9117( 28) - 10/17/02 09:22 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 9117 Version: 28 Check-in Date: 17-Oct-2002 09:20:19 1.Proposal Title: Spatially Resolved Spectroscopy of Super Star Clusters in the M82 Starbursts ------------------------------------------------------------------------------------ 2. Proposal For 3. Cycle GO 10 ------------------------------------------------------------------------------------ 4. Investigators Contact? PI: Robert O'Connell The University of Virginia CoI: Dr. Richard de Grijs Cambridge University N CoI: Professor John Gallagher III University of Wisconsin-Madison N CoI: Dr. Linda Smith University College London N ------------------------------------------------------------------------------------ 5. Abstract M82 is the prototype starburst galaxy and the nearest analogue to the star forming galaxies recently identified at high redshifts. There is good evidence that M82 has experienced multiple starburst episodes over the past ~ 800 Myr. No other galaxy affords the opportunity to study both an active starburst and the subsequent post- burst phase at such close range (3.6 Mpc) and with such a wealth of complementary data from other space and ground-based telescopes. In our Cycle 1 and 7 HST imaging programs on M82, we identified numerous super star clusters, which seem to be hallmarks of intense star formation. We propose to obtain spatially-resolved STIS spectroscopy of 20 such clusters in M82's active starburst core and also in its ``fossil'' starburst region (of age >~ 200 Myr) as a means of tracing the history of star formation and its propagation. With the spatially-resolved spectra, we will be able to study the internal structure of the clusters, evidence for internal mass segregation, their interaction with their surroundings (including M82's superwind), and the character of the bright, diffuse non-cluster populations. ------------------------------------------------------------------------------------ 9117( 28) - 10/17/02 09:22 - [ 2] Observations Description ------------------------ Need for HST This program could not be carried out with ground-based spectrographs for two reasons. First, an important goal is to study gradients and differential characteristics within and near our targets, most of which show evidence of structure on 0.1" (1.8 pc) scales. The full-width-half-maxima of most of our targets are ~ 0.3-0.4". Ground-based spectra are already available for clusters F and L; however the poor spatial resolution prevented study of their internal structure. Region A is yet more complex and highly structured than these individual clusters (Fig. 1). Second, the targets are superposed on very bright backgrounds. Both regions A and B have background surface brightnesses Mu(V) ~ 17-18, mag arcsec^-2, and ground- based seeing (>~ 0.5") would cause serious contamination of the data. Simulations of the effects of ground-based seeing using our HST images show that the bright, highly variable background would significantly affect ground-based spectroscopy, even of the brightest sources in the field. Quantitatively, the net effect on the brightest sources in the M82 B field is to produce ~ 40 background light. The effects on the fainter clusters are yet more serious. Spectroscopy, CVZ Utilization, & Exposure Estimates We have good astrometry for all targets from HST and ground- based data. We will orient the spectrograph slit to pick up at least two targets of interest in each pointing (and up to 8 in region A). In most cases, the two targets are separated by less than 6". Figure 1 shows two possible slit settings for our region A samples. Because of the consequent ORIENT requirements, we cannot (according to Sec. 4.1 in the Call for Proposals) take advantage of the fact that M82 lies in the Continuous Viewing Zone (CVZ). We plan to use the 52" * 0.1" slit on the clusters, with a resolution of 1.8 pc in M82 perpendicular to the dispersion direction. This takes nearly full advantage of HST's spatial resolution and yields the spectral resolution (5.4 A for extended sources) in the blue which is necessary to perform good spectral