 8805 CR-SPLIT=3 1 1325 S see below ------------------------------------------------------------------------------------------------------------------------------------ 5 PSRB0656+14 ACS/WFC ACCUM WFC FR914M 9627 CR-SPLIT=5 1 2500 S see below ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSRB0656+14 1 ACS/WFC ACCUM WFC FR647M 6825 none none none 1 1 405.0 S PSRB0656+14 1 ACS/WFC ACCUM WFC FR647M 6825 none none none 2 1 405.0 S PSRB0656+14 2 ACS/WFC ACCUM WFC FR647M 7407 none none none 1 1 405.0 S PSRB0656+14 2 ACS/WFC ACCUM WFC FR647M 7407 none none none 2 1 405.0 S PSRB0656+14 3 ACS/WFC ACCUM WFC FR914M 7981 none none none 1 1 405.0 S PSRB0656+14 3 ACS/WFC ACCUM WFC FR914M 7981 none none none 2 2 342.0 S PSRB0656+14 4 ACS/WFC ACCUM WFC FR914M 8805 none none none 1 2 443.6 S PSRB0656+14 4 ACS/WFC ACCUM WFC FR914M 8805 none none none 2 2 443.6 S PSRB0656+14 4 ACS/WFC ACCUM WFC FR914M 8805 none none none 3 2 443.6 S PSRB0656+14 5 ACS/WFC ACCUM WFC FR914M 9627 none none none 1 2 502.0 S PSRB0656+14 5 ACS/WFC ACCUM WFC FR914M 9627 none none none 2 3 585.0 S PSRB0656+14 5 ACS/WFC ACCUM WFC FR914M 9627 none none none 3 3 585.0 S PSRB0656+14 5 ACS/WFC ACCUM WFC FR914M 9627 none none none 4 3 585.0 S PSRB0656+14 5 ACS/WFC ACCUM WFC FR914M 9627 none none none 5 3 585.0 S 10600( 3) - 11/18/05 12:13 - [ 5] Summary Form for Proposal 10600 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures WFC ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=3 CR-SPLIT=2 CR-SPLIT=5 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements FR459M FR647M FR914M ------------------------------------------------------------------------------------------------------------------------------------ Target Names PSRB0656+14 ------------------------------------------------------------------------------------------------------------------------------------ Wavelengths 4016 4400 4782 5165 5561 6243 6825 7407 7981 8805 9627 ------------------------------------------------------------------------------------------------------------------------------------