12300( 5) - 04-Aug-2010 19:20:31 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 12300 Version: 5 Check-in Time: 04-Aug-2010 19:20:31 STScI Edit Number: 0 Title A Deep Kinematic Investigation of Cas A's Opposing High-Velocity Ejecta Jets ------------------------------------------------------------------------------------ Type Cycle GO 18 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Robert A. Fesen Dartmouth College CoI: Mr. Dan Milisavljevic Dartmouth College N ------------------------------------------------------------------------------------ Abstract The young Galactic remnant Cas A provides perhaps our clearest look at the explosion of a high mass, core-collapse supernova. Two seemingly opposing streams or "jets" of high-velocity debris extending outward along its northeastern and southwestern limbs have expansion velocities more than twice that of the remnant's bright main shell. Interpretation of these jets has been controversial mainly based on energy considerations. However, SN debris located at the farthest tip of the NE jet is S-rich suggesting an origin deep inside the progenitor due to an overturning of layers as predicted in some aspherical explosion models. If similar ejecta were also found present in the SW jet's outermost knots, it would be strong evidence in support of an asymmetric explosion of Cas A and in turn for CCSNe in general. Unfortunately, substantial extinction toward both jets has prevented a thorough investigation of their properties and, in particular, whether they constitute a true bipolar outflow. We propose to use the WFC3/IR channel in 5 CVZ orbits to obtain a deep imaging survey of Cas A's jets to probe their true extent and structure. The combination of WFC3's high throughput at the [S II] 10287-10370 and [S III] 9069, 9531 emission lines, a pixel scale well matched to typical jet knot sizes, and decreased extinction at 1 micron will dramatically improve jet knot detections over prior ACS/WFC images. Follow-up observations in Cycle 19 will allow robust knot identification via proper motions, and KPNO 4m near-IR spectroscopy will provide knot radial velocities. Our goal is to develop a thorough 3D kinematic and chemical map of Cas A's jets which will constrain their nature and relationship to the remnant's main spherical shell of ejecta. ------------------------------------------------------------------------------------ Observations Description ------------------------ The goal is to image both outer NE and SW ejecta "jets" (high-velocity streams of SN debris) in the Cas A supernova remnant, as well as part of the main shell. Real Time Justification ----------------------- Calibration Justification ------------------------- 12300( 5) - 04-Aug-2010 19:20:31 - [ 2] Additional Comments ------------------- ------------------------------------------------------------------------------------ 12300( 5) - 04-Aug-2010 19:20:31 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 CAS-A-SW-JET ISM, EJECTA, SNR RA=23H22M56.1812S +/- 0.1", J2000 V = 21.0 +/- 2.0 -NORTH DEC=+58D48'18.63" +/- 0.1" Reference Frame: ICRS Comments: ------------------------------------------------------------------------------------------------------------------------------------ 2 CAS-A-SW-JET ISM, EJECTA, SNR RA=23H23M1.6473S +/- 0.1", J2000 V = 21.0 +/- 2.0 -SOUTH DEC=+58D46'39.09" +/- 0.1" Reference Frame: ICRS Comments: ------------------------------------------------------------------------------------------------------------------------------------ 3 CAS-A-SW ISM, EJECTA, SNR RA=23H23M16.1402S +/- 0.1", J2000 V = 21.0 +/- 2.0 DEC=+58D47'27.19" +/- 0.1" Reference Frame: ICRS Comments: ------------------------------------------------------------------------------------------------------------------------------------ 4 CAS-A-NW ISM, EJECTA, SNR RA=23H23M10.6741S +/- 0.1", J2000 V = 21.0 +/- 2.0 DEC=+58D49'6.77" +/- 0.1" Reference Frame: ICRS Comments: ------------------------------------------------------------------------------------------------------------------------------------ 5 CAS-A-CENTRA ISM, EJECTA, SNR RA=23H23M25.1669S +/- 0.1", J2000 V = 21.0 +/- 2.0 L-NORTH DEC=+58D49'54.80" +/- 0.1" Reference Frame: ICRS Comments: ------------------------------------------------------------------------------------------------------------------------------------ 6 CAS-A-CENTRA ISM, EJECTA, SNR RA=23H23M30.6331S +/- 0.1", J2000 V = 21.0 +/- 2.0 L-SOUTH DEC=+58D48'15.19" +/- 0.1" Reference Frame: ICRS Comments: ------------------------------------------------------------------------------------------------------------------------------------ 7 CAS-A-NE ISM, EJECTA, SNR RA=23H23M39.6598S +/- 0.1", J2000 V = 21.0 +/- 2.0 DEC=+58D50'42.74" +/- 0.1" Reference Frame: ICRS Comments: ------------------------------------------------------------------------------------------------------------------------------------ 8 CAS-A-EAST ISM, EJECTA, SNR RA=23H23M45.1259S +/- 0.1", J2000 V = 21.0 +/- 2.0 DEC=+58D49'3.09" +/- 0.1" Reference Frame: ICRS Comments: ------------------------------------------------------------------------------------------------------------------------------------ 9 CAS-A-NE-JET ISM, EJECTA, SNR RA=23H23M59.6188S +/- 0.1", J2000 V = 21.0 +/- 2.0 -SOUTH DEC=+58D49'50.89" +/- 0.1" Reference Frame: ICRS Comments: ------------------------------------------------------------------------------------------------------------------------------------ 10 CAS-A-NE-JET ISM, EJECTA, SNR RA=23H23M54.1527S +/- 0.1", J2000 V = 21.0 +/- 2.0 -NORTH DEC=+58D51'30.58" +/- 0.1" Reference Frame: ICRS Comments: 12300( 5) - 04-Aug-2010 19:20:31 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 12300( 5) - 04-Aug-2010 19:20:31 - [ 5] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 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 ------------------------------------------------------------------------------------------------------------------------------------ 12300( 5) - 04-Aug-2010 19:20:31 - [ 6] Visit: 01 Visit Requirements: CVZ On Hold Comments: Additional Comments: please schedule at U3=112 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CAS-A-SW-JE WFC3/IR MULTIAC IR-FIX F098M SAMP-SEQ=SPARS50, NSAMP=12 1 DEF PATTERN 1 1 T-NORTH CUM ------------------------------------------------------------------------------------------------------------------------------------ 2 CAS-A-SW-JE WFC3/IR MULTIAC IR-FIX F098M SAMP-SEQ=SPARS50, NSAMP=13 1 DEF PATTERN 1 2 T-SOUTH CUM ------------------------------------------------------------------------------------------------------------------------------------ 3 CAS-A-SW WFC3/IR MULTIAC IR-FIX F098M SAMP-SEQ=SPARS50, NSAMP=12 1 DEF PATTERN 1 3 CUM ------------------------------------------------------------------------------------------------------------------------------------ 4 CAS-A-NW WFC3/IR MULTIAC IR-FIX F098M SAMP-SEQ=SPARS50, NSAMP=12 1 DEF PATTERN 1 4 CUM ------------------------------------------------------------------------------------------------------------------------------------ 5 CAS-A-CENTR WFC3/IR MULTIAC IR-FIX F098M SAMP-SEQ=SPARS50, NSAMP=12 1 DEF PATTERN 1 5 AL-NORTH CUM ------------------------------------------------------------------------------------------------------------------------------------ 6 CAS-A-CENTR WFC3/IR MULTIAC IR-FIX F098M SAMP-SEQ=SPARS50, NSAMP=12 1 DEF PATTERN 1 6 AL-SOUTH CUM ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ CAS-A-SW-JET-NORTH 1 WFC3/IR MULTIAC IR-FIX F098M 1 none none none 1 N/A CUM CAS-A-SW-JET-NORTH 1 WFC3/IR MULTIAC IR-FIX F098M 2 none none none 1 N/A CUM CAS-A-SW-JET-NORTH 1 WFC3/IR MULTIAC IR-FIX F098M 3 none none none 1 N/A CUM CAS-A-SW-JET-NORTH 1 WFC3/IR MULTIAC IR-FIX F098M 4 none none none 1 N/A CUM CAS-A-SW-JET-SOUTH 2 WFC3/IR MULTIAC IR-FIX F098M 1 none none none 1 N/A CUM CAS-A-SW-JET-SOUTH 2 WFC3/IR MULTIAC IR-FIX F098M 2 none none none 1 N/A CUM CAS-A-SW-JET-SOUTH 2 WFC3/IR MULTIAC IR-FIX F098M 3 none none none 1 N/A CUM CAS-A-SW-JET-SOUTH 2 WFC3/IR MULTIAC IR-FIX F098M 4 none none none 1 N/A CUM CAS-A-SW 3 WFC3/IR MULTIAC IR-FIX F098M 1 none none none 2 N/A CUM 12300( 5) - 04-Aug-2010 19:20:31 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ CAS-A-SW 3 WFC3/IR MULTIAC IR-FIX F098M 2 none none none 2 N/A CUM CAS-A-SW 3 WFC3/IR MULTIAC IR-FIX F098M 3 none none none 2 N/A CUM CAS-A-SW 3 WFC3/IR MULTIAC IR-FIX F098M 4 none none none 2 N/A CUM CAS-A-NW 4 WFC3/IR MULTIAC IR-FIX F098M 1 none none none 2 N/A CUM CAS-A-NW 4 WFC3/IR MULTIAC IR-FIX