9279( 2) - 08/13/01 08:23 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 9279 Version: 2 Check-in Date: 13-Aug-2001 08:22:32 1.Proposal Title: Resolving the Warm Absorber in NGC 5548 ------------------------------------------------------------------------------------ 2. Proposal For 3. Cycle GO 10 ------------------------------------------------------------------------------------ 4. Investigators Contact? PI: Jelle Kaastra Space Research Organization Netherlands CoI: D. Michael Crenshaw Georgia State University Y ------------------------------------------------------------------------------------ 5. Abstract We propose to map the ionization and velocity structure of the X-ray and UV absorbers in NGC 5548 with the LETGS and HETGS of Chandra and STIS/HST. NGC 5548 is an important target for this kind of study because 1) it shows multiple kinematic components in the UV characterized by a range in ionization parameter and effective column, 2) it shows evidence for multiple kinematic and ionization components in previous Chandra X-ray spectra, and 3) it has a low Galactic column, which permits coverage of spectral lines out to 80 Angstrom with the LETGS. These data yield the ionization parameter and column density of density of the absorption-line regions as a function of radial velocity, and constrain the elemental abundances and shape of the observered EUV continuum. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will obtain E140M and E230M spectra of the nucleus. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- To be coordinated with simultaneous Chandra observations. ------------------------------------------------------------------------------------ 9279( 2) - 08/13/01 08:23 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC5548 GALAXY, SEYFERT RA=14H 17M 59.57S +/- 0.05S, J2000 V = 13.5 DEC=25D 8' 12.3" +/- 0.5", PLATE -ID=01TM Coordinate Source: GUIDE_STAR_CATALOG 9279( 2) - 08/13/01 08:23 - [ 3] Visit: 01 Visit Priority: Visit Requirements: SCHED 100% ON HOLD On Hold Comments: On hold for coordinated HST/Chandra scheduling. Additional Comments: To be coordinated with simulaneous Chandra observations. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 NGC5548 STIS/C ACQ F28X50L MIRROR 1 1.0 S CD P ------------------------------------------------------------------------------------------------------------------------------------ 20 NGC5548 STIS/F ACCUM 0.2X0.2 E140M 1425 1 2200 S UV-MAM A ------------------------------------------------------------------------------------------------------------------------------------ 30 NGC5548 STIS/F ACCUM 0.2X0.2 E140M 1425 1 2700 S UV-MAM A ------------------------------------------------------------------------------------------------------------------------------------ 40 NGC5548 STIS/F ACCUM 0.2X0.2 E140M 1425 1 2700 S UV-MAM A ------------------------------------------------------------------------------------------------------------------------------------ 50 NGC5548 STIS/N ACCUM 0.2X0.2 E230M 2707 1 2700 S UV-MAM A ------------------------------------------------------------------------------------------------------------------------------------ 9279( 2) - 08/13/01 08:23 - [ 4] Visit: 02 Visit Priority: Visit Requirements: SCHED 100% ON HOLD On Hold Comments: On hold for coordinated HST/Chandra scheduling. Additional Comments: To be coordinated with simulaneous Chandra observations. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 NGC5548 STIS/C ACQ F28X50L MIRROR 1 1.0 S CD P ------------------------------------------------------------------------------------------------------------------------------------ 20 NGC5548 STIS/F ACCUM 0.2X0.2 E140M 1425 1 2200 S UV-MAM A ------------------------------------------------------------------------------------------------------------------------------------ 30 NGC5548 STIS/F ACCUM 0.2X0.2 E140M 1425 1 2700 S UV-MAM A ------------------------------------------------------------------------------------------------------------------------------------ 40 NGC5548 STIS/F ACCUM 0.2X0.2 E140M 1425 1 2700 S UV-MAM A ------------------------------------------------------------------------------------------------------------------------------------ 50 NGC5548 STIS/N ACCUM 0.2X0.2 E230M 1978 1 2700 S UV-MAM A ------------------------------------------------------------------------------------------------------------------------------------ 9279( 2) - 08/13/01 08:23 - [ 5] Summary Form for Proposal 9279 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures F28X50LP 0.2X0.2 ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD STIS/FUV-MAMA STIS/NUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements SCHED 100% ON HOLD ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR E140M E230M ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC5548 ------------------------------------------------------------------------------------------------------------------------------------ Wavelengths 1425 2707 1978 ------------------------------------------------------------------------------------------------------------------------------------