! ! Hubble Space Telescope Cycle 5 (1995) Phase II Proposal Template ! Id: 6093 ! ! For help call your Program Coordinator: Max Mutchler ! Phone: 410 338-1321 , E-mail: mutchler@stsci.edu Proposal_Information Title: Very High Density Clumps and Outflowing Winds in QSO Emission Line Regions Proposal_Category: GO Scientific_Category: Quasars Cycle: 5 Investigators PI_name: Dr. Jack Baldwin PI_Institution: Cerro Tololo Interamerican Observatory CoI_Name: Gary Ferland CoI_Institution: University of Kentucky Contact: ! Y or N (designate at most one contact) CoI_Name: Robert Carswell CoI_Institution: Institute of Astronomy, University of Cambridge Contact: ! Y or N (designate at most one contact) CoI_Name: Gerard Williger CoI_Institution: Max-Planck-Institut fur Astronomie, Heidelberg Contact: ! Y or N (designate at most one contact) Abstract: ! Free format text (please update) We will use HST ultraviolet spectra to test the idea that the Broad Absorption Line (BAL) regions in QSOs consist of gas being ablated off the photospheres of stars located very near (0.02pc) to the central continuum source. We have found good evidence for this in a recent detailed study of the optical spectra of several luminous high redshift quasars with unusually narrow line profiles. In one of these objects, we can distinguish kinematically between at least three distinct gas components in the Broad Lined Region. Comparison between photoionization models and the emission-line intensity ratios from each component indicates that there is an outer region lying about 1-2 pc from the continuum source which produces a more-or-less normal QSO spectrum, and then two inner regions both about 0.02 pc from the nucleus with 10x solar metallicity. One of these inner regions appears to be a 10^4 kms outflowing wind with hydrogen density n(H) = 10^11 cm^-3 and a covering factor of ~0.5. The other component has n(H) = 10^13.5 cm^-3 (nearly that of the photosphere of a main sequence star), a covering factor of about 0.1-0.2, and line widths of only 1000kms (very similar to the virial velocities of stars at the centers M87 massive galaxies like M87). It is this ultra-dense region which we identify with ablating stars. The conclusive test for a very high density/high flux environment will be the detection with FOS of certain UV lines including NeVIII 774, OIII 834 and OV 630. Questions ! Free format text (please update) Observing_Description: We will use FOS + grating G270H to take spectra of two V=17.5 mag quasars, aiming for 20:1 signal-to-noise ratio in the continuum at 2500A. We will also observe 1 of the QSOs with FOS+grating G160L going for 15:1 s:n at 1500A. Real_Time_Justification: No special requests None Calibration_Justification: ! Move appropriate text from Real_Time_Justification Additional_Comments: Fixed_Targets Target_Number: 1 Target_Name: Q0207-398 Alternate_Names: Description: GALAXY, QSO Position: RA=2H 9M 28.57S +/- 0.1S, DEC=-39D 39' 40.0" +/- 0.1", PLATE-ID=00AL Equinox: 2000 RV_or_Z: Z = 2.81 Flux: V=17.15 +/- 0.5, F(5000)=5.0 +/- 3 E-16 Comments: Coordinates measured with GASP Target_Number: 2 Target_Name: PKS2212-299 Alternate_Names: Description: GALAXY, QUASAR Position: RA=22H 15M 16.04S +/- 0.1S, DEC=-29D 44' 23.7" +/- 0.1", PLATE-ID=014I Equinox: 2000 RV_or_Z: Z = 2.70 Flux: V=17.44 +/- 0.5, B-V=0.14, F(5000)=5.0 +/- 3 E-16 Comments: Coordinates measured with GASP Visit_Number: 1 Visit_Requirements: ! Section 7.1 On_Hold_Comments: Visit_Comments: Exposure_Number: 10 ! Section 6.5 Target_Name: Q0207-398 Config: FOS/RD Opmode: ACQ/BINARY Aperture: 4.3 Sp_Element: MIRROR Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 21.S Special_Requirements: ONBOARD ACQ FOR 20 Exposure_Number: 20 ! Section 6.5 Target_Name: Q0207-398 Config: FOS/RD Opmode: ACQ/PEAK Aperture: 0.3 Sp_Element: MIRROR Wavelength: Optional_Parameters: SCAN-STEP-Y=0.11, SCAN-STEP-X=0.11, SEARCH-SIZE-Y=5, SEARCH-SIZE-X=5 Number_of_Iterations: 1 Time_Per_Exposure: 17.S Special_Requirements: ONBOARD ACQ FOR 40 Exposure_Number: 40 ! Section 6.5 Target_Name: Q0207-398 Config: FOS/RD Opmode: ACCUM Aperture: 0.5 Sp_Element: G270H Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 2736.S Special_Requirements: Exposure_Number: 60 ! Section 6.5 Target_Name: Q0207-398 Config: FOS/BL Opmode: ACCUM Aperture: 1.0-PAIR Sp_Element: G160L Wavelength: Optional_Parameters: STEP-PATT=SINGLE Number_of_Iterations: 1 Time_Per_Exposure: 2080S Special_Requirements: Exposure_Number: 70 ! Section 6.5 Target_Name: Q0207-398 Config: FOS/BL Opmode: ACCUM Aperture: 1.0-PAIR Sp_Element: G160L Wavelength: Optional_Parameters: STEP-PATT=SINGLE Number_of_Iterations: 1 Time_Per_Exposure: 2439S Special_Requirements: Comments: Visit_Number: 2 Visit_Requirements: ! Section 7.1 On_Hold_Comments: Visit_Comments: Exposure_Number: 110 ! Section 6.5 Target_Name: PKS2212-299 Config: FOS/RD Opmode: ACQ/BINARY Aperture: 4.3 Sp_Element: MIRROR Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 21.S Special_Requirements: ONBOARD ACQ FOR 120 Exposure_Number: 120 ! Section 6.5 Target_Name: PKS2212-299 Config: FOS/RD Opmode: ACQ/PEAK Aperture: 0.3 Sp_Element: MIRROR Wavelength: Optional_Parameters: SCAN-STEP-Y=0.11, SCAN-STEP-X=0.11, SEARCH-SIZE-Y=5, SEARCH-SIZE-X=5 Number_of_Iterations: 1 Time_Per_Exposure: 17.S Special_Requirements: ONBOARD ACQ FOR 140 Exposure_Number: 140 ! Section 6.5 Target_Name: PKS2212-299 Config: FOS/RD Opmode: ACCUM Aperture: 0.5 Sp_Element: G270H Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 2610S Special_Requirements: Data_Distribution ! Defaults indicated; change if desired Medium: 8MM ! 8MM or 6250BPI or 1600BPI Blocking_Factor: 10 ! 10 or 1 ! Only astronomers with very old 9- ! track tape drives should consider ! a blocking factor of 1 Ship_To: PI_Address ! STSCI or PI_Address or ! PI Address from Phase I is: ! ! P.O. Box 26732,Tucson, ! AZ 85726-6732 ! ! Ship_Via: UPS ! UPS (2-day) or OVERNIGHT ! Overnight shipping done at PI expense Recipient_Email: ! 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