Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 4276c Report Date: 09-May-96:19:30 Version: ********** Check-in Date: ********** 1.Proposal Title: THE ABUNDANCE AND EVOLUTION OF CARBON IN THE SPIRAL GALAXY NGC 2403: CYCLE3 MEDIUM ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID GALAXIES & CLUSTERS GO Sub Category GAS & DUST ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Donald R. Garnett UNIVERSITY OF MINNESOTA USA ------------------------------------------------------------------------------------ 7. Abstract We propose to observe UV emission lines of carbon from H II regions in the spiral galaxy NGC 2403. These measurements, combined with corresponding optical spectra, will be used to derive carbon abundances and C/O ratios across the disk of NGC 2403. Our measurements will provide the first good sample of data on carbon abundances across a spiral galaxy. We will use the derived abundances to study the time evolution of C/O across the galaxy and compare the results with those obtained from observations of stars in our own Galaxy as well as theoretical predictions for the behavior of C/O in spirals. In particular, we will make detailed comparisons between the behavior of C, N, He, and O in the outer parts of NGC 2403 with that observed in irregular galaxies of similar abundances; such comparison will tell us if the evolution of the outer disks of spirals has proceeded in similar fashion as for the irregulars. In addition, we will compare the gradients for C and N across the disk to obtain an improved estimate of the fraction of N produced by primary nucleosynthesis. ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 10.55 par: 0 10. Num targs pri: 6 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: FOS ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 4276c PI: Donald R. Garnett Proposal Title: THE ABUNDANCE AND EVOLUTION OF CARBON IN THE SPIRAL GALAXY NGC 2403: CYCLE3 MEDIUM ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Pi Donald R. Garnett UNIVERSITY OF MINNESOTA USA Reginald J. Dufour RICE UNIVERSITY USA Manuel Peimbert INSTITUTO DE ASTRONOMIA MEXICO Gregory A. Shields UNIVERSITY OF TEXAS USA Evan D. Skillman UNIVERSITY OF MINNESOTA USA Elena Terlevich ROYAL GREENWICH OBSERVATORY UNITED KING X Roberto J. Terlevich ROYAL GREENWICH OBSERVATORY UNITED KING X Silvia Torres-Peimbert INSTITUTO DE ASTRONOMIA MEXICO ------------------------------------------------------------------------------------ 2. Scientific Justification. ------------------------------------------------------------------------------------ 3. Description of proposed observations. We will be using the FOS with the red detector, grating G190H, and the 1" circular aperture to observe the C III] feature at 1908 A at approximately 4 A spectral resolution. In general, we wish to obtain a S/N ratio of 10 or better in the C III] feature in order to derive C abundances with the required precision. However, nebular electron temperatures fall steeply with increasing oxygen abundance, and consequently, so do the UV emission line strengths. Thus, for the more metal-rich H II regions prohibitively long exposures are needed to obtain the desired S/N. As a compromise we have settled on exposure times long enough to reach a S/N in excess of 5 for the C III] line, except for VS 44 and VS 9, where we predict we can reach S/N of 10 in short integrations. Since we will be determining the C/H abundance ratio by relating the flux of C III] to that of H- beta, we need to ensure that we have the proper photometric scaling of the UV spectrum to the optical spectrum (there are no emission lines in the UV we can use to determine such scaling). Therefore, we will obtain short exposures at the same position for each object using the same detector and aperture, but with grating G570H. This setup includes H-beta, H-alpha, and [O III] 5007 A at approximately 10 