17241( 2) - 30-Sep-2022 21:12:27 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17241 Version: 2 Check-in Time: 30-Sep-2022 21:12:27 STScI Edit Number: 0 Title Examining the Variability of High-Redshift Jets ------------------------------------------------------------------------------------ Type Cycle GO 30 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Eileen T Meyer University of Maryland Baltimore County Y CoI: Dr. Markos Georganopoulos University of Maryland Baltimore County N CoI: Mr. Karthik Reddy Solipuram University of Maryland Baltimore County N CoI: Prof. Eric S. Perlman Florida Institute of Technology N ------------------------------------------------------------------------------------ Abstract Recent work has shown that kpc-scale X-ray jets are variable on timescales of weeks to a few years. Variability places very strong constraints on the characteristics of the emitting region, and rules out inverse-Compton upscattered CMB as the origin for the unidentified hard X-ray component. However, very few X-ray jets at redshifts z>2 have the multiple Chandra observations required to test for variability. Here we propose moderate-depth snapshots (20 ks each) of 14 X-ray jets previously detected by Chandra with redshifts ranging from 2-5. This will enable both variability studies and better spectral constraints to understand the nature of extragalactic X-ray jets at high redshift. ------------------------------------------------------------------------------------ Observations Description ------------------------ This is a joint request from a primary Chandra X-ray GO Program, targeting arcsecond-scale X-ray jets from super-massive black holes. This program provides Hubble near-IR observations of 4 of our targets (1 orbit each) which have never previously been observed by HST. This will bring our high-redshift sample of 13 to complete optical/IR coverage as all other targets have previously been observed by HST. A detection or upper limit in the optical will allow us to actually evaluate the full SED of these sources and verify the number of spectral components. A single orbit will yield a deep enough upper limit (0.1 uJy at 160 nm at 3 sigma) to clearly indicate that the X-rays and radio are not from the same emission component, and a detection will similarly allow us to evaluate the spectral components. HST resolution is needed in order to accurately measure the radio-optical spectrum for each knot individually (good radio maps of all our sources already exist). We request a single orbit with WFC3 in the F160W filter. H band is ideally situated very near to the typical peak of the radio-optical synchrotron spectrum when optical emission is detected. ------------------------------------------------------------------------------------ 17241( 2) - 30-Sep-2022 21:12:27 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 QSO-B0727+40 GALAXY, JET, QUASAR, RA=07H30M51.3466S, J2000 V = 18.47 9 RADIO GALAXY DEC=+40D49'50.83" 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) 2015.5 3.7886604418026643E-6 -1.1000020094797947E-5 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 2 7C-1754+6737 GALAXY, JET, QUASAR, RA=17H54M19.5000S, J2000 V = 14 RADIO GALAXY DEC=+67D37'34.00" 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) 2015.5 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 3 6C-123945+37 GALAXY, JET, QUASAR, RA=12H42M9.8124S, J2000 V = 19.82 3654 RADIO GALAXY DEC=+37D20'5.69" 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) 2015.5 8.887725577125947E-6 -1.0400005976407556E-4 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 4 QSO-B1713+21 GALAXY, JET, QUASAR, RA=17H15M21.2530S, J2000 V = 21.0 8 RADIO GALAXY DEC=+21D45'31.84" 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 ------------------------------------------------------------------------------------------------------------------------------------ 17241( 2) - 30-Sep-2022 21:12:27 - [ 3] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-BLOB Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 5.183 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 41.859 Angle_Between_Sides Center_Pattern YES ------------------------------------------------------------------------------------------------------------------------------------ 17241( 2) - 30-Sep-2022 21:12:27 - [ 4] Visit: 01 (B0727+409) Visit Requirements: On Hold Comments: Additional Comments: The science target, the X-ray emitting jet, extends out approximately 40" so a sub-array cannot be used to limit persistence. The selected exposure times are a compromise between saturating targets in the FOV and efficiency as shorter times would result in significant reduction in total time. There is a H-mag 14.5 source about 6" from the center of the target. 