15353( 2) - 18-Jul-2017 10:53:08 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 15353 Version: 2 Check-in Time: 18-Jul-2017 10:53:08 STScI Edit Number: 0 Title Luminous Herbig-Haro objects from a massive protostar: The unique case of HH 80/81 ------------------------------------------------------------------------------------ Type Cycle GO 25 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Bo Reipurth University of Hawaii Y CoI: Prof. John Bally University of Colorado at Boulder N CoI: Dr. Alejandro Raga Universidad Nacional Autonoma de Mexico N (UNAM) ------------------------------------------------------------------------------------ Abstract Herbig-Haro (HH) objects are the optical manifestations of shock waves excited by outflows from young stars. They represent one of the few classes of spatially extended astronomical objects where both structural changes and proper motions can be measured on time scales of years to decades. HH 80/81 is a pair of HH objects in Sagittarius which are the intrinsically most luminous HH objects known. The driving source of HH 80/81 is the embedded star IRAS 18162-2048, which has a luminosity of 20, 000 Lsun and excites a compact HII region, suggesting that it is a newborn massive star. HH objects associated with massive young stars are very rare, only a handful of cases are known, but what makes the HH 80/81 source unique among massive protostars is that it produces a finely collimated bipolar radio jet with extremely high velocity and pointing straight to HH 80/81. We propose to observe the HH~80/81 complex with WFC3 and the following four filters: Halpha 6563, Hbeta 4861, [SII] 6717/31, and [OIII] 5007. First epoch HST images were obtained 22 years ago, which now allows a very precise determination of proper motions. Groundbased optical and radio proper motions are not only uncertain, but actually contradict each other, a controversy that will be resolved by HST. The fine resolution of WFC3 allows a study of both fine structural details and structural changes of the shocks. Finally we will use a sophisticated adaptive grid code to interpret the (de-reddened) line ratios across the shocks. ------------------------------------------------------------------------------------ Observations Description ------------------------ Obtain images of HH 80/81 in 4 narrow-band filters, WFC3/UVIS F656N (H-alpha), F487N (H-beta), F673N ([SII]), and F502N ([OIII]. The one orbit of F656N imaging will consist of two exposures taken with a slight dither to fill-in the chip gaps and facilitate cosmic ray and hot pixel removal. Two F487N images will be acquired during each of 2 orbits. The 4 images will be dithered with a small offset pattern to fill-in the gap between the CCDs A pattern of six images in three orbits each will be acquired in both the F673N and F502N filters. ------------------------------------------------------------------------------------ 15353( 2) - 18-Jul-2017 10:53:08 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 HH-80 ISM, HERBIG-HARO OBJECT RA=18H19M6.3460S, J2000 V = 16 DEC=-20D51'27.90" Reference Frame: Other: SIMBAD Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 15353( 2) - 18-Jul-2017 10:53:08 - [ 3] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-GAP-LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 2.414 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 85.759 Angle_Between_Sides Center_Pattern YES ------------------------------------------------------------------------------------------------------------------------------------ 15353( 2) - 18-Jul-2017 10:53:08 - [ 4] Visit: 01 (Visit 01 HH80 H-alpha) Visit Requirements: ORIENT 110D TO 110 D On Hold Comments: Additional Comments: 1 orbit of F656N imaging 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 HH-80 WFC3/UVI ACCUM UVIS-CENT F656N FLASH=12 1 1370 S PATTERN 1 1 S ER see below (2740 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 | ------------------------------------------------------------------------------------------------------------------------------------ HH-80 1 WFC3/UVI ACCUM UVIS-CEN F656N 1 none none none 1 1361.0 S S TER HH-80 1 WFC3/UVI ACCUM UVIS-CEN F656N 2 none none none 1 1379.0 S S TER 15353( 2) - 18-Jul-2017 10:53:08 - [ 5] Visit: 02 (Visit 02 HH80 