5781( 9) - 09/13/95 13:50 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 5781 Version: 9 Check-in Date: ********** 1.Proposal Title: EMISSION LINE VARIABILITY IN THE LENSED QUASAR Q0957+561; CARRYOVER ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Cycle QUASARS AUG/HSP 4 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: ROBERT BLESS University of Wisconsin CoI: Joseph Dolan NASA/GSFC Y CoI: Randall Thompson NASA/GSFC N CoI: Andrew G. Michalitsianos NASA/GSFC N CoI: Patricia T. Boyd NASA/GSFC N ------------------------------------------------------------------------------------ 6. Abstract We have reprocessed IUE archival data of both images of the gravitationally lensed quasar Q0957+561A,B with the NEWSIPS algorithm (Michalitsianos et al. 1993). Examination of the individual spectral image by Dolan et al. (1995) shows that the flux ratio of A to B between 1981 and 1983 varies between 0.96 and 2.0 in the Lyman alpha line, and between 0.77 and 1.8 in O VI 1037 angstrom line. significant variations occur on a timescale of two weeks. The intensity ratio of A to B at any single epoch is often significantly different in the two emission lines. Accepting Q0957+561 as a gravitational lens impliesthat the flux in the Lyman alpha emission line must vary independently of that in the O VI line. We propose to monitor the two images of Q0957+561 with the FOS at 7 successive epochs on 2 week centers to confirm this interpretation and rule out microlensing as the cause of the variability. Establishing the independent variability of emission lines in quasars would be a discovery which would be directly applicable to the understanding of emission line forming regions in quasars. ------------------------------------------------------------------------------------ Observations Description ------------------------ Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 5781( 9) - 09/13/95 13:50 - [ 2] Data Distribution Media: 8MM Blocking Factor: 10 Ship To: Dr. Joseph Dolan*NASA/GSFC*Mail Code 681, Bldg. 21*Greenbelt, MD 20707 Ship Via: UPS Email: tejfd@larry.sal.wisc.edu , ------------------------------------------------------------------------------------ 5781( 9) - 09/13/95 13:50 - [ 3] TARGET LIST a) Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 Q0957+561A GALAXY,QUASAR,GRAVITATI RA=10H 1M 20.8S +/- 0.100S, DEC= J2000 V = 17.4 ONAL LENS, 55D 53' 55.4" +/- 1.00" Comments: GRAVITATIONALLY LENSED QUASAR 2 Q0957+561B GALAXY,QUASAR,GRAVITATI RA-OFF= 0.143S +/- 0.007S, DEC- J2000 V = 17.5 ONAL LENS, OFF= -6.060" +/- 0.100", FROM 1 5781( 9) - 09/13/95 13:50 - [ 4] Visit: 01 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 Q0957+561A FOS/BL ACQ/PEA 4.3 MIRROR SEARCH-SIZE- 1 6S ONBOARD ACQ FOR 20 K Y=3, SEARCH- SIZE-X=1, SCAN- STEP-Y=1.204 ------------------------------------------------------------------------------------------------------------------------------------ 20 Q0957+561A FOS/BL ACQ/PEA 1.0 MIRROR SEARCH-SIZE- 1 7S ONBOARD ACQ FOR 30 K Y=2, SEARCH- SIZE-X=6, SCAN- STEP-Y=0.602, SCAN-STEP- Comments: X=0.602 ------------------------------------------------------------------------------------------------------------------------------------ 30 Q0957+561A FOS/BL ACQ/PEA 0.3 MIRROR SEARCH-SIZE- 1 15S ONBOARD ACQ FOR 40-50 K Y=5, SEARCH- SIZE-X=5, SCAN- STEP-Y=0.172, SCAN-STEP- Comments: X=0.172 ------------------------------------------------------------------------------------------------------------------------------------ 40 Q0957+561A FOS/BL ACCUM 1.0 G270H 1 420S ------------------------------------------------------------------------------------------------------------------------------------ 50 Q0957+561B FOS/BL ACCUM 1.0 G270H 1 420S ------------------------------------------------------------------------------------------------------------------------------------ 5781( 9) - 09/13/95 13:50 - [ 5] Visit: 02 Visit Requirements: AFTER 01 BY 13D TO 15D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 Q0957+561A FOS/BL ACQ/PEA 4.3 MIRROR SEARCH-SIZE- 1 6S ONBOARD ACQ FOR 20 K Y=3, SEARCH- SIZE-X=1, SCAN- STEP-Y=1.204 ------------------------------------------------------------------------------------------------------------------------------------ 20 Q0957+561A FOS/BL ACQ/PEA 1.0 MIRROR SEARCH-SIZE- 1 7S ONBOARD ACQ FOR 30 K Y=2, SEARCH- SIZE-X=6, SCAN- STEP-Y=0.602, SCAN-STEP- Comments: X=0.602 ------------------------------------------------------------------------------------------------------------------------------------ 30 Q0957+561A FOS/BL ACQ/PEA 0.3 MIRROR SEARCH-SIZE- 1 15S ONBOARD ACQ FOR 40-50 K Y=5, SEARCH- SIZE-X=5, SCAN- STEP-Y=0.172, SCAN-STEP- Comments: X=0.172 ------------------------------------------------------------------------------------------------------------------------------------ 40 Q0957+561A FOS/BL ACCUM 1.0 G270H 1 420S ------------------------------------------------------------------------------------------------------------------------------------ 50 Q0957+561B FOS/BL ACCUM 1.0 G270H 1 420S ------------------------------------------------------------------------------------------------------------------------------------ 