Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 5398 Report Date: 18-Jul-95:17:18 Version: ********** Check-in Date: ********** 1.Proposal Title: ECLIPSE MAPPING OF THE CHROMOPSHERIC AND TRANSITION REGION STRUCTURE OF THE HYBRID CHROMOSPHERE STAR HR2554 (G6 II) ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID COOL STARS GO Sub Category ATMOSPHERES & WINDS ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Dr. Alexander Brown U. OF COLORADO USA (303) 492-7810 SENIOR RES ASSOCIATE ------------------------------------------------------------------------------------ 7. Abstract We propose to observe an eclipse of the Zeta Aurigae-type binary HR2554 using the GHRS. Every 195 days the A1 dwarf secondary passes behind the outer atmosphere of the G6 II primary and can be used as light source to observe absorption lines from plasma in the G star atmopshere. The G star has a hybrid-chromosphere structure with hot transition region plasma and a cool stellar wind. THESE OBSERVATIONS WOULD BE THE FIRST ECLIPSE OBSRRVATIONS OF THIS TYPE OF ATMOSPHERE WITH GHRS AND COMPARED WITH OUR RESULTS FOR THE K4 SUPERGIANT Zeta Aur, which shows only the typical red supergiant wind. We shall model the observed line profiles and determine the temperature structure, density stratification, wind acceleration/turbulence/ionization as a function of distance above the G star photosphere. The hot and cool plasma are intermixed in this outer atmosphere and we will quantify this "thermal bifurcation". Both the static and outflowing components of the atmopshere will be modelled. The mass loss rate and the wind velocity and density laws as a function of radius will be determined. The vast majority of the needed modelling code will have been developed already for our Zeta Aur analysis. This project represents an opportunity to significantly advance knowledge about the spatial structuring of cool star outer atmospheres and the physical process operating within them. ------------------------------------------------------------------------------------ 8. Scientific Key Words: G6II+A1 ECLIPSING BINARY SYSTEM ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 33.20 par: 0 10. Num targs pri: 1 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: HRS ------------------------------------------------------------------------------------ 12. Special sched req: Time Critical obs. ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 5398 PI: Dr. Alexander Brown Proposal Title: ECLIPSE MAPPING OF THE CHROMOPSHERIC AND TRANSITION REGION STRUCTURE OF THE HYBRID CHROMOSPHERE STAR HR2554 (G6 II) ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Pi Alexander Brown 1764 USA Jeffrey L. Linsky 1764 USA Philip Bennett 1764 USA Graham Harper 1764 USA Robert Baade 5580 GERMANY X Thomas Kirsch 5580 GERMANY X Dieter Reimers 5580 GERMANY X ------------------------------------------------------------------------------------ 3. Description of proposed observations. Our proposed observations will provide the first high-quality (S/N = 60- 80) UV spectrum of HR2554 during atmospheric and photospheric eclipse. Requested exposures are listed below. The exposure times at short wavelengths during partial eclipse are increased by 50% to compensate somewhat for the decrease continuum signal. The quoted signal-to-noise values are calculated per resolution element (i.e. per two diodes on the detector). The large dynamic range and low noise of the GHRS ensures that many weak features can be accurately measured in these exposures. The observations requested in Phase 1 were: The observations requested in Phase 1 were: ------------------------------------------------------ ---------------- Ion UV Lambda Grating Continuum Cts/ S/N Exp. mult. (A) Flux*E-12 sec Time erg/(cm^2*s*A) (min) ----------------------------------------------- ----------------------- C IV 1 1548.20, 1550.77 G160M 5.0 2.3 80 24 (ALSO includes Si II UV2 1533.4, C I UV3 1560-61, Fe II UV45 1559.1, 1563.8, CO A-X (0-0) 1544 bandhead ) Si IV 1 1393.76, 1402.77 G160M 2.5 1.3 60 23 (ALSO includes CO A-X (5-0;4-0) 1393,1419 bandheads, Si II UV 13.02 1409.0, 1410.2, O IV 1401.2 ) Si II 1 1816.93 G200M 4.5 3.7 80 15 (ALSO includes S I UV2 1820.3 1826.2, Al III UV1 1854.7 ) Mg II 1 2795.52, 2802.70 ECH-B 4.5 5.4 80 10 Fe II 1 2607.09, 2613.82 ECH-B 2.8 1.3 60 23 2611.87 Fe II 3 2332.80, 2338.01 ECH-B 3.6 2.4 80 23 (ALSO includes Si II UV0.01 2334.6, Fe II UV35 2331.3 ) Ti II 5 3072.11, 3072.97 ECH-B 10.0 3.2 80 16 3075.23, 3078.65 3078.65 ** THE 3074 A REGION ABANDONED DUE TO LARGE PHASE 2 RESOURCE ESTIMATE ** ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. The continuum of the A dwarf secondary of Zeta Aur is prominent only in the ultraviolet and data required for this program are not therefore obtainable from the ground. IUE has been used extensively to study this target and further observational advances depend on the acquisition of higher S/N spectra with GHRS. The increased sensitivity, wavelength resolution, dynamic range and S/N characteristics of the GHRS over those obtainable with the IUE (Carpenter et al. 1992, Ap.J. Lett., 377, L45.) will allow more accurate and detailed modelling of the circumstellar environment around the G6 hybrid-atmosphere bright giant primary of HR2554. ONLY THE GHRS IS CAPABLE OF PROVIDING THE VERY HIGH PRECISION LINE PROFILES, FLUXES, AND ABSOLUTE VELOCITIES NEEDED FOR OUR MODELLING. Page 3 ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. The observations must be scheduled at specific phases during the eclipse of the A1 dwarf secondary by the extended atmosphere of the bright giant primary. Eclipses of HR2554 occur every 195 days and during Cycle 4 eclipses are centered on 1994 April 18 and 1994 October 30. The system lies near the ecliptic pole so the beta angle (star-antiSun angle) is always close to 90 degrees. Therefore, the star is observable by HST at all dates during Cycle 4. Coordinated IUE observations will be possible if the April eclipse is observed. Times of mideclipse are given by t = JD2447898.57 + n*195.28days. Observations are requested 1 month before mid-eclipse, and at -4.5,-3.0, -1.7,- 0.8,+0.8,+1.7,+3.0,+4.5 days relative to mid-eclipse. The time between first and fourth contacts is 3.2 days. (See Schroder 1990, A&A, 236,165 for details). Eclipses during Cycle 4 occur on 1994 April 18.31 and October 30.59. The Exposure Logsheet is constructed specifically for the April 1994, if the October eclipse is actually observed a new version of the Phase 2 form will be provided. ------------------------------------------------------------------------------------ 6. Description of special calibration exposures. We require high wavelength accuracy in order to measure absolute velocities in the chromosphere and wind of our target star. We therefore request one WAVECAL exposure for ECH-B and G160M at each epoch. Wavelength matching between different spectra at each epoch and between epochs will be done using interstellar features. Routine SPYBAL spectra will be used to calibrate spectra without dedicated WAVCALS. The WAVCAL exposures must be taken at the same carrousel position and close in time to the science exposures to remove uncertainties caused by GIMP and thermal drifts which move the image around on the GHRS photocathode. ------------------------------------------------------------------------------------ 8. Additional comments or special requests. None. ------------------------------------------------------------------------------------ 9. Description of previous HST work. GO Program 3626 - Empirical determination of the wind velocity and density laws for the K supergiant Zeta Aurigae from eclipse ingress Spectra (A. Brown PI, J. Linsky, R. Weyman, D. Reimers, R. Baade, T. Kirsch) ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). Software developed by the GHRS IDT and the proposers will be used in the reduction and analysis of these observations. A workstation at JILA connected to the CASA cluster is available for data reduction and analysis. ------------------------------------------------------------------------------------ 11. Address Information Name: Alexander Brown Category: PI Institution: Joint Institute for Laboratory As Address: University of Colorado City: Boulder State: CO Zip Code: 803090440 Country: USA Telephone: (303) 492-7810 Telex (or e-mail): 755842 JILA ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 5398 [ 4] ------------------------------------------------------------------------------------------------------------------------------------ 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 HD50337 A,138,123 RA=06H48M46.13S+/-0.01S, 1950 V=0.0 1 V=4.40 DEC=-53D33'47.15"+/-0.2" 1 B-V=+0.92 2 F-CONT(1835) = 4.5E-12 3 F-CONT(1543) = 5.0E-12 4 F-CONT(1400) = 2.5E-12 5 F-CONT(2334) = 3.6E-12 6 F-CONT(2611) = 2.8E-12 7 F-CONT(2799) = 4.5E-12 Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) B 1950.00 -0.0004 +/- 0.0006 0.0300 +/- 0.0050 0.0000 +/- 0.0000 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5398 [ 5] ------------------------------------------------------------------------------------------------------------------------------------ 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 ------------------------------------------------------------------------------------------------------------------------------------ 4 DEFINE HD50337 HRS ACCUM 2.0 G200M 1835 STEP-PATT=5 1 980S 80.0 2 1 HR2554A FP-SPLIT=STD ------------------------------------------------------------------------------------------------------------------------------------ 4.1 DEFINE HD50337 HRS ACCUM 2.0 G160M 1548 STEP-PATT=5 1 1523S 80.0 3 1 HR2554A FP-SPLIT=STD ------------------------------------------------------------------------------------------------------------------------------------ 4.2 DEFINE WAVE HRS ACCUM SC2 G160M 1403 STEP-PATT=3 1 64S 3 CALIB FOR 4.3 NO HR2554A SLEW ------------------------------------------------------------------------------------------------------------------------------------ 4.3 DEFINE HD50337 HRS ACCUM 2.0 G160M 1403 STEP-PATT=5 1 1416S 60.0 4 1 HR2554A FP-SPLIT=STD ------------------------------------------------------------------------------------------------------------------------------------ 4.4 DEFINE HD50337 HRS ACCUM 2.0 ECH-B 2334 STEP-PATT=7 1 1416S 80.0 5 1 HR2554A FP-SPLIT=STD ------------------------------------------------------------------------------------------------------------------------------------ 4.5 DEFINE HD50337 HRS ACCUM 2.0 ECH-B 2611 STEP-PATT=7 1 1416S 60.0 6 1 HR2554A FP-SPLIT=STD ------------------------------------------------------------------------------------------------------------------------------------ 4.6 DEFINE WAVE HRS ACCUM SC2 ECH-B 2800 STEP-PATT=3 1 64S 3 CALIB FOR 4.7 NO HR2554A SLEW ------------------------------------------------------------------------------------------------------------------------------------ 4.7 DEFINE HD50337 HRS ACCUM 2.0 ECH-B 2800 STEP-PATT=7 1 600S 80.0 7 1 HR2554A FP-SPLIT=STD ------------------------------------------------------------------------------------------------------------------------------------ 5 DEFINE HD50337 HRS ACCUM 2.0 G200M 1835 STEP-PATT=5 1 1200S 60.0 2 1 HR2554B FP-SPLIT=STD ------------------------------------------------------------------------------------------------------------------------------------ 5.1 DEFINE HD50337 HRS ACCUM 2.0 G160M 1548 STEP-PATT=5 2 1088S 60.0 3 1 HR2554B FP-SPLIT=STD ------------------------------------------------------------------------------------------------------------------------------------ 5.2 DEFINE WAVE HRS ACCUM SC2 G160M 1403 STEP-PATT=3 1 64S 3 CALIB FOR 5.3 NO HR2554B SLEW ------------------------------------------------------------------------------------------------------------------------------------ 5.3 DEFINE HD50337 HRS ACCUM 2.0 G160M 1403 STEP-PATT=5 2 1088S 60.0 4 1 HR2554B FP-SPLIT=STD ------------------------------------------------------------------------------------------------------------------------------------ 5.4 DEFINE HD50337 HRS ACCUM 2.0 ECH-B 2334 STEP-PATT=7 2 762S 60.0 5 1 HR2554B FP-SPLIT=STD ------------------------------------------------------------------------------------------------------------------------------------ 5.5 DEFINE HD50337 HRS ACCUM 2.0 ECH-B 2611 STEP-PATT=7 2 762S 60.0 6 1 HR2554B FP-SPLIT=STD ------------------------------------------------------------------------------------------------------------------------------------ 5.6 DEFINE WAVE HRS ACCUM SC2 ECH-B 2800 STEP-PATT=3 1 64S 3 CALIB FOR 5.7 NO HR2554B SLEW ------------------------------------------------------------------------------------------------------------------------------------ 5.7 DEFINE HD50337 HRS ACCUM 2.0 ECH-B 2800 STEP-PATT=7 1 762S 60.0 7 1 HR2554B FP-SPLIT=STD ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5398 [ 6] ------------------------------------------------------------------------------------------------------------------------------------ 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 HD50337 HRS ACQ 2.0 MIRROR-A2 BRIGHT=RETURN 1 9S 1 1 CYCLE 4 / 10-12 SEARCH-SIZE=3 2 ONBOARD ACQ FOR 11 GROUP 10-12 NO GAP AT 19-MAR-94 +/- 5D Comments: STEP-TIME = 1 SEC EXPECT 1300 CT/S WITH A2 NORMALLY, 770 CT/S AT MAX ECLIPSE. PHASE IS 30 DAYS BEFORE MID-ECLIPSE ------------------------------------------------------------------------------------------------------------------------------------ 11 HD50337 HRS ACQ/ 2.0 MIRROR-A2 1 163.2S 1 ONBOARD ACQ FOR 12 PEAKUP Comments: STEP-TIME=1.6S ------------------------------------------------------------------------------------------------------------------------------------ 12 USE AT 19-MAR-94 +/- HR2554A 5D ------------------------------------------------------------------------------------------------------------------------------------ 20 HD50337 HRS ACQ 2.0 MIRROR-A2 BRIGHT=RETURN 1 9S 1 1 CYCLE 4 / 20-22 SEARCH-SIZE=3 2 ONBOARD ACQ FOR 21 GROUP 20-22 NO GAP AT JD2449456.3 +/- 0.5D Comments: STEP-TIME = 1 SEC EXPECT 1300 CT/S WITH A2 NORMALLY, 770 CT/S AT MAX ECLIPSE. PHASE IS 4.5 DAYS BEFORE MID-ECLIPSE ------------------------------------------------------------------------------------------------------------------------------------ 21 HD50337 HRS ACQ/ 2.0 MIRROR-A2 1 163.2S 1 ONBOARD ACQ FOR 22 PEAKUP Comments: STEP-TIME=1.6S ------------------------------------------------------------------------------------------------------------------------------------ 22 USE AT JD2449456.3 +/- HR2554A 0.5D ------------------------------------------------------------------------------------------------------------------------------------ 30 HD50337 HRS ACQ 2.0 MIRROR-A2 BRIGHT=RETURN 1 9S 1 1 CYCLE 4 / 30-32 SEARCH-SIZE=3 2 ONBOARD ACQ FOR 31 GROUP 30-32 NO GAP AT JD2449457.8 +/- 0.3D Comments: STEP-TIME = 1 SEC EXPECT 1300 CT/S WITH A2 NORMALLY, 770 CT/S AT MAX ECLIPSE. PHASE IS 3 DAYS BEFORE MID-ECLIPSE ------------------------------------------------------------------------------------------------------------------------------------ 31 HD50337 HRS ACQ/ 2.0 MIRROR-A2 1 163.2S 1 ONBOARD ACQ FOR 32 PEAKUP Comments: STEP-TIME=1.6S ------------------------------------------------------------------------------------------------------------------------------------ 32 USE AT JD2449457.8 +/- HR2554A 0.3D ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5398 [ 7] ------------------------------------------------------------------------------------------------------------------------------------ 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 ------------------------------------------------------------------------------------------------------------------------------------ 40 HD50337 HRS ACQ 2.0 MIRROR-A2 BRIGHT=RETURN 1 9S 1 1 CYCLE 4 / 40-42 SEARCH-SIZE=3 2 ONBOARD ACQ FOR 41 GROUP 40-42 NO GAP AT JD2449459.1 +/- 0.25D Comments: STEP-TIME = 1 SEC EXPECT 1300 CT/S WITH A2 NORMALLY, 770 CT/S AT MAX ECLIPSE. PHASE IS 1.7 DAYS BEFORE MID-ECLIPSE ------------------------------------------------------------------------------------------------------------------------------------ 41 HD50337 HRS ACQ/ 2.0 MIRROR-A2 1 163.2S 1 ONBOARD ACQ FOR 42 PEAKUP Comments: STEP-TIME=1.6S ------------------------------------------------------------------------------------------------------------------------------------ 42 USE AT JD2449459.1 +/- HR2554A 0.25D ------------------------------------------------------------------------------------------------------------------------------------ 50 HD50337 HRS ACQ 2.0 MIRROR-A2 BRIGHT=RETURN 1 9S 1 1 CYCLE 4 / 50-52 SEARCH-SIZE=3 2 ONBOARD ACQ FOR 51 GROUP 50-52 NO GAP AT JD2449460.0 +/- 0.2D Comments: STEP-TIME = 1 SEC EXPECT 1300 CT/S WITH A2 NORMALLY, 770 CT/S AT MAX ECLIPSE. PHASE IS 0.8 DAYS BEFORE MID-ECLIPSE ------------------------------------------------------------------------------------------------------------------------------------ 51 HD50337 HRS ACQ/ 2.0 MIRROR-A2 1 163.2S 1 ONBOARD ACQ FOR 52 PEAKUP Comments: STEP-TIME=1.6S ------------------------------------------------------------------------------------------------------------------------------------ 52 USE AT JD2449460.0 +/- HR2554B 0.2D ------------------------------------------------------------------------------------------------------------------------------------ 60 HD50337 HRS ACQ 2.0 MIRROR-A2 BRIGHT=RETURN 1 9S 1 1 CYCLE 4 / 60-62 SEARCH-SIZE=3 2 ONBOARD ACQ FOR 61 GROUP 60-62 NO GAP AT JD2449461.6 +/- 0.2D Comments: STEP-TIME = 1 SEC EXPECT 1300 CT/S WITH A2 NORMALLY, 770 CT/S AT MAX ECLIPSE. PHASE IS 0.8 DAYS AFTER MID-ECLIPSE ------------------------------------------------------------------------------------------------------------------------------------ 61 HD50337 HRS ACQ/ 2.0 MIRROR-A2 1 163.2S 1 ONBOARD ACQ FOR 62 PEAKUP Comments: STEP-TIME=1.6S ------------------------------------------------------------------------------------------------------------------------------------ 62 USE AT JD2449461.6 +/- HR2554B 0.2D ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5398 [ 8] ------------------------------------------------------------------------------------------------------------------------------------ 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 ------------------------------------------------------------------------------------------------------------------------------------ 70 HD50337 HRS ACQ 2.0 MIRROR-A2 BRIGHT=RETURN 1 9S 1 1 CYCLE 4 / 70-72 SEARCH-SIZE=3 2 ONBOARD ACQ FOR 71 GROUP 70-72 NO GAP AT JD2449462.5 +/- 0.25D Comments: STEP-TIME = 1 SEC EXPECT 1300 CT/S WITH A2 NORMALLY, 770 CT/S AT MAX ECLIPSE. PHASE IS 1.7 DAYS AFTER MID-ECLIPSE ------------------------------------------------------------------------------------------------------------------------------------ 71 HD50337 HRS ACQ/ 2.0 MIRROR-A2 1 163.2S 1 ONBOARD ACQ FOR 72 PEAKUP Comments: STEP-TIME=1.6S ------------------------------------------------------------------------------------------------------------------------------------ 72 USE AT JD2449462.5 +/- HR2554A 0.25D ------------------------------------------------------------------------------------------------------------------------------------ 80 HD50337 HRS ACQ 2.0 MIRROR-A2 BRIGHT=RETURN 1 9S 1 1 CYCLE 4 / 80-82 SEARCH-SIZE=3 2 ONBOARD ACQ FOR 81 GROUP 80-82 NO GAP AT JD2449463.8 +/- 0.3D Comments: STEP-TIME = 1 SEC EXPECT 1300 CT/S WITH A2 NORMALLY, 770 CT/S AT MAX ECLIPSE. PHASE IS 3 DAYS BEFORE MID-ECLIPSE ------------------------------------------------------------------------------------------------------------------------------------ 81 HD50337 HRS ACQ/ 2.0 MIRROR-A2 1 163.2S 1 ONBOARD ACQ FOR 82 PEAKUP Comments: STEP-TIME=1.6S ------------------------------------------------------------------------------------------------------------------------------------ 82 USE AT JD2449463.8 +/- HR2554A 0.3D ------------------------------------------------------------------------------------------------------------------------------------ 90 HD50337 HRS ACQ 2.0 MIRROR-A2 BRIGHT=RETURN 1 9S 1 1 CYCLE 4 / 90-92 SEARCH-SIZE=3 2 ONBOARD ACQ FOR 91 GROUP 90-92 NO GAP AT JD2449465.3 +/- 0.5D Comments: STEP-TIME = 1 SEC EXPECT 1300 CT/S WITH A2 NORMALLY, 770 CT/S AT MAX ECLIPSE. PHASE IS 4.5 DAYS BEFORE MID-ECLIPSE ------------------------------------------------------------------------------------------------------------------------------------ 91 HD50337 HRS ACQ/ 2.0 MIRROR-A2 1 163.2S 1 ONBOARD ACQ FOR 92 PEAKUP Comments: STEP-TIME=1.6S ------------------------------------------------------------------------------------------------------------------------------------ 92 USE AT JD2449465.3 +/- HR2554A 0.5D ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 5398 [ 9] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations HRS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ACQ ACQ/PEAKUP ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters STEP-PATT=5 FP-SPLIT=STD STEP-PATT=3 STEP-PATT=7 BRIGHT=RETURN SEARCH-SIZE=3 ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GO ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 33.20 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category COOL STARS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category ATMOSPHERES & WINDS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements CALIB FOR 4.3 NO SLEW CALIB FOR 4.7 NO SLEW CALIB FOR 5.3 NO SLEW CALIB FOR 5.7 NO SLEW CYCLE 4 / 10-12; ONBOARD ACQ FOR 11; GROUP 10-12 NO GAP; AT 19-MAR-94 +/- 5D ONBOARD ACQ FOR 12 CYCLE 4 / 20-22; ONBOARD ACQ FOR 21; GROUP 20-22 NO GAP; AT JD2449456.3 +/- 0.5D ONBOARD ACQ FOR 22 CYCLE 4 / 30-32; ONBOARD ACQ FOR 31; GROUP 30-32 NO GAP; AT JD2449457.8 +/- 0.3D ONBOARD ACQ FOR 32 CYCLE 4 / 40-42; ONBOARD ACQ FOR 41; GROUP 40-42 NO GAP; AT JD2449459.1 +/- 0.25D ONBOARD ACQ FOR 42 CYCLE 4 / 50-52; ONBOARD ACQ FOR 51; GROUP 50-52 NO GAP; AT JD2449460.0 +/- 0.2D ONBOARD ACQ FOR 52 CYCLE 4 / 60-62; ONBOARD ACQ FOR 61; GROUP 60-62 NO GAP; AT JD2449461.6 +/- 0.2D ONBOARD ACQ FOR 62 CYCLE 4 / 70-72; ONBOARD ACQ FOR 71; GROUP 70-72 NO GAP; AT JD2449462.5 +/- 0.25D ONBOARD ACQ FOR 72 CYCLE 4 / 80-82; ONBOARD ACQ FOR 81; GROUP 80-82 NO GAP; AT JD2449463.8 +/- 0.3D ONBOARD ACQ FOR 82 CYCLE 4 / 90-92; ONBOARD ACQ FOR 91; GROUP 90-92 NO GAP; AT JD2449465.3 +/- 0.5D ONBOARD ACQ FOR 92 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G200M G160M ECH-B MIRROR-A2 ------------------------------------------------------------------------------------------------------------------------------------ Target Names HD50337 ------------------------------------------------------------------------------------------------------------------------------------