H-beta) Visit Requirements: ORIENT 110D TO 110 D On Hold Comments: Additional Comments: 2 orbits of F487N imaging 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 HH-80 WFC3/UVI ACCUM UVIS-CENT F487N FLASH=10 2 1350 S PATTERN 1 1 S ER see below (5590 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 | ------------------------------------------------------------------------------------------------------------------------------------ HH-80 1 WFC3/UVI ACCUM UVIS-CEN F487N 1 none 1 none 1 1371.0 S S TER HH-80 1 WFC3/UVI ACCUM UVIS-CEN F487N 1 none 2 none 1 1371.0 S S TER HH-80 1 WFC3/UVI ACCUM UVIS-CEN F487N 2 none 1 none 2 1424.0 S S TER HH-80 1 WFC3/UVI ACCUM UVIS-CEN F487N 2 none 2 none 2 1424.0 S S TER 15353( 2) - 18-Jul-2017 10:53:08 - [ 6] Visit: 03 (Visit 03 HH80 SII) Visit Requirements: ORIENT 110D TO 110 D On Hold Comments: Additional Comments: First 2 orbits of th 3 orbits of F673N imaging with WFC3 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 HH-80 WFC3/UVI ACCUM UVIS-CENT F673N FLASH=10 2 1350 S PATTERN 1 1 S ER see below (5590 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 | ------------------------------------------------------------------------------------------------------------------------------------ HH-80 1 WFC3/UVI ACCUM UVIS-CEN F673N 1 none 1 none 1 1371.0 S S TER HH-80 1 WFC3/UVI ACCUM UVIS-CEN F673N 1 none 2 none 1 1371.0 S S TER HH-80 1 WFC3/UVI ACCUM UVIS-CEN F673N 2 none 1 none 2 1424.0 S S TER HH-80 1 WFC3/UVI ACCUM UVIS-CEN F673N 2 none 2 none 2 1424.0 S S TER 15353( 2) - 18-Jul-2017 10:53:08 - [ 7] Visit: 04 (Visit 04 HH80 SII) Visit Requirements: ORIENT 110D TO 110 D On Hold Comments: Additional Comments: 1 orbits of F673N imaging with WFC3 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 HH-80 WFC3/UVI ACCUM UVIS-CENT F673N FLASH=10 1 1370 S PATTERN 1 1 S ER see below (2742 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 | ------------------------------------------------------------------------------------------------------------------------------------ HH-80 1 WFC3/UVI ACCUM UVIS-CEN F673N 1 none none none 1 1371.0 S S TER HH-80 1 WFC3/UVI ACCUM UVIS-CEN F673N 2 none none none 1 1371.0 S S TER 15353( 2) - 18-Jul-2017 10:53:08 - [ 8] Visit: 05 (Visit 05 HH80 OIII) Visit Requirements: ORIENT 110D TO 110 D On Hold Comments: Additional Comments: First 2 orbits of F502N imaging with WFC3 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 HH-80 WFC3/UVI ACCUM UVIS-CENT F502N FLASH=10 2 1350 S PATTERN 1 1 S ER see below (5590 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 | ------------------------------------------------------------------------------------------------------------------------------------ HH-80 1 WFC3/UVI ACCUM UVIS-CEN F502N 1 none 1 none 1 1371.0 S S TER HH-80 1 WFC3/UVI ACCUM UVIS-CEN F502N 1 none 2 none 1 1371.0 S S TER HH-80 1 WFC3/UVI ACCUM UVIS-CEN F502N 2 none 1 none 2 1424.0 S S TER HH-80 1 WFC3/UVI ACCUM UVIS-CEN F502N 2 none 2 none 2 1424.0 S S TER 15353( 2) - 18-Jul-2017 10:53:08 - [ 9] Visit: 06 (Visit 06 HH80 OIII) Visit Requirements: ORIENT 110D TO 110 D On Hold Comments: Additional Comments: 1 orbit of F502N imaging with WFC3 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 HH-80 WFC3/UVI ACCUM UVIS-CENT F502N FLASH=10 1 1370 S PATTERN 1 1 S ER see below (2742 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 | ------------------------------------------------------------------------------------------------------------------------------------ HH-80 1 WFC3/UVI ACCUM UVIS-CEN F502N 1 none none none 1 1371.0 S S TER HH-80 1 WFC3/UVI ACCUM UVIS-CEN F502N 2 none none none 1 1371.0 S S TER 15353( 2) - 18-Jul-2017 10:53:08 - [ 10] Summary Form for Proposal 15353 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS-CENTER ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=10, FLASH=12 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 110D TO 110 D, PATTERN 1 1 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F487N, F502N, F656N, F673N ------------------------------------------------------------------------------------------------------------------------------------ Target Names HH-80 ------------------------------------------------------------------------------------------------------------------------------------