6603( 3) - 02/16/96 17:50 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 6603 Version: 3 Check-in Date: 16-Feb-1996 17:44:29 1.Proposal Title: Probing Proto-Planetary Disks in the Orion Nebula ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Cycle BINARIES AND STAR FOR GO 6 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: John Bally University of Colorado CoI: Mark McCaughrean Max Planck Institute for Astronomy, N Heidelberg CoI: C. Robert O'Dell Rice University N CoI: Ralph Sutherland Mt. Stromolo and Siding Spring N Observatories CoI: David Devine University of Colorado N 6603( 3) - 02/16/96 17:50 - [ 2] ------------------------------------------------------------------------------------ 6. Abstract We will probe fundamental physical properties and structures of recently discovered, and uniquely visible, protoplanetary disks around young stars in the Orion Nebula (M42, NGC1976). We will obtain narrow band and continuum images with the maximum possible angular resolution and use orders of magnitude deeper integrations than previously attempted. We will achieve images of protoplanetary disks with a linear resolutions of ~ 5 to 20 A.U., a factor a 2 to 5 improvement over previous HST results. It is vital to carry out these new high resolution deep integrations because accurate determinations of absorption profiles will be fundamental in constraining models of disks and their interactions with the nebula environment. There is also the exciting possibility of detecting absorption profile ``gaps'' or rings on A.U. scales that could be direct evidence for extra--solar planets. Hence, our primary objectives are to obtain: 1 Deep PC & WFC images of a small number of selected objects (discovered in Cycle 4 & 5) which we believe to be disks seen in silhouette, or are disks in ionized envelopes, 2 Deep UV images with the FOC of pure dark objects that lie in front of the brightest portion of the Orion Nebula. 3 Proper motion determinations of fast compact nebular components. Using earlier epoch HST data, our Cycle 6 WFPC2 images will give a proper motion sensitivity (> 40 Delta t_years^-1 kms) allowing us to detect moving gas from stationary nebula gas. Observing_Description Description of Primary Targets NGC1976-HST16 This is the largest dark disk that is seen relatively face on. We will take very deep images in three narrow-band filters with the PC in an attempt to obtain an accurate radial profile for the dust distribution and its wavelength dependence, and to look for gaps that may indicate giant planet formation. We plan to integrate a full orbit in the FOC F220W filter in an attempt to obtain 8 AU angular resolution which can be used to set limits on gaps as narrow as a fraction of an AU under the back lit circumstances of HST 16. NGC1976-HST10 field HST 10 is a tear drop shaped bright proplyd that contains a 1' diameter edge-on disk. Its central star is not visible out to Lambda = 3.8Mum. It is either a flattened starless core or an edge-on circumstellar disk with at least 50 to 100 magnitudes of visual extinction. This object exhibits the strongest H_2 S(1) line of any of the proplyds observed at the IRTF. UV observations for a full orbit will be used to compare the disk properties at UV and red wavelengths, obtain constraints on grain properties, and to look for pile of up of dust near the ionization front. HST 10 will fall in the same PC frame as HST16, so it will be be reobserved with a factor of two better resolution and 10 times longer integration than previous (Cycle 4 & 5) data, with no additional integrations. NGC1976-SW It is a 2"\\ diameter silhouetted disk seen edge on that contains an obscured star whose radiation illuminates cones of visual and near--IR light along its minor axis. The star has not been detected directly even at 1 micron, implying a large line--of--sight extinction. We plan two orbits for polarimetry with broad-band WFC filters (POLQ + F606W). In these filters, the reflection cones will be relatively bright (providing a signal of about 3 electron/second in a PC pixel. The reflection cone is expected to be highly polarized. The polarization data will constrain the source