18044( 2) - 04-Aug-2025 12:56:48 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 18044 Version: 2 Check-in Time: 04-Aug-2025 12:56:48 STScI Edit Number: 0 Title UV spectroscopy of extremely metal-poor dwarf compact star-forming galaxies with exceptionally strong HeII 4686 emission ------------------------------------------------------------------------------------ Type Cycle GO 33 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Yuri I. Izotov National Academy of Sciences of Ukraine, Y BITP CoI: Dr. Natalia G. Guseva National Academy of Sciences of Ukraine, N BITP CoI: Prof. Daniel Schaerer University of Geneva, Department of N Astronomy CoI: Dr. Gabor Worseck Unaffiliated N CoI: Prof. Trinh Xuan Thuan The University of Virginia N ------------------------------------------------------------------------------------ Abstract We propose to obtain for the first time the full UV spectra of 6 extremely metal-poor compact star-forming galaxies with the hardest ionizing spectra found at low-redshift. The emission line spectra, covering the range from Lyman-alpha to ~2900 Ang, will allow us to constrain the ionizing radiation field of these galaxies in the Lyman continuum and up to high energies (54 eV and higher) and thus to test different scenarios proposed to explain the hard spectra of these galaxies. The data will also allow abundance studies of Carbon and other elements. Finally, it will provide an important reference sample to study extremely metal-poor galaxies (with 2-10 % solar metallicity) with very hard radiation and also to better understand other objects (e.g. sources hosting intermediate-mass black holes, high-z AGN or other unusual objects). In short, the observations will provide fundamental and unique information on the radiation field, nature of the ionizing sources, and ISM properties of these extreme galaxies. And the observations will have an important impact for our understanding of the most metal-poor and first galaxies in the early Universe. ------------------------------------------------------------------------------------ Observations Description ------------------------ COS/NUV acquisition images of the targets will be obtained with the standard Mirror A and the ACQ/IMAGE mode to reach a S/N>20 inside a 9x9 pixel box centered on the brightest part of the galaxy. This requires on average 120s+2x300s=720s per object. As a bonus, the UV morphology of the selected objects will be studied with these images. Given the redshift of the targets, the complete spectral coverage requires separate COS and STIS observations for each galaxy. The COS/G140L configuration is used to detect emission lines shortward of the C III] 1906, 1908 emission line including Ly-alpha 1216, NV 1240, CIV 1549, NIV] 1486, HeII 1640, OIII] 1661, 1666 lines. Since the C III] 1906, 1908 line falls into the insensitive part of the COS, the STIS/G230L configuration is used to detect this line. As a by-product we expect also to observe MgII 2796, 2803 emission line. GALEX FUV magnitude have been used to calculate the required exposures, to reach S/N > 5 for the continuum near the 18044( 2) - 04-Aug-2025 12:56:48 - [ 2] Ly-alpha line, in the case of a 100-pixel binned spectrum, and S/N= 3 - 5 per STIS G230L pixel in the central ~500A of the spectrum, where the S/N is flat. This S/N will suffice to detect emission lines with equivalent widths above 1-1.5A with sufficient accuracy. To reach this, 1.5-2.5 orbits are needed for the G140L grism, totalling 2-3 orbits per object with acquisition, and 2-3 orbits for STIS depending on source brightness, and including acquisition. A total of 17+17=34 orbits for COS+STIS is therefore requested. ------------------------------------------------------------------------------------ 18044( 2) - 04-Aug-2025 12:56:48 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 J0004+2549 GALAXY, DWARF COMPACT, RA=00H04M0.0600S +/- 0.2", J2000 Z = V = 20.90 +/- 0.02 FUV=22.10, NUV=21.95 STARBURST DEC=+25D49'52.60" +/- 0.2" 0.0589 Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 2 J0833+4926 GALAXY, DWARF COMPACT, RA=08H33M2.0200S +/- 0.2", J2000 Z = V = 20.75 +/- 0.02 FUV=19.27, NUV=19.16 STARBURST DEC=+49D26'18.16" +/- 0.2" 0.0481 Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 3 J1046+4047 GALAXY, DWARF COMPACT, RA=10H46M9.2300S +/- 0.2", J2000 Z = V = 20.18 +/- 0.02 FUV=20.27+/-0.24, STARBURST DEC=+40D47'7.07" +/- 0.2" 0.0487 NUV=21.19+/-0.28 Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 4 J1417+5753 GALAXY, DWARF COMPACT, RA=14H17M40.2300S +/- 0.2", J2000 Z = V = 21.48 +/- 0.02 FUV=22.05, NUV=22.00 STARBURST DEC=+57D53'17.57" +/- 0.2" 0.0660 Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 5 J1444+4840 GALAXY, DWARF COMPACT, RA=14H44M59.0100S +/- 0.2", J2000 Z = V = 20.71 +/- 0.03 FUV=22.01+/-0.41, STARBURST DEC=+48D40'6.83" +/- 0.2" 0.0647 NUV=22.18+/-0.43 Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 6 J1613+3622 GALAXY, DWARF COMPACT, RA=16H13M48.3300S +/- 0.2", J2000 Z = V = 21.52 +/- 0.03 FUV=20.59, NUV=20.74 STARBURST DEC=+36D22'12.57" +/- 0.2" 0.0390 Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 18044( 2) - 04-Aug-2025 12:56:48 - [ 4] Visit: 01 (J0004.1) 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 J0004+2549 COS/NUV ACQ/IMA PSA MIRRORA 1 500 S (500 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 J0004+2549 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=9500, FLASH=YES, 1 1500 S G FP-POS=1, SEGMENT=A see below (1277 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 J0004+2549 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=9500., FLASH=YES, 1 1500 S G FP-POS=ALL, SEGMENT=A see below (4848 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 | ------------------------------------------------------------------------------------------------------------------------------------ J0004+2549 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE J0004+2549 2 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 1277.0 S G J0004+2549 3 COS/FUV TIME-TA PSA G140L 1105 none none none 1 2 1212.0 S G J0004+2549 3 COS/FUV TIME-TA PSA G140L 1105 none none none 2 2 1212.0 S G J0004+2549 3 COS/FUV TIME-TA PSA G140L 1105 none none none 3 3 1212.0 S G J0004+2549 3 COS/FUV TIME-TA PSA G140L 1105 none none none 4 3 1212.0 S G 18044( 2) - 04-Aug-2025 12:56:48 - [ 5] Visit: 02 (J0004.2) 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 J0004+2549 STIS/CCD ACQ F28X50LP MIRROR 1 200 S (200 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 J0004+2549 STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=1300. 1 1500 S -MAMA G see below (1218 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 J0004+2549 STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=1300. 1 2400 S -MAMA G see below (2575 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 J0004+2549 STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=1300. 1 2400 S -MAMA G see below (2552 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 | ------------------------------------------------------------------------------------------------------------------------------------ J0004+2549 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A J0004+2549 2 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 1 1218.0 S -MAMA G J0004+2549 3 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 2 2575.0 S -MAMA G J0004+2549 4 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 3 2552.0 S -MAMA G 18044( 2) - 04-Aug-2025 12:56:48 - [ 6] Visit: 03 (J0833.1) 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 J0833+4926 COS/NUV ACQ/IMA PSA MIRRORA 1 100. S GE (100 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 J0833+4926 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=8800., FLASH=YES, 1 1200. S G FP-POS=ALL, SEGMENT=A see below (4452 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 | ------------------------------------------------------------------------------------------------------------------------------------ J0833+4926 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE J0833+4926 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 900.0 S G J0833+4926 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 1100.0 S G J0833+4926 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 2 1226.0 S G J0833+4926 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 2 1226.0 S G 18044( 2) - 04-Aug-2025 12:56:48 - [ 7] Visit: 04 (J0833.2) 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 J0833+4926 STIS/CCD ACQ F28X50LP MIRROR 1 100. S (100 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 J0833+4926 STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=1300. 1 1400. S -MAMA G see below (1646 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 J0833+4926 STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=1300. 1 2400. S -MAMA G see below (2603 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 | ------------------------------------------------------------------------------------------------------------------------------------ J0833+4926 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A J0833+4926 2 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 1 1646.0 S -MAMA G J0833+4926 3 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 2 2603.0 S -MAMA G 18044( 2) - 04-Aug-2025 12:56:48 - [ 8] Visit: 05 (J1046.1) 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 J1046+4047 COS/NUV ACQ/IMA PSA MIRRORA 1 300. S GE (300 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 J1046+4047 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=8800., FLASH=YES, 1 1200. S G FP-POS=1, SEGMENT=A see below (1695 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 J1046+4047 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=8800., FLASH=YES, 