6120( 7) - 09/01/95 10:22 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 6120 Version: 7 Check-in Date: ********** 1.Proposal Title: HIGH RESOLUTION IMAGING OF SNR 0540-69, THE PENULTIMATE SUPERNOVA IN THE LMC ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Cycle Interstellar Medium GO 5 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: Patrizia Caraveo Istituto di Fisica Cosmica del CNR CoI: Giovanni Bignami Istituto di Fisica Cosmica del CNR N CoI: Roberto Mignani Universita di Milano N CoI: Sandro Mereghetti Istituto di Fisica Cosmica del CNR N CoI: Giorgio Palumbo Universita di Bologna N CoI: Jacques Paul Service d'Astrophisique, Saclay N ------------------------------------------------------------------------------------ 6. Abstract Ground based high resolution observations of SNR 0540-69 have unveiled in H Alpha the presence of a prominent, symmetrical, "spiral like" feature centered on the young pulsar PSR 0540- 69. This feature is unique amongst the very few pulsars detected in the optical domain and does not appear to be present in the equally deep OIII and SII images of the SNR. We propose to use the resolving power of the PC on HST to map this puzzling feature in order to clarify its geometry and possibly to understand its nature as a link between the SNR and the young pulsar at its center. ------------------------------------------------------------------------------------ Observations Description ------------------------ We ask for deep PC observations using H Alpha filter. ,In order to estimate the exposure time we have used Fig. 1 as a reference. This has been obtained using a 3.5 m telescope and exposing the field for 30 min using an H Alpha filter 60 Angstrom wide. In oder to obtain with ST a clear picture of this feature using filter F656N, which is 20 Angstrom wide, we need about 1.5 h exposure time. Since the target is in the CVZ, two orbits should be enough to accomodate it together with the overheads. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 6120( 7) - 09/01/95 10:22 - [ 2] Data Distribution Media: 8MM Blocking Factor: 10 Ship To: PI_Address Ship Via: UPS Email: , ------------------------------------------------------------------------------------ 6120( 7) - 09/01/95 10:22 - [ 3] TARGET LIST a) Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 OBJ-054011- EXT-MEDIUM,SNR RA=5H 40M 11.050S +/- 0.029S, J2000 V=17.8 +/-0.1 691955 DEC=-69D 19' 55.20" +/- 0.49 " B=18.7 +/-0.1 Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) J1995.03 0.0 0.0 0.0 6120( 7) - 09/01/95 10:22 - [ 4] Visit: 01 Visit Requirements: PCS MODE F CVZ 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 OBJ-054011- WFPC2 IMAGE PC1-FIX F555W CR-SPLIT=0.5,CR 1 600S 691955 -TOLERANCE=0.2 ------------------------------------------------------------------------------------------------------------------------------------ 2 OBJ-054011- WFPC2 IMAGE PC1-FIX F656N 6563 CR-SPLIT=0.5,CR 1 1400S 691955 -TOLERANCE=0.2 ------------------------------------------------------------------------------------------------------------------------------------ 3 OBJ-054011- WFPC2 IMAGE PC1-FIX F656N 6563 CR-SPLIT=0.5,CR 1 2000S 691955 -TOLERANCE=0.2 ------------------------------------------------------------------------------------------------------------------------------------ 4 OBJ-054011- WFPC2 IMAGE PC1-FIX F658N 6590 CR-SPLIT=0.5,CR 1 2000S 691955 -TOLERANCE=0.2 ------------------------------------------------------------------------------------------------------------------------------------ 5 OBJ-054011- WFPC2 IMAGE PC1-FIX F658N 6590 CR-SPLIT=0.5,CR 1 2000S 691955 -TOLERANCE=0.2 ------------------------------------------------------------------------------------------------------------------------------------ 6120( 7) - 09/01/95 10:22 - [ 5] Summary Form for Proposal 6120 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=0.5 CR-TOLERANCE=0.2 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category Interstellar Medium ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PCS MODE F CVZ ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F555W F656N F658N ------------------------------------------------------------------------------------------------------------------------------------ Target Names OBJ-054011-691955 ------------------------------------------------------------------------------------------------------------------------------------