synthesis on absorption line spectra. Three grating settings will be used: G430L to cover the blue spectral region from 3000 to 5700 A (primarily absorption lines and the Balmer jump); G750M centered at 6768 A to cover the HAlpha-[N II]-[S II] emission line region; and G750M centered at 8561 A to cover the infrared Ca II triplet and Paschen absorption lines. Spectral resolution for the two G750M settings will be 1.1 A. For exposure estimates with the STIS Exposure Time Calculator we used sizes and V or I-band fluxes taken from our WFPC2 images. We treat the clusters as extended sources with characteristic diameters of 0.3". Based on the colors, we adopted for the region B1 and B2 clusters spectral energy distributions corresponding to a 500 Myr-old population. For F and L, we adopted 60 Myr. For region A, we adopted 10 Myr. Adopted extinction values (A_V, mags) were 0.6, 4.0, and 2.2, respectively. Our S/N requirements are driven by our experience with spectral synthesis techniques. We require a mean S/N of ~ 25-40 per spectral resolution element for 3800-4800 A and lower values ~10 in the red. We find that the blue G430L spectra will require 5400 sec (2 orbits) of integration but that 2700 sec (1 orbit) will suffice for each G750M setting. Therefore, 4 orbits are needed per cluster pointing, including overhead. Spectral Synthesis & Emission Line Analysis To estimate ages and metallicities for the star clusters, we will use spectral synthesis techniques like those described in citemo96 and citegs99, in which optimized fits of theoretical model cluster spectra are made to the data. Spectroscopic values will be considerably more reliable than the available crude estimates based on broad-band colors. Our earlier experience with these methods suggests that a formal age uncertainty of about 30% will be typical Dating reliability is strongly affected by S/N, spectral resolution, and wavelength coverage---which have therefore shaped our observing requirements. The most serious difficulty is dust reddening of the clusters, which varies from place to place within M82. Age estimates can be made in the presence of 9117( 28) - 10/17/02 09:22 - [ 3] large reddening as long as the spectra contain strong spectral features. For this reason, the blue region 3500-5500 A, which includes the Balmer jump, the higher Balmer absorption lines, He I, Ca II, and several other metallic features in systems with ages 10-1000 Myr is of critical importance. The Ca II infrared triplet (8500-8700 A) is an important signature of evolved supergiants and luminous giants and provides additional age constraints. It will be especially useful for the more heavily reddened objects. Age dating of very young clusters (< 10 Myr), which are probably present within the M82 A complex, could be better done at far-UV wavelengths, but this is precluded for M82 because of the extinction. However, our spectra should distinguish < 10 Myr-old clusters from older ones. The signatures of ~ 5 Myr-old Wolf Rayet stars might be present in some cases in the characteristic broad feature centered on He II 4686 Angstrom. We will examine our spectra for evidence of anomalies, such as those claimed in NGC 1275, which might be related to initial mass functions which are abnormally flat or truncated. The well-known ``age-metallicity'' degeneracy is a less serious issue for objects with ages < 1000 Myr than for older ones. However, by the same token, our spectra will provide only fair limits on stellar metallicity. With data of this quality, metalliticies can be determined within about +/- 0.15 dex. In sources without line emission, the G750M/6768 spectra will yield additional constraints on ages through H-alpha absorption line strengths. Where line emission is present (e.g., region A), we will obtain 0.1" resolution kinematical profiles with ~ 5 km/s velocity resolution. These provide information about line-of-sight distributions of material within the galaxy, the character of intra-cluster and external gas flows, and possibly cluster masses. The presence of strong [S II] is a signature of shock waves. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 9117( 28) - 10/17/02 09:22 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 M82-B1- EXT-CLUSTER, STAR RA=09H 56M 3.342S +/- 0.3", 2000.0 V = 17.9+/-0.2 CLUS1+2 FORMING REGION, EXT- DEC=69D 41' 12.201" +/- 0.3", B-V = 0.63+/-0.02 MEDIUM, STAR FORMING PLATE-ID=01L2 REGION Coordinate Source: HST_IMAGE 2 M82-B2- EXT-CLUSTER, STAR RA=09H 55M 54.545S +/- 0.3", 2000.0 V = 17.9+/-0.2 CLUS1+3 FORMING REGION, EXT- DEC=69D 41' 1.623" +/- 0.3", B-V = 1.14+/-0.02 MEDIUM, STAR FORMING PLATE-ID=01L2 REGION Coordinate Source: HST_IMAGE 3 M82-A-POS1 EXT-CLUSTER, STAR RA=09H 55M 53.420S +/- 0.3", 2000.0 V = 19.2+/-0.2 FORMING REGION, EXT- DEC=69D 40' 51.084" +/- 0.3", MEDIUM, STAR FORMING PLATE-ID=01L2 REGION Coordinate Source: HST_IMAGE 5 M82-F+L EXT-CLUSTER, STAR RA=09H 55M 47.012S +/- 0.3", J2000 V = 15.8+/-0.2 FORMING REGION, EXT- DEC=69D 40' 42.256" +/- 0.3", B-V = 1.07+/-0.02 MEDIUM, STAR FORMING PLATE-ID=01L2 REGION Coordinate Source: HST_IMAGE 9117( 28) - 10/17/02 09:22 - [ 5] Visit: 01 Visit Priority: Visit Requirements: ORIENT 90D TO 96D ORIENT 270D TO 276D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 M82-B1-CLUS STIS/C ACQ F28X50L MIRROR 1 15.0 S GS ACQ SCENARIO SINGLE 1+2 CD P ------------------------------------------------------------------------------------------------------------------------------------ 20 M82-B1-CLUS STIS/C ACQ/PEA 52X0.1 MIRROR 1 15.0 S 1+2 CD K ------------------------------------------------------------------------------------------------------------------------------------ 30 M82-B1-CLUS STIS/C ACCUM 52X0.1 G750M 8561 CR-SPLIT=2 1 29.5 M END ORBIT 1+2 CD ------------------------------------------------------------------------------------------------------------------------------------ 33 M82-B1-CLUS STIS/C ACQ/PEA 52X0.1 MIRROR 1 15.0 S 1+2 CD K ------------------------------------------------------------------------------------------------------------------------------------ 35 M82-B1-CLUS STIS/C ACCUM 52X0.1 G750M 8561 CR-SPLIT=NO 1 13 M 1+2 CD ------------------------------------------------------------------------------------------------------------------------------------ 40 CCDFLAT STIS/C ACCUM 52X0.1 G750M 8561 2 DEF CD ------------------------------------------------------------------------------------------------------------------------------------ 50 M82-B1-CLUS STIS/C ACCUM 52X0.1 G750M 6768 CR-SPLIT=NO 1 13 M END ORBIT 1+2 CD ------------------------------------------------------------------------------------------------------------------------------------ 53 M82-B1-CLUS STIS/C ACQ/PEA 52X0.1 MIRROR 1 15.0 S 1+2 CD K ------------------------------------------------------------------------------------------------------------------------------------ 55 M82-B1-CLUS STIS/C ACCUM 52X0.1 G750M 6768 CR-SPLIT=2 1 23.5 M 1+2 CD ------------------------------------------------------------------------------------------------------------------------------------ 60 M82-B1-CLUS STIS/C ACCUM 52X0.1 G430L 4300 CR-SPLIT=NO 1 14.5 M END ORBIT 1+2 CD ------------------------------------------------------------------------------------------------------------------------------------ 63 M82-B1-CLUS STIS/C ACQ/PEA 52X0.1 MIRROR 1 15.0 S 1+2 CD K ------------------------------------------------------------------------------------------------------------------------------------ 64 M82-B1-CLUS STIS/C ACCUM 52X0.1 G430L 4300 CR-SPLIT=NO 1 14.5 M END ORBIT MAX DUR 1+2 CD ------------------------------------------------------------------------------------------------------------------------------------ 65 M82-B1-CLUS STIS/C ACCUM 52X0.1 G430L 4300 CR-SPLIT=2 1 26 M MAX DUR 1+2 CD ------------------------------------------------------------------------------------------------------------------------------------ 9117( 28) - 10/17/02 09:22 - [ 6] Visit: 02 Visit Priority: Visit Requirements: ORIENT 94D TO 100D ORIENT 274D TO 280D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 M82-B2-CLUS STIS/C ACQ F28X50L MIRROR 1 15.0 S GS ACQ SCENARIO SINGLE 1+3 CD P ------------------------------------------------------------------------------------------------------------------------------------ 