! Hubble Space Telescope Cycle 5 (1995) Phase II Proposal Template
! $Id: 5815,v 1.1 1994/12/14 19:47:33 pepsa Exp $
!
!   Refer to the HST Phase II Proposal Instructions to fill this out
!
!   Anything after a "!" is ignored, and may be deleted
!
!   All keywords with multiple entries are comma delimited except the
!   Visit_Requirements and Special_Requirements keywords which can be
!   delimited with carriage returns or semi-colons, but not commas
!
! For help call your Program Coordinator: n/a
!             Phone: n/a             , E-mail: n/a
!
! This partially completed template was generated from a Phase I proposal.
! Name of Phase I Proposal: turnshek-704.prop
! Date generated: Wed Dec 14 14:47:24 EST 1994
!

Proposal_Information                           ! Section 4
              Title:  An HST-FOS Archival Investigation of the
                      Origin of the NV Emission in QSO Spectra
  Proposal_Category:  AR
Scientific_Category:  Quasars
             Cycle:    5

Investigators
     PI_name:         David Turnshek
     PI_Institution:  Dept. of Physics & Astronomy,   \ University
                      of Pittsburgh


Abstract:                                ! Free format text (please update)
    -0.1 truein The nature of the NV emission lines observed in
    QSO spectra is unclear.  In most models the bulk of the NV
    emission is assumed to be created by collisional excitation.
    However, observational constraints derived from the study of
    Broad Absorption Line (BAL) QSOs are consistent with the bulk
    of the NV emission being created by resonance line scattering.
    In the resonance line scattering model a BAL region covering
    factor averaging ~ 0.1 is large enough to create observable NV
    emission in both BAL QSOs and non-BAL QSOs.  Enhanced NV
    emission is produced by this process because the
    NVLambdaLambda1238,1242 BALs scatter inner LyAlpha emission
    photons in addition to the continuum photons.  We propose an
    HST-FOS archival study of > 100 QSO spectra which will enable
    us to distinguish between these two possibilities based on the
    measurement of specific emission lines.  If collisional
    excitation in a photoionized gas is the dominant mechanism for
    the production of NV, then the NV emission-line strength
    should be correlated with the HeII and probably the CIV
    emission-line strengths since these lines are formed in the
    same region.  Alternatively, if resonance line scattering is
    the dominant mechanism for the production of NV, then the NV
    emission-line strength should depend on the strength of the
    (inner) LyAlpha broad emission line, the maximum outflow
    velocity of the BAL region gas (which we assume is correlated
    with the broad emission line FWHM to first order), and the BAL
    region covering factor (which we assume is ~ 0.1 to first
    order).

Questions                       ! Free format text (please update)

     Observing_Description:

   Real_Time_Justification:



Calibration_Justification:              ! Move appropriate text from Real_Time_Justification

      Additional_Comments:


Fixed_Targets                           ! Section 5.1
  Target_Number:
    Target_Name:
Alternate_Names:
    Description:
       Position:                        ! Most common specification format is
                                        ! RA=0H 0M 0.00S +/- 0S,
                                        ! DEC=0D 0' 0.0" +/- 0",
                                        ! PLATE-ID=0000
        Equinox:
        RV_or_Z:
          RA_PM:                        ! Units are seconds of time per year
         Dec_PM:                        ! Units are seconds of arc per year
          Epoch:
Annual_Parallax:
           Flux:                        ! Include at least V and B-V
       Comments:


Solar_System_Targets                    ! Section 5.2
  Target_Number:
    Target_Name:
    Description:
        Level_1:                        ! Satellite of Sun
        Level_2:                        ! Satellite of Level_1
        Level_3:                        ! Satellite of Level_2
         Window:
           Flux:                        ! Include at least V and B-V
       Comments:


Generic_Targets                         ! Section 5.3
  Target_Number:
    Target_Name:
    Description:
       Criteria:
           Flux:
       Comments:


Scan_Data                               ! Appendix B
    Scan_Number:
       FGS_Scan:
  Cont_or_Dwell:
   Dwell_Points:
     Dwell_Secs:
     Scan_Width:
    Scan_Length:
    Sides_Angle:
   Number_Lines:
      Scan_Rate:
  First_Line_PA:
     Scan_Frame:
  Length_Offset:
   Width_Offset:


! This is a template for a single visit containing a single exposure
! Repeat exposure and visit blocks as needed

Visits                                  ! Section 6
      Visit_Number:
Visit_Requirements:                     ! Section 7.1

! Uncomment or copy visit level special requirements needed
! Most of these requirements (including ORIENT) will limit scheduling

        ! PCS MODE [Fine | Gyro]
        ! GUIDing TOLerance <angle>
        ! ORIENTation <angle1> TO <angle2>
        ! ORIENTation <angle1> TO <angle2> FROM <visit>
        ! ORIENTation <angle1> TO <angle2> FROM NOMINAL
        ! SAME ORIENTation AS <visit>
        ! CVZ
        ! PARallel
        ! AFTER <visit> [BY <time1> [TO <time2>]]
        ! AFTER <date>
        ! BEFORE <date>
        ! BETWEEN <date1> AND <date2>
        ! GROUP <visit-list> WITHIN <time>
        ! PERIOD <time> AND ZERO-PHASE <date>
        ! SEQ <visit-list> WITHIN <time>
        ! ON HOLD [FOR <visit>]

  On_Hold_Comments:
    Visit_Comments:

     Exposure_Number:                   ! Section 6.5
         Target_Name:
              Config:
              Opmode:
            Aperture:
          Sp_Element:
          Wavelength:
 Optional_Parameters:
Number_of_Iterations:
   Time_Per_Exposure:
Special_Requirements:                   ! Section 7.2

! Uncomment or copy exposure level special requirements needed

        ! INTeractive ACQuisition FOR <exp-list>
        ! ONBOARD ACQuisition FOR <exp-list>
        ! POSition TARGet <x-value>,<y-value>
        ! SAME POSition AS <exp>
        ! DO FOR TARGets <targ-list>    ! FGS only
        ! PARallel WITH <exp>
        ! GROUP-FGS <exp-list> WITHIN <time>
        ! SPATIAL SCAN <#> [<exp-list> | SINGLE-EXP ]
        ! RT ANALYSIS [FOR <exp-list>]
        ! REQuires UPLINK
        ! DARK TIME
        ! END ORBIT
        ! EXPAND
        ! MAXimum DURation [<time> | <%>]
        ! MINimum DURation [<time> | <%>]
        ! NO SPLIT
        ! PHASE <number1[0,1]> TO <number2[0,1]>
        ! SEQuence <exp-list> NON-INTerruptible

            Comments:

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 <free-text>
                                        ! PI Address from Phase I is:
                                        !
                                                 !  Pittsburgh, PA 15260
                                        !
                                        !
       Ship_Via:        UPS             ! UPS (2-day) or OVERNIGHT
                                        ! Overnight shipping done at PI expense

Recipient_Email:                        ! Needed if Ship_To: is not PI_Address
                                        ! <free-text>

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! Please send a list of your likes and dislikes to your Program Coordinator