5781( 9) - 09/13/95 13:50 - [ 6] Visit: 03 Visit Requirements: AFTER 01 BY 27D TO 29D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 Q0957+561A FOS/BL ACQ/PEA 4.3 MIRROR SEARCH-SIZE- 1 6S ONBOARD ACQ FOR 20 K Y=3, SEARCH- SIZE-X=1, SCAN- STEP-Y=1.204 ------------------------------------------------------------------------------------------------------------------------------------ 20 Q0957+561A FOS/BL ACQ/PEA 1.0 MIRROR SEARCH-SIZE- 1 7S ONBOARD ACQ FOR 30 K Y=2, SEARCH- SIZE-X=6, SCAN- STEP-Y=0.602, SCAN-STEP- Comments: X=0.602 ------------------------------------------------------------------------------------------------------------------------------------ 30 Q0957+561A FOS/BL ACQ/PEA 0.3 MIRROR SEARCH-SIZE- 1 15S ONBOARD ACQ FOR 40-50 K Y=5, SEARCH- SIZE-X=5, SCAN- STEP-Y=0.172, SCAN-STEP- Comments: X=0.172 ------------------------------------------------------------------------------------------------------------------------------------ 40 Q0957+561A FOS/BL ACCUM 1.0 G270H 1 420S ------------------------------------------------------------------------------------------------------------------------------------ 50 Q0957+561B FOS/BL ACCUM 1.0 G270H 1 420S ------------------------------------------------------------------------------------------------------------------------------------ 5781( 9) - 09/13/95 13:50 - [ 7] Visit: 04 Visit Requirements: AFTER 01 BY 41D TO 43D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 Q0957+561A FOS/BL ACQ/PEA 4.3 MIRROR SEARCH-SIZE- 1 6S ONBOARD ACQ FOR 20 K Y=3, SEARCH- SIZE-X=1, SCAN- STEP-Y=1.204 ------------------------------------------------------------------------------------------------------------------------------------ 20 Q0957+561A FOS/BL ACQ/PEA 1.0 MIRROR SEARCH-SIZE- 1 7S ONBOARD ACQ FOR 30 K Y=2, SEARCH- SIZE-X=6, SCAN- STEP-Y=0.602, SCAN-STEP- Comments: X=0.602 ------------------------------------------------------------------------------------------------------------------------------------ 30 Q0957+561A FOS/BL ACQ/PEA 0.3 MIRROR SEARCH-SIZE- 1 15S ONBOARD ACQ FOR 40-50 K Y=5, SEARCH- SIZE-X=5, SCAN- STEP-Y=0.172, SCAN-STEP- Comments: X=0.172 ------------------------------------------------------------------------------------------------------------------------------------ 40 Q0957+561A FOS/BL ACCUM 1.0 G270H 1 420S ------------------------------------------------------------------------------------------------------------------------------------ 50 Q0957+561B FOS/BL ACCUM 1.0 G270H 1 420S ------------------------------------------------------------------------------------------------------------------------------------ 5781( 9) - 09/13/95 13:50 - [ 8] Visit: 05 Visit Requirements: AFTER 01 BY 55D TO 57D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 Q0957+561A FOS/BL ACQ/PEA 4.3 MIRROR SEARCH-SIZE- 1 6S ONBOARD ACQ FOR 20 K Y=3, SEARCH- SIZE-X=1, SCAN- STEP-Y=1.204 ------------------------------------------------------------------------------------------------------------------------------------ 20 Q0957+561A FOS/BL ACQ/PEA 1.0 MIRROR SEARCH-SIZE- 1 7S ONBOARD ACQ FOR 30 K Y=2, SEARCH- SIZE-X=6, SCAN- STEP-Y=0.602, SCAN-STEP- Comments: X=0.602 ------------------------------------------------------------------------------------------------------------------------------------ 30 Q0957+561A FOS/BL ACQ/PEA 0.3 MIRROR SEARCH-SIZE- 1 15S ONBOARD ACQ FOR 40-50 K Y=5, SEARCH- SIZE-X=5, SCAN- STEP-Y=0.172, SCAN-STEP- Comments: X=0.172 ------------------------------------------------------------------------------------------------------------------------------------ 40 Q0957+561A FOS/BL ACCUM 1.0 G270H 1 420S ------------------------------------------------------------------------------------------------------------------------------------ 50 Q0957+561B FOS/BL ACCUM 1.0 G270H 1 420S ------------------------------------------------------------------------------------------------------------------------------------ 5781( 9) - 09/13/95 13:50 - [ 9] Summary Form for Proposal 5781 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FOS/BL ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/PEAK ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters SEARCH-SIZE-Y=3 SEARCH-SIZE-X=1 SCAN-STEP-Y=1.204 SCAN-STEP-X=0.602 SCAN-STEP-X=0.172 SCAN-STEP-Y=0.602 SCAN-STEP-Y=0.172 SEARCH-SIZE-X=6 SEARCH-SIZE-X=5 SEARCH-SIZE-Y=2 SEARCH-SIZE-Y=5 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category AUG/HSP ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category QUASARS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ONBOARD ACQ FOR 20 ONBOARD ACQ FOR 30 ONBOARD ACQ FOR 40-50 AFTER 01 BY 13D TO 15D AFTER 01 BY 27D TO 29D AFTER 01 BY 41D TO 43D AFTER 01 BY 55D TO 57D ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR G270H ------------------------------------------------------------------------------------------------------------------------------------ Target Names Q0957+561A Q0957+561B ------------------------------------------------------------------------------------------------------------------------------------