20 M82-B2-CLUS STIS/C ACQ/PEA 52X0.1 MIRROR 1 15.0 S 1+3 CD K ------------------------------------------------------------------------------------------------------------------------------------ 30 M82-B2-CLUS STIS/C ACCUM 52X0.1 G750M 8561 CR-SPLIT=2 1 29.5 M END ORBIT 1+3 CD ------------------------------------------------------------------------------------------------------------------------------------ 33 M82-B2-CLUS STIS/C ACQ/PEA 52X0.1 MIRROR 1 15.0 S 1+3 CD K ------------------------------------------------------------------------------------------------------------------------------------ 35 M82-B2-CLUS STIS/C ACCUM 52X0.1 G750M 8561 CR-SPLIT=NO 1 13 M 1+3 CD ------------------------------------------------------------------------------------------------------------------------------------ 40 CCDFLAT STIS/C ACCUM 52X0.1 G750M 8561 2 DEF CD ------------------------------------------------------------------------------------------------------------------------------------ 50 M82-B2-CLUS STIS/C ACCUM 52X0.1 G750M 6768 CR-SPLIT=NO 1 13 M END ORBIT 1+3 CD ------------------------------------------------------------------------------------------------------------------------------------ 53 M82-B2-CLUS STIS/C ACQ/PEA 52X0.1 MIRROR 1 15.0 S 1+3 CD K ------------------------------------------------------------------------------------------------------------------------------------ 55 M82-B2-CLUS STIS/C ACCUM 52X0.1 G750M 6768 CR-SPLIT=2 1 23.5 M 1+3 CD ------------------------------------------------------------------------------------------------------------------------------------ 60 M82-B2-CLUS STIS/C ACCUM 52X0.1 G430L 4300 CR-SPLIT=NO 1 14.5 M END ORBIT 1+3 CD ------------------------------------------------------------------------------------------------------------------------------------ 63 M82-B2-CLUS STIS/C ACQ/PEA 52X0.1 MIRROR 1 15.0 S 1+3 CD K ------------------------------------------------------------------------------------------------------------------------------------ 64 M82-B2-CLUS STIS/C ACCUM 52X0.1 G430L 4300 CR-SPLIT=NO 1 14.5 M MAX DUR END ORBIT 1+3 CD ------------------------------------------------------------------------------------------------------------------------------------ 65 M82-B2-CLUS STIS/C ACCUM 52X0.1 G430L 4300 CR-SPLIT=2 1 26 M MAX DUR 1+3 CD ------------------------------------------------------------------------------------------------------------------------------------ 9117( 28) - 10/17/02 09:22 - [ 7] Visit: 03 Visit Priority: Visit Requirements: ORIENT 63.5D TO 75.5D ORIENT 243.5D TO 255.5D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 M82-F+L STIS/C ACQ F28X50L MIRROR 1 5.0 S GS ACQ SCENARIO SINGLE CD P ------------------------------------------------------------------------------------------------------------------------------------ 20 M82-F+L STIS/C ACQ/PEA 52X0.1 MIRROR 1 5.0 S CD K ------------------------------------------------------------------------------------------------------------------------------------ 30 M82-F+L STIS/C ACCUM 52X0.1 G750L 7751 CR-SPLIT=3 1 35.0 M CD ------------------------------------------------------------------------------------------------------------------------------------ 35 CCDFLAT STIS/C ACCUM 52X0.1 G750L 7751 2 DEF END ORBIT CD ------------------------------------------------------------------------------------------------------------------------------------ 40 M82-F+L STIS/C ACQ/PEA 52X0.1 MIRROR 1 5.0 S CD K ------------------------------------------------------------------------------------------------------------------------------------ 42 M82-F+L STIS/C ACCUM 52X0.1 G750L 7751 CR-SPLIT=4 1 36.0 M POS TARG 0.0,-0.6 CD ------------------------------------------------------------------------------------------------------------------------------------ 45 CCDFLAT STIS/C ACCUM 52X0.1 G750L 7751 2 DEF END ORBIT CD ------------------------------------------------------------------------------------------------------------------------------------ 50 M82-F+L STIS/C ACQ/PEA 52X0.1 MIRROR 1 5.0 S CD K ------------------------------------------------------------------------------------------------------------------------------------ 52 M82-F+L STIS/C ACCUM 52X0.1 G750L 7751 CR-SPLIT=4 1 36.0 M POS TARG 0.0,-1.2 CD ------------------------------------------------------------------------------------------------------------------------------------ 55 CCDFLAT STIS/C ACCUM 52X0.1 G750L 7751 2 DEF END ORBIT CD ------------------------------------------------------------------------------------------------------------------------------------ 60 M82-F+L STIS/C ACQ/PEA 52X0.1 MIRROR 1 5.0 S CD K ------------------------------------------------------------------------------------------------------------------------------------ 62 M82-F+L STIS/C ACCUM 52X0.1 G750L 7751 CR-SPLIT=4 1 36.0 M POS TARG 0.0, 0.6 CD ------------------------------------------------------------------------------------------------------------------------------------ 65 CCDFLAT STIS/C ACCUM 52X0.1 G750L 7751 2 DEF END ORBIT CD ------------------------------------------------------------------------------------------------------------------------------------ 9117( 28) - 10/17/02 09:22 - [ 8] Visit: 04 Visit Priority: Visit Requirements: ORIENT 83D TO 95D ORIENT 263D TO 275D GROUP 04, 05 WITHIN 60 D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 M82-A-POS1 STIS/C ACQ F28X50L MIRROR 1 20.0 S GS ACQ SCENARIO SINGLE CD P ------------------------------------------------------------------------------------------------------------------------------------ 12 M82-A-POS1 STIS/C ACQ/PEA 52X0.1 MIRROR 1 20.0 S CD K ------------------------------------------------------------------------------------------------------------------------------------ 14 M82-A-POS1 STIS/C ACCUM 52X0.1 G750M 6581 CR-SPLIT=2 1 22 M CD ------------------------------------------------------------------------------------------------------------------------------------ 16 M82-A-POS1 STIS/C ACCUM 52X0.1 G750M 6581 CR-SPLIT=NO 1 11 M POS TARG 0.0,-0.6 END CD ORBIT ------------------------------------------------------------------------------------------------------------------------------------ 20 M82-A-POS1 STIS/C ACQ/PEA 52X0.1 MIRROR 1 20.0 S CD K ------------------------------------------------------------------------------------------------------------------------------------ 22 M82-A-POS1 STIS/C ACCUM 52X0.1 G750M 6581 CR-SPLIT=2 1 26 M POS TARG 0.0,-1.2 CD ------------------------------------------------------------------------------------------------------------------------------------ 24 M82-A-POS1 STIS/C ACCUM 52X0.1 G750M 6581 CR-SPLIT=NO 1 13 M POS TARG 0.0, 0.6 END CD ORBIT ------------------------------------------------------------------------------------------------------------------------------------ 30 M82-A-POS1 STIS/C ACQ/PEA 52X0.1 MIRROR 1 20.0 S CD K ------------------------------------------------------------------------------------------------------------------------------------ 32 M82-A-POS1 STIS/C ACCUM 52X0.1 G430L 4300 CR-SPLIT=2 1 26 M CD ------------------------------------------------------------------------------------------------------------------------------------ 34 M82-A-POS1 STIS/C ACCUM 52X0.1 G430L 4300 CR-SPLIT=NO 1 13 M POS TARG 0.0,-0.6 END CD ORBIT ------------------------------------------------------------------------------------------------------------------------------------ 40 M82-A-POS1 STIS/C ACQ/PEA 52X0.1 MIRROR 1 20.0 S CD K ------------------------------------------------------------------------------------------------------------------------------------ 42 M82-A-POS1 STIS/C ACCUM 52X0.1 G430L 4300 CR-SPLIT=2 1 26 M POS TARG 0.0,-1.2 CD ------------------------------------------------------------------------------------------------------------------------------------ 44 M82-A-POS1 STIS/C ACCUM 52X0.1 G430L 4300 CR-SPLIT=NO 1 13 M POS TARG 0.0,-1.8 END CD ORBIT ------------------------------------------------------------------------------------------------------------------------------------ 9117( 28) - 10/17/02 09:22 - [ 9] Visit: 05 Visit Priority: Visit Requirements: SAME ORIENT AS 04 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 M82-A-POS1 STIS/C ACQ F28X50L MIRROR 1 20.0 S GS ACQ SCENARIO SINGLE CD P ------------------------------------------------------------------------------------------------------------------------------------ 12 M82-A-POS1 STIS/C ACQ/PEA 52X0.1 MIRROR 1 20.0 S CD K ------------------------------------------------------------------------------------------------------------------------------------ 14 M82-A-POS1 STIS/C ACCUM 52X0.1 G430L 4300 CR-SPLIT=2 1 22 M POS TARG 0.0, 0.6 CD ------------------------------------------------------------------------------------------------------------------------------------ 16 M82-A-POS1 STIS/C ACCUM 52X0.1 G430L 4300 CR-SPLIT=NO 1 11 M POS TARG 0.0, 1.2 END CD ORBIT ------------------------------------------------------------------------------------------------------------------------------------ 20 M82-A-POS1 STIS/C ACQ/PEA 52X0.1 MIRROR 1 20.0 S CD K ------------------------------------------------------------------------------------------------------------------------------------ 22 M82-A-POS1 STIS/C ACCUM 52X0.1 G430L 4300 CR-SPLIT=2 1 26 M POS TARG 0.0, 1.8 CD ------------------------------------------------------------------------------------------------------------------------------------ 24 M82-A-POS1 STIS/C ACCUM 52X0.1 G430L 4300 CR-SPLIT=NO 1 13 M END ORBIT CD ------------------------------------------------------------------------------------------------------------------------------------ 30 M82-A-POS1 STIS/C ACQ/PEA 52X0.1 MIRROR 1 20.0 S CD K ------------------------------------------------------------------------------------------------------------------------------------ 32 M82-A-POS1 STIS/C ACCUM 52X0.1 G430L 4300 CR-SPLIT=2 1 26 M POS TARG 0.0,-0.6 CD ------------------------------------------------------------------------------------------------------------------------------------ 34 M82-A-POS1 STIS/C ACCUM 52X0.1 G430L 4300 CR-SPLIT=NO 1 13 M POS TARG 0.0,-1.2 END CD ORBIT ------------------------------------------------------------------------------------------------------------------------------------ 40 M82-A-POS1 STIS/C ACQ/PEA 52X0.1 MIRROR 1 20.0 S CD K ------------------------------------------------------------------------------------------------------------------------------------ 42 M82-A-POS1 STIS/C ACCUM 52X0.1 G430L 4300 CR-SPLIT=2 1 26 M POS TARG 0.0,-1.8 CD ------------------------------------------------------------------------------------------------------------------------------------ 44 M82-A-POS1 STIS/C ACCUM 52X0.1 G430L 4300 CR-SPLIT=NO 1 13 M POS TARG 0.0, 0.6 END CD ORBIT ------------------------------------------------------------------------------------------------------------------------------------ 9117( 28) - 10/17/02 09:22 - [ 10] Summary Form for Proposal 9117 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures F28X50LP 52X0.1 ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ ACQ/PEAK ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=2 CR-SPLIT=NO CR-SPLIT=3 CR-SPLIT=4 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 90D TO 96D ORIENT 270D TO 276D GS ACQ SCENARIO SINGLE END ORBIT END ORBIT MAX DUR MAX DUR ORIENT 94D TO 100D ORIENT 274D TO 280D MAX DUR END ORBIT ORIENT 63.5D TO 75.5D ORIENT 243.5D TO 255.5D POS TARG 0.0,-0.6 POS TARG 0.0,-1.2 POS TARG 0.0, 0.6 ORIENT 83D TO 95D ORIENT 263D TO 275D GROUP 04, 05 WITHIN 60 D POS TARG 0.0,-0.6 END ORBIT POS TARG 0.0, 0.6 END ORBIT POS TARG 0.0,-1.8 END ORBIT SAME ORIENT AS 04 POS TARG 0.0, 1.2 END ORBIT POS TARG 0.0, 1.8 POS TARG 0.0,-1.2 END ORBIT POS TARG 0.0,-1.8 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR G750M G430L G750L ------------------------------------------------------------------------------------------------------------------------------------ Target Names M82-B1-CLUS1+2 CCDFLAT M82-B2-CLUS1+3 M82-F+L M82-A-POS1 ------------------------------------------------------------------------------------------------------------------------------------ Wavelengths 8561 6768 4300 7751 6581 ------------------------------------------------------------------------------------------------------------------------------------