15818( 3) - 05-Nov-2019 15:34:07 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 15818 Version: 3 Check-in Time: 05-Nov-2019 15:34:07 STScI Edit Number: 0 Title The Center of Expansion and Age of Supernova Remnant N132D ------------------------------------------------------------------------------------ Type Cycle GO 27 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Dan Milisavljevic Purdue University Y CoI: Mr. Charles Law Harvard University N CoI: Dr. Paul P. Plucinsky Smithsonian Institution Astrophysical N Observatory CoI: Dr. Daniel J. Patnaude Smithsonian Institution Astrophysical N Observatory CoI: Mr. John Banovetz Purdue University N CoI: Dr. Niharika Sravan Purdue University N ------------------------------------------------------------------------------------ Abstract Supernovae are among the most powerful and influential explosions in the universe. They are also ideal multi-messenger laboratories to study extreme astrophysics. However, many fundamental properties of supernovae related to their diverse progenitor systems and explosion mechanisms remain poorly constrained, particularly with regard to why and how asymmetry is introduced during core collapse. Young, nearby supernova remnants offer valuable opportunities to investigate these issues in finely resolved detail. A critical parameter in characterizing the explosion dynamics of a supernova remnant is an accurate measurement of its center of expansion and an estimate of its explosion age via proper motion of its fast ejecta. In many cases HST has been uniquely capable in providing the observations required to constrain these parameters for, e.g., Cassiopeia A and 1E 0102.2-7219. Here we request three orbits of HST time to investigate the young, oxygen-rich supernova remnant N132D in a similar manner. These observations will fulfill the need for a comprehensive measurement of proper motion of its ejecta around the entire remnant. They will also complement an approved Chandra Legacy 900 ks observation and a recently developed high resolution 3D reconstruction of the remnant. ------------------------------------------------------------------------------------ Observations Description ------------------------ This program will obtain new ACS Wide Field Camera images of the supernova remnant N132D in the LMC using the F475W and F502N filters. We require deep exposures sensitive to faint emission from the [O III] 4959, 5007 lines. Our data will be compared to archival images obtained in programs 12001 (ACS/WCS/F475W) and 5365 (WFPC2/PC/F502N) to measure proper motion in the ejecta. The remnant is 2.5 arcminutes in diameter so we must center it between the chip gaps. We have placed constraints on roll angle to minimize geometric distortion across the images across epochs. 15818( 3) - 05-Nov-2019 15:34:07 - [ 2] This program also obtains new WFC3/IR/F164N images. No prior images exist in this filter. We are looking to map [Si I] and [Fe II] emission around 1.64 microns. Our observing strategy is optimally configured to detect faint, diffuse emission in one orbit. ------------------------------------------------------------------------------------ 15818( 3) - 05-Nov-2019 15:34:07 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 SNR-J052501- EXT-MEDIUM, SNR RA=05H25M2.3531S, J2000 V = 21 693842 DEC=-69D38'27.40" Reference Frame: Other: SIMBAD 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) 2015.5 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 15818( 3) - 05-Nov-2019 15:34:07 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type ACS-WFC-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 6.5 Line_Spacing 6.5 Coordinate_Frame POS-TARG Pattern_Orient 18.39 Angle_Between_Sides 68.14 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 0.636 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 41.788 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 15818( 3) - 05-Nov-2019 15:34:07 - [ 5] Visit: 01 Visit Requirements: ORIENT 25D TO 65 D; ORIENT 205D TO 245 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 SNR-J052501 ACS/WFC ACCUM WFCENTER F475W 1 580 S PATTERN 1 1-2 -693842 (2320 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SNR-J052501 ACS/WFC ACCUM WFCENTER F502N FLASH=15 1 620 S -693842 see below (2480 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 SNR-J052501 WFC3/IR MULTIAC IR-FIX F164N SAMP-SEQ=SPARS200, NSAMP=8 1 DEF PATTERN 2 3 -693842 CUM (2805.866 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 | ------------------------------------------------------------------------------------------------------------------------------------ SNR-J052501-693842 1 ACS/WFC ACCUM WFCENTER F475W 1 none none none 1 N/A SNR-J052501-693842 1 ACS/WFC ACCUM WFCENTER F475W 2 none none none 1 N/A SNR-J052501-693842 1 ACS/WFC ACCUM WFCENTER F475W 3 none none none 2 N/A SNR-J052501-693842 1 ACS/WFC ACCUM WFCENTER F475W 4 none none none 2 N/A SNR-J052501-693842 2 ACS/WFC ACCUM WFCENTER F502N 1 none none none 1 620.0 S SNR-J052501-693842 2 ACS/WFC ACCUM WFCENTER F502N 2 none none none 1 620.0 S SNR-J052501-693842 2 ACS/WFC ACCUM WFCENTER F502N 3 none none none 2 620.0 S SNR-J052501-693842 2 ACS/WFC ACCUM WFCENTER F502N 4 none none none 2 620.0 S SNR-J052501-693842 3 WFC3/IR MULTIAC IR-FIX F164N 1 none none none 3 N/A CUM SNR-J052501-693842 3 WFC3/IR MULTIAC IR-FIX F164N 2 none none none 3 N/A CUM 15818( 3) - 05-Nov-2019 15:34:07 - [ 6] Summary Form for Proposal 15818 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR-FIX, WFCENTER ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC, WFC3/IR ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=15, NSAMP=8, SAMP-SEQ=SPARS200 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 205D TO 245 D, ORIENT 25D TO 65 D, PATTERN 1 1-2, PATTERN 2 3 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F164N, F475W, F502N ------------------------------------------------------------------------------------------------------------------------------------ Target Names SNR-J052501-693842 ------------------------------------------------------------------------------------------------------------------------------------