Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 5435 Report Date: 18-Jul-95:17:23 Version: ********** Check-in Date: ********** 1.Proposal Title: THE HOT STELLAR COMPONENT IN THE CENTERS OF M31 AND M32: CYCLE 4 MEDIUM ------------------------------------------------------------------------------------ 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 Henry C. Ferguson 3470 USA (410) 338-5098 ------------------------------------------------------------------------------------ 7. Abstract We propose to construct a deep far-UV color magnitude-diagram of resolved sources in the centers of M31 and M32. These data will be used, in conjunction with spectroscopy obtained by the Hopkins Ultraviolet Telescope, to provide constraints on the mix of stars responsible for the far-UV emission in old, metal-rich stellar populations. Our inference from the existing data is that the sources resolved in Cycle-1 and 2 FOC images are mostly low-mass PAGB stars. Such stars probably produce less than 60% of the far-UV flux from M31, with the remainder coming from PEAGB, AGB -Manque, and EHB stars. Our proposed observations are deep enough to resolve PEAGB stars and AGB-Manque stars and provide the first direct evidence for these modes of stellar evolution. The relative numbers of these stars, the color of the remaining diffuse component, and the spectral energy distribution measured by HUT, will permit a precise estimate of the contribution from EHB stars. Comparison of the results from M31 and M32 will provide important insight into the differences in the evolution of the stellar populations in these two galaxies. ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 14.67 par: 14.67 10. Num targs pri: 2 par: 2 ------------------------------------------------------------------------------------ 11. Instruments requested: FOC WF/PC ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 5435 PI: Henry C. Ferguson Proposal Title: THE HOT STELLAR COMPONENT IN THE CENTERS OF M31 AND M32: CYCLE 4 MEDIUM ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Henry C. Ferguson 3470 USA Ivan R. King 1500 USA Arthur F. Davidsen 2380 USA S. Adam Stanford 1500 USA Jean-Michel Deharveng 5446 FRANCE X ------------------------------------------------------------------------------------ 3. Description of proposed observations. The FOC will be used in f/96 mode with the F175W and F320W filters and zoom mode (0.028 x 0.014 arcsec pixels) to obtain images of the centers of M31 and M32 in the far UV. The exposure times are dictated by the desire to obtain photometry to 10% accuracy for AGB-Manque stars near their peak luminosities. For an assumed reddening of E(B-V) = 0.11, this corresponds to an ST magnitude limit of 23.2 at 1750A. We have carefully considered other camera and filter combinations, and chosen the mode which gives the shortest total exposure time for the expected Cycle-4 capabilities. However, we have assumed that f/48 mode of FOC will not be available for imaging during cycle 4. If it becomes available, we may consider using it, as the shorter wavelength and good throughput of the F150W filter, combined with the larger field, makes this mode particularly efficient for our project. Parallel WFPC-2 observations are requested through the F160W filters and the F300W filters. The parallel observations are of direct relevance to the issues we are addressing with our primary observations and our observations in previous cycles. In M31 the parallel observations will sample a different portion of the bulge, with little disk contamination, but presumably with an appreciably lower metallicity than the central region. A specific prediction, which can be tested even if the observations are not terribly deep, is that PAGB stars should account for a larger fraction of the far-UV flux in this outer region than in the center. The M32 observations will be affected by M31 disk contamination, which we plan minimize by specifying an orientation range that puts the parallel exposures on the side of M32 that is away from M31. While the parallel observations are not essential for our project, they would be a valuable addition