! Proposal 5998, submission 2
! PI: Philip Massey
! Received Wed May  3 12:55:57 EDT 1995
! From: sleiman@stsci.edu
! For help call your Program Coordinator: Giselle Sleiman
!             Phone: 410 338-4753    , E-mail: sleiman@stsci.edu

Proposal_Information                           ! Section 4
              Title:  The Evolution of Massive Stars: Closing
                      the Loop Observationally in the Local
                      Group
  Proposal_Category:  GO
Scientific_Category:  Stellar Populations
             Cycle:    5

Investigators
     PI_name:         Philip Massey
     PI_Institution:  National Optical Astronomy Observatories


Abstract:                                ! Free format text (please update)
    We are proposing to use OB associations in M31, M33, and NGC
    6822 to determine how stellar evolution proceeds for high mass
    stars.  What mass range turns into Wolf-Rayet stars rather
    than red supergiants?  What is the evolutionary link between
    WN and WC stars?  How are answers to these questions affected
    by metallicity?  Over the past decade we have completed
    surveys of Wolf-Rayet stars in selected OB associations of
    these three galaxies.  We also have data for determining the
    red supergiant content of these same regions.  Although we
    have obtained UBV CCD data under subarcsecond conditions, and
    have extensive optical spectroscopy for the bluest stars, our
    interpretation of our HRDs is stymied by our inability to
    distinguish three crowded 40Mo of similar effective
    temperature from a single 90Mo star.  We need the
    10* improvement in resolving power (compared to our best
    ground-based efforts) offered by the refurbished HST.

Questions                       ! Free format text (please update)

     Observing_Description:
         We plan a single visit per OB association, which we will then
     observe in the F555W, F439W, and F336W filters.  Our exposure
     times will be 160s, 2x400s, and 2x400s, respectively.  Our
     observations through the F555W filter will be observed at the
     higher gains setting (ATD-GAIN=15) to prevent saturation on the
     brightest stars of interest.  


   Real_Time_Justification:
         None.


Calibration_Justification: 
         None.

      Additional_Comments:
         We are specifying the target position to put the most crowded
         and interesting region on PC1, and then providing a range of
         acceptable ORIENTation angles to get as much of the OB
         association on the three WF chips as possible.  The RPS2 software
         shows that all of these can be scheduled; if the reduction in
         scheduling flexibility (or problem with guide stars) renders
         any of these unschedulable in practice, than I will have
         to specify aternative pointings to retain most of the field
         of interest.

Fixed_Targets                           ! Section 5.1

  Target_Number:1
    Target_Name:M33-FLD1
Alternate_Names:M33-OB21
    Description:EXT-CLUSTER, OB Association
       Position:  RA=01H 32M 56.13S +/- 1.0",
                  DEC=30D 34' 37.5" +/- 1.0",
                  PLATE-ID=00DV
        Equinox:2000
       Flux: V=14.0, B-V=0.0            ! Include at least V and B-V
       Comments: Target position is for PC1 and orient angle of 155D-206D

  Target_Number:2
    Target_Name:M33-FLD3
Alternate_Names:M33-OB112
    Description:EXT-CLUSTER, OB Association
       Position:  RA=01H 33M 38.97S +/- 1.0",
                  DEC=30D 21' 00.9" +/- 1.0",
                  PLATE-ID=00DV
        Equinox:2000
       Flux: V=14.0, B-V=0.0            ! Include at least V and B-V
       Comments: Target position is for PC1 and orient angle of 180D-305D

  Target_Number:3
    Target_Name:M33-FLD4
Alternate_Names:M33-OB12
    Description:EXT-CLUSTER, OB Association
       Position:  RA=01H 33M 39.17S +/- 1.0",
                  DEC=30D 31' 31.5" +/- 1.0",
                  PLATE-ID=00DV
        Equinox:2000
       Flux: V=14.0, B-V=0.0            ! Include at least V and B-V
       Comments: Target position is for PC1 and orient angle of 161D-260D

  Target_Number:4
    Target_Name:M33-FLD6
Alternate_Names:M33-OB4
    Description:EXT-CLUSTER, OB Association
       Position:  RA=01H 33M 59.03S +/- 1.0",
                  DEC=30D 34' 24.7" +/- 1.0",
                  PLATE-ID=00DV
        Equinox:2000
       Flux: V=14.0, B-V=0.0            ! Include at least V and B-V
       Comments: Target position is for PC1 and orient angle of 54D-74D


  Target_Number:5
    Target_Name:M33-FLD8
Alternate_Names:M33-OB88
    Description:EXT-CLUSTER, OB Association
       Position:  RA=01H 35M 03.00S +/- 1.0",
                  DEC=30D 41' 22.8" +/- 1.0",
                  PLATE-ID=00DV
        Equinox:2000
       Flux: V=14.0, B-V=0.0            ! Include at least V and B-V
       Comments: Target position is for WFALL-FIX and orient angle of 97D-122D

