16492( 6) - 24-Feb-2021 15:52:25 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 16492 Version: 6 Check-in Time: 24-Feb-2021 15:52:25 STScI Edit Number: 0 Title SOFIA and HST Multi-wavelength Study of the Symbiotic Mira HM Sge ------------------------------------------------------------------------------------ Type Cycle GO/DD 28 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Steven R Goldman Space Telescope Science Institute Y CoI: Dr. Ravi Sankrit Space Telescope Science Institute N CoI: Dr. Edward J Montiel Louisiana State University and A & M N College CoI: Dr. Matthew Richter University of California - Davis N CoI: Nicole Karnath Universities Space Research Association N ------------------------------------------------------------------------------------ Abstract To showcase the capabilities of evolved-star science using the instrument modes of SOFIA and the Hubble Space Telescope (HST), we propose to use FORCAST and EXES aboard SOFIA, and WFC3 and COS aboard HST to probe the quickly-evolving symbiotic system HM Sge. We will use SOFIA to probe the dust and the kinematics of the dense circum-stellar material, and HST to map the gas in the inner nebula and probe the shocked emission. These observations will provide a public dataset that can be used to anchor future observations of HM Sge, a post-outburst symbiotic Mira that displays a wide and diverse range of active astrophysical phenomena. The observations will also demonstrate the possibilities for future observations of other evolved-star systems. ------------------------------------------------------------------------------------ Observations Description ------------------------ With WFC3 we are targeting the F502N([O iii]), F656N(Halpha), and F658N([N ii]) filters with three short exposures to image the inner nebula around the symbiotic system, and then a longer exposure (also F658N; [N ii]) that will saturate at the core, but that will capture the morphology of the more extended surrounding nebula. We will also do three pointings with COS, one on the central system, and two on the previously identified shocked regions to the North and South. For each of these pointing we will use the G140L/800 and G230L/2950 gratings. ------------------------------------------------------------------------------------ 16492( 6) - 24-Feb-2021 15:52:25 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 HM-SGE STAR, AGB STAR, RA=19H41M57.0760S +/- 1", J2000 V = 11.1 SYMBIOTIC STAR DEC=+16D44'39.86" +/- 1" Reference Frame: ICRS Extended: YES Comments: Co-ordinates and proper motions from SIMBAD, which uses GAIA DR2. V magnitude as listed in SIMBAD ; however AAVSO data shows that V varies between 11.5 and 12.5. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 2.0906443748678363E-4 -0.010131 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 2 HM-SGE-N STAR, EMISSION LINE RA-OFF=-0.000888889D, J2000 V = 35 NEBULA DEC-OFF=3.5", FROM 1 Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 3 HM-SGE-S STAR, EMISSION LINE RA-OFF=+0.00138889D, J2000 V = 35 NEBULA DEC-OFF=-2.5", FROM 1 Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 16492( 6) - 24-Feb-2021 15:52:25 - [ 3] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.173 Line_Spacing 0.112 Coordinate_Frame POS-TARG Pattern_Orient 23.884 Angle_Between_Sides 81.785 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type SPIRAL Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.145 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 46.86 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 16492( 6) - 24-Feb-2021 15:52:25 - [ 4] Visit: 01 (WFC3) 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HM-SGE WFC3/UVI ACCUM UVIS2-C1K F656N FLASH=20 1 17 S (68 PATTERN 2 1 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HM-SGE WFC3/UVI ACCUM UVIS2-C1K F658N FLASH=20 1 15 S (60 PATTERN 2 2 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 3 HM-SGE WFC3/UVI