1 1200. S G FP-POS=ALL, SEGMENT=A see below (4884 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 | ------------------------------------------------------------------------------------------------------------------------------------ J1046+4047 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE J1046+4047 2 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 1695.0 S G J1046+4047 3 COS/FUV TIME-TA PSA G140L 1105 none none none 1 2 1221.0 S G J1046+4047 3 COS/FUV TIME-TA PSA G140L 1105 none none none 2 2 1221.0 S G J1046+4047 3 COS/FUV TIME-TA PSA G140L 1105 none none none 3 3 1221.0 S G J1046+4047 3 COS/FUV TIME-TA PSA G140L 1105 none none none 4 3 1221.0 S G 18044( 2) - 04-Aug-2025 12:56:48 - [ 9] Visit: 06 (J1046.2) 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 J1046+4047 STIS/CCD ACQ F28X50LP MIRROR 1 100. S (100 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 J1046+4047 STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=1300. 1 1200. S -MAMA G see below (1636 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 J1046+4047 STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=1300. 1 2400. S -MAMA G see below (2593 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 J1046+4047 STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=1300. 1 2400. S -MAMA G see below (2570 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 | ------------------------------------------------------------------------------------------------------------------------------------ J1046+4047 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A J1046+4047 2 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 1 1636.0 S -MAMA G J1046+4047 3 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 2 2593.0 S -MAMA G J1046+4047 4 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 3 2570.0 S -MAMA G 18044( 2) - 04-Aug-2025 12:56:48 - [ 10] Visit: 07 (J1417.1) 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 J1417+5753 COS/NUV ACQ/IMA PSA MIRRORA 1 500. S GE (500 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 J1417+5753 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=9500., FLASH=YES, 1 1200. S G FP-POS=1, SEGMENT=A see below (1338 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 J1417+5753 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=9500., FLASH=YES, 1 1200. S G FP-POS=ALL, SEGMENT=A see below (4970 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 | ------------------------------------------------------------------------------------------------------------------------------------ J1417+5753 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE J1417+5753 2 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 1338.0 S G J1417+5753 3 COS/FUV TIME-TA PSA G140L 1105 none none none 1 2 1200. S G J1417+5753 3 COS/FUV TIME-TA PSA G140L 1105 none none none 2 2 1285.0 S G J1417+5753 3 COS/FUV TIME-TA PSA G140L 1105 none none none 3 3 1200. S G J1417+5753 3 COS/FUV TIME-TA PSA G140L 1105 none none none 4 3 1285.0 S G 18044( 2) - 04-Aug-2025 12:56:48 - [ 11] Visit: 08 (J1417.2) 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 J1417+5753 STIS/CCD ACQ F28X50LP MIRROR 1 200. S (200 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 J1417+5753 STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=1300. 1 1200. S -MAMA G see below (1279 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 J1417+5753 STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=1300. 1 2400. S -MAMA G see below (2636 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 J1417+5753 STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=1300. 1 2400. S -MAMA G see below (2613 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 | ------------------------------------------------------------------------------------------------------------------------------------ J1417+5753 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A J1417+5753 2 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 1 1279.0 S -MAMA G J1417+5753 3 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 2 2636.0 S -MAMA G J1417+5753 4 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 3 2613.0 S -MAMA G 18044( 2) - 04-Aug-2025 12:56:48 - [ 12] Visit: 09 (J1444.1) 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 J1444+4840 COS/NUV ACQ/IMA PSA MIRRORA 1 500. S GE (500 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 J1444+4840 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=9500., FLASH=YES, 1 1200. S G FP-POS=1, SEGMENT=A see below (1305 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 J1444+4840 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=9500., FLASH=YES, 1 1200. S G FP-POS=ALL, SEGMENT=A see below (4904 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 | ------------------------------------------------------------------------------------------------------------------------------------ J1444+4840 