15257( 4) - 19-Jul-2017 23:30:39 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 15257 Version: 4 Check-in Time: 19-Jul-2017 23:30:39 STScI Edit Number: 2 Title Proper Motions, Shear, Mass-Loss Rates and C-Shocks in the HH 7-11 Jet ------------------------------------------------------------------------------------ Type Cycle GO 25 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Patrick Hartigan Rice University Y CoI: Dr. Adam Frank University of Rochester N ------------------------------------------------------------------------------------ Abstract We propose to obtain the first complete set of narrow band HST images of the iconic HH 7-11 protostellar jet. Owing to positional errors, both previous attempts to image the system failed to capture the HH 7 bow shock, arguably the best example we have of a well-resolved, strong shock in molecular gas. The proposed observations will tie together the optical and the IR emission in HH 7 and establish whether the molecular gas is heated by a continuous shock or a jump shock, physics of direct relevance to upcoming JWST observations of protostars. HST is needed to measure proper motions, to detect offsets between H-alpha and the forbidden lines that define the directions of shock propagation throughout the flow, and to resolve small scale structures present in the previous images. The portions of the jet imaged in 1995 and 1998 show several curious features, including two `rings' that may result from the jet penetrating through preexisting sheets or filaments. I f this explanation is correct, the shocks in the rings will have expanded perpendicular to the axis of the jet by measurable amounts in the last 20 years. Any shear or entrainment along the jet will manifest itself as differential motions in the shocked gas. Our proposal employs a WFC3 quad filter to measure electron densities at each pixel. Combined with proper motion measurements, these observations will allow us to separate jet material from shocked gas along the cavity, observe dynamical instabilities if they exist behind the shock, and assess the accuracy of simple mass loss calculations that depend solely upon integrated line luminosities. ------------------------------------------------------------------------------------ Observations Description ------------------------ New images in F656N, F631N, F673N will be used in part to define proper motions relative to their counterparts taken as part of GTO 6868 in 1998, and GTO 5779 in 1995. Two orbits in each filter are needed to reach the same depth as the GTO data. The near-IR continuum image was quite useful for identifying cavities in Fig 1, so we would like to redo that as well to see if the cavities have changed. Finally, we plan to use the standard [S II] 6716/ [S II] 6731 line ratio to determine electron densities. Ground-based spectra integrated over the emission imply Ne ranges between about 200 and 1500 cm-3, within the range of the [S II] density diagnostic. The F673N filter includes both [S II] 6716 and [S II] 6731, so to isolate [S II] 6716 (and extract [S II] 6731 from the difference) we propose to use the quad filter FQ672N. This filter has a smaller FOV, but it is just large enough to include all the emission. ------------------------------------------------------------------------------------ 15257( 4) - 19-Jul-2017 23:30:39 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 HH7-11 ISM, HERBIG-HARO RA=03H29M3.6223S, J2000 1e-15 OBJECT, JET, SHOCK DEC=+31D15'56.61" FRONT Reference Frame: Other: SIMBAD Extended: YES Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 2 HH7-11QUAD ISM, EMISSION LINE RA=03H29M6.8083S, J2000 1e-15 NEBULA, HERBIG-HARO DEC=+31D15'38.70" OBJECT, JET Reference Frame: ICRS Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 15257( 4) - 19-Jul-2017 23:30:39 - [ 3] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 3 Point_Spacing 2.806 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 47.11 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 3 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 2.648 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 45.511 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 15257( 4) - 19-Jul-2017 23:30:39 - [ 4] Visit: 01 (Visit 1: Ha, SII, OI) Visit Requirements: ORIENT 99D TO 100 D; GROUP 01, 02, 03 WITHIN 60D 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 HH7-11 WFC3/UVI ACCUM UVIS-CENT F656N FLASH=10 1 900 S GS ACQ SCENARIO SINGLE; S ER see below PATTERN 3 1 (5778 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 | ------------------------------------------------------------------------------------------------------------------------------------ HH7-11 1 WFC3/UVI ACCUM UVIS-CEN F656N 1 none none none 1 1428.0 S S TER HH7-11 1 WFC3/UVI ACCUM UVIS-CEN F656N 2 none none none 1 1428.0 S S TER HH7-11 1 WFC3/UVI ACCUM UVIS-CEN F656N 3 none none none 2 1461.0 S S TER HH7-11 1 WFC3/UVI ACCUM UVIS-CEN F656N 4 none none none 2 1461.0 S S TER 15257( 4) - 19-Jul-2017 23:30:39 - [ 5] Visit: 02 (Visit 1: Ha, SII, OI) Visit Requirements: ORIENT 99D TO 100 D 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 HH7-11 WFC3/UVI ACCUM UVIS-CENT F673N FLASH=7 1 900 S GS ACQ SCENARIO SINGLE; S ER see below PATTERN 3 1 (5780 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 | ------------------------------------------------------------------------------------------------------------------------------------ HH7-11 1 WFC3/UVI ACCUM UVIS-CEN F673N 1 none none none 1 1429.0 S S TER HH7-11 1 WFC3/UVI ACCUM UVIS-CEN F673N 2 none none none 1 1429.0 S S TER HH7-11 1 WFC3/UVI ACCUM UVIS-CEN F673N 3 none none none 2 1461.0 S S TER HH7-11 1 WFC3/UVI ACCUM UVIS-CEN F673N 4 none none none 2 1461.0 S S TER 15257( 4) - 19-Jul-2017 23:30:39 - [ 6] Visit: 03 (Visit 1: Ha, SII, OI) Visit Requirements: ORIENT 99D TO 100 D 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 HH7-11 WFC3/UVI ACCUM UVIS-CENT F631N FLASH=8 1 900 S GS ACQ SCENARIO SINGLE; S ER see below PATTERN 3 1 (5779 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 | ------------------------------------------------------------------------------------------------------------------------------------ HH7-11 1 WFC3/UVI ACCUM UVIS-CEN F631N 1 none none none 1 1425.0 S S TER HH7-11 1 WFC3/UVI ACCUM UVIS-CEN F631N 2 none none none 1 1432.0 S S TER HH7-11 1 WFC3/UVI ACCUM UVIS-CEN F631N 3 none none none 2 1461.0 S S TER HH7-11 1 WFC3/UVI ACCUM UVIS-CEN F631N 4 none none none 2 1461.0 S S TER 15257( 4) - 19-Jul-2017 23:30:39 - [ 7] Visit: 04 (Visit 2: I band F850LP) Visit Requirements: ORIENT 99D TO 100 D 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 HH7-11 WFC3/UVI ACCUM UVIS-CENT F850LP FLASH=5 1 900 S GS ACQ SCENARIO SINGLE; S ER see below PATTERN 2 1 (2725 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HH7-11 WFC3/UVI ACCUM UVIS-CENT F645N FLASH=9 1 900 S PATTERN 2 2 S ER see below (2787 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 | ------------------------------------------------------------------------------------------------------------------------------------ HH7-11 1 WFC3/UVI ACCUM UVIS-CEN F850LP 1 none none none 1 930.0 S S TER HH7-11 1 WFC3/UVI ACCUM UVIS-CEN F850LP 2 none none none 1 930.0 S S TER HH7-11 1 WFC3/UVI ACCUM UVIS-CEN F850LP 3 none none none 1 865.0 S S TER HH7-11 2 WFC3/UVI ACCUM UVIS-CEN F645N 1 none none none 2 929.0 S S TER HH7-11 2 WFC3/UVI ACCUM UVIS-CEN F645N 2 none none none 2 929.0 S S TER HH7-11 2 WFC3/UVI ACCUM UVIS-CEN F645N 3 none none none 2 929.0 S S TER 15257( 4) - 19-Jul-2017 23:30:39 - [ 8] Visit: 05 (Visit 3: Quad SII) Visit Requirements: ORIENT 102D TO 103 D 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 HH7-11QUAD WFC3/UVI ACCUM UVIS-QUAD FQ672N FLASH=10 1 900 S GS ACQ SCENARIO SINGLE; S see below PATTERN 3 1 (5778 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 | ------------------------------------------------------------------------------------------------------------------------------------ HH7-11QUAD 1 WFC3/UVI ACCUM UVIS-QUA FQ672N 1 none none none 1 1428.0 S S D HH7-11QUAD 1 WFC3/UVI ACCUM UVIS-QUA FQ672N 2 none none none 1 1428.0 S S D HH7-11QUAD 1 WFC3/UVI ACCUM UVIS-QUA FQ672N 3 none none none 2 1461.0 S S D HH7-11QUAD 1 WFC3/UVI ACCUM UVIS-QUA FQ672N 4 none none none 2 1461.0 S S D 15257( 4) - 19-Jul-2017 23:30:39 - [ 9] Summary Form for Proposal 15257 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS-CENTER, UVIS-QUAD ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=10, FLASH=5, FLASH=7, FLASH=8, FLASH=9 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements GROUP 01, 02, 03 WITHIN 60D, GS ACQ SCENARIO SINGLE, ORIENT 102D TO 103 D, ORIENT 99D TO 100 D, PATTERN 2 1, PATTERN 2 2, PATTERN 3 1 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F631N, F645N, F656N, F673N, F850LP, FQ672N ------------------------------------------------------------------------------------------------------------------------------------ Target Names HH7-11, HH7-11QUAD ------------------------------------------------------------------------------------------------------------------------------------