geometry as well as the dust properties. We plan obtain dithered PC observations of this object in 2 narrow band filters, (chosen to contain the brightest background fluxes) in an attempt to obtain the radial and vertical column density profiles. We will also obtain a full orbit integration in a far red broad- band filter in order to detect the central star, or obtain a lower limit in the opacity towards it. This will also allow us to determine a lower limit to the total dust mass in the disk, a vital parameter. In each orbit, we will use sub-pixel sub-stepping to reach the full angular resolution of HST. The discovery observations of SW are qualitatively consistent with edge-on embedded YSOs modeled by Whitney & Hartmann (1992, ApJ, 395, 529; 1993, ApJ, 402, 605), and we expect that the more quantitative comparisons that will be possible with the new data will help us determine the vertical structure in the disk and the diffuse scattering halo surrounding it. NGC1976-HST8 This is one of the largest cometary teardrop shaped proplyds in the Orion Nebula. It contains both a visible star and a dark disk inside the ionized teardrop. It is illuminated by Theta ^2A Ori, an O9 star below the Orion Bar. This object was discovered in the pre-repair mission images O'Dell, Wen, and Hu (1993). Full orbit sub-stepped images in narrow band filters will characterize the disk and ionization conditions. NGC1976-PC151, NGC1976-WF1, NGC1976-PC10, NGC1976-SIX, NGC1976-SEVEN These are all dark silhouette proplyds discovered during the Cycle 4 & 5 surveys. Most are small (sub- arcsecond), and the present WFC images are poorly resolved. Therefore we will obtain PC images in a single bright emission line (HAlpha, F656N), using sub-pixel dithering to obtain the full resolution at that wavelength. Each disk will be given one orbit. These observations will define the radial extent and other characteristics of of these disks, and in combination with the other dark disk observations, will provide us with the first opportunity to determine the statistical properties of set of YSO disks. NGC1976-LV5 This single FOC pointing contains 5 proplyds. These objects lie very close to the Trapezium and are the brightest of the cometary proplyds (similar to the ones shown in Figure 1 frames 1, 2, and 4). Our Cycle 4 short exposures show tantalizing evidence of dark disks inside the bright cometary shapes. Full orbit wide band images will delineate these disks clearly. Data will be used for analysis of proplyd morphology and its relation to the central star properties (mostly determined from near-IR and ground based visual spectra) and location within the M42 core. FOC images will use spectral elements that include the brightest UV emission features. Exposure times for the above sources are based on our ERO and Cycle 4 data, scaled to PC (or FOC) resolution, with the requirement that at least 2 high S/N exposures are needed in each dithered position for cosmic ray rejection. Parallel Observations We will use WFPC2 to obtain narrow band parallel observations while we perform primary data acquisition on the FOC. This data will permit coverage of outlying regions of M42 not covered by primary WFPC2 targeting and will greatly increase the area of the sky in which proplyds, shock excited nebulae (Herbig-Haro) objects and stellar jets, have been searched. The roll requirements for HST will be determined by the desire to make WFPC2 coverage of the Orion Nebula complete as possible. This should allow completion of coverage of M43, a nearby and simpler HII region which is partially covered by Cycle 4 parallel observations. Related Observations Optical We have used facilities at Kitt Peak National Observatory, the ESO New Technology Telescope, and the facilities at McDonald Observatory to obtain high dispersion spectra of the proplyds and the surrounding nebula (Coude feed and McDonald Cas spectrometer), and to acquire narrow band images of the nebula with the best angular resolution possible from the ground (with the NTT). Near Infrared Near infrared observations of the 2.1218Mum S(1) line of H_2 obtained in November 1994 with the IRTF (with CSHELL) resulted in the