18188( 3) - 05-Nov-2025 13:54:05 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 18188 Version: 3 Check-in Time: 05-Nov-2025 13:54:05 STScI Edit Number: 0 Title Completing the Hyades High-Energy Main Sequence ------------------------------------------------------------------------------------ Type Cycle GO 33 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Thomas R. Ayres University of Colorado at Boulder Y ------------------------------------------------------------------------------------ Abstract The nearby Hyades cluster (d=47 pc) is a gold standard for the Solar-Stellar Connection: it presents an accessible, well-populated Main Sequence of Sunlike stars of the same age (~600 Myr) and chemical composition; ideal subjects to test the origins and consequences of high-energy (X-rays and ultraviolet) magnetic activity. An existing joint Chandra/HST project has covered the cooler part of the Hyades MS, G9V-K7V. The present proposal is to complete the MS coverage with new HRC-I and COS pointings on the warmer side, F7-G6. Chandra X-rays and HST FUV emission lines provide complementary views of the multi-MK coronal activity, to help constrain theories of exoplanet atmospheric escape as well as the dynamo generation of stellar magnetic fields. ------------------------------------------------------------------------------------ Observations Description ------------------------ The objective of the observing program is to obtain full-coverage FUV spectra of 12 sunlike stars in the nearby Hyades open cluster (d~47 pc). The stars in the cluster are young (~600 Myr), rotating more rapidly than the 4.5 Gyr Sun, and are expected to display hot outer atmospheres (10, 000 K - 10 MK) symptomatic of strong magnetic dynamo activity. The resulting FUV spectra will be dominated by strong emission lines, such as C II 133 nm (30, 000 K), Si III 120 nm (50, 000 K), Si IV 139 nm (80, 000 K), C IV 154 nm (100, 000 K), and N V 123 nm (200, 000 K). FUV line intensitites of the Hyades targets can be estimated from HST/STIS spectra of young field stars of the solar neighborhood, such as Chi1 Orionis (G0V), and are expected to be too faint for the STIS echelle modes, and marginal for the COS G modes, at least in the 1-orbit pointings desirable for a survey program (in support of a Chandra survey of the coronal X-ray emissions of the stars). This leaves the more sensitive L modes of both STIS and COS as options to obtain high-quality FUV tracings (integrated line intensities with S/N close to, or exceeding, 20:1). The COS G140L-1105 setting is preferred over STIS G140L-1425, because the COS version has significantly higher spectral resolution, important for separating close spectral blends. The targets are captured using a COS NUV imaging ACQ, which requires the Bright Object Aperture and Mirror-A or B depending on the target brightness. The COS ETC-predicted ACQ exposure times, based on the target V magnitude and appropriate Castelli-Kurucz model SEDs, range from a few seconds to about 40 s. The subsequent G140L-1105 exposure is in Time-Tag mode, on Segment A, utilizing the four default FP-POS splits, to fill out the single orbit. The per-split 18188( 3) - 05-Nov-2025 13:54:05 - [ 2] exposure times vary from 462-485 s, for a total of about 1.9 ks. The S/N estimates in the COS spectroscopic ETC were obtained using a distance-scaled STIS FUV+NUV spectrum of the Hyades-age G0V star Chi1 Ori, mentioned earlier. There were no safety issues identified by the ETC. (The bright Lyman-alpha line predicted from the reference star Chi1 Ori was not flagged by the ETC, and the actual hydrogen intensity for the Hyades stars would be further reduced by the additional ISM absorption between 9 pc Chi1 Ori and the 47 pc cluster members.) ------------------------------------------------------------------------------------ 18188( 3) - 05-Nov-2025 13:54:05 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 HD-25825 STAR, G V-IV RA=04H06M16.1277S +/- 0.1", J2000 V = V = 7.811 +/- 0.1 DEC=+15D41'53.23" +/- 0.1" +37.5 Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.008238282777886937 -0.019715 0.021175 ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-26736 STAR, G V-IV RA=04H14M32.3145S +/- 0.1", J2000 V = V = 8.047 +/- 0.1 DEC=+23D34'29.80" +/- 0.1" +37.63 Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.00871424405084951 -0.048183 0.021994 ------------------------------------------------------------------------------------------------------------------------------------ 3 HD-26767 STAR, G V-IV RA=04H14M27.2546S +/- 0.1", J2000 V = V = 8.030 +/- 0.1 DEC=+12D26'7.13" +/- 0.1" +38.32 Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.00783248546242037 -0.013099 0.0210557 ------------------------------------------------------------------------------------------------------------------------------------ 4 HD-27250 STAR, G V-IV RA=04H18M57.9746S +/- 0.1", J2000 V = V = 8.597 +/- 0.1 DEC=+19D54'24.12" +/- 0.1" +38.72 Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.008001503282900141 -0.036537999999999994 0.0214467 ------------------------------------------------------------------------------------------------------------------------------------ 5 HD-27282 STAR, G V-IV RA=04H19M8.0079S +/- 0.1", J2000 V = V = 8.427 +/- 0.1 DEC=+17D31'29.12" +/- 0.1" +38.09 Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.007908735296269048 -0.027852000000000002 0.0213907 ------------------------------------------------------------------------------------------------------------------------------------ 6 HD-27406 STAR, F3-F9 RA=04H20M12.9666S +/- 0.1", J2000 V = V = 7.444 +/- 0.1 DEC=+19D14'0.52" +/- 0.1" +38.40 Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.008090654191407495 -0.035171999999999995 0.022020 ------------------------------------------------------------------------------------------------------------------------------------ 7 HD-28205 STAR, F3-F9 RA=04H27M35.8912S +/- 0.1", J2000 V = V = 7.404 +/- 0.1 DEC=+15D35'21.09" +/- 0.1" +39.24 Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.007278900204602716 -0.023914 0.021284 ------------------------------------------------------------------------------------------------------------------------------------ 18188( 3) - 05-Nov-2025 13:54:05 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 8 HD-28237 STAR, F3-F9 RA=04H27M46.0746S +/- 0.1", J2000 V = V = 7.482 +/- 0.1 DEC=+11D44'11.11" +/- 0.1" +39.63 Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.007493460432541057 -0.012423 0.0221517 ------------------------------------------------------------------------------------------------------------------------------------ 9 HD-28593 STAR, G V-IV RA=04H31M15.6941S +/- 0.1", J2000 V = V = 8.572 +/- 0.1 DEC=+20D07'59.41" +/- 0.1" +39.83 Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.007564422971570414 -0.039295000000000004 0.0217095 ------------------------------------------------------------------------------------------------------------------------------------ 10 HD-28992 STAR, G V-IV RA=04H34M35.3101S +/- 0.1", J2000 V = V = 7.898 +/- 0.1 DEC=+15D30'16.64" +/- 0.1" +40.43 Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.006985060773585737 -0.026814 0.021669 ------------------------------------------------------------------------------------------------------------------------------------ 11 HD-29419 STAR, G V-IV RA=04H38M51.2920S +/- 0.1", J2000 V = V = 7.501 +/- 0.1 DEC=+23D08'59.90" +/- 0.1" +39.14 Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.007658467799701498 -0.054238999999999996 0.0230344 ------------------------------------------------------------------------------------------------------------------------------------ 12 HD-30589 STAR, F3-F9 RA=04H49M32.1249S +/- 0.1", J2000 V = V = 7.739 +/- 0.1 DEC=+15D53'19.47" +/- 0.1" +41.52 Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.006012507096520023 -0.025515999999999997 0.0206244 ------------------------------------------------------------------------------------------------------------------------------------ 18188( 3) - 05-Nov-2025 13:54:05 - [ 5] Visit: 01 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 HD-25825 COS/NUV ACQ/IMA BOA MIRRORA 1 4 S (4 S) GE Comments: Spectrum: Castelli-Kurucz Models G0V 6000 4.5 Extinction E(B-V): None Normalization: Renormalized to vegamag = 7.811 in filter Johnson/V ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-25825 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=8300, FP-POS=ALL, 1 485 S G SEGMENT=A (1940 S) Comments: User uploaded spectrum: CHI1ORI-to-Hyads.txt-- Hyades age G0 dwarf Chi1 Orionis STIS FUV+NUV echelle spectra scaled to average 46 pc distance of Hyades targets. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD-25825 1 COS/NUV ACQ/IMA BOA MIRRORA none none none none 1 N/A GE HD-25825 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G HD-25825 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G HD-25825 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G HD-25825 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18188( 3) - 05-Nov-2025 13:54:05 - [ 6] Visit: 02 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 HD-26736 COS/NUV ACQ/IMA BOA MIRRORA 1 5.5 S (5.5 GE S) Comments: Spectrum: Castelli-Kurucz Models G2V 5750 4.5 Extinction E(B-V): None Normalization: Renormalized to vegamag = 8.047 in filter Johnson/V ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-26736 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=8300, FP-POS=ALL, 1 485 S G SEGMENT=A (1940 S) Comments: User uploaded spectrum: CHI1ORI-to-Hyads.txt-- Hyades age G0 dwarf Chi1 Orionis STIS FUV+NUV echelle spectra scaled to average 46 pc distance of Hyades targets. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD-26736 1 COS/NUV ACQ/IMA BOA MIRRORA none none none none 1 N/A GE HD-26736 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G HD-26736 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G HD-26736 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G HD-26736 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18188( 3) - 05-Nov-2025 13:54:05 - [ 7] Visit: 03 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 HD-26767 COS/NUV ACQ/IMA BOA MIRRORA 1 5 S (5 S) GE Comments: Spectrum: Castelli-Kurucz Models G2V 5750 4.5 Extinction E(B-V): None Normalization: Renormalized to vegamag = 8.03 in filter Johnson/V ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-26767 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=8300, FP-POS=ALL, 1 484 S G SEGMENT=A (1936 S) Comments: User uploaded spectrum: CHI1ORI-to-Hyads.txt-- Hyades age G0 dwarf Chi1 Orionis STIS FUV+NUV echelle spectra scaled to average 46 pc distance of Hyades targets. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD-26767 1 COS/NUV ACQ/IMA BOA MIRRORA none none none none 1 N/A GE HD-26767 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G HD-26767 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G HD-26767 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G HD-26767 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18188( 3) - 05-Nov-2025 13:54:05 - [ 8] Visit: 04 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 HD-27250 COS/NUV ACQ/IMA BOA MIRRORA 1 12 S (12 GE S) Comments: Spectrum: Castelli-Kurucz Models G8V 5500 4.5 Extinction E(B-V): None Normalization: Renormalized to vegamag = 8.597 in filter Johnson/V ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-27250 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=8300, FP-POS=ALL, 1 481 S G SEGMENT=A (1924 S) Comments: User uploaded spectrum: CHI1ORI-to-Hyads.txt-- Hyades age G0 dwarf Chi1 Orionis STIS FUV+NUV echelle spectra scaled to average 46 pc distance of Hyades targets. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD-27250 1 COS/NUV ACQ/IMA BOA MIRRORA none none none none 1 N/A GE HD-27250 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G HD-27250 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G HD-27250 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G HD-27250 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18188( 3) - 05-Nov-2025 13:54:05 - [ 9] Visit: 05 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 HD-27282 COS/NUV ACQ/IMA BOA MIRRORA 1 10 S (10 GE S) Comments: Spectrum: Castelli-Kurucz Models G8V 5500 4.5 Extinction E(B-V): None Normalization: Renormalized to vegamag = 8.427 in filter Johnson/V ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-27282 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=8300, FP-POS=ALL, 1 482 S G SEGMENT=A (1928 S) Comments: User uploaded spectrum: CHI1ORI-to-Hyads.txt-- Hyades age G0 dwarf Chi1 Orionis STIS FUV+NUV echelle spectra scaled to average 46 pc distance of Hyades targets. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD-27282 1 COS/NUV ACQ/IMA BOA MIRRORA none none none none 1 N/A GE HD-27282 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G HD-27282 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G HD-27282 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G HD-27282 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18188( 3) - 05-Nov-2025 13:54:05 - [ 10] Visit: 06 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 HD-27406 COS/NUV ACQ/IMA BOA MIRRORB 1 38 S (38 GE S) Comments: Spectrum: Castelli-Kurucz Models F8V 6250 4.0 Extinction E(B-V): None Normalization: Renormalized to vegamag = 7.444 in filter Johnson/V ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-27406 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=8300, FP-POS=ALL, 1 468 S G SEGMENT=A (1872 S) Comments: User uploaded spectrum: CHI1ORI-to-Hyads.txt-- Hyades age G0 dwarf Chi1 Orionis STIS FUV+NUV echelle spectra scaled to average 46 pc distance of Hyades targets. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD-27406 1 COS/NUV ACQ/IMA BOA MIRRORB none none none none 1 N/A GE HD-27406 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G HD-27406 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G HD-27406 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G HD-27406 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18188( 3) - 05-Nov-2025 13:54:05 - [ 11] Visit: 07 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 HD-28205 COS/NUV ACQ/IMA BOA MIRRORB 1 36 S (36 GE S) Comments: Spectrum: Castelli-Kurucz Models F8V 6250 4.0 Extinction E(B-V): None Normalization: Renormalized to vegamag = 7.404 in filter Johnson/V ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-28205 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=8300, FP-POS=ALL, 1 469 S G SEGMENT=A (1876 S) Comments: User uploaded spectrum: CHI1ORI-to-Hyads.txt-- Hyades age G0 dwarf Chi1 Orionis STIS FUV+NUV echelle spectra scaled to average 46 pc distance of Hyades targets. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD-28205 1 COS/NUV ACQ/IMA BOA MIRRORB none none none none 1 N/A GE HD-28205 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G HD-28205 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G HD-28205 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G HD-28205 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18188( 3) - 05-Nov-2025 13:54:05 - [ 12] Visit: 08 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 HD-28237 COS/NUV ACQ/IMA BOA MIRRORB 1 39 S (39 GE S) Comments: Spectrum: Castelli-Kurucz Models F8V 6250 4.0 Extinction E(B-V): None Normalization: Renormalized to vegamag = 7.482 in filter Johnson/V ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-28237 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=8300, FP-POS=ALL, 1 467 S G SEGMENT=A (1868 S) Comments: User uploaded spectrum: CHI1ORI-to-Hyads.txt-- Hyades age G0 dwarf Chi1 Orionis STIS FUV+NUV echelle spectra scaled to average 46 pc distance of Hyades targets. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD-28237 1 COS/NUV ACQ/IMA BOA MIRRORB none none none none 1 N/A GE HD-28237 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G HD-28237 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G HD-28237 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G HD-28237 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18188( 3) - 05-Nov-2025 13:54:05 - [ 13] Visit: 09 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 HD-28593 COS/NUV ACQ/IMA BOA MIRRORA 1 11.5 S GE (11.5 S) Comments: Spectrum: Castelli-Kurucz Models G8V 5500 4.5 Extinction E(B-V): None Normalization: Renormalized to vegamag = 8.572 in filter Johnson/V ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-28593 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=8300, FP-POS=ALL, 1 482 S G SEGMENT=A (1928 S) Comments: User uploaded spectrum: CHI1ORI-to-Hyads.txt-- Hyades age G0 dwarf Chi1 Orionis STIS FUV+NUV echelle spectra scaled to average 46 pc distance of Hyades targets. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD-28593 1 COS/NUV ACQ/IMA BOA MIRRORA none none none none 1 N/A GE HD-28593 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G HD-28593 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G HD-28593 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G HD-28593 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18188( 3) - 05-Nov-2025 13:54:05 - [ 14] Visit: 10 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 HD-28992 COS/NUV ACQ/IMA BOA MIRRORA 1 6 S (6 S) GE Comments: Spectrum: Castelli-Kurucz Models G2V 5750 4.5 Extinction E(B-V): None Normalization: Renormalized to vegamag = 7.898 in filter Johnson/V ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-28992 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=8300, FP-POS=ALL, 1 484 S G SEGMENT=A (1936 S) Comments: User uploaded spectrum: CHI1ORI-to-Hyads.txt-- Hyades age G0 dwarf Chi1 Orionis STIS FUV+NUV echelle spectra scaled to average 46 pc distance of Hyades targets. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD-28992 1 COS/NUV ACQ/IMA BOA MIRRORA none none none none 1 N/A GE HD-28992 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G HD-28992 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G HD-28992 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G HD-28992 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18188( 3) - 05-Nov-2025 13:54:05 - [ 15] Visit: 11 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 HD-29419 COS/NUV ACQ/IMA BOA MIRRORB 1 39.5 S GE (39.5 S) Comments: Spectrum: Castelli-Kurucz Models F8V 6250 4.0 Extinction E(B-V): None Normalization: Renormalized to vegamag = 7.501 in filter Johnson/V ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-29419 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=8300, FP-POS=ALL, 1 468 S G SEGMENT=A (1872 S) Comments: User uploaded spectrum: CHI1ORI-to-Hyads.txt-- Hyades age G0 dwarf Chi1 Orionis STIS FUV+NUV echelle spectra scaled to average 46 pc distance of Hyades targets. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD-29419 1 COS/NUV ACQ/IMA BOA MIRRORB none none none none 1 N/A GE HD-29419 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G HD-29419 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G HD-29419 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G HD-29419 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18188( 3) - 05-Nov-2025 13:54:05 - [ 16] Visit: 12 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 HD-30589 COS/NUV ACQ/IMA BOA MIRRORB 1 116 S (116 GE S) Comments: Spectrum: Castelli-Kurucz Models F8V 6250 4.0 Extinction E(B-V): None Normalization: Renormalized to abmag = 12.98 in filter GALEX/NUV ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-30589 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=8300, FP-POS=ALL, 1 429 S G SEGMENT=A (1716 S) Comments: User uploaded spectrum: CHI1ORI-to-Hyads.txt-- Hyades age G0 dwarf Chi1 Orionis STIS FUV+NUV echelle spectra scaled to average 46 pc distance of Hyades targets. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD-30589 1 COS/NUV ACQ/IMA BOA MIRRORB none none none none 1 N/A GE HD-30589 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G HD-30589 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G HD-30589 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G HD-30589 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18188( 3) - 05-Nov-2025 13:54:05 - [ 17] Summary Form for Proposal 18188 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures BOA, PSA ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/FUV, COS/NUV ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/IMAGE, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=8300, FP-POS=ALL, SEGMENT=A ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G140L, MIRRORA, MIRRORB ------------------------------------------------------------------------------------------------------------------------------------ Target Names HD-25825, HD-26736, HD-26767, HD-27250, HD-27282, HD-27406, HD-28205, HD-28237, HD-28593, HD-28992, HD-29419, HD-30589 ------------------------------------------------------------------------------------------------------------------------------------