Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 31 Report Date: 18-Jul-95:16:34 Version: ********** Check-in Date: ********** 1.Proposal Title: HELIUM IN THE EARLY UNIVERSE ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID QUASARS & AGN GO Sub Category QUASAR EMISSION ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Dr. Joe Astronomer STSCI USA (301) 338-4700 ------------------------------------------------------------------------------------ 7. Abstract We will use the FOS to measure the strength of the He I lambda 584 line in the UV in a QSO which has a good probability of having light at that wavelength. We will test the ability of the FOS to detect weak emission lines against a background of weak absorption lines in a faint object with the degraded performance due to the slit losses, decreased resolution, possible increased scattered light and greater than expected particle-induced background. From this line we will determine the relative abundance of Helium in the early universe. ------------------------------------------------------------------------------------ 8. Scientific Key Words: UV SPECTROSCOPY, QUASAR, EMISSION LINE PROFILE, ABUNDANCE EVOLUTION, ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 1.71 par: 0 10. Num targs pri: 1 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: FOS ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 31 PI: Dr. Joe Astronomer Proposal Title: HELIUM IN THE EARLY UNIVERSE ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Dr. Joe Astronomer SPACE TELESCOPE SCIENCE USA INSTITUTE ------------------------------------------------------------------------------------ 3. Description of proposed observations. This proposal contains 1 object which will be observed with G160L and the red detector of the FOS. S/N will be 20 per diode allowing us to detect a weak emission line. A very short exposure will be used to measure the absolute flux. ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. Justification for use of HST goes here (optional). ------------------------------------------------------------------------------------ 6. Description of special calibration exposures. Justification for any special calibrations, use of dark time, or uninterupted exposures goes here. ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. A description of your data reduction plans go here. ------------------------------------------------------------------------------------ 8. Additional comments or special requests. Any additional comments go here. ------------------------------------------------------------------------------------ 9. Description of previous HST work. A description of any previous HST data goes here. ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). Resources provided by your home institution goes here. ------------------------------------------------------------------------------------ 11. Address Information Name: JOE ASTRONOMER Category: PI Institution: STSCI Address: 3700 SAN MARTIN DRIVE City: BALTIMORE State: MD Zip Code: 21218 Country: USA Telephone: (301) 338-4700 Telex (or e-mail): ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 31 [ 3] ------------------------------------------------------------------------------------------------------------------------------------ 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial |Acqui|FLX| Flux data No | Name | Description | Position |Eqnx | Vel. |Prblm|REF| | | | | | | | | ------------------------------------------------------------------------------------------------------------------------------------ 1 UM675 0150- QUASAR PLATE-ID = 05XZ, 2000 Z=2.15 1 V=17.1 +/- 0.5 202 RA = 01H 52M 27.291S +/- 1.0", DEC = -20D 01' 07.29" +/- 1.0" ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 31 [ 4] ------------------------------------------------------------------------------------------------------------------------------------ 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |10 | 11 | 12 |13 |14| 15 ------------------------------------------------------------------------------------------------------------------------------------ Line | Seq | Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | S/N |Flx|Pr| Special Number | Name | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| |Rel. Time|Ref| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 UM675 FOS/RD ACQ/ 4.3 MIRROR BRIGHT=700000 1 22S 1 1 ONBOARD ACQ FOR 2- BINARY 4 CYCLE 0 / 1-4 ------------------------------------------------------------------------------------------------------------------------------------ 2 UM675 FOS/RD ACQ 4.3 MIRROR 1 22S 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 3 UM675 FOS/RD ACCUM 4.3 G160L 1600 1 100S 4 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 4 UM675 FOS/RD ACCUM 1.0 G160L 1600 1 6000S 20 1 1 ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 31 [ 5] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FOS/RD ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/BINARY ACQ ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BRIGHT ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GO ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 1.71 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category QUASARS & AGN ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category QUASAR EMISSION ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ONBOARD ACQ FOR 2-4; CYCLE 0 / 1-4 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR G160L ------------------------------------------------------------------------------------------------------------------------------------ Target Names UM675 0150-202 ------------------------------------------------------------------------------------------------------------------------------------