and we are well equipped to analyze them in a timely fashion. The WFPC2 observations should be scheduled so as not to reduce the exposure time available for the primary by more than 20%. If the WFPC2 observations interfere at a greater level, or make it difficult to schedule the primary observations in some other way, please contact the PI. We wish to start the observing program with a few short exposures, early in the cycle, then do the bulk of the program several months later. Motivations for this strategy are as follows: 1) to allow a test for variability among the brighter sources, 2) to evaluate the pointing position and allow time to modify the position of the later exposures if there are problems with patchy dust or source confusion, and 3) to give some early results that will allow us to test the predictions of our unscheduled cycle-3 program. Page 3 ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. The stars we propose to observe are detectable only in the UV. While these two galaxies have been observed numerous times in the ultraviolet, only HST is capabile of resolving the individual sources. The integrated spectra of M31 and M32 have been measured by IUE \acite{Johnson79; Welch 1982; Burstein 1988}. M31 was observed by by HUT \acite{Ferguson 1991 ApJ; Ferguson Davidsen 1993 ApJ}. Low -resolution far-UV images were obtained from a sounding rocket \acite{BCHHOS85} and more recently from the UIT \acite{O'Connell 1991 Stellar; O'Connell 1992 ApJ}. No resolved sources were detected in these images. Far-UV images have been taken in the last two years with HST. In the M31 F175W image \acite{King 1992 ApJ}, 137 sources were detected in the $44 \times 44\arcsec$ FOC $f/48$ field of view. Estimates from this image suggest that resolved sources provide roughly 15- 20\% of the total flux at 1750\ang. More recent images were obtained at 1500\ang with the F130LP+F150W filters \acite{Bertola92}. These images were not as deep as expected, and the field of view was $22 \times 22\arcsec$, so fewer sources were detected. Preliminary estimates from these images suggest that the resolved sources contribute a much larger proportion of the far-UV flux \acite{Bertola92}. While we expect our Cycle-3 FOC observations to resolve much of the discrepancy about the contribution of the resolved sources to the total far-UV flux, the depth of these images will be insufficient to sample the PEAGB and AGB-Manqu\'e star populations, thought from the HUT spectrum to be producing most of the far- UV flux. Deep observations with the refurbished FOC in Cycle-4 will allow such stars to be detected and the resulting color--magnitude diagram will test models for their mass and temperature distribution. For exposure time calculations, see phase-1 proposal. ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. We wish to start the observing program with a few short exposures, early in the cycle, then do the bulk of the program several months later. Motivations for this strategy are as follows: 1) to allow a test for variability among the brighter sources, 2) to evaluate the pointing position and allow time to modify the position of the later exposures if there are problems with patchy dust or source confusion, and 3) to give some early results that will allow us to test the predictions of our unscheduled cycle-3 program. The targets become visible at the begining of June. We would therefore like to schedule the first observations in June, and the later ones a few months later (the orientation requirement naturally places them in the Oct-Feb time frame). We realize that the short exposures will not have the same roll or parallel exposure positions as the later long exposures. That is acceptable. The exposure times on individual lines in the exposure log have been tuned, in consultation with Doug Van Orsow, to facilitate constructing sensible SU's for these observations. ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. See phase 1 proposal. ------------------------------------------------------------------------------------ 8. Additional comments or special requests. While observations of both galaxies are probably essential for unravelling the effects of age and metallicity on the hot star population, the M32 observations are of lower priority than M31 if any exposures must be dropped or deferred due to the demands on Cycle-4 observing time. ------------------------------------------------------------------------------------ 9. Description of previous HST work. See phase 1 proposal. ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). See phase 1 proposal. ------------------------------------------------------------------------------------ 11. Address Information Page 4 Name: HENRY C. FERGUSON Category: PI Institution: 3470 Address: SPACE TELESCOPE SCIENCE INSTITUTE 3700 SAN MARTIN DRIVE City: BALTIMORE State: MD Zip Code: 21218 Country: USA Telephone: (410) 338-5098 Telex (or e-mail): ferguson@stsci.edu ------------------------------------------------------------------------------------ Name: Category: CON Institution: Address: City: State: Zip Code: Country: Telephone: Telex (or e-mail): ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 5435 [ 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| | | | | | | | | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC224 M31 E,301,910,913 RA = 00H 42M 44.33S +/-1", 2000 EXT 1 SURF(V)=15.75 ANDROMEDA DEC = +41D 16' 08.97" +/-1" 2 F(1750)=1.9E-18 GALAXY 3 SURF-CONT-BKG(1750)=1.02E-16 Comments: FLUX 2 is ST mag = 23.2, our desired limit for 10% photometry. FLUX 3 converts the observed F175W mean background of 3.2e -3 cts/s/pix back to a flux. ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC221 M32 E,303,910 RA = 00H 42M 41.81S +/- 1", 2000 1 SURF(V)=15.77 DEC = +40D 51' 57.91" +/- 1" 2 F(1750)=1.9E-18 3 SURF-CONT-BKG(1750)=9.2E-17 Comments: FLUX 2 is ST mag = 23.2, our desired limit for 10% photometry. FLUX 3 converts the observed F175W mean background of 2.9e -3 cts/s/pix back to a flux. ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC224-POS2 E,301,913,912 XI-OFF = +0", 2000 EXT M31 ETA-OFF = +0", ANDROMEDA REGION, GALAXY R=400", FROM 1 ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC221-POS2 E,303 XI-OFF = +0", 2000 EXT M32 ETA-OFF = +0", REGION, R=400", FROM 2 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5435 [ 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 NGC224 FOC/96 IMAGE 512X102 F320W PIXEL=50X25 1 1800S 1 CYCLE 4 4 AT 1-MAR-1994 +/- 122D GROUP 1-4 WITHIN 30D Comments: AT req. is to allow test for variability, and to allow time to modify pointing posistions of 9-16 if necessary to avoid dust or confusion. Please schedule as early as possible (e.g. February or March). ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC224 FOC/96 IMAGE 512X102 F175W PIXEL=50X25 1 2400S 3 CYCLE 4 4 AT 1-MAR-1994 +/- 122D SAME ORIENT FOR 2 AS 1 Comments: AT req. is to allow test for variability, and to allow time to modify pointing posistions of 9-16 if necessary to avoid dust or confusion. Please schedule as early as possible (e.g. February or March). ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC221 FOC/96 IMAGE 512X102 F320W PIXEL=50X25 1 1800S 2 CYCLE 4 4 AT 1-MAR-1994 +/- 122D Comments: AT req. is to allow test for variability, and to allow time to modify pointing posistions of 9-16 if necessary to avoid dust or confusion. Please schedule as early as possible (e.g. February or March). ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC221 FOC/96 IMAGE 512X102 F175W PIXEL=50X25 1 2400S 4 CYCLE 4 4 AT 1-MAR-1994 +/- 122D SAME ORIENT FOR 4 AS 3 Comments: AT req. is to allow test for variability, and to allow time to modify pointing posistions of 9-16 if necessary to avoid dust or confusion. Please schedule as early as possible (e.g. February or March). ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5435 [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC224-POS2 WFPC2 IMAGE PC1 F255W CR-SPLIT=0.5 1 1400S 10 CYCLE 4 CR- PAR TOLERANCE=0.0 Comments: Exposure time, number of exposures, and cosmic ray split should be adjusted as necessary so as not to interfere with scheduling the primary. Parallel with 1. ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC224-POS2 WFPC2 IMAGE PC1 F160BW CR-SPLIT=0.5 1 2000S 10 CYCLE 4 CR- PAR TOLERANCE=0.0 Comments: Exposure time, number of exposures, and cosmic ray split should be adjusted as necessary so as not to interfere with scheduling the primary. Parallel with 2 ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC221-POS2 WFPC2 IMAGE PC1 F255W CR-SPLIT=0.5 1 1400S 10 CYCLE 4 CR- PAR TOLERANCE=0.0 Comments: Exposure time, number of exposures, and cosmic ray split should be adjusted as necessary so as not to interfere with scheduling the primary. Parallel with 3. ------------------------------------------------------------------------------------------------------------------------------------ 8 NGC221-POS2 WFPC2 IMAGE PC1 F160BW CR-SPLIT=0.5 1 2000S 10 CYCLE 4 CR- PAR TOLERANCE=0.0 Comments: Exposure time, number of exposures, and cosmic ray split should be adjusted as necessary so as not to interfere with scheduling the primary. Parallel with 4 ------------------------------------------------------------------------------------------------------------------------------------ 9 NGC224 FOC/96 IMAGE 512X102 F175W PIXEL=50X25 1 2400S 3 CYCLE 4 4 ORIENT 83D +/- 44D GROUP 9-12.1 WITHIN 30D Comments: ORIENT requested to put WFPC2 in regions with little dust & gas. If this makes scheduling too difficult, ORIENT may be ignored; SAME ORIENT requirements should be met if at all possible. ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5435 [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 9.1 NGC224 FOC/96 IMAGE 512X102 F175W PIXEL=50X25 1 3000S 3 CYCLE 4 4 SAME POS FOR 9.1 AS 9 Comments: ORIENT requested to put WFPC2 in regions with little dust & gas. If this makes scheduling too difficult, ORIENT may be ignored; SAME ORIENT requirements should be met if at all possible. ------------------------------------------------------------------------------------------------------------------------------------ 9.2 NGC224 FOC/96 IMAGE 512X102 F175W PIXEL=50X25 2 3000S 3 CYCLE 4 4 SAME ORIENT FOR 9.2 AS 9 POS TARG +0.05, +0.225 Comments: ORIENT requested to put WFPC2 in regions with little dust & gas. If this makes scheduling too difficult, ORIENT may be ignored; SAME ORIENT requirements should be met if at all possible. ------------------------------------------------------------------------------------------------------------------------------------ 9.3 NGC224 FOC/96 IMAGE 512X102 F175W PIXEL=50X25 2 3000S 3 CYCLE 4 4 SAME ORIENT FOR 9.3 AS 9 POS TARG +0.275, +0.175 Comments: ORIENT requested to put WFPC2 in regions with little dust & gas. If this makes scheduling too difficult, ORIENT may be ignored; SAME ORIENT requirements should be met if at all possible. ------------------------------------------------------------------------------------------------------------------------------------ 10 NGC224 FOC/96 IMAGE 512X102 F275W PIXEL=50X25 1 2400S 1 CYCLE 4 4 SAME ORIENT FOR 10.0 AS 9 POS TARG +0.225, - 0.05 Comments: SAME ORIENT requirement is important. ------------------------------------------------------------------------------------------------------------------------------------ 10.1 NGC224 FOC/96 IMAGE 512X102 F275W PIXEL=50X25 2 3000S 1 CYCLE 4 4 SAME POS FOR 10.1 AS 10 POS TARG +0.225, - 0.05 Comments: SAME ORIENT requirement is important. ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5435 [ 9] ------------------------------------------------------------------------------------------------------------------------------------ 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 ------------------------------------------------------------------------------------------------------------------------------------ 11 NGC221 FOC/96 IMAGE 512X102 F175W PIXEL=50X25 1 2400S 4 CYCLE 4 4 ORIENT 83D +/- 45D Comments: ORIENT requested to keep WFPC2 away from M31 disk. If this makes scheduling too difficult, ORIENT may be ignored; SAME ORIENT requirements should be met if at all possible. ------------------------------------------------------------------------------------------------------------------------------------ 11.1 NGC221 FOC/96 IMAGE 512X102 F175W PIXEL=50X25 1 3000S 4 CYCLE 4 4 SAME POS FOR 11.1 AS 11 Comments: ORIENT