11184( 2) - 04/17/07 09:52 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 11184 Version: 2 Check-in Time: 17-Apr-2007 13:51:45 STScI Edit Number: 0 Title Imaging the Shock Precursor in Tycho's SNR ------------------------------------------------------------------------------------ Type Cycle Parallel Pointing Tolerance GO 16 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. John C. Raymond Smithsonian Institution Astrophysical Observatory CoI: Dr. Parviz Ghavamian The Johns Hopkins University N CoI: Dr. Kelly Korreck Smithsonian Institution Astrophysical N Observatory CoI: Mr. Jae-Joon Lee Seoul National University N CoI: Dr. William P. Blair The Johns Hopkins University N CoI: Dr. P. Frank Winkler Middlebury College N ------------------------------------------------------------------------------------ Abstract Cosmic ray acceleration in supernova remant shocks requires shock precursors where particles are trapped by plasma turbulence. The precursors also heat and compress the upstream gas, producing H alpha emission and affecting line profiles. We propose to image the brightest non-radiative shock in Tycho's SNR to measure the brightness and width of the precursor. These measurements will constrain 2 key parameters in cosmic ray acceleration models, and they will improve the accuracy of shock speed and electron-ion equilibration derived from H alpha profiles. ------------------------------------------------------------------------------------ Observations Description ------------------------ This is a 10 orbit observation at a single pointing with WFPC2 in H alpha. Each exposure is placed at a POS-TARG to give Max Mutchler's recommended dither pattern (number 15). No CR-SPLITS are used because there are 10 separate exposures. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 11184( 2) - 04/17/07 09:52 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 TYCHO-KNOT-G ISM, SHOCK FRONT, SNR RA=00H25M52.9000S +/- 1", J2000 4.5e-16 ergs/(cm2 s arcsec2) DEC=+64D09'22.00" +/- 1" Reference Frame: ICRS Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2004.0 0.03 0.0 0.0 11184( 2) - 04/17/07 09:52 - [ 3] Visit: 01 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Three 1-orbit exposures with 3 POS-TARG values to match pattern 15 box Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TYCHO-KNOT- WFPC2 IMAGE WF3 F656N CR-SPLIT=NO 1 2700 S G ------------------------------------------------------------------------------------------------------------------------------------ 2 TYCHO-KNOT- WFPC2 IMAGE WF3 F656N CR-SPLIT=NO 1 2828 S POS TARG 0.498, 0.249 G see below ------------------------------------------------------------------------------------------------------------------------------------ 3 TYCHO-KNOT- WFPC2 IMAGE WF3 F656N CR-SPLIT=NO 1 2700 S POS TARG 0.747, 0.747 G 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 | ------------------------------------------------------------------------------------------------------------------------------------ TYCHO-KNOT-G 1 WFPC2 IMAGE WF3 F656N none none none none 1 N/A TYCHO-KNOT-G 2 WFPC2 IMAGE WF3 F656N none none none none 2 2600.0 S TYCHO-KNOT-G 3 WFPC2 IMAGE WF3 F656N none none none none 3 2700.0 S 11184( 2) - 04/17/07 09:52 - [ 4] Visit: 02 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: This is the second set of exposures in H alpha. It begins with the fourth POS-TARG of the box pattern. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TYCHO-KNOT- WFPC2 IMAGE WF3 F656N CR-SPLIT=NO 1 2700 S POS TARG 0.249, 0.498 G ------------------------------------------------------------------------------------------------------------------------------------ 2 TYCHO-KNOT- WFPC2 IMAGE WF3 F656N CR-SPLIT=NO 1 2700 S G see below ------------------------------------------------------------------------------------------------------------------------------------ 3 TYCHO-KNOT- WFPC2 IMAGE WF3 F656N CR-SPLIT=NO 1 2700 S POS TARG 0.498, 0.249 G 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 | ------------------------------------------------------------------------------------------------------------------------------------ TYCHO-KNOT-G 1 WFPC2 IMAGE WF3 F656N none none none none 1 N/A TYCHO-KNOT-G 2 WFPC2 IMAGE WF3 F656N none none none none 2 2600.0 S TYCHO-KNOT-G 3 WFPC2 IMAGE WF3 F656N none none none none 3 2600.0 S 11184( 2) - 04/17/07 09:52 - [ 5] Visit: 03 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: This is the third set of 3 orbits imaging Tycho's knot g in H alpha Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TYCHO-KNOT- WFPC2 IMAGE WF3 F656N CR-SPLIT=NO 1 2700 S POS TARG 0.747, 0.747 G ------------------------------------------------------------------------------------------------------------------------------------ 2 TYCHO-KNOT- WFPC2 IMAGE WF3 F656N CR-SPLIT=NO 1 2700 S POS TARG 0.249, 0.498 G see below ------------------------------------------------------------------------------------------------------------------------------------ 3 TYCHO-KNOT- WFPC2 IMAGE WF3 F656N CR-SPLIT=NO 1 2700 S G 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 | ------------------------------------------------------------------------------------------------------------------------------------ TYCHO-KNOT-G 1 WFPC2 IMAGE WF3 F656N none none none none 1 N/A TYCHO-KNOT-G 2 WFPC2 IMAGE WF3 F656N none none none none 2 2600.0 S TYCHO-KNOT-G 3 WFPC2 IMAGE WF3 F656N none none none none 3 2600.0 S 11184( 2) - 04/17/07 09:52 - [ 6] Visit: 04 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 TYCHO-KNOT- WFPC2 IMAGE WF3 F656N CR-SPLIT=NO 1 2700 S POS TARG 0.498, 0.249 G ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ TYCHO-KNOT-G 1 WFPC2 IMAGE WF3 F656N none none none none 1 N/A 11184( 2) - 04/17/07 09:52 - [ 7] Summary Form for Proposal 11184 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures WF3 ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements POS TARG 0.498, 0.249; POS TARG 0.747, 0.747; POS TARG 0.249, 0.498; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F656N ------------------------------------------------------------------------------------------------------------------------------------ Target Names TYCHO-KNOT-G ------------------------------------------------------------------------------------------------------------------------------------