Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 2945c Report Date: 09-May-96:17:38 Version: ********** Check-in Date: ********** 1.Proposal Title: INTERNAL VELOCITY DISTRIBUTION IN GLOBULAR CLUSTERS PART THREE ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID STELLAR POPULATIONS GTO/AST 5 Long Term yrs 1007 Sub Category ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone William H. Jefferys TEXAS, UNIVERSITY OF USA 512-471-4461 PROFESSOR ------------------------------------------------------------------------------------ 7. Abstract The goal of this project is to study the internal velocity di globular clusters with a range of characteristics. We expect virial mass for each cluster and a kinematic distance (statis where radial velocity observations exist. The radial and azim of the velocity distribution will be analyzed to determine th anisotropy in the velocities as a function of distance from t for three of the clusters. In addition, the degree to which e energy exists among the various mass groupings will be studie giants down to one-half solar mass in three of the clusters. The observations are designed to yield an accuracy of +/- 1 k derived cluster velocity dispersion at each location in the c nearer clusters and +/- 2 km/sec for the more distant cluster ------------------------------------------------------------------------------------ 8. Scientific Key Words: GLOBULAR CLUSTERS, PROPER MOTIONS, INTERNAL VELOCITIES ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 19.01 par: 0 10. Num targs pri: 22 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: WF/PC ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 2945c PI: William H. Jefferys Proposal Title: INTERNAL VELOCITY DISTRIBUTION IN GLOBULAR CLUSTERS PART THREE ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ William H. Jefferys TEXAS, UNIVERSITY OF USA George F. Benedict TEXAS, UNIVERSITY OF USA Raynor L. Duncombe TEXAS, UNIVERSITY OF USA Otto G. Franz LOWELL OBSERVATORY USA Laurence W. Fredrick VIRGINIA, UNIVERSITY OF USA Paul D. Hemenway TEXAS, UNIVERSITY OF USA Peter J. Shelus TEXAS, UNIVERSITY OF USA William F. Van Altena YALE UNIVERSITY USA ------------------------------------------------------------------------------------ 3. Description of proposed observations. The observations for each cluster are divided into four separ with different exposure levels. Spatially, the regions select central core, a region east of the center at 10 core radii, a east and west of the center at 20 core radii. Observations at radii will be used to study the run of isotropy in the veloci low density of stars far from the center, it is necessary to at 20 core radii. Each "exposure" consists of 5 separate expo each other by small amounts on the order of an arcsec. The pu offsets is to average out the pixel to pixel variations in th In addition, the first three of these exposures are taken wit the last two with the R filter. This group of exposures is de PC5. Due to image crowding in the center, only a short 25 sec taken, while at the other positions both a short 100 second a second exposure is taken. This range of exposures allows us t horizontal branch to the main sequence with a positional accu arcsec. These exposures will be repeated after five years to motions. The sequence PC10 is used to spatially calibrate the detector before and after the observations. The sequence consists of t randomly placed over the 32 x 32 subgrid of the CCD. It is ho observations to further increase the accuracy of the relative stars through a bootstrap calibration developed procedure sug Eichhorn. Due to time limitations, three of the clustes are to be obser their centers. The outer regions are included in the observin priority 3 objects. The total observing time listed on the co that priority 3 objects will not be observed and that filter made during the 60 second read out of the CCD. Cycle 1 18.22 hours Cycle 2 0.45 hours Cycle 3 0.00 hours Cycle 4 0.00 hours Cycle 5 0.00 hours ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. Ground based observations of the proper motions are limited b epoch plates, which usually have a very bright limiting magni addition, the poor seeing makes it impossible to observe near cluster and limits the positional accuracy to a value some 15 is possible with the PC. Since the difference in the position translates directly into a difference in the epoch difference wait at least 65 years for the second epoch on the ground. ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. The only special scheduling requirements are to maintain the angle for all of the exposures in one sequence. This is neces have the same stars on all exposures. Page 3 ------------------------------------------------------------------------------------ 6. Description of special calibration exposures. Sequence PC10 is used to obtain observations of the central r 6656 before and after the observations, which will hopefully during the first year of operations. The ten offset exposures obtain a bootstrap calibration of the spatial characteristics study the changes in the system over the observational period ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. The data reduction will be done with the Astrometric Data Red Software developed by the Astrometry Team on computational fa available at the home institutions of the Team members. ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). Computational facilities and the ADRS software package. ------------------------------------------------------------------------------------ 13. Planetary Camera exposures will be taken of six of the globul (NGC 104, NGC 1851, NGC 6205, NGC 6656, NGC 6752, NGC 7078, N determine their internal motions from the horizontal branch t sequence. These motions will also be used to study the degree and isotropy in stars of differing masses. In addition, expos taken of Pal 1 to determine its membership and tangential vel galactic frame of reference. ------------------------------------------------------------------------------------ 11. Address Information Name: WILLIAM H. JEFFERYS Category: PI Institution: UNIVERSITY OF TEXAS Address: ASTRONOMY DEPARTMENT City: AUSTIN State: TX Zip Code: Country: USA Telephone: Telex (or e-mail): ------------------------------------------------------------------------------------ Name: WILLIAM F. VAN ALTENA Category: CON Institution: YALE UNIVERSITY Address: 260 WHITNEY AVENUE City: NEW HAVEN State: CT Zip Code: 06511 Country: USA Telephone: (203) 436-8318 Telex (or e-mail): ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 2945c [ 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 NGC104 47TUC GLOBULAR CLUSTER RA= 0H 21M 52.28S +/- 0.1S, 1950 EXT DEC= -72D 21' 27.5" +/- 1" ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC104E1 ^ ^ ^ XI-OFF=+6.5' +/- 0.1', ETA-OFF=+0.0' +/- 0.1', FROM 1 ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC104E2 ^ ^ ^ XI-OFF=+13.5' +/- 0.1', ETA-OFF=0.0' +/- 0.1', FROM 1 ------------------------------------------------------------------------------------------------------------------------------------ 5 PAL1 ^ ^ ^ RA= 3H 26M 03.72S +/- 0.1S, DEC=+79D 24' 38.8" +/- 1" ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC1851 ^ ^ ^ DELTA-508 RA=5H 12M 27.63S +/- 0.1S, DEC=-40D 06' 13.2" +/- 1" ------------------------------------------------------------------------------------------------------------------------------------ 10 NGC6656 M22 ^ ^ ^ RA=18H 33M 21.12S +/- 0.1S, DEC=-23D 56' 44.2" +/- 1" ------------------------------------------------------------------------------------------------------------------------------------ 11 NGC6656E1 ^ ^ ^ XI-OFF=+19.1' +/- 0.1', ETA-OFF=0.0' +/- 0.1', FROM 10 ------------------------------------------------------------------------------------------------------------------------------------ 12 NGC6656E2 GLOBULAR CLUSTER 1950 EXT M22 XI-OFF=+38.2' +/- 0.1', ETA-OFF=0.0' +/- 0.1', FROM 10 ------------------------------------------------------------------------------------------------------------------------------------ 13 NGC6656W2 ^ ^ ^ XI-OFF=-38.2' +/- 0.1', ETA-OFF=0.0' +/- 0.1', FROM 10 ------------------------------------------------------------------------------------------------------------------------------------ 14 NGC6752 GLOBULAR CLUSTER 1950 EXT RA=19H 06M 27.30S +/- 0.1S, DEC=-60D 03' 50.5" +/- 1" ------------------------------------------------------------------------------------------------------------------------------------ 15 NGC6752E1 ^ ^ ^ XI-OFF=+5.0' +/- 0.1', ETA-OFF=0.0' +/- 0.1', FROM 14 ------------------------------------------------------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 2945c [ 5] ------------------------------------------------------------------------------------------------------------------------------------ 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| | | | | | | | | ------------------------------------------------------------------------------------------------------------------------------------ 16 NGC6752E2 ^ ^ ^ XI-OFF=+10.0' +/- 0.1', ETA-OFF=0.0' +/- 0.1', FROM 14 ------------------------------------------------------------------------------------------------------------------------------------ 17 NGC6752W2 ^ ^ ^ XI-OFF=-10.0' +/- 0.1', ETA-OFF=0.0' +/- 0.1', FROM 14 ------------------------------------------------------------------------------------------------------------------------------------ 18 NGC7078 M15 ^ ^ ^ RA=21H 27M 33.35S +/- 0.1S, DEC=+11D 56' 48.8" +/- 1" ------------------------------------------------------------------------------------------------------------------------------------ 22 NGC7099 M30 ^ ^ ^ RA=21H 37M 31.64S +/- 0.1S, DEC=-23D 24' 23.1" +/- 1" ------------------------------------------------------------------------------------------------------------------------------------ 26 NGC6205 M13 ^ ^ ^ RA=16H 39M 54.19S +/- 0.1S, DEC=+36D 33' 16.3" +/- 1" ------------------------------------------------------------------------------------------------------------------------------------ 27 NGC6205E1 ^ ^ ^ XI-OFF=+7.6' +/- 0.1', ETA-OFF=0.0' +/- 0.1', FROM 26 ------------------------------------------------------------------------------------------------------------------------------------ 28 NGC6205E2 ^ ^ ^ XI-OFF=+15.2' +/- 0.1', ETA-OFF=0.0' +/- 0.1', FROM 26 ------------------------------------------------------------------------------------------------------------------------------------ 29 NGC6205W2 ^ ^ ^ XI-OFF=-15.2' +/- 0.1', ETA-OFF=0.0' +/- 0.1', FROM 26 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 2945c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 DEFINE # PC IMAGE ALL F555W 5479 CR-SPLIT=NO 1 100S # POS TARG +5.00, PC10 PRE-FLASH=YES +5.00 NON-INT / 1-10 ------------------------------------------------------------------------------------------------------------------------------------ 2 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ SAME ORIENT FOR 2- 10 AS 1 POS TARG +0.70, +0.70 ------------------------------------------------------------------------------------------------------------------------------------ 3 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ POS TARG +9.30, +0.70 ------------------------------------------------------------------------------------------------------------------------------------ 4 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ POS TARG +9.30, +9.30 ------------------------------------------------------------------------------------------------------------------------------------ 5 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ POS TARG +0.70, +9.30 ------------------------------------------------------------------------------------------------------------------------------------ 6 ^ ^ ^ ^ ^ F791W 8537 ^ ^ ^ ^ POS TARG +2.85, +5.00 ------------------------------------------------------------------------------------------------------------------------------------ 7 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ POS TARG +5.00, +2.85 ------------------------------------------------------------------------------------------------------------------------------------ 8 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ POS TARG +7.15, +5.00 ------------------------------------------------------------------------------------------------------------------------------------ 9 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ POS TARG +5.00, +7.15 ------------------------------------------------------------------------------------------------------------------------------------ 10 DEFINE # PC IMAGE ALL F791W 8537 CR-SPLIT=NO 1 100S # POS TARG +13.60, PC10 PRE-FLASH=YES +13.60 ------------------------------------------------------------------------------------------------------------------------------------ 10.01 DEFINE # PC IMAGE ALL F555W 5479 CR-SPLIT=NO 1 100S # POS TARG +5.00, PC10C PRE-FLASH=YES +5.00 CLOCKS=YES NON-INT / 10.01- 10.10 ------------------------------------------------------------------------------------------------------------------------------------ 10.02 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ SAME ORIENT FOR ^ 10.02-10.10 AS 10.01 POS TARG +0.70, +0.70 ------------------------------------------------------------------------------------------------------------------------------------ 10.03 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ POS TARG +9.30, ^ +0.70 ------------------------------------------------------------------------------------------------------------------------------------ 10.04 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ POS TARG +9.30, ^ +9.30 ------------------------------------------------------------------------------------------------------------------------------------ 10.05 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ POS TARG +0.70, ^ +9.30 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 2945c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 10.06 ^ ^ ^ ^ ^ F791W 8537 ^ ^ ^ ^ POS TARG +2.85, ^ +5.00 ------------------------------------------------------------------------------------------------------------------------------------ 10.07 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ POS TARG +5.00, ^ +2.85 ------------------------------------------------------------------------------------------------------------------------------------ 10.08 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ POS TARG +7.15, ^ +5.00 ------------------------------------------------------------------------------------------------------------------------------------ 10.09 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ POS TARG +5.00, ^ +7.15 ------------------------------------------------------------------------------------------------------------------------------------ 10.1 DEFINE # PC IMAGE ALL F791W 8537 CR-SPLIT=NO 1 100S # POS TARG +13.60, PC10C PRE-FLASH=YES +13.60 CLOCKS=YES ------------------------------------------------------------------------------------------------------------------------------------ 11 DEFINE # PC IMAGE ALL F555W 5479 CR-SPLIT=NO 1 100S # POS TARG +5.00, PC5 PRE-FLASH=YES +5.00 NON-INT / 11-15 ------------------------------------------------------------------------------------------------------------------------------------ 12 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ SAME ORIENT FOR 12 -15 AS 11 POS TARG +0.70, +0.70 ------------------------------------------------------------------------------------------------------------------------------------ 13 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ POS TARG +9.30, +0.70 ------------------------------------------------------------------------------------------------------------------------------------ 14 ^ ^ ^ ^ ^ F791W 8537 ^ ^ ^ ^ POS TARG +9.30, +9.30 ------------------------------------------------------------------------------------------------------------------------------------ 15 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ POS TARG +0.70, +9.30 ------------------------------------------------------------------------------------------------------------------------------------ 15.1 DEFINE # PC IMAGE ALL F555W 5479 CR-SPLIT=NO 1 100S # POS TARG +5.00, PC5C PRE-FLASH=YES +5.00 CLOCKS=YES NON-INT / 15.1- 15.5 ------------------------------------------------------------------------------------------------------------------------------------ 15.2 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ SAME ORIENT FOR ^ 15.2-15.5 AS 15.1 POS TARG +0.70, +0.70 ------------------------------------------------------------------------------------------------------------------------------------ 15.3 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ POS TARG +9.30, ^ +0.70 ------------------------------------------------------------------------------------------------------------------------------------ 15.4 ^ ^ ^ ^ ^ F791W 8537 ^ ^ ^ ^ POS TARG +9.30, ^ +9.30 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 2945c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 15.5 DEFINE # PC IMAGE ALL F791W 8537 CR-SPLIT=NO 1 100S # POS TARG +0.70, PC5C PRE-FLASH=YES +9.30 CLOCKS=YES ------------------------------------------------------------------------------------------------------------------------------------ 39 USE NGC6752 X0.26 3 CYCLE 3 / 39-67 PC5C ------------------------------------------------------------------------------------------------------------------------------------ 41 USE PC5 NGC6752E1 X10 3 ------------------------------------------------------------------------------------------------------------------------------------ 46 USE NGC7078 X0.26 3 PC5C ------------------------------------------------------------------------------------------------------------------------------------ 53 ^ NGC7099 X0.26 3 ------------------------------------------------------------------------------------------------------------------------------------ 67 USE NGC6752 X1.0 3 PC10C Comments: END POINT CALIBRATION AFTER LINES 16-53 ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 2945c [ 9] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations PC ^ ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ^ ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO PRE-FLASH=YES CLOCKS=YES ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GTO/AST ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 19.01 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category STELLAR POPULATIONS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements POS TARG +5.00,+5.00; NON-INT / 1-10 SAME ORIENT FOR 2-10 AS 1; POS TARG +0.70,+0.70; POS TARG +9.30,+0.70; POS TARG +9.30,+9.30; POS TARG +0.70,+9.30; POS TARG +2.85,+5.00; POS TARG +5.00,+2.85; POS TARG +7.15,+5.00; POS TARG +5.00,+7.15; POS TARG +13.60,+13.60; NON-INT / 10.01-10.10 SAME ORIENT FOR 10.02-10.10 AS 10.01; NON-INT / 11-15 SAME ORIENT FOR 12-15 AS 11; NON-INT / 15.1-15.5 SAME ORIENT FOR 15.2-15.5 AS 15.1; CYCLE 3 / 39-67 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F555W ^ F791W ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC104 47TUC NGC104E1 NGC104E2 PAL1 NGC1851 DELTA-508 NGC6656 M22 NGC6656E1 NGC6656E2 NGC6656W2 NGC6752 NGC6752E1 NGC6752E2 NGC6752W2 NGC7078 M15 NGC7099 M30 NGC6205 M13 NGC6205E1 NGC6205E2 NGC6205W2 ------------------------------------------------------------------------------------------------------------------------------------