8886( 4) - 09/27/01 09:34 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 8886 Version: 4 Check-in Date: 27-Sep-2001 09:33:24 1.Proposal Title: Hubble Heritage Observations of DEM 106 ------------------------------------------------------------------------------------ 2. Proposal For 3. Cycle GO/DD 9 ------------------------------------------------------------------------------------ 4. Investigators Contact? PI: Keith Noll Space Telescope Science Institute CoI: M. S. Oey Lowell Observatory N CoI: Tricia Royle Space Telescope Science Institute Y CoI: Howard Bond Space Telescope Science Institute N CoI: Carol Christian Space Telescope Science Institute N CoI: Lisa Frattare Space Telescope Science Institute N CoI: Forrest Hamilton Space Telescope Science Institute N CoI: Zolt Levay Space Telescope Science Institute N ------------------------------------------------------------------------------------ 5. Abstract Hubble Heritage observations of DEM L106 in the Large Magellanic Cloud. The nebular complex hosts the OB association LH 38, whose dominant star is a massive, evolved, B[e] star, S22. The target area shows the strong stellar wind from S22 apparently impacting the HII region knots hosting two young B stars. These knots are emission nebulae, ionized primarily by the B stars; whereas the halo enshrouding them is a reflection nebula, scattering the light from S22. Surrounding stars of LH 38 and the LMC field form the backdrop. These observations are taken to match previous archival data of DEM L106 (WFPC2: F656N from Proposal 6698, PI: You-Hua Chu). All data will be presented as a color image on the Hubble Heritage Project Website. ------------------------------------------------------------------------------------ 8886( 4) - 09/27/01 09:34 - [ 2] Observations Description ------------------------ One orbit will be needed for [S II] to obtain the nebular emission. Another orbit will be devoted to broad-band exposures. Exposure times in B are driven by the reflection nebula. V, R, and I will be exposed to match the field depth in B, for imaging the stellar field. As was evident in the previous HST dataset (WFPC2: F656N from Proposal 6698, PI: You-Hua Chu) we are aware of but not concerned with the fact that the bright star S22 will be saturated and blooming in these exposures. The orient and coordinates of this target is set so as to match the orient and coordinates of the archival data. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- WE WANT TO MATCH THE ORIGINAL OBSERVATION HENCE THERE IS SOME CONSTRAINT ON ORIENT. ALSO THE ISSUE OF SPIKES FROM THE BRIGHT STAR. ------------------------------------------------------------------------------------ 8886( 4) - 09/27/01 09:34 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 DEM106 EXT-MEDIUM, HII REGION RA=5H 13M 51.1S +/- 0.1S, DEC=- 2000.0 V = 300 V = 11.8+/-0.5 67D 27' 19.1" +/- 0.5" TYPE=B0I B-V = 0.23+/-0.1 E(B-V) = 0.14 SURF-LINE(6563)=4.2e-15 Coordinate Source: HST_IMAGE Comments: Flux data for B[e] star S22, which is brightest source in the field Coordinates, Radial Velocity and SURF- LINE values from proposal 6698. 8886( 4) - 09/27/01 09:34 - [ 4] Visit: 01 Visit Priority: Visit Requirements: ORIENT 320.02D TO 320.02D BETWEEN 01-Oct-2001 AND 01-Dec-2001 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 DEM106 WFPC2 IMAGE WF2-FIX F673N CLOCKS=YES,CR-SPLIT=NO 2 1100 S ------------------------------------------------------------------------------------------------------------------------------------ 20 DEM106 WFPC2 IMAGE WF2-FIX F502N CLOCKS=YES 2 500 S ------------------------------------------------------------------------------------------------------------------------------------ 30 DEM106 WFPC2 IMAGE WF2-FIX F439W CLOCKS=YES 2 160 S ------------------------------------------------------------------------------------------------------------------------------------ 40 DEM106 WFPC2 IMAGE WF2-FIX F555W CLOCKS=YES 2 40 S ------------------------------------------------------------------------------------------------------------------------------------ 50 DEM106 WFPC2 IMAGE WF2-FIX F814W CLOCKS=YES 2 100 S ------------------------------------------------------------------------------------------------------------------------------------ 8886( 4) - 09/27/01 09:34 - [ 5] Summary Form for Proposal 8886 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures WF2-FIX ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CLOCKS=YES CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO/DD ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 320.02D TO 320.02D BETWEEN 01-Oct-2001 AND 01-Dec-2001 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F673N F502N F439W F555W F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names DEM106 ------------------------------------------------------------------------------------------------------------------------------------