ACCUM UVIS2-C1K F502N FLASH=20 1 20 S (80 PATTERN 2 3 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 4 HM-SGE WFC3/UVI ACCUM UVIS F658N FLASH=18 1 828 S POS TARG 0, -50; PATTERN S see below 1 4 (3755 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 | ------------------------------------------------------------------------------------------------------------------------------------ HM-SGE 1 WFC3/UVI ACCUM UVIS2-C1 F656N 1 none none none 1 N/A S K1C-SUB HM-SGE 1 WFC3/UVI ACCUM UVIS2-C1 F656N 2 none none none 1 N/A S K1C-SUB HM-SGE 1 WFC3/UVI ACCUM UVIS2-C1 F656N 3 none none none 1 N/A S K1C-SUB HM-SGE 1 WFC3/UVI ACCUM UVIS2-C1 F656N 4 none none none 1 N/A S K1C-SUB HM-SGE 2 WFC3/UVI ACCUM UVIS2-C1 F658N 1 none none none 1 N/A S K1C-SUB HM-SGE 2 WFC3/UVI ACCUM UVIS2-C1 F658N 2 none none none 1 N/A S K1C-SUB HM-SGE 2 WFC3/UVI ACCUM UVIS2-C1 F658N 3 none none none 1 N/A S K1C-SUB HM-SGE 2 WFC3/UVI ACCUM UVIS2-C1 F658N 4 none none none 1 N/A S K1C-SUB HM-SGE 3 WFC3/UVI ACCUM UVIS2-C1 F502N 1 none none none 1 N/A S K1C-SUB HM-SGE 3 WFC3/UVI ACCUM UVIS2-C1 F502N 2 none none none 1 N/A S K1C-SUB HM-SGE 3 WFC3/UVI ACCUM UVIS2-C1 F502N 3 none none none 1 N/A S K1C-SUB 16492( 6) - 24-Feb-2021 15:52:25 - [ 5] 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 | ------------------------------------------------------------------------------------------------------------------------------------ HM-SGE 3 WFC3/UVI ACCUM UVIS2-C1 F502N 4 none none none 1 N/A S K1C-SUB HM-SGE 4 WFC3/UVI ACCUM UVIS F658N 1 none none none 1 1275.0 S S HM-SGE 4 WFC3/UVI ACCUM UVIS F658N 2 none none none 2 827.0 S S HM-SGE 4 WFC3/UVI ACCUM UVIS F658N 3 none none none 2 827.0 S S HM-SGE 4 WFC3/UVI ACCUM UVIS F658N 4 none none none 2 826.0 S S 16492( 6) - 24-Feb-2021 15:52:25 - [ 6] Visit: 02 (COS) Visit Requirements: On Hold Comments: Additional Comments: The input spectrum used for all ETC calculations is one constructed from IUE observations obtained on October 20, 1992, SWP46012 and LWP24119. ACQ/IMAGE: The continuum from the central source is expected to be the main contributor to the flux for the NUV acquisition, and therefore a point source is assumed for the calculation. The line emission, however, is likely to be distributed, and we have increased the S/N to 40 to examine the spatial extent of this emitting region. Spectroscopy: We are mainly interested in the line emission from compact, but extended sources. The total flux has been measured by IUE. In the spectroscopy ETC calculations, we are assuming a point source to be conservative for Bright Object Protection. 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 HM-SGE COS/NUV ACQ/IMA PSA MIRRORB 1 5 S (5 S) GE Comments: The input spectrum used for the ETC calculation was constructed from IUE observations obtained on October 20, 1992, SWP46012 and LWP24119. The continuum from the central source is expected to be the main contributor to the flux, and therefore a point source is assumed for the calculation. The line emission, however, is likely to be distributed, and we have increased the S/N to 40 to examine the spatial extent of this emitting region. ------------------------------------------------------------------------------------------------------------------------------------ 2 HM-SGE COS/FUV TIME-TA PSA G140L 800 FP-POS=ALL, BUFFER-TIME=100 1 100 S (400 G S) ------------------------------------------------------------------------------------------------------------------------------------ 3 HM-SGE-N COS/FUV TIME-TA PSA G140L 800 FP-POS=ALL, BUFFER-TIME=169 1 169 S (676 G S) ------------------------------------------------------------------------------------------------------------------------------------ 4 HM-SGE-S COS/FUV TIME-TA PSA G140L 800 FP-POS=ALL, BUFFER-TIME=100 1 100 S (400 G S) ------------------------------------------------------------------------------------------------------------------------------------ 5 