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 QSO-B0727+4 WFC3/IR MULTIAC IR F160W SAMP-SEQ=SPARS25, NSAMP=12 1 DEF PATTERN 1 1 09 CUM (1111.752 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 QSO-B0727+4 WFC3/IR MULTIAC IR F160W SAMP-SEQ=SPARS25, NSAMP=12 1 DEF PATTERN 1 2 09 CUM (1111.752 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 | ------------------------------------------------------------------------------------------------------------------------------------ QSO-B0727+409 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM QSO-B0727+409 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM QSO-B0727+409 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM QSO-B0727+409 1 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM QSO-B0727+409 2 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM QSO-B0727+409 2 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM QSO-B0727+409 2 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM QSO-B0727+409 2 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM 17241( 2) - 30-Sep-2022 21:12:27 - [ 5] Visit: 02 (J1754+6737) 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 7C-1754+673 WFC3/IR MULTIAC IR F160W SAMP-SEQ=SPARS25, NSAMP=12 1 DEF PATTERN 1 1 7 CUM (1111.752 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 7C-1754+673 WFC3/IR MULTIAC IR F160W SAMP-SEQ=SPARS25, NSAMP=12 1 DEF PATTERN 1 2 7 CUM (1111.752 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 7C-1754+673 WFC3/IR MULTIAC IR F160W SAMP-SEQ=SPARS25, NSAMP=12 1 DEF POS TARG 7, 7 7 CUM (277.938 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 | ------------------------------------------------------------------------------------------------------------------------------------ 7C-1754+6737 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM 7C-1754+6737 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM 7C-1754+6737 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM 7C-1754+6737 1 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM 7C-1754+6737 2 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM 7C-1754+6737 2 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM 7C-1754+6737 2 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM 7C-1754+6737 2 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM 7C-1754+6737 3 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM 17241( 2) - 30-Sep-2022 21:12:27 - [ 6] Visit: 03 (J1239+3736) 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 6C-123945+3 WFC3/IR MULTIAC IR F160W SAMP-SEQ=SPARS25, NSAMP=12 1 DEF PATTERN 1 1 73654 CUM (1111.752 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 6C-123945+3 WFC3/IR MULTIAC IR F160W SAMP-SEQ=SPARS25, NSAMP=12 1 DEF PATTERN 1 2 73654 CUM (1111.752 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 | ------------------------------------------------------------------------------------------------------------------------------------ 6C-123945+373654 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM 6C-123945+373654 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM 6C-123945+373654 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM 6C-123945+373654 1 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM 6C-123945+373654 2 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM 6C-123945+373654 2 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM 6C-123945+373654 2 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM 6C-123945+373654 2 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM 17241( 2) - 30-Sep-2022 21:12:27 - [ 7] Visit: 04 (B1713+218) 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 QSO-B1713+2 WFC3/IR MULTIAC IR F160W SAMP-SEQ=SPARS25, NSAMP=12 1 DEF PATTERN 1 1 18 CUM (1111.752 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 QSO-B1713+2 WFC3/IR MULTIAC IR F160W SAMP-SEQ=SPARS25, NSAMP=12 1 DEF PATTERN 1 2 18 CUM (1111.752 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 | ------------------------------------------------------------------------------------------------------------------------------------ QSO-B1713+218 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM QSO-B1713+218 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM QSO-B1713+218 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM QSO-B1713+218 1 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM QSO-B1713+218 2 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM QSO-B1713+218 2 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM QSO-B1713+218 2 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM QSO-B1713+218 2 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM 17241( 2) - 30-Sep-2022 21:12:27 - [ 8] Summary Form for Proposal 17241 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR ------------------------------------------------------------------------------------------------------------------------------------ Opmodes MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=12, SAMP-SEQ=SPARS25 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 1 1, PATTERN 1 2, POS TARG 7, 7 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F160W ------------------------------------------------------------------------------------------------------------------------------------ Target Names 6C-123945+373654, 7C-1754+6737, QSO-B0727+409, QSO-B1713+218 ------------------------------------------------------------------------------------------------------------------------------------