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE J1444+4840 2 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 1305.0 S G J1444+4840 3 COS/FUV TIME-TA PSA G140L 1105 none none none 1 2 1226.0 S G J1444+4840 3 COS/FUV TIME-TA PSA G140L 1105 none none none 2 2 1226.0 S G J1444+4840 3 COS/FUV TIME-TA PSA G140L 1105 none none none 3 3 1226.0 S G J1444+4840 3 COS/FUV TIME-TA PSA G140L 1105 none none none 4 3 1226.0 S G 18044( 2) - 04-Aug-2025 12:56:48 - [ 13] Visit: 10 (J1444.2) 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 J1444+4840 STIS/CCD ACQ F28X50LP MIRROR 1 200. S (200 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 J1444+4840 STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=1300. 1 1200. S -MAMA G see below (1246 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 J1444+4840 STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=1300. 1 2400. S -MAMA G see below (2603 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 J1444+4840 STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=1300. 1 2400. S -MAMA G see below (2580 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 | ------------------------------------------------------------------------------------------------------------------------------------ J1444+4840 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A J1444+4840 2 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 1 1246.0 S -MAMA G J1444+4840 3 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 2 2603.0 S -MAMA G J1444+4840 4 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 3 2580.0 S -MAMA G 18044( 2) - 04-Aug-2025 12:56:48 - [ 14] Visit: 11 (J1613.1) 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 J1613+3622 COS/NUV ACQ/IMA PSA MIRRORA 1 200. S GE (200 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 J1613+3622 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=9400., FLASH=YES, 1 1200. S G FP-POS=1, SEGMENT=A see below (1886 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 J1613+3622 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=9400., FLASH=YES, 1 1200. S G FP-POS=ALL, SEGMENT=A see below (4864 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 | ------------------------------------------------------------------------------------------------------------------------------------ J1613+3622 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE J1613+3622 2 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 1886.0 S G J1613+3622 3 COS/FUV TIME-TA PSA G140L 1105 none none none 1 2 1216.0 S G J1613+3622 3 COS/FUV TIME-TA PSA G140L 1105 none none none 2 2 1216.0 S G J1613+3622 3 COS/FUV TIME-TA PSA G140L 1105 none none none 3 3 1216.0 S G J1613+3622 3 COS/FUV TIME-TA PSA G140L 1105 none none none 4 3 1216.0 S G 18044( 2) - 04-Aug-2025 12:56:48 - [ 15] Visit: 12 (J1613.2) 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 J1613+3622 STIS/CCD ACQ F28X50LP MIRROR 1 200. S (200 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 J1613+3622 STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=1300. 1 1200. S -MAMA G see below (1227 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 J1613+3622 STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=1300. 1 2400. S -MAMA G see below (2584 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 J1613+3622 STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=1300. 1 2400. S -MAMA G see below (2561 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 | ------------------------------------------------------------------------------------------------------------------------------------ J1613+3622 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A J1613+3622 2 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 1 1227.0 S -MAMA G J1613+3622 3 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 2 2584.0 S -MAMA G J1613+3622 4 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 3 2561.0 S -MAMA G 18044( 2) - 04-Aug-2025 12:56:48 - [ 16] Summary Form for Proposal 18044 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 52X0.5, F28X50LP, PSA ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/FUV, COS/NUV, STIS/CCD, STIS/NUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ, ACQ/IMAGE, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=1300., BUFFER-TIME=8800., BUFFER-TIME=9400., BUFFER-TIME=9500, BUFFER-TIME=9500., FLASH=YES, FP-POS=1, FP-POS=ALL, SEGMENT=A ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G140L, G230L, MIRROR, MIRRORA ------------------------------------------------------------------------------------------------------------------------------------ Target Names J0004+2549, J0833+4926, J1046+4047, J1417+5753, J1444+4840, J1613+3622 ------------------------------------------------------------------------------------------------------------------------------------