HM-SGE COS/NUV TIME-TA PSA G230L 2950 FP-POS=1, BUFFER-TIME=100 1 100 S (100 G S) ------------------------------------------------------------------------------------------------------------------------------------ 6 HM-SGE COS/NUV TIME-TA PSA G230L 2950 FP-POS=2, BUFFER-TIME=100 1 100 S (100 G S) ------------------------------------------------------------------------------------------------------------------------------------ 7 HM-SGE-N COS/NUV TIME-TA PSA G230L 2950 FP-POS=2, BUFFER-TIME=117 1 117 S (117 G S) ------------------------------------------------------------------------------------------------------------------------------------ 16492( 6) - 24-Feb-2021 15:52:25 - [ 7] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 8 HM-SGE-N COS/NUV TIME-TA PSA G230L 2950 FP-POS=3, BUFFER-TIME=116 1 116 S (116 G S) ------------------------------------------------------------------------------------------------------------------------------------ 9 HM-SGE-S COS/NUV TIME-TA PSA G230L 2950 FP-POS=3, BUFFER-TIME=115 1 115 S (115 G S) ------------------------------------------------------------------------------------------------------------------------------------ 10 HM-SGE-S COS/NUV TIME-TA PSA G230L 2950 FP-POS=4, BUFFER-TIME=115 1 115 S (115 G 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 | ------------------------------------------------------------------------------------------------------------------------------------ HM-SGE 1 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A GE HM-SGE 2 COS/FUV TIME-TA PSA G140L 800 none none none 1 1 N/A G HM-SGE 2 COS/FUV TIME-TA PSA G140L 800 none none none 2 1 N/A G HM-SGE 2 COS/FUV TIME-TA PSA G140L 800 none none none 3 1 N/A G HM-SGE 2 COS/FUV TIME-TA PSA G140L 800 none none none 4 1 N/A G HM-SGE-N 3 COS/FUV TIME-TA PSA G140L 800 none none none 1 1 N/A G HM-SGE-N 3 COS/FUV TIME-TA PSA G140L 800 none none none 2 1 N/A G HM-SGE-N 3 COS/FUV TIME-TA PSA G140L 800 none none none 3 1 N/A G HM-SGE-N 3 COS/FUV TIME-TA PSA G140L 800 none none none 4 1 N/A G HM-SGE-S 4 COS/FUV TIME-TA PSA G140L 800 none none none 1 2 N/A G HM-SGE-S 4 COS/FUV TIME-TA PSA G140L 800 none none none 2 2 N/A G HM-SGE-S 4 COS/FUV TIME-TA PSA G140L 800 none none none 3 2 N/A G HM-SGE-S 4 COS/FUV TIME-TA PSA G140L 800 none none none 4 2 N/A G HM-SGE 5 COS/NUV TIME-TA PSA G230L 2950 none none none none 2 N/A G HM-SGE 6 COS/NUV TIME-TA PSA G230L 2950 none none none none 2 N/A G HM-SGE-N 7 COS/NUV TIME-TA PSA G230L 2950 none none none none 2 N/A G 16492( 6) - 24-Feb-2021 15:52:25 - [ 8] 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 | ------------------------------------------------------------------------------------------------------------------------------------ HM-SGE-N 8 COS/NUV TIME-TA PSA G230L 2950 none none none none 2 N/A G HM-SGE-S 9 COS/NUV TIME-TA PSA G230L 2950 none none none none 2 N/A G HM-SGE-S 10 COS/NUV TIME-TA PSA G230L 2950 none none none none 2 N/A G 16492( 6) - 24-Feb-2021 15:52:25 - [ 9] Summary Form for Proposal 16492 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures PSA, UVIS, UVIS2-C1K1C-SUB ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/FUV, COS/NUV, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ/IMAGE, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=100, BUFFER-TIME=115, BUFFER-TIME=116, BUFFER-TIME=117, BUFFER-TIME=169, FLASH=18, FLASH=20, FP-POS=1, FP-POS=2, FP-POS=3, FP-POS=4, FP-POS=ALL ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 1 4, PATTERN 2 1, PATTERN 2 2, PATTERN 2 3, POS TARG 0, -50 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F502N, F656N, F658N, G140L, G230L, MIRRORB ------------------------------------------------------------------------------------------------------------------------------------ Target Names HM-SGE, HM-SGE-N, HM-SGE-S ------------------------------------------------------------------------------------------------------------------------------------