requested to keep WFPC2 away from M31 disk. If this makes scheduling too difficult, ORIENT may be ignored; SAME ORIENT requirements should be met if at all possible. ------------------------------------------------------------------------------------------------------------------------------------ 11.2 NGC221 FOC/96 IMAGE 512X102 F175W PIXEL=50X25 2 3000S 4 CYCLE 4 4 SAME ORIENT FOR 11.2 AS 11 POS TARG +0.05, +0.225 Comments: ORIENT requested to keep WFPC2 away from M31 disk. If this makes scheduling too difficult, ORIENT may be ignored; SAME ORIENT requirements should be met if at all possible. ------------------------------------------------------------------------------------------------------------------------------------ 11.3 NGC221 FOC/96 IMAGE 512X102 F175W PIXEL=50X25 1 2400S 4 CYCLE 4 4 SAME ORIENT FOR 11.3 AS 11 POS TARG +0.275, +0.175 Comments: ORIENT requested to keep WFPC2 away from M31 disk. If this makes scheduling too difficult, ORIENT may be ignored; SAME ORIENT requirements should be met if at all possible. ------------------------------------------------------------------------------------------------------------------------------------ 12 NGC221 FOC/96 IMAGE 512X102 F275W PIXEL=50X25 1 3000S 2 CYCLE 4 4 SAME POS FOR 12 AS 11.3 POS TARG +0.275, +0.175 Comments: SAME ORIENT requirement is important. ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5435 [ 10] ------------------------------------------------------------------------------------------------------------------------------------ 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 ------------------------------------------------------------------------------------------------------------------------------------ 12.1 NGC221 FOC/96 IMAGE 512X102 F275W PIXEL=50X25 2 3000S 2 CYCLE 4 4 SAME ORIENT FOR 12.1 AS 11 POS TARG +0.225, - 0.05 Comments: SAME ORIENT requirement is important. ------------------------------------------------------------------------------------------------------------------------------------ 13 NGC224-POS2 WFPC2 IMAGE PC1 F300W CR-SPLIT=NO 2 1200S 10 CYCLE 4 PAR Comments: Exposure time, number of exposures, and cosmic ray split should be adjusted as necessary so as not to interfere with scheduling the primary. Parallel with 9 ------------------------------------------------------------------------------------------------------------------------------------ 13.1 NGC224-POS2 WFPC2 IMAGE PC1 F300W CR-SPLIT=NO 4 1500S 10 CYCLE 4 PAR Comments: Exposure time, number of exposures, and cosmic ray split should be adjusted as necessary so as not to interfere with scheduling the primary. Parallel with 9.1 ------------------------------------------------------------------------------------------------------------------------------------ 13.2 NGC224-POS2 WFPC2 IMAGE PC1 F300W CR-SPLIT=NO 4 1500S 10 CYCLE 4 PAR Comments: Exposure time, number of exposures, and cosmic ray split should be adjusted as necessary so as not to interfere with scheduling the primary. Parallel with 9.2 ------------------------------------------------------------------------------------------------------------------------------------ 13.3 NGC224-POS2 WFPC2 IMAGE PC1 F300W CR-SPLIT=NO 2 1500S 10 CYCLE 4 PAR Comments: Exposure time, number of exposures, and cosmic ray split should be adjusted as necessary so as not to interfere with scheduling the primary. Parallel with 9.3 ------------------------------------------------------------------------------------------------------------------------------------ 14 NGC224-POS2 WFPC2 IMAGE PC1 F300W CR-SPLIT=NO 2 1200S 10 CYCLE 4 PAR Comments: Exposure time, number of exposures, and cosmic ray split should be adjusted as necessary so as not to interfere with scheduling the primary. Parallel with 10 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5435 [ 11] ------------------------------------------------------------------------------------------------------------------------------------ 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 ------------------------------------------------------------------------------------------------------------------------------------ 14.1 NGC224-POS2 WFPC2 IMAGE PC1 F300W CR-SPLIT=NO 4 1500S 10 CYCLE 4 PAR Comments: Exposure time, number of exposures, and cosmic ray split should be adjusted as necessary so as not to interfere with scheduling the primary. Parallel with 10.1 ------------------------------------------------------------------------------------------------------------------------------------ 15 NGC221-POS2 WFPC2 IMAGE PC1 F300W CR-SPLIT=NO 2 1200S 10 CYCLE 4 PAR Comments: Exposure time, number of exposures, and cosmic ray split should be adjusted as necessary so as not to interfere with scheduling the primary. Parallel with 11 ------------------------------------------------------------------------------------------------------------------------------------ 15.1 NGC221-POS2 WFPC2 IMAGE PC1 F300W CR-SPLIT=NO 2 1500S 10 CYCLE 4 PAR Comments: Exposure time, number of exposures, and cosmic ray split should be adjusted as necessary so as not to interfere with scheduling the primary. Parallel with 11.1 ------------------------------------------------------------------------------------------------------------------------------------ 15.2 NGC221-POS2 WFPC2 IMAGE PC1 F300W CR-SPLIT=NO 4 1500S 10 CYCLE 4 PAR Comments: Exposure time, number of exposures, and cosmic ray split should be adjusted as necessary so as not to interfere with scheduling the primary. Parallel with 11.2 ------------------------------------------------------------------------------------------------------------------------------------ 15.3 NGC221-POS2 WFPC2 IMAGE PC1 F300W CR-SPLIT=NO 2 1200S 10 CYCLE 4 PAR Comments: Exposure time, number of exposures, and cosmic ray split should be adjusted as necessary so as not to interfere with scheduling the primary. Parallel with 11.3 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5435 [ 12] ------------------------------------------------------------------------------------------------------------------------------------ 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 ------------------------------------------------------------------------------------------------------------------------------------ 16 NGC221-POS2 WFPC2 IMAGE PC1 F300W CR-SPLIT=NO 2 1500S 10 CYCLE 4 PAR Comments: Exposure time, number of exposures, and cosmic ray split should be adjusted as necessary so as not to interfere with scheduling the primary. Parallel with 12 ------------------------------------------------------------------------------------------------------------------------------------ 16.1 NGC221-POS2 WFPC2 IMAGE PC1 F300W CR-SPLIT=NO 4 1500S 10 CYCLE 4 PAR Comments: Exposure time, number of exposures, and cosmic ray split should be adjusted as necessary so as not to interfere with scheduling the primary. Parallel with 12.1 ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 5435 [ 13] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FOC/96 WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters PIXEL=50X25 CR-SPLIT=0.5 CR-TOLERANCE=0.0 CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GO ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 14.67 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category GALAXIES & CLUSTERS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category STELLAR POPULATIONS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements CYCLE 4; AT 1-MAR-1994 +/- 122D; GROUP 1-4 WITHIN 30D SAME ORIENT FOR 2 AS 1 AT 1-MAR-1994 +/- 122D SAME ORIENT FOR 4 AS 3 PAR ORIENT 83D +/- 44D; GROUP 9-12.1 WITHIN 30D SAME POS FOR 9.1 AS 9 SAME ORIENT FOR 9.2 AS 9; POS TARG +0.05, +0.225 SAME ORIENT FOR 9.3 AS 9; POS TARG +0.275, +0.175 SAME ORIENT FOR 10.0 AS 9; POS TARG +0.225, -0.05 SAME POS FOR 10.1 AS 10; ORIENT 83D +/- 45D SAME POS FOR 11.1 AS 11 SAME ORIENT FOR 11.2 AS 11; SAME ORIENT FOR 11.3 AS 11; SAME POS FOR 12 AS 11.3; SAME ORIENT FOR 12.1 AS 11; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F320W F175W F255W F160BW F275W F300W ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC224 M31 ANDROMEDA GALAXY NGC221 M32 NGC224-POS2 NGC221-POS2 ------------------------------------------------------------------------------------------------------------------------------------