F098M 2 none none none 2 N/A CUM CAS-A-NW 4 WFC3/IR MULTIAC IR-FIX F098M 3 none none none 2 N/A CUM CAS-A-NW 4 WFC3/IR MULTIAC IR-FIX F098M 4 none none none 2 N/A CUM CAS-A-CENTRAL-NORTH 5 WFC3/IR MULTIAC IR-FIX F098M 1 none none none 3 N/A CUM CAS-A-CENTRAL-NORTH 5 WFC3/IR MULTIAC IR-FIX F098M 2 none none none 3 N/A CUM CAS-A-CENTRAL-NORTH 5 WFC3/IR MULTIAC IR-FIX F098M 3 none none none 3 N/A CUM CAS-A-CENTRAL-NORTH 5 WFC3/IR MULTIAC IR-FIX F098M 4 none none none 3 N/A CUM CAS-A-CENTRAL-SOUTH 6 WFC3/IR MULTIAC IR-FIX F098M 1 none none none 3 N/A CUM CAS-A-CENTRAL-SOUTH 6 WFC3/IR MULTIAC IR-FIX F098M 2 none none none 3 N/A CUM CAS-A-CENTRAL-SOUTH 6 WFC3/IR MULTIAC IR-FIX F098M 3 none none none 3 N/A CUM CAS-A-CENTRAL-SOUTH 6 WFC3/IR MULTIAC IR-FIX F098M 4 none none none 3 N/A CUM 12300( 5) - 04-Aug-2010 19:20:31 - [ 8] Visit: 02 Visit Requirements: CVZ On Hold Comments: Additional Comments: please schedule at U3 112-112.5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CAS-A-NE WFC3/IR MULTIAC IR-FIX F098M SAMP-SEQ=SPARS50, NSAMP=11 1 DEF PATTERN 1 1 CUM ------------------------------------------------------------------------------------------------------------------------------------ 2 CAS-A-EAST WFC3/IR MULTIAC IR-FIX F098M SAMP-SEQ=SPARS50, NSAMP=12 1 DEF PATTERN 1 2 CUM ------------------------------------------------------------------------------------------------------------------------------------ 3 CAS-A-NE-JE WFC3/IR MULTIAC IR-FIX F098M SAMP-SEQ=SPARS50, NSAMP=12 1 DEF PATTERN 1 3 T-SOUTH CUM ------------------------------------------------------------------------------------------------------------------------------------ 4 CAS-A-NE-JE WFC3/IR MULTIAC IR-FIX F098M SAMP-SEQ=SPARS50, NSAMP=12 1 DEF PATTERN 1 4 T-NORTH CUM ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ CAS-A-NE 1 WFC3/IR MULTIAC IR-FIX F098M 1 none none none 1 N/A CUM CAS-A-NE 1 WFC3/IR MULTIAC IR-FIX F098M 2 none none none 1 N/A CUM CAS-A-NE 1 WFC3/IR MULTIAC IR-FIX F098M 3 none none none 1 N/A CUM CAS-A-NE 1 WFC3/IR MULTIAC IR-FIX F098M 4 none none none 1 N/A CUM CAS-A-EAST 2 WFC3/IR MULTIAC IR-FIX F098M 1 none none none 1 N/A CUM CAS-A-EAST 2 WFC3/IR MULTIAC IR-FIX F098M 2 none none none 1 N/A CUM CAS-A-EAST 2 WFC3/IR MULTIAC IR-FIX F098M 3 none none none 1 N/A CUM CAS-A-EAST 2 WFC3/IR MULTIAC IR-FIX F098M 4 none none none 1 N/A CUM CAS-A-NE-JET-SOUTH 3 WFC3/IR MULTIAC IR-FIX F098M 1 none none none 1 N/A CUM CAS-A-NE-JET-SOUTH 3 WFC3/IR MULTIAC IR-FIX F098M 2 none none none 2 N/A CUM CAS-A-NE-JET-SOUTH 3 WFC3/IR MULTIAC IR-FIX F098M 3 none none none 2 N/A CUM CAS-A-NE-JET-SOUTH 3 WFC3/IR MULTIAC IR-FIX F098M 4 none none none 2 N/A CUM 12300( 5) - 04-Aug-2010 19:20:31 - [ 9] 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 | ------------------------------------------------------------------------------------------------------------------------------------ CAS-A-NE-JET-NORTH 4 WFC3/IR MULTIAC IR-FIX F098M 1 none none none 2 N/A CUM CAS-A-NE-JET-NORTH 4 WFC3/IR MULTIAC IR-FIX F098M 2 none none none 2 N/A CUM CAS-A-NE-JET-NORTH 4 WFC3/IR MULTIAC IR-FIX F098M 3 none none none 2 N/A CUM CAS-A-NE-JET-NORTH 4 WFC3/IR MULTIAC IR-FIX F098M 4 none none none 2 N/A CUM 12300( 5) - 04-Aug-2010 19:20:31 - [ 10] Summary Form for Proposal 12300 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR-FIX ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR ------------------------------------------------------------------------------------------------------------------------------------ Opmodes MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=11, NSAMP=12, NSAMP=13, SAMP-SEQ=SPARS50 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements CVZ, PATTERN 1 1, PATTERN 1 2, PATTERN 1 3, PATTERN 1 4, PATTERN 1 5, PATTERN 1 6 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F098M ------------------------------------------------------------------------------------------------------------------------------------ Target Names CAS-A-CENTRAL-NORTH, CAS-A-CENTRAL-SOUTH, CAS-A-EAST, CAS-A-NE, CAS-A-NE-JET-NORTH, CAS-A-NE-JET-SOUTH, CAS-A-NW, CAS-A-SW, CAS-A-SW-JET-NORTH, CAS-A-SW-JET-SOUTH ------------------------------------------------------------------------------------------------------------------------------------