A resolution. These spectra will provide the correct photometric scaling of the UV C III] lines relative to H-beta and [O III] in the optical. We will also use these spectra to determine the amount of interstellar extinction. With exposures of order only 5 minutes, we estimate that we can obtain S/N > 50 for H-beta, H-alpha, and [O III] 5007, based on the fluxes listed in the exposure logs. Page 3 ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. We require HST observations for this project because carbon abundances for H II regions cannot be reliably measured from the ground. The dominant ionization stage of C in H II regions is C++, for which the only strong emission lines are the collisionally-excited C III] 1907-9A lines. These lines have been detected in a few H II regions with IUE, with large uncertainties in many cases because of IUE's low sensitivity. The high dynamic range of the FOS detector allows an improvement of 10-100 over that possible with the IUE. Coupled with the 35-fold increase in light gathering power, we will be able to measure C line strengths in H II regions previously unattainable. We have reached the limits of what can be done with IUE on extragalactic H II regions; nevertheless, the knowledge gained from these observations provide firm groundwork for this proposal. We already have high quality ground-based optical spectra for each of our targets. These spectra will provide precise measurements of critical diagnostic emission-line ratios which will allow us to determine accurately the physical conditions in the H II regions, and thus the C and O abundances as well. We also have a scheduled Cycle 2 FOS program to study C and O abundances in metal-poor blue compact dwarf galaxies. The program is complementary to the one proposed here, with the overlapping goal of determining the variation of C abundances over the widest possible range of metallicity. Our sample of 6 targets was chosen to provide an adequate sampling of the largest possible range of O/H and radius in NGC 2403, to assure that the determination of any abundance gradient is not dominated by a measurement for any single H II region. ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. No special scheduling requirements. ------------------------------------------------------------------------------------ 6. Description of special calibration exposures. No special calibration requirements. ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. OUR FOS SPECTRA REQUIRE NO SPECIAL DATA REDUCTION PROCEDURES, BECAUSE SPECTRO- SCOPY OF EXTENDED OBJECTS WITH THE FOS ARE MINIMALLY AFFECTED BY SPHERICAL ABERRATION IN THE HST PRIMARY MIRROR. The spectra will be extracted and calibrated using STSDAS software at Rice University and the University of Minnesota. We will measure line fluxes for the C III], [O III], H-beta, H-alpha, and Si III] emission lines (as well as any weaker lines that may appear in our spectra), and the shape of the stellar continuum. The scientific analysis will generally follow procedures established in the studies of NGC 2363 (Peimbert, Pena, & Torres-Peimbert 1986) and I Zw 18 (Dufour, Garnett, & Shields 1988). We have limited the targets to those for which we have excellent ground based optical spectra The ground-based optical data enable us to determine accurately physical conditions (electron temperature and density) from diagnostic emission line ratios in the H II regions. We will compute abundances for C++ and O++ within each H II region will be calculated directly from the emission lines observed in the FOS spectra, guided by photo- ionization models (based on the code developed by Shields) to account for ionization effects. Both Skillman and Garnett also have extensive experience in using this code to study H II regions. If the UV spectra have sufficient S/N in the continuum, we may pursue a more sophisticated analysis of the stellar population content and the IMF via comparison with UV spectra for hot stars in the IUE spectral atlas. In particular, our spectra will include the He II 1640 A and N IV 1720 A features. These lines are weak or absent in normal O stars, but display prominent P Cygni profiles in the presence of dense stellar winds, and therefore are sensitive indicators of the presence of highly evolved massive stars such as supergiants and Wolf-Rayet stars. Page 4 ------------------------------------------------------------------------------------ 8. Additional comments or special requests. We wish to emphasize that OUR PROPOSED OBSERVATIONS ARE ESSENTIALLY UNAFFECTED BY THE SPHERICAL ABERRATION PRESENT IN THE PRIMARY MIRROR. Most of our targets fill the 1" apertures we plan to use, and have spatial profiles which fall off much less rapidly than point sources. Therefore, we expect our integration times and concomitant S/N ratios will be identical to those for a healthy HST. Related HST proposals: Garnett is on a Cycle 2 program with Heckman et al. (#3840) for FOS UV spectro- scopy of starburst galaxies. The primary scientific goal of this program is to study the massive star populations of starbursts through the UV stellar absorp- tion lines. However, nebular emission lines may be visible as well in the spec- tra, and can be used to study carbon abundances in luminous starburst galaxies. Five of the investigators on this proposal are also on a cycle 3 proposal (#4382) to study two compact H II regions in the SMC, one of which is very dusty, the other non-dusty. We will use FOS UV spectroscopy of these two nebulae to study the scattering and absorption characteristics of SMC dust and compare the properties of the dust with Galactic dust. We will also be able to derive carbon abundances from the UV spectra, the results of which will be available for analysis in the program proposed here. ------------------------------------------------------------------------------------ 9. Description of previous HST work. Program GO 2416 "Imagery and Spectroscopy of Super Metal Poor Galaxies" (PI: Dufour; CoIs common to this proposal: Shields, Skillman). The goal of this program is to obtain UV-visible-near-IR imagery of the dwarf irregular galaxy GR8. WFC images of GR8 were successfully obtained in 1991 July. The wide band images in B,V,R, and I have been calibrated (several times) and were presented at the January 1992 AAS meeting. FOS spectra of an H II region are scheduled for February 1993. Program GO 3840 "The Abundances and Time Evolution of C, N, & O in Star Forming Galaxies" (PI: Skillman; CoIs common to this proposal: all). The goal of this program is FOS spectra of HII regions in dwarf irregular galaxies. The relation- ship of this program to the current proposal has been discussed extensively throughout the proposal. Spectra for three of our seven targets have been obtained. Program GO 3589 "Parallel High Resolution Imaging of Diffuse Objects in the Magellanic Clouds (PI: J. Walsh; CoI in common: Garnett). Parallel imaging with WF/PC of a wide variety of ionized nebulae in the Magellanic Clouds. Not related to proposed program. No data obtained yet. Program GO 3591 "Massive Stars in Starburst Galaxies" (PI: T. Heckman; CoI in common: Garnett). FOC imaging and FOS UV spectroscopy of starburst galaxies to study the UV morphology and massive star population of starbursts. Nebular UV emission lines may be detectable in the FOS spectra as well, and could be used to determine carbon abundances. First FOC images scheduled for February 1993. ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). Data Analysis Capabilities: The bulk of the data reduction will take place at the University of Minnesota and Rice University. Skillman has a SUN SPARCstation 1 which is dedicated to astronomical data reduction, while Garnett has a Sparcstation 2 IPX; both systems have IRAF and STSDAS installed and running routinely. Rice University has contributed to an astronomy department SPARC- station 2GX based image analy- sis facility which is currently running both IRAF and STSDAS. The Royal Green- wich Observatory provides a complete VAX and SUN based data reduction facility. Elena Terlevich has experience with STSDAS at the RGO. Research Assistance/Students: We expect to involve graduate students as research assistants in this project at both Rice University and the University of Minnesota. Funds: All five institutes represented in this proposal currently provide salary support for the investigators, with a significant fraction of their time devoted to research. Garnett has a Hubble Fellowship at the University of Minnesota from September 1992. ------------------------------------------------------------------------------------ 11. Address Information Page 5 Name: DONALD R. GARNETT Category: PI Institution: University of Minnesota Address: ASTRONOMY DEPARTMENT 116 CHURCH ST. S.E. City: MINNEAPOLIS State: MN Zip Code: 55455 Country: USA Telephone: (612) 624-1084 Telex (or e-mail): ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 4276c [ 6] ------------------------------------------------------------------------------------------------------------------------------------ 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 NGC2403-VS9 H,503 PLATE-ID=00MC, J2000 V = +130 1 F-LINE(1909) = 3.0 E-16 RA-OFF = +12.05S +/- 0.05S, 2 F-CONT(1909) = 1.3 E-16 DEC-OFF = +17.4" +/- 0.3", 3 W-LINE(1909) = 4.0 FROM 2 4 F-LINE(4861) = 1.8 E-15 5 F-CONT(4861) = 6.0 E-18 6 W-LINE(4861) = 10 ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC2403-VS9- A PLATE-ID=00MC, J2000 V = 0 1 V = 13.6 +/- 0.4 OFFSET RA = 7H 36M 16.58S +/- GSC4120-708 0.19S, DEC = +65D 33' 31.6" +/- 1.2" ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC2403-VS44 H,503 PLATE-ID=00MC, J2000 V = +130 1 F-LINE(1909) = 3.3 E-16 RA-OFF = -2.09S +/- 0.05S, 2 F-CONT(1909) = 8.3 E-16 DEC-OFF = -43.0" +/- 0.3", 3 W-LINE(1909) = 4.0 FROM 4 4 F-LINE(4861) = 6.0 E-15 5 F-CONT(4861) = 3.5 E-17 6 W-LINE(4861) = 10 ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC2403-VS44 A PLATE-ID=00MC, J2000 V = 0 1 V = 14.9 +/- 0.4 -OFFSET RA = 7H 37M 8.78S +/- 0.19S, GSC4120-786 DEC = +65D 37' 20.7" +/- 1.2" ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC2403-VS51 H,503 PLATE-ID=00MC, J2000 V = +130 1 F-LINE(1909) = 3.5 E-17 RA-OFF = 12.64S +/- 0.05S, 2 F-CONT(1909) = 5.5 E-17 DEC-OFF = -54.3" +/- 0.3", 3 W-LINE(1909) = 4.0 FROM 6 4 F-LINE(4861) = 9.0 E-16 5 F-CONT(4861) = 2.9 E-18 6 W-LINE(4861) = 10 ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC2403-VS51 A PLATE-ID=00MC, J2000 V = 0 1 V = 13.5 +/- 0.4 -OFFSET RA = 7H 37M 5.57S +/- 0.04S, GSC4120-916 DEC = +65D 34' 43.5" +/- 0.3" ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC2403-VS3 H,503 PLATE-ID=00MC, J2000 V = +130 1 F-LINE(1909) = 5.1 E-17 RA-OFF = -5.40S +/- 0.05S, 2 F-CONT(1909) = 6.4 E-16 DEC-OFF = -44.6" +/- 0.3", 3 W-LINE(1909) = 4.0 FROM 8 4 F-LINE(4861) = 2.5 E-15 5 F-CONT(4861) = 2.5 E-17 6 W-LINE(4861) = 10 ------------------------------------------------------------------------------------------------------------------------------------ 8 NGC2403-VS3- A PLATE-ID=00MC, J2000 V = 0 1 V = 13.1 +/- 0.4 OFFSET RA = 7H 36M 24.99S +/- GSC4124-550 0.03S, DEC = +65D 37' 49.7" +/- 0.2" ------------------------------------------------------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 4276c [ 7] ------------------------------------------------------------------------------------------------------------------------------------ 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| | | | | | | | | ------------------------------------------------------------------------------------------------------------------------------------ 9 NGC2403-VS41 H,503 PLATE-ID=00MC, J2000 V = +130 1 F-LINE(1909) = 3.8 E-17 RA-OFF = -11.00S +/- 0.05S, 2 F-CONT(1909) = 3.1 E-16 DEC-OFF = +2.2" +/- 0.3", 3 W-LINE(1909) = 4.0 FROM 10 4 F-LINE(4861) = 2.2 E-15 5 F-CONT(4861) = 1.2 E-17 6 W-LINE(4861) = 10 ------------------------------------------------------------------------------------------------------------------------------------ 10 NGC2403-VS41 A PLATE-ID=00MC, J2000 V = 0 1 V = 14.9 +/- 0.4 -OFFSET RA = 7H 37M 8.78S +/- 0.19S, GSC4120-786 DEC = +65D 37' 20.7" +/- 1.2" ------------------------------------------------------------------------------------------------------------------------------------ 11 NGC2403-VS38 H,503 PLATE-ID=00MC, J2000 V = +130 1 F-LINE(1909) = 4.8 E-17 RA-OFF = -16.78S +/- 0.05S, 2 F-CONT(1909) = 3.8 E-16 DEC-OFF = -33.2" +/- 0.3", 3 W-LINE(1909) = 4.0 FROM 12 4 F-LINE(4861) = 3.0 E-15 5 F-CONT(4861) = 1.5 E-17 6 W-LINE(4861) = 10 ------------------------------------------------------------------------------------------------------------------------------------ 12 NGC2403-VS38 A PLATE-ID=00MC, J2000 V = 0 1 V = 14.9 +/- 0.4 -OFFSET RA = 7H 37M 8.78S +/- 0.19S, GSC4120-786 DEC = +65D 37' 20.7" +/- 1.2" ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 4276c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 1.1 NGC2403-VS9 FOS/RD ACQ/ 4.3 MIRROR 1 2.2S 1 1 CYCLE 3 / 1.1-6.4 -OFFSET BINARY SEQ 1.1-1.4 NO GAP ONBOARD ACQ FOR 1.2-1.4 Comments: EXPOSURE TIME COMPUTED ASSUMING G2V ------------------------------------------------------------------------------------------------------------------------------------ 1.2 NGC2403-VS9 FOS/RD ACCUM 1.0 G190H 1 900S 5 1 1 2 3 ------------------------------------------------------------------------------------------------------------------------------------ 1.3 NGC2403-VS9 FOS/RD ACCUM 1.0 G570H 1 360S 50 4 1 5 6 ------------------------------------------------------------------------------------------------------------------------------------ 1.4 NGC2403-VS9 FOS/RD ACQ 4.3 MIRROR 1 60S 1 1 Comments: VERIFICATION OF FIELD AFTER EXPOSURE ------------------------------------------------------------------------------------------------------------------------------------ 2.1 NGC2403- FOS/RD ACQ/ 4.3 MIRROR 1 3.5S 1 1 SEQ 2.1-2.4 NO GAP VS44-OFFSET BINARY ONBOARD ACQ FOR 2.2-2.4 Comments: EXPOSURE TIME COMPUTED ASSUMING G2V ------------------------------------------------------------------------------------------------------------------------------------ 2.2 NGC2403- FOS/RD ACCUM 1.0 G190H 1 1800S 10 1 1 VS44 2 3 ------------------------------------------------------------------------------------------------------------------------------------ 2.3 NGC2403- FOS/RD ACCUM 1.0 G570H 1 120S 50 4 1 VS44 5 6 ------------------------------------------------------------------------------------------------------------------------------------ 2.4 NGC2403- FOS/RD ACQ 4.3 MIRROR 1 60S 1 1 VS44 Comments: VERIFICATION OF FIELD AFTER EXPOSURE ------------------------------------------------------------------------------------------------------------------------------------ 3.1 NGC2403- FOS/RD ACQ/ 4.3 MIRROR 1 2.0S 1 1 SEQ 3.1-3.4 NO GAP VS51-OFFSET BINARY ONBOARD ACQ FOR 3.2-3.4 Comments: EXPOSURE TIME COMPUTED ASSUMING G2V ------------------------------------------------------------------------------------------------------------------------------------ 3.2 NGC2403- FOS/RD ACCUM 1.0 G190H 1 3600S 5 1 1 VS51 2 3 ------------------------------------------------------------------------------------------------------------------------------------ 3.3 NGC2403- FOS/RD ACCUM 1.0 G570H 1 660S 50 4 1 VS51 5 6 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 4276c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 3.4 NGC2403- FOS/RD ACQ 4.3 MIRROR 1 60S 1 1 VS51 Comments: VERIFICATION OF FIELD AFTER EXPOSURE ------------------------------------------------------------------------------------------------------------------------------------ 4.1 NGC2403-VS3 FOS/RD ACQ/ 4.3 MIRROR 1 1.3S 1 1 SEQ 4.1-4.4 NO GAP -OFFSET BINARY ONBOARD ACQ FOR 4.2-4.4 Comments: EXPOSURE TIME COMPUTED ASSUMING G2V ------------------------------------------------------------------------------------------------------------------------------------ 4.2 NGC2403-VS3 FOS/RD ACCUM 1.0 G190H 1 10600S 5 1 1 2 3 ------------------------------------------------------------------------------------------------------------------------------------ 4.3 NGC2403-VS3 FOS/RD ACCUM 1.0 G570H 1 300S 5 4 1 5 6 ------------------------------------------------------------------------------------------------------------------------------------ 4.4 NGC2403-VS3 FOS/RD ACQ 4.3 MIRROR 1 60S 1 1 Comments: VERIFICATION OF FIELD AFTER EXPOSURE ------------------------------------------------------------------------------------------------------------------------------------ 5.1 NGC2403- FOS/RD ACQ/ 4.3 MIRROR 1 3.5S 1 1 SEQ 5.1-5.4 NO GAP VS41-OFFSET BINARY ONBOARD ACQ FOR 5.2-5.4 Comments: EXPOSURE TIME COMPUTED ASSUMING G2V ------------------------------------------------------------------------------------------------------------------------------------ 5.2 NGC2403- FOS/RD ACCUM 1.0 G190H 1 10500S 5 1 1 VS41 2 3 ------------------------------------------------------------------------------------------------------------------------------------ 5.3 NGC2403- FOS/RD ACCUM 1.0 G570H 1 300S 5 4 1 VS41 5 6 ------------------------------------------------------------------------------------------------------------------------------------ 5.4 NGC2403- FOS/RD ACQ 4.3 MIRROR 1 60S 1 1 VS41 Comments: VERIFICATION OF FIELD AFTER EXPOSURE ------------------------------------------------------------------------------------------------------------------------------------ 6.1 NGC2403- FOS/RD ACQ/ 4.3 MIRROR 1 3.5S 1 1 SEQ 6.1-6.4 NO GAP VS38-OFFSET BINARY ONBOARD ACQ FOR 6.2-6.4 Comments: EXPOSURE TIME COMPUTED ASSUMING G2V ------------------------------------------------------------------------------------------------------------------------------------ 6.2 NGC2403- FOS/RD ACCUM 1.0 G190H 1 8100S 5 1 1 VS38 2 3 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 4276c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 6.3 NGC2403- FOS/RD ACCUM 1.0 G570H 1 240S 50 4 1 VS38 5 6 ------------------------------------------------------------------------------------------------------------------------------------ 6.4 NGC2403- FOS/RD ACQ 4.3 MIRROR 1 60S 1 1 VS38 Comments: VERIFICATION OF FIELD AFTER EXPOSURE ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 4276c [ 11] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FOS/RD ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/BINARY ACCUM ACQ ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GO ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 10.55 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category GALAXIES & CLUSTERS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category GAS & DUST ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements CYCLE 3 / 1.1-6.4; SEQ 1.1-1.4 NO GAP; ONBOARD ACQ FOR 1.2-1.4 SEQ 2.1-2.4 NO GAP; ONBOARD ACQ FOR 2.2-2.4 SEQ 3.1-3.4 NO GAP; ONBOARD ACQ FOR 3.2-3.4 SEQ 4.1-4.4 NO GAP; ONBOARD ACQ FOR 4.2-4.4 SEQ 5.1-5.4 NO GAP; ONBOARD ACQ FOR 5.2-5.4 SEQ 6.1-6.4 NO GAP; ONBOARD ACQ FOR 6.2-6.4 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR G190H G570H ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC2403-VS9 NGC2403-VS9-OFFSET GSC4120-708 NGC2403-VS44 NGC2403-VS44-OFFSET GSC4120-786 NGC2403-VS51 NGC2403-VS51-OFFSET GSC4120-916 NGC2403-VS3 NGC2403-VS3-OFFSET GSC4124-550 NGC2403-VS41 NGC2403-VS41-OFFSET NGC2403-VS38 NGC2403-VS38-OFFSET ------------------------------------------------------------------------------------------------------------------------------------