6927( 4) - 01/20/97 16:44 - [ 0] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 6927 Version: 4 Check-in Date: 20-Jan-1997 16:42:10 1.Proposal Title: POLARIZATION IMAGING OF RADIO GALAXIES ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Cycle QUASARS & AGN,RADIO G GO 6 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: R. ANTONUCCI UNIVERSITY OF CALIFORNIA ------------------------------------------------------------------------------------ 6. Abstract Spectropolarimetry of the narrow line radio galaxy 3C234 was used to show in 1982 that there is a hidden broad line region occulted by an opaque torus oriented perpendicular to the radio structure axis. Given the luminosity of the reflected light, it follows that 3C234 would be called a quasar if its orientation with respect to the line of sight were different. Since then similar results were found for five Seyfert 2's. If many NLRG's are occulted quasars in the sky plane, several statistical anomalies in the beam model for superluminal motion are understandable. However, further optical spectropolarimetry has been disappointing in this regard, at least partially because of severe dilution of reflected light by starlight, sometimes polarized, from the host galaxies. We can solve this problem by observing in the UV. Furthermore, recent observations of two NLRGs have revealed OFF- NUCLEAR dust clouds reflecting and strongly "bluening" nuclear light in two NLRG's. Such dust clouds, abundant in the merger debris surrounding many luminous radio galaxies, should show up spectacularly in UV polarization images, providing information on the beam pattern and time history of nuclear emission. We request FOC polarization images of a sample of radio galaxies. We will also get for free and with high efficiency total flux images, suitable for studying the nuclei and the anomalous young stellar populations seen in merging radio galaxies from the ground. ------------------------------------------------------------------------------------ Data Distribution Media: 8MM Blocking Factor: 10 Ship To: PI_Address Ship Via: UPS Email: , ------------------------------------------------------------------------------------ 6927( 4) - 01/20/97 16:44 - [ 1] TARGET LIST a) Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 3C109 GALAXY,RADIO GALAXY RA=4H 13M 40.3S +/- 0.067S, DEC= J2000 Z = U = 19.9+/-1.0 11D 12' 14.9" +/- 1.00", PLATE- 0.3056 ID=01X0 6927( 4) - 01/20/97 16:44 - [ 2] Visit: 01 Visit Requirements: 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 3C109 FOC/96 IMAGE 512X102 F342W, PIXEL=50X25 1 606 S 4 POL0 ------------------------------------------------------------------------------------------------------------------------------------ 20 3C109 FOC/96 IMAGE 512X102 F342W, PIXEL=50X25 1 606 S 4 POL60 ------------------------------------------------------------------------------------------------------------------------------------ 30 3C109 FOC/96 IMAGE 512X102 F342W, PIXEL=50X25 1 606 S 4 POL120 ------------------------------------------------------------------------------------------------------------------------------------ 6927( 4) - 01/20/97 16:44 - [ 3] Summary Form for Proposal 6927 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FOC/96 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters PIXEL=50X25 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category QUASARS & AGN,RADIO GALAXIES ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F342W,POL0 F342W,POL60 F342W,POL120 ------------------------------------------------------------------------------------------------------------------------------------ Target Names 3C109 ------------------------------------------------------------------------------------------------------------------------------------