detection of strong H_2 emission (considerably brighter than that produced by the background molecular cloud) from 8 out of 10 proplyds, including HST 1 and HST 10. This data demonstrates the existence of large quantities of molecular gas between the proplyd ionization front and the central star. The H_2 emission is likely to be excited by incident UV light. Although HST 10 has the brightest H_2 emission of any proplyd studied so far, the dark object HST 16 was not detected, probably due to insufficient UV excitation. McCaughrean, Zinnecker, Rayner, and Stauffer have obtained 1 to 4micron (JHKL) imaging photometry of the Trapezium Cluster on Calar Alto and at the IRTF\\@. These data will be combined with existing and new HST V and I imaging photometry, as well as optical spectroscopy, in order to determine the ages and masses of the cluster stars. These stellar parameters will be used in the analysis of the proplyds, as they play a role in the disk structure and dynamics. Also, they help constrain the inner edge of the disk, as the majority of all Trapezium stars are found to show excess 4micron flux, thought to arise in that region (McCaughrean et al. 1994: http://spitfire.mpia- hd.mpg.de/Preprints.html ``Circumstellar disks in the Trapezium Cluster''). Millimeter Wavelengths We have applied for time to use the Owens Valley Interferometer to search for millimeter-wavelength emission from the proplyds, in order to determine the total dust mass from the continuum emission, and the cold gas mass and dynamics traced by the J=2--1 isotopes of CO\\@. From the mm- wave continuum, we can estimate the total dust mass present. Although optical obscuration is not a reliable dust indicator for the proplyds, a comparison of the optical extinction and millimeter dust emission can provide constraints of the grain sizes. The width of mm-wavelength spectral lines will provide kinematic constraints on the mass of the central star, since for the largest proplyds, we may detect Keplerian rotation. From the integrated line flux, we can estimate the total column density of the molecules, and combine this with the continuum to estimate gas to dust ratios, depletions, and hopefully the total mass of the protoplanetary disks. Other These observations provide us with the best available optical and ground based data on these objects. This data, together with the ionization code, MAPPINGS II (Sutherland & Dopita 1992, ApJS, 88, 253) are being used to analyze spectral lines extending from the UV to the near-IR data to infer ionization and excitation conditions in and around the proplyds. Detailed theoretical dust models which can take into account classical grains and small organic grains in various mixtures will be used to model the dust front physics. ------------------------------------------------------------------------------------ 6603( 3) - 02/16/96 17:50 - [ 3] Data Distribution Media: 8MM Blocking Factor: 10 Ship To: *John Bally*CASA, Campus Box 389*University of Colorado*Boulder, CO 80309 Ship Via: UPS Email: , ------------------------------------------------------------------------------------ 6603( 3) - 02/16/96 17:50 - [ 4] TARGET LIST a) Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC1976- ISM, HII REGION,STAR,T RA=05H 35M 18.26S +/- 1.0",DEC=- 2000 F-LINE(6563)=5+/-1e-13 HST10-16 TAURI STAR 05D 24' 09.2" +/- 1.0" Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.0 0.0 0.0 2 NGC1976-SW ISM, HII REGION,STAR,T RA=05H 35M 11.35S +/- 1.0",DEC=- J2000 F-LINE(6563)=-5+/-1e-13 TAURI STAR 05D 24' 26.3" +/- 1.0" Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) J2000 0.0 0.0 0.0 3 NGC1976- ISM, HII REGION,STAR,T RA=05H 35M 16.63S +/- 1.0",DEC=- 2000 F-LINE(6563)=5+/-1e-13 PC151-SIX TAURI STAR 05D 22' 42.6" +/- 1.0" Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.0 0.0 0.0 4 NGC1976-WF1 ISM, HII REGION,STAR,T RA=05H 35M 21.80S +/- 1.0",DEC=- 2000 F-LINE(6563)=5+/-1e-13 TAURI STAR 05D 23' 54.06" +/- 1.0" Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.0 0.0 0.0 5 NGC1976- ISM, HII REGION,STAR,T RA=05H 35M 15.83S +/- 1.0",DEC=- 2000 F-LINE(6563)=5+/-1e-13 LV6VLA10 TAURI STAR 05D 23' 25.65" +/- 1.0" Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.0 0.0 0.0 6 NGC1976- ISM, HII REGION,STAR,T RA=05H 35M 18.32S +/- 1.0",DEC=- 2000 F-LINE(6563)=-5+/-1e-13 HST16 TAURI STAR 05D 24' 05.0" +/- 1.0" Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.0 0.0 0.0 7 NGC1976-HST1 ISM, HII REGION,STAR,T RA=05H 35M 17.67S +/- 1.0",DEC=- 2000 F-LINE(6563)=5+/-1e-13 TAURI STAR 05D 23' 41.0" +/- 1.0" Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.0 0.0 0.0 8 NGC1976-HST8 ISM, HII REGION,STAR,T RA=05H 35M 20.14S +/- 1.0",DEC=- 2000 F-LINE(6563)=5+/-1e-13 -9 TAURI STAR 05D 24' 36.66" +/- 1.0" Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.0 0.0 0.0 9 NGC1976-PC10 ISM, HII REGION,STAR,T RA=05H 35M 12.10S +/- 1.0",DEC=- 2000 F-LINE(6563)=5+/-1e-13 TAURI STAR 05D 19' 25.1" +/- 1.0" Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.0 0.0 0.0 10 NGC1976- ISM, HII REGION,STAR,T RA=05H 35M 18.21S +/- 1.0",DEC=- 2000 F-LINE(6563)=5+/-1e-13 HST10 TAURI STAR 05D 24' 13.3" +/- 1.0" Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.0 0.0 0.0 6603( 3) - 02/16/96 17:50 - [ 5] Visit: 01 Visit Requirements: ORIENT 310D TO 320D On Hold Comments: Additional Comments: U3PA=315+/-5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC1976- WFPC2 IMAGE PC1 F502N 5007 DITHER-TYPE=BOX 1 400S HST10-16 Comments: [OIII] ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC1976- WFPC2 IMAGE PC1 F658N 6584 DITHER-TYPE=BOX 1 400S HST10-16 Comments: [NII] ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC1976- WFPC2 IMAGE PC1 F658N 6584 1 60S HST10-16 Comments: [NII] ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC1976- WFPC2 IMAGE PC1 F656N 6563 DITHER-TYPE=BOX 1 400S HST10-16 Comments: Ha ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC1976- WFPC2 IMAGE PC1 F656N 6563 1 60S HST10-16 Comments: Ha ------------------------------------------------------------------------------------------------------------------------------------ 6603( 3) - 02/16/96 17:50 - [ 6] Visit: 02 Visit Requirements: ORIENT 65D TO 75D On Hold Comments: Additional Comments: U3PA=70D+/-5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC1976-SW WFPC2 IMAGE PC1 F502N 5007 DITHER-TYPE=BOX 1 400S Comments: [OIII] ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC1976-SW WFPC2 IMAGE PC1 F656N 6563 DITHER-TYPE=BOX 1 400S Comments: Ha ------------------------------------------------------------------------------------------------------------------------------------ 8 NGC1976-SW WFPC2 IMAGE PC1 F656N 6563 1 60S Comments: Short Ha ------------------------------------------------------------------------------------------------------------------------------------ 9 NGC1976-SW WFPC2 IMAGE PC1 F814W DITHER-TYPE=BOX 1 400S Comments: CONTINUUM ------------------------------------------------------------------------------------------------------------------------------------ 10 NGC1976-SW WFPC2 IMAGE PC1 F814W 1 60S Comments: SHORT CONTINUUM ------------------------------------------------------------------------------------------------------------------------------------ 11 NGC1976-SW WFPC2 IMAGE PC1 F606W,POL DITHER- 1 300S Q TYPE=LINE Comments: POLARIZATION PA=135D ------------------------------------------------------------------------------------------------------------------------------------ 12 NGC1976-SW WFPC2 IMAGE WF2 F606W,POL DITHER- 1 300S Q TYPE=LINE Comments: POLARIZATION PA=0D ------------------------------------------------------------------------------------------------------------------------------------ 13 NGC1976-SW WFPC2 IMAGE WF3 F606W,POL DITHER- 1 300S Q TYPE=LINE Comments: POLARIZATION PA=45D ------------------------------------------------------------------------------------------------------------------------------------ 14 NGC1976-SW WFPC2 IMAGE WF4 F606W,POL DITHER- 1 300S Q TYPE=LINE Comments: POLARIZATION PA=90D ------------------------------------------------------------------------------------------------------------------------------------ 6603( 3) - 02/16/96 17:50 - [ 7] Visit: 03 Visit Requirements: ORIENT 95D TO 105D On Hold Comments: Additional Comments: U3PA=100D+/-5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 15 NGC1976- WFPC2 IMAGE PC1 F656N 6563 DITHER-TYPE=BOX 2 160S PC151-SIX ------------------------------------------------------------------------------------------------------------------------------------ 16 NGC1976- WFPC2 IMAGE PC1 F656N 6563 1 200S PC151-SIX ------------------------------------------------------------------------------------------------------------------------------------ 17 NGC1976- WFPC2 IMAGE PC1 F656N 6563 DITHER-TYPE=BOX 2 160S HST1 Comments: SEVEN. COPY OF CYCLE 4 POINTING ------------------------------------------------------------------------------------------------------------------------------------ 18 NGC1976- WFPC2 IMAGE PC1 F656N 6563 1 200S HST1 Comments: SEVEN. COPY OF CYCLE 4 POINTING ------------------------------------------------------------------------------------------------------------------------------------ 19 NGC1976- WFPC2 IMAGE PC1 F656N 6563 DITHER-TYPE=BOX 1 400S PC10 Comments: EXTEND MOSAIC TO N ------------------------------------------------------------------------------------------------------------------------------------ 6603( 3) - 02/16/96 17:50 - [ 8] Visit: 04 Visit Requirements: ORIENT 250D TO 260D On Hold Comments: Additional Comments: U3PA=255D+/-5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 20 NGC1976-WF1 WFPC2 IMAGE PC1 F656N 6563 DITHER-TYPE=BOX 1 400S Comments: EXTEND WF MOSAIC TO EAST ------------------------------------------------------------------------------------------------------------------------------------ 21 NGC1976- WFPC2 IMAGE PC1 F502N 5007 DITHER-TYPE=BOX 1 400S HST8-9 Comments: [OIII], WF COVERS HH203 AND HH204 ------------------------------------------------------------------------------------------------------------------------------------ 22 NGC1976- WFPC2 IMAGE PC1 F502N 5007 1 60S HST8-9 Comments: SHORT [OIII], WF COVERS HH203 AND HH204 ------------------------------------------------------------------------------------------------------------------------------------ 23 NGC1976- WFPC2 IMAGE PC1 F631N 6300 DITHER-TYPE=BOX 1 400S HST8-9 Comments: [OI], WF COVERS HH203 AND HH204 ------------------------------------------------------------------------------------------------------------------------------------ 24 NGC1976- WFPC2 IMAGE PC1 F631N 6300 1 60S HST8-9 Comments: SHORT [OI], WF COVERS HH203 AND HH204 ------------------------------------------------------------------------------------------------------------------------------------ 25 NGC1976- WFPC2 IMAGE PC1 F656N 6563 DITHER-TYPE=BOX 1 400S HST8-9 Comments: HA, WF COVERS HH203 AND HH204 ------------------------------------------------------------------------------------------------------------------------------------ 26 NGC1976- WFPC2 IMAGE PC1 F656N 6563 1 60S HST8-9 Comments: SHORT HA, WF COVERS HH203 AND HH204 ------------------------------------------------------------------------------------------------------------------------------------ 27 NGC1976- WFPC2 IMAGE PC1 F658N 6583 DITHER-TYPE=BOX 1 400S HST8-9 Comments: [NII], WF COVERS HH203 AND HH204 ------------------------------------------------------------------------------------------------------------------------------------ 28 NGC1976- WFPC2 IMAGE PC1 F658N 6583 1 60S HST8-9 Comments: SHORT [NII], WF COVERS HH203 AND HH204 ------------------------------------------------------------------------------------------------------------------------------------ 6603( 3) - 02/16/96 17:50 - [ 9] Visit: 05 Visit Requirements: ORIENT 265D TO 275D On Hold Comments: Additional Comments: U3PA=270D+/-5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 29 NGC1976- FOC/96 IMAGE 512X512 F220W 2200 1 1100S HST16 Comments: UV CONTINUUM ------------------------------------------------------------------------------------------------------------------------------------ 30 NGC1976- WFPC2 IMAGE PC1 F656N 6563 1 900S PAR WITH 29 HST16 Comments: WF EXTENDS Ha MOSAIC NW ------------------------------------------------------------------------------------------------------------------------------------ 31 NGC1976- FOC/96 IMAGE 512X512 F220W 2200 1 1100S POS TARG +0.3535, +0.3535 HST16 Comments: UV CONTINUUM ------------------------------------------------------------------------------------------------------------------------------------ 32 NGC1976- WFPC2 IMAGE PC1 F656N 6563 1 900S PAR WITH 31 HST16 Comments: WF EXTENDS Ha MOSAIC NW ------------------------------------------------------------------------------------------------------------------------------------ 33 NGC1976- FOC/96 IMAGE 512X512 F220W 2200 1 1100S HST10 Comments: UV CONTINUUM ------------------------------------------------------------------------------------------------------------------------------------ 34 NGC1976- WFPC2 IMAGE PC1 F673N 6731 1 900S PAR WITH 33 HST10 Comments: WF EXTENDS [SII] MOSAIC NW ------------------------------------------------------------------------------------------------------------------------------------ 35 NGC1976- FOC/96 IMAGE 512X512 F220W 2200 1 1100S POS TARG +0.3535, +0.3535 HST10 Comments: UV CONTINUUM ------------------------------------------------------------------------------------------------------------------------------------ 36 NGC1976- WFPC2 IMAGE PC1 F673N 6731 1 900S PAR WITH 35 HST10 Comments: WF EXTENDS [SII] MOSAIC NW ------------------------------------------------------------------------------------------------------------------------------------ 37 NGC1976- FOC/96 IMAGE 512X512 F220W 2200 1 1100S LV6VLA10 Comments: UV CONTINUUM ------------------------------------------------------------------------------------------------------------------------------------ 38 NGC1976- WFPC2 IMAGE PC1 F658N 6584 1 900S PAR WITH 37 LV6VLA10 Comments: WF EXTENDS [NII] MOSAIC NW ------------------------------------------------------------------------------------------------------------------------------------ 39 NGC1976- FOC/96 IMAGE 512X512 F220W 2200 1 1100S POS TARG +0.3535, +0.3535 LV6VLA10 Comments: UV CONTINUUM ------------------------------------------------------------------------------------------------------------------------------------ 6603( 3) - 02/16/96 17:50 - [ 10] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 40 NGC1976- WFPC2 IMAGE PC1 F658N 6584 1 900S PAR WITH 39 LV6VLA10 Comments: WF EXTENDS [NII] MOSAIC NW ------------------------------------------------------------------------------------------------------------------------------------ 41 NGC1976- FOC/96 IMAGE 512X512 F220W 2200 1 1100S HST1 Comments: UV CONTINUUM ------------------------------------------------------------------------------------------------------------------------------------ 42 NGC1976- WFPC2 IMAGE PC1 F502N 5007 1 900S PAR WITH 41 HST1 Comments: WF EXTENDS [OIII] MOSAIC NW ------------------------------------------------------------------------------------------------------------------------------------ 43 NGC1976- FOC/96 IMAGE 512X512 F220W 2200 1 1100S POS TARG +0.3535, +0.3535 HST1 Comments: UV CONTINUUM ------------------------------------------------------------------------------------------------------------------------------------ 44 NGC1976- WFPC2 IMAGE PC1 F502N 5007 1 900S PAR WITH 43 HST1 Comments: WF EXTENDS [OIII] MOSAIC NW ------------------------------------------------------------------------------------------------------------------------------------ 6603( 3) - 02/16/96 17:50 - [ 11] Summary Form for Proposal 6603 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFPC2 FOC/96 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters DITHER-TYPE=BOX DITHER-TYPE=LINE ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category BINARIES AND STAR FORMATION ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 310D TO 320D ORIENT 65D TO 75D ORIENT 95D TO 105D ORIENT 250D TO 260D ORIENT 265D TO 275D PAR WITH 29 POS TARG +0.3535, +0.3535 PAR WITH 31 PAR WITH 33 PAR WITH 35 PAR WITH 37 PAR WITH 39 PAR WITH 41 PAR WITH 43 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F502N F658N F656N F814W F606W,POLQ F631N F220W F673N ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC1976-HST10-16 NGC1976-SW NGC1976-PC151-SIX NGC1976-HST1 NGC1976-PC10 NGC1976-WF1 NGC1976-HST8-9 NGC1976-HST16 NGC1976-HST10 NGC1976-LV6VLA10 ------------------------------------------------------------------------------------------------------------------------------------