10822( 2) - 05/16/06 09:44 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 10822 Version: 2 Check-in Time: 16-May-2006 13:43:53 STScI Edit Number: Title CIII] Imagery of Planetary Nebulae ------------------------------------------------------------------------------------ Type Cycle Parallel Pointing Tolerance GO 15 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Reginald J. Dufour Rice University CoI: Dr. Richard B. C. Henry University of Oklahoma Norman Campus N CoI: Dr. Karen Kwitter Williams College N CoI: Dr. Joaquin Bohigas Universidad Nacional Autonoma de Mexico, N Obs. Astron. Nac. CoI: Dr. Brent Alan Buckalew University of Wyoming N ------------------------------------------------------------------------------------ Abstract We propose to image five planetary nebulae (PNe) with the F185W filter of WFPC2 in order to study the spatial distribution of the ultraviolet C III] 1909 Angstrom line relative to [O III] 5007 Angstrom and other optical lines. This program follows a Cycle 12 SNAP program (GO 9740) of WFPC2 F185W imaging of PNe and H II regions which validated the feasibility of obtaining images of bright PNe in C III] through careful continuum subtraction and calibrations based on archival IUE SWP and LWP/R spectra. However, in the SNAP program only short (10 minute) exposures of four PNe were taken; we now propose much longer exposures (60-72 minutes) to obtain the desired signal-to-noise to develop high quality C++ ionization maps for comparison with O++ and other ions via photoionization modeling. The five PNe chosen: NGC 2392, NGC 3242, NGC 6543, NGC 6720, and NGC 7662 were selected on the basis of their high surface brightness, extensive UV spectra available from IUE and HST, and numerous WFPC2 images in the archives in other emission lines. We expect the results of this study to impact the utility and accuracy of using the C III] 1909 lines compared to [O III] 5007 for C/O abundance derivations in PNe and H II regions. ------------------------------------------------------------------------------------ 10822( 2) - 05/16/06 09:44 - [ 2] Observations Description ------------------------ The observations consist of long WFPC2 exposures of five planetary nebulae (PNe) centered in the WF3 CCD (WF3-FIX) through the F185W (for the UV CIII] 1909 Ang line + continuum) filter and shorter (3 x 60 sec) exposures with the F547M (continuum) filter. The project has been granted 11 orbits (despite a typo in the front pages of the original APT submission. Thanks to the PC, Shelly Meyett, for clearing this matter up with the time allocation powers at STScI For NGC 2392, NGC 3242, and NGC 7662, visibility lenghts over two orbits permit three 60 sec F547M exposures and 900+800 sec F185W exposures in the first orbit, followed by two 1200 sec exposures in the second orbit. For NGC 6543, slightly longer visibility orbits permit two 900 sec F185W exposures in the first orbit and two 1300 sec exposures in the second orbit. For NGC 6720, which has a lower surface brightness, three orbits are allocated, with exposures as per the three PNe in the first group over the first two orbits, plus a duplication of the second orbit F185W (1200 + 1200 sec) exposures in the third orbit. No special requirements are made, "point and shoot RJD 5/12/2006 Real Time Justification ----------------------- None Calibration Justification ------------------------- None Additional Comments ------------------- ------------------------------------------------------------------------------------ 10822( 2) - 05/16/06 09:44 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC2392 ISM, PLANETARY NEBULA RA=07H29M10.7700S +/- 0.1", J2000 V = 10.1+/-0.1 DEC=+20D54'42.50" +/- 0.1" F(1909+cont)=2.0E-13 ergs cm-2 sec-1 arcsec-1 Reference Frame: ICRS Comments: Updated 5/11/06 RJD 2 NGC3242 ISM, PLANETARY NEBULA RA=10H24M46.1100S +/- 0.1", J2000 V = 10.3 DEC=-18D38'32.60" +/- 0.1" F(1909+cont)=2.5E-13 ergs sec-1 cm-2 arcsec-2 Reference Frame: ICRS Comments: Updated 5/11/06 RJD 3 NGC6543 ISM, PLANETARY NEBULA RA=17H58M33.4200S +/- 0.1", J2000 V = 9.8 DEC=+66D37'59.50" +/- 0.1" F(1909+cont)=1.5E-13 ergs sec-1 cm-2 arcsec-2 Reference Frame: ICRS Comments: Updated 5/11/06 RJD 4 NGC6720 ISM, PLANETARY NEBULA RA=18H53M35.0800S +/- 0.1", J2000 V = 15.0 DEC=+33D01'45.00" +/- 0.1" F(1909+cont)=2.8E-14 ergs sec-1 cm-2 arcsec-2 Reference Frame: ICRS Comments: Updated 5/11/06 RJD 5 NGC7662 ISM, PLANETARY NEBULA RA=23H25M54.0000S +/- 0.1", J2000 V = 9.4 DEC=+42D32'6.03" +/- 0.1" F(1909+cont)=1.3E-13 ergs sec-1 cm-2 arcsec-2 Reference Frame: ICRS Comments: Udated 5/11/06 RJD 10822( 2) - 05/16/06 09:44 - [ 4] Visit: 01 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC2392 WFPC2 IMAGE WF3-FIX F547M 3 60 S see below ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC2392 WFPC2 IMAGE WF3-FIX F185W 1 1700 S see below ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC2392 WFPC2 IMAGE WF3-FIX F185W 1 2400 S see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NGC2392 1 WFPC2 IMAGE WF3-FIX F547M none none 1 none 1 60.0 S NGC2392 1 WFPC2 IMAGE WF3-FIX F547M none none 2 none 1 60.0 S NGC2392 1 WFPC2 IMAGE WF3-FIX F547M none none 3 none 1 60.0 S NGC2392 2 WFPC2 IMAGE WF3-FIX F185W none none none 1 1 900.0 S NGC2392 2 WFPC2 IMAGE WF3-FIX F185W none none none 2 1 800.0 S NGC2392 3 WFPC2 IMAGE WF3-FIX F185W none none none 1 2 1200.0 S NGC2392 3 WFPC2 IMAGE WF3-FIX F185W none none none 2 2 1200.0 S 10822( 2) - 05/16/06 09:44 - [ 5] Visit: 02 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC3242 WFPC2 IMAGE WF3-FIX F547M 3 60 S see below ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC3242 WFPC2 IMAGE WF3-FIX F185W 1 1700 S see below ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC3242 WFPC2 IMAGE WF3-FIX F185W 1 2400 S see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NGC3242 1 WFPC2 IMAGE WF3-FIX F547M none none 1 none 1 60.0 S NGC3242 1 WFPC2 IMAGE WF3-FIX F547M none none 2 none 1 60.0 S NGC3242 1 WFPC2 IMAGE WF3-FIX F547M none none 3 none 1 60.0 S NGC3242 2 WFPC2 IMAGE WF3-FIX F185W none none none 1 1 900.0 S NGC3242 2 WFPC2 IMAGE WF3-FIX F185W none none none 2 1 800.0 S NGC3242 3 WFPC2 IMAGE WF3-FIX F185W none none none 1 2 1200.0 S NGC3242 3 WFPC2 IMAGE WF3-FIX F185W none none none 2 2 1200.0 S 10822( 2) - 05/16/06 09:44 - [ 6] Visit: 03 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC6543 WFPC2 IMAGE WF3-FIX F547M 3 60 S see below ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC6543 WFPC2 IMAGE WF3-FIX F185W 1 1800 S see below ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC6543 WFPC2 IMAGE WF3-FIX F185W 1 2600 S see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NGC6543 1 WFPC2 IMAGE WF3-FIX F547M none none 1 none 1 60.0 S NGC6543 1 WFPC2 IMAGE WF3-FIX F547M none none 2 none 1 60.0 S NGC6543 1 WFPC2 IMAGE WF3-FIX F547M none none 3 none 1 60.0 S NGC6543 2 WFPC2 IMAGE WF3-FIX F185W none none none 1 1 900.0 S NGC6543 2 WFPC2 IMAGE WF3-FIX F185W none none none 2 1 900.0 S NGC6543 3 WFPC2 IMAGE WF3-FIX F185W none none none 1 2 1300.0 S NGC6543 3 WFPC2 IMAGE WF3-FIX F185W none none none 2 2 1300.0 S 10822( 2) - 05/16/06 09:44 - [ 7] Visit: 04 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC6720 WFPC2 IMAGE WF3-FIX F547M 3 60 S see below ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC6720 WFPC2 IMAGE WF3-FIX F185W 1 1700 S see below ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC6720 WFPC2 IMAGE WF3-FIX F185W 1 2400 S see below ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC6720 WFPC2 IMAGE WF3-FIX F185W 1 2400 S ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NGC6720 1 WFPC2 IMAGE WF3-FIX F547M none none 1 none 1 60.0 S NGC6720 1 WFPC2 IMAGE WF3-FIX F547M none none 2 none 1 60.0 S NGC6720 1 WFPC2 IMAGE WF3-FIX F547M none none 3 none 1 60.0 S NGC6720 2 WFPC2 IMAGE WF3-FIX F185W none none none 1 1 900.0 S NGC6720 2 WFPC2 IMAGE WF3-FIX F185W none none none 2 1 800.0 S NGC6720 3 WFPC2 IMAGE WF3-FIX F185W none none none 1 2 1200.0 S NGC6720 3 WFPC2 IMAGE WF3-FIX F185W none none none 2 2 1200.0 S NGC6720 4 WFPC2 IMAGE WF3-FIX F185W none none none 1 3 N/A NGC6720 4 WFPC2 IMAGE WF3-FIX F185W none none none 2 3 N/A 10822( 2) - 05/16/06 09:44 - [ 8] Visit: 05 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC7662 WFPC2 IMAGE WF3-FIX F547M 3 60 S see below ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC7662 WFPC2 IMAGE WF3-FIX F185W 1 1700 S see below ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC7662 WFPC2 IMAGE WF3-FIX F185W 1 2400 S see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NGC7662 1 WFPC2 IMAGE WF3-FIX F547M none none 1 none 1 60.0 S NGC7662 1 WFPC2 IMAGE WF3-FIX F547M none none 2 none 1 60.0 S NGC7662 1 WFPC2 IMAGE WF3-FIX F547M none none 3 none 1 60.0 S NGC7662 2 WFPC2 IMAGE WF3-FIX F185W none none none 1 1 900.0 S NGC7662 2 WFPC2 IMAGE WF3-FIX F185W none none none 2 1 800.0 S NGC7662 3 WFPC2 IMAGE WF3-FIX F185W none none none 1 2 1200.0 S NGC7662 3 WFPC2 IMAGE WF3-FIX F185W none none none 2 2 1200.0 S 10822( 2) - 05/16/06 09:44 - [ 9] Summary Form for Proposal 10822 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures WF3-FIX ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F547M F185W ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC2392 NGC3242 NGC6543 NGC6720 NGC7662 ------------------------------------------------------------------------------------------------------------------------------------