10553( 2) - 05/06/05 09:51 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 10553 Version: 2 Check-in Date: 06-May-2005 13:51:30 1.Proposal Title: Bipolar Scattering Structures in AGN ------------------------------------------------------------------------------------ 2. Proposal For 3. Cycle 4. Parallel Pointing Tolerance GO 14 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: Dr. Gary D. Schmidt University of Arizona CoI: Dr. Paul Smith University of Arizona N CoI: Dr. Dean C. Hines Space Science Institute N ------------------------------------------------------------------------------------ 6. Abstract The Unified Scheme for Seyfert galaxies successfully explains the basic distinctions between Type 1 and Type 2 AGN, including the existence of broad scattered lines in polarized flux spectra of the latter. However, it fails to account for the strongly polarized broad lines often observed in Type 1 AGN. We have discovered an intermediate type red QSO that exhibits polarization properties of both types; indeed it suggests a bipolar scattering geometry similar to that seen in Galactic protoplanetary nebulae. We request a small allocation with the high-resolution camera on ACS to image the object in two key spectral bands. The results will allow an unambiguous interpretation of ground-based data, and enable modeling of the inclination and opening angle that illuminates the scattering clouds. Like NGC 1068, a successful explanation of this object will not only allow further unification of AGN but also aid in unraveling the details of their inner structure. ------------------------------------------------------------------------------------ 10553( 2) - 05/06/05 09:51 - [ 2] Observations Description ------------------------ The observations are straightforward imaging, except for the proximity (7.8 arcsec E) of a V = 12 mag G star that raises concern about possible scattered light. We choose the ACS/HRC, which can yield a PSF approaching 0.03" FWHM in the blue, and the 26" FOV is ample for imaging the QSO. We wish to observe with a roll angle that orients the secondary spider diffraction spikes at least 15 degrees from E-W. Image dithering and drizzle analysis will be used to maximize resolution while removing the cosmic rays. The blue scattered component is well-sampled by the F435W filter. In the red we choose F658N. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 10553( 2) - 05/06/05 09:51 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 2MASX- GALAXY, QSO, LOBE RA=10H49M43.4000S +/- 0.1", J2000 Z = V = 18.9 J10494334+58 DEC=+58D37'50.40" +/- 0.1" 0.115 37501 Coordinate Source: Other_Source: NED Comments: This object was generated by the targetselector and retrieved from the NED database. 10553( 2) - 05/06/05 09:51 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type ACS-HRC-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.15 Line_Spacing 0.098 Coordinate_Frame POS-TARG Pattern_Orient 19.89 Angle_Between_Sides 63.5 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 10553( 2) - 05/06/05 09:51 - [ 5] Visit: 01 Visit Priority: Visit Requirements: ORIENT 15.0D TO 75.0 D; ORIENT 105.0D TO 165.0 D; ORIENT 195.0D TO 255.0 D; ORIENT 285.0D TO 345.0 D 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 2MASX-J1049 ACS/HRC ACCUM HRC F658N 1 910 S PATTERN 1 1-2 4334+583750 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 2MASX-J1049 ACS/HRC ACCUM HRC F435W 1 325 S 4334+583750 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ 2MASX-J10494334+58 1 ACS/HRC ACCUM HRC F658N 1 none none 1 1 N/A 37501 2MASX-J10494334+58 1 ACS/HRC ACCUM HRC F658N 1 none none 2 1 N/A 37501 2MASX-J10494334+58 1 ACS/HRC ACCUM HRC F658N 2 none none 1 1 N/A 37501 2MASX-J10494334+58 1 ACS/HRC ACCUM HRC F658N 2 none none 2 1 N/A 37501 2MASX-J10494334+58 1 ACS/HRC ACCUM HRC F658N 3 none none 1 2 N/A 37501 2MASX-J10494334+58 1 ACS/HRC ACCUM HRC F658N 3 none none 2 2 N/A 37501 2MASX-J10494334+58 1 ACS/HRC ACCUM HRC F658N 4 none none 1 2 N/A 37501 2MASX-J10494334+58 1 ACS/HRC ACCUM HRC F658N 4 none none 2 2 N/A 37501 2MASX-J10494334+58 2 ACS/HRC ACCUM HRC F435W 1 none none 1 1 N/A 37501 2MASX-J10494334+58 2 ACS/HRC ACCUM HRC F435W 1 none none 2 1 N/A 37501 2MASX-J10494334+58 2 ACS/HRC ACCUM HRC F435W 2 none none 1 1 N/A 37501 2MASX-J10494334+58 2 ACS/HRC ACCUM HRC F435W 2 none none 2 1 N/A 37501 2MASX-J10494334+58 2 ACS/HRC ACCUM HRC F435W 3 none none 1 2 N/A 37501 10553( 2) - 05/06/05 09:51 - [ 6] 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 | ------------------------------------------------------------------------------------------------------------------------------------ 2MASX-J10494334+58 2 ACS/HRC ACCUM HRC F435W 3 none none 2 2 N/A 37501 2MASX-J10494334+58 2 ACS/HRC ACCUM HRC F435W 4 none none 1 2 N/A 37501 2MASX-J10494334+58 2 ACS/HRC ACCUM HRC F435W 4 none none 2 2 N/A 37501 10553( 2) - 05/06/05 09:51 - [ 7] Summary Form for Proposal 10553 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures HRC ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/HRC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 15.0D TO 75.0 D; ORIENT 105.0D TO 165.0 D; ORIENT 195.0D TO 255.0 D; ORIENT 285.0D TO 345.0 D PATTERN 1 1-2 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F658N F435W ------------------------------------------------------------------------------------------------------------------------------------ Target Names 2MASX-J10494334+5837501 ------------------------------------------------------------------------------------------------------------------------------------