  Target_Number:6
    Target_Name:M33-FLD7
Alternate_Names:M33-OB66
    Description:EXT-CLUSTER, OB Association
       Position:  RA=01H 33M 47.60S +/- 1.0",
                  DEC=30D 44' 15.1" +/- 1.0",
                  PLATE-ID=00DV
        Equinox:2000
       Flux: V=14.0, B-V=0.0            ! Include at least V and B-V
       Comments: Target position is specified
for WFALL-FIX and orient angle of 155D-205D

 
  Target_Number:7
    Target_Name:M33-FLD2
Alternate_Names:M33-OB127
    Description:EXT-CLUSTER, OB Association
       Position:  RA=01H 33M 14.54S +/- 1.0",
                  DEC=30D 29' 54.8" +/- 1.0",
                  PLATE-ID=00DV
        Equinox:2000
       Flux: V=14.0, B-V=0.0            ! Include at least V and B-V
     Comments: Target position is for PC1 and orient angle of 40D-100D

  Target_Number:8
    Target_Name:M31-OB69
Alternate_Names:
    Description:EXT-CLUSTER, OB Association
       Position:  RA=00H 40M 58.00S +/- 1.0",
                  DEC=41D 03' 12.8" +/- 1.0",
                  PLATE-ID=0738
        Equinox:2000
       Flux: V=14.0, B-V=0.0            ! Include at least V and B-V
       Comments: Target position is for PC1 and orient angle of 190D-223D

Visits                                  ! Section 6
      Visit_Number:1
Visit_Requirements:  ORIENT 155D TO 206D                  ! Section 7.1

     Exposure_Number: 1                  ! Section 6.5
         Target_Name: M33-FLD1
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F555W
Optional_Parameters: ATD-GAIN=15
Number_of_Iterations:1
   Time_Per_Exposure:160S

     Exposure_Number: 2                  ! Section 6.5
         Target_Name: M33-FLD1
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F336W
Optional_Parameters: ATD-GAIN=7
Number_of_Iterations:1
   Time_Per_Exposure:800S

     Exposure_Number: 3                  ! Section 6.5
         Target_Name: M33-FLD1
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F439W
Optional_Parameters: ATD-GAIN=7
Number_of_Iterations:1
   Time_Per_Exposure:800S


      Visit_Number:2
Visit_Requirements:  ORIENT 180D TO 305D                  ! Section 7.1

    Exposure_Number: 1                  ! Section 6.5
         Target_Name: M33-FLD3
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F555W
Optional_Parameters: ATD-GAIN=15
Number_of_Iterations:1
   Time_Per_Exposure:160S

     Exposure_Number: 2                  ! Section 6.5
         Target_Name: M33-FLD3
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F336W
Optional_Parameters: ATD-GAIN=7
Number_of_Iterations:1
   Time_Per_Exposure:800S

     Exposure_Number: 3                  ! Section 6.5
         Target_Name: M33-FLD3
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F439W
 Optional_Parameters: ATD-GAIN=7
Number_of_Iterations:1
   Time_Per_Exposure:800S

 
      Visit_Number:3
Visit_Requirements:  ORIENT 161D TO 260D                  ! Section 7.1

    Visit_Comments: Prefer orientation near 194D

    Exposure_Number: 1                  ! Section 6.5
         Target_Name: M33-FLD4
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F555W
Optional_Parameters: ATD-GAIN=15
Number_of_Iterations:1
   Time_Per_Exposure:160S

     Exposure_Number: 2                  ! Section 6.5
         Target_Name: M33-FLD4
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F336W
Optional_Parameters: ATD-GAIN=7
Number_of_Iterations:1
   Time_Per_Exposure:800S

     Exposure_Number: 3                  ! Section 6.5
         Target_Name: M33-FLD4
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F439W
Optional_Parameters: ATD-GAIN=7
Number_of_Iterations:1
   Time_Per_Exposure:800S

 
      Visit_Number:4
Visit_Requirements:  ORIENT 54D TO 74D                  ! Section 7.1

    Visit_Comments: Prefer orientation near 63D

     Exposure_Number: 1                  ! Section 6.5
         Target_Name: M33-FLD6
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F555W
Optional_Parameters: ATD-GAIN=15
Number_of_Iterations:1
   Time_Per_Exposure:160S

     Exposure_Number: 2                  ! Section 6.5
         Target_Name: M33-FLD6
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F336W
Optional_Parameters: ATD-GAIN=7
Number_of_Iterations:1
   Time_Per_Exposure:800S

     Exposure_Number: 3                  ! Section 6.5
         Target_Name: M33-FLD6
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F439W
Optional_Parameters: ATD-GAIN=7
Number_of_Iterations:1
   Time_Per_Exposure:800S


      Visit_Number: 5
Visit_Requirements:  ORIENT 155D TO 205D                  ! Section 7.1

     Exposure_Number: 1                  ! Section 6.5
         Target_Name: M33-FLD7
              Config:WFPC2
              Opmode:IMAGE
            Aperture:WFALL-FIX
          Sp_Element:F555W
Optional_Parameters: ATD-GAIN=15
Number_of_Iterations:1
   Time_Per_Exposure:160S

     Exposure_Number: 2                  ! Section 6.5
         Target_Name: M33-FLD7
              Config:WFPC2
              Opmode:IMAGE
            Aperture:WFALL-FIX
          Sp_Element:F336W
Optