Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 5464 Report Date: 18-Jul-95:17:27 Version: ********** Check-in Date: ********** 1.Proposal Title: A STUDY OF THE AGB IN LOCAL GROUP BULGE POPULATIONS ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID GALAXIES & CLUSTERS GO Sub Category STELLAR POPULATIONS ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone R. michael Rich COLUMBIA UNIVERSITY USA 212-854-6837 ------------------------------------------------------------------------------------ 7. Abstract We propose to survey the bolometric luminosities, colors, and space distribution of the most luminous asymptotic giant branch (AGB) stars in the bulges of M31, M32, and M33. We seek to discover whether the bulges of these galaxies are relatively young, of order 10 Gyr rather than 15 Gyr. We will use WFPC2 and the R, I, and F1042M (1 micron) filters. Knowing that F1042M falls on the first continuum point of M giants, we have shown that we can use 1.04 micron fluxes to reliably calculate bolometric magnitudes for these very red stars. Color information from R and I will permit (1) comparison with Galactic bulge M giants, (2) an estimate of the spread of abundance and (3) increase the accuracy of the bolometric magnitudes. Frames with the damaged HST show signs of resolution to within 3" of the M31 nucleus; Red images with the aberrated HST show a red star cluster associated with the nucleus. Ground-based studies of M32 find an intermediate-age population from spectroscopy and infrared photometry. The repaired HST should resolve stars close to the nuclei of these galaxies. We will measure bolometric luminosity functions to determine if the populations are intermediate age, and attempt to measure the abundance range for stars near the nuclei of these galaxies. If metals have been lost due to winds, theory predicts that we should see a substantial spread of abundances even near the nucleus. ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 15.05 par: 0 10. Num targs pri: 4 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: WF/PC ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 5464 PI: R. michael Rich Proposal Title: A STUDY OF THE AGB IN LOCAL GROUP BULGE POPULATIONS ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ R. Michael Rich 1770 USA Kenneth J Mighell 1770 USA Wendy Freedman 3030 USA ------------------------------------------------------------------------------------ 3. Description of proposed observations. We would like all exposures for the first epoch observation of each galaxy/GC to be taken together as one group with only interruptions due to Earth occultations (eg. GROUP 101-105 NO GAP). We would like all exposures to be made at the same position in the sky with the same telescope roll angle (eg. SAME POS 102-105 AS 101). All long exposures will be cosmic-ray split in half (CR-SPLIT=0.5). The short high-gain (ATD-GAIN=15) exposures will increase the dynamic range of the long low-gain (ATD-GAIN=7) exposures. The second epoch observations (NGC224-2, NGC221-2, NGC598-2) should follow the first epoch observations (NGC224-1, NGC221- 1, NGC598-1) in 100 +/- 15 days. ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. See answer to question 4.a. on the HST Cycle 4 proposal general form. ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. ------------------------------------------------------------------------------------ 6. Description of special calibration exposures. ------------------------------------------------------------------------------------ 8. Additional comments or special requests. ------------------------------------------------------------------------------------ 9. Description of previous HST work. See answer to question 9. on the HST Cycle 4 proposal general form. ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). See answer to question 10. on the HST Cycle 4 proposal general form. ------------------------------------------------------------------------------------ 11. Address Information Name: R. MICHAEL RICH Category: PI Institution: 1770 Address: DEPT OF ASTRONOMY BOX 42 PUPIN 538 W. 120TH ST City: NEW YORK State: NY Zip Code: 10027 Country: USA Telephone: 212-854-6837 Telex (or e-mail): RMR@CUPHYA.PHYS.COLUMBIA.EDU ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 5464 [ 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 NGC224-1 M31 E, 301 RA = 00H 42M 44.329S +/- 2000.0 V=-297 1 SURF(V) = 16.5 +/- 0.5 2.000S, DEC = +41D 16' 08.42" +/- 2.000" ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC224-2 M31 E, 301 RA = 00H 42M 44.329S +/- 2000.0 V=-297 1 SURF(V) = 16.5 +/- 0.5 2.000S, DEC = +41D 16' 08.42" +/- 2.000" ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC221-1 M32 E, 303 RA = 00H 39M 57.80S +/- 1950.0 V=-200 1 SURF(V) = 18.0 +/- 1.0 2.00S, DEC = +40D 35' 26.00" +/- 2.00" ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC221-2 M32 E, 303 RA = 00H 39M 57.80S +/- 1950.0 V=-200 1 SURF(V) = 18.0 +/- 1.0 2.00S, DEC = +40D 35' 26.00" +/- 2.00" ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC598-1 M33 E, 301 RA = 01H 33M 50.924S +/- 2000.0 V=-180 1 SURF(V) = 20.0 +/- 0.5 2.00S, DEC = +30D 39' 36.65" +/- 2.00" ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC598-2 M33 E, 301 RA = 01H 33M 50.924S +/- 2000.0 V=-180 1 SURF(V) = 20.0 +/- 0.5 2.00S, DEC = +30D 39' 36.65" +/- 2.00" ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC224-G1 D, 201 RA = 00H 30M 5.60S +/- 1950.0 V=-297 1 SURF(V) = 16.5 +/- 0.5 M31-G1 M31- 2.00S, STARCLUSTER DEC = +39D 18' 09.00" +/- 2.00" ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5464 [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 101 NGC224-1 WFPC2 IMAGE PC1 F1042M 1 1000S 14.2 1 1 CYCLE 4 / 101-405 5000S PCS MODE F / 101- 405 GROUP 101-105 NO GAP ------------------------------------------------------------------------------------------------------------------------------------ 101.2 NGC224-1 WFPC2 IMAGE PC1 F1042M 1 1000S 14.2 1 1 SAME POS FOR 101.2 5000S -105 AS 101.0 SAME ORIENT FOR 101.2-105 AS 101.0 ------------------------------------------------------------------------------------------------------------------------------------ 101.3 NGC224-1 WFPC2 IMAGE PC1 F1042M 1 1000S 14.2 1 1 5000S ------------------------------------------------------------------------------------------------------------------------------------ 101.4 NGC224-1 WFPC2 IMAGE PC1 F1042M 1 1000S 14.2 1 1 5000S ------------------------------------------------------------------------------------------------------------------------------------ 101.5 NGC224-1 WFPC2 IMAGE PC1 F1042M 1 1000S 14.2 1 1 5000S ------------------------------------------------------------------------------------------------------------------------------------ 102 NGC224-1 WFPC2 IMAGE PC1 F555W 2 400S 37.3 1 1 1600S ------------------------------------------------------------------------------------------------------------------------------------ 102.5 NGC224-1 WFPC2 IMAGE PC1 F555W 2 400S 37.3 1 1 1600S ------------------------------------------------------------------------------------------------------------------------------------ 103 NGC224-1 WFPC2 IMAGE PC1 F555W ATD-GAIN=15 2 40S 37.3 1 1 CR-SPLIT=NO 1600S ------------------------------------------------------------------------------------------------------------------------------------ 104 NGC224-1 WFPC2 IMAGE PC1 F814W 3 400S 33.8 1 1 1200S ------------------------------------------------------------------------------------------------------------------------------------ 105 NGC224-1 WFPC2 IMAGE PC1 F814W ATD-GAIN=15 2 40S 33.8 1 1 CR-SPLIT=NO 1200S ------------------------------------------------------------------------------------------------------------------------------------ 106 NGC224-2 WFPC2 IMAGE PC1 F814W 2 300S 33.8 1 1 AFTER 104 BY 100D 1200S +/- 15D ------------------------------------------------------------------------------------------------------------------------------------ 201 NGC221-1 WFPC2 IMAGE PC1 F1042M 1 1000S 13.4 1 1 GROUP 201-205 NO 3000S GAP ------------------------------------------------------------------------------------------------------------------------------------ 201.2 NGC221-1 WFPC2 IMAGE PC1 F1042M 1 1000S 13.4 1 1 SAME POS FOR 201.2 3000S -205 AS 201 SAME ORIENT FOR 201.2-205 AS 201 ------------------------------------------------------------------------------------------------------------------------------------ 201.3 NGC221-1 WFPC2 IMAGE PC1 F1042M 1 1000S 13.4 1 1 3000S ------------------------------------------------------------------------------------------------------------------------------------ 202 NGC221-1 WFPC2 IMAGE PC1 F555W 4 400S 52.0 1 1 1600S ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5464 [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 203 NGC221-1 WFPC2 IMAGE PC1 F555W ATD-GAIN=15 2 40S 52.0 1 1 CR-SPLIT=NO 1600S ------------------------------------------------------------------------------------------------------------------------------------ 204 NGC221-1 WFPC2 IMAGE PC1 F814W 3 400S 46.3 1 1 1200S ------------------------------------------------------------------------------------------------------------------------------------ 205 NGC221-1 WFPC2 IMAGE PC1 F814W ATD-GAIN=15 2 40S 46.3 1 1 CR-SPLIT=NO 1200S ------------------------------------------------------------------------------------------------------------------------------------ 206 NGC221-2 WFPC2 IMAGE PC1 F814W 2 300S 46.3 1 1 AFTER 204 BY 100D 1200S +/- 15D ------------------------------------------------------------------------------------------------------------------------------------ 301 NGC598-1 WFPC2 IMAGE PC1 F1042M 1 1000S 14.4 1 1 GROUP 301-305 NO 3000S GAP ------------------------------------------------------------------------------------------------------------------------------------ 301.2 NGC598-1 WFPC2 IMAGE PC1 F1042M 1 1000S 14.4 1 1 SAME POS FOR 301.2 3000S -305 AS 301 SAME ORIENT FOR 301.2-305 AS 301 ------------------------------------------------------------------------------------------------------------------------------------ 301.3 NGC598-1 WFPC2 IMAGE PC1 F1042M 1 1000S 14.4 1 1 3000S ------------------------------------------------------------------------------------------------------------------------------------ 302 NGC598-1 WFPC2 IMAGE PC1 F555W 2 400S 60.6 1 1 1600S ------------------------------------------------------------------------------------------------------------------------------------ 302.5 NGC598-1 WFPC2 IMAGE PC1 F555W 2 400S 60.6 1 1 1600S ------------------------------------------------------------------------------------------------------------------------------------ 303 NGC598-1 WFPC2 IMAGE PC1 F555W ATD-GAIN=15 2 40S 60.6 1 1 CR-SPLIT=NO 1600S ------------------------------------------------------------------------------------------------------------------------------------ 304 NGC598-1 WFPC2 IMAGE PC1 F814W 3 400S 53.4 1 1 1200S ------------------------------------------------------------------------------------------------------------------------------------ 305 NGC598-1 WFPC2 IMAGE PC1 F814W ATD-GAIN=15 2 40S 53.4 1 1 CR-SPLIT=NO 1200S ------------------------------------------------------------------------------------------------------------------------------------ 306 NGC598-2 WFPC2 IMAGE PC1 F814W 2 300S 53.4 1 1 AFTER 304 BY 100D 1200S +/- 15D ------------------------------------------------------------------------------------------------------------------------------------ 401 NGC224-G1 WFPC2 IMAGE PC1 F1042M 1 1000S 6.9 1 1 GROUP 401-405 NO 4000S GAP ------------------------------------------------------------------------------------------------------------------------------------ 401.2 NGC224-G1 WFPC2 IMAGE PC1 F1042M 1 1000S 6.9 1 1 SAME POS FOR 401.2 4000S -405 AS 401 SAME ORIENT FOR 401.2-405 AS 401 ------------------------------------------------------------------------------------------------------------------------------------ 401.3 NGC224-G1 WFPC2 IMAGE PC1 F1042M 1 1000S 6.9 1 1 4000S ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5464 [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 401.4 NGC224-G1 WFPC2 IMAGE PC1 F1042M 1 1000S 6.9 1 1 4000S ------------------------------------------------------------------------------------------------------------------------------------ 402 NGC224-G1 WFPC2 IMAGE PC1 F555W 2 400S 31.8 1 1 1600S ------------------------------------------------------------------------------------------------------------------------------------ 402.5 NGC224-G1 WFPC2 IMAGE PC1 F555W 2 400S 31.8 1 1 1600S ------------------------------------------------------------------------------------------------------------------------------------ 403 NGC224-G1 WFPC2 IMAGE PC1 F555W ATD-GAIN=15 2 30S 1600 1 1 CR-SPLIT=NO 750S ------------------------------------------------------------------------------------------------------------------------------------ 404 NGC224-G1 WFPC2 IMAGE PC1 F814W 2 400S 28.9 1 1 1200S ------------------------------------------------------------------------------------------------------------------------------------ 404.5 NGC224-G1 WFPC2 IMAGE PC1 F814W 1 400S 28.9 1 1 1200S ------------------------------------------------------------------------------------------------------------------------------------ 405 NGC224-G1 WFPC2 IMAGE PC1 F814W ATD-GAIN=15 2 40S 28.9 1 1 CR-SPLIT=NO 1200S ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 5464 [ 7] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ATD-GAIN=15 CR-SPLIT=NO ATD-GAIN=15 CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GO ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 15.05 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category GALAXIES & CLUSTERS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category STELLAR POPULATIONS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements CYCLE 4 / 101-405; PCS MODE F / 101-405; GROUP 101-105 NO GAP SAME POS FOR 101.2-105 AS 101.0; SAME ORIENT FOR 101.2-105 AS 101.0 AFTER 104 BY 100D +/- 15D; GROUP 201-205 NO GAP SAME POS FOR 201.2-205 AS 201; SAME ORIENT FOR 201.2-205 AS 201 AFTER 204 BY 100D +/- 15D; GROUP 301-305 NO GAP SAME POS FOR 301.2-305 AS 301; SAME ORIENT FOR 301.2-305 AS 301 AFTER 304 BY 100D +/- 15D; GROUP 401-405 NO GAP SAME POS FOR 401.2-405 AS 401; SAME ORIENT FOR 401.2-405 AS 401 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F1042M F555W F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC224-1 M31 NGC224-2 NGC221-1 M32 NGC221-2 NGC598-1 M33 NGC598-2 NGC224-G1 M31-G1 M31-STARCLUSTER ------------------------------------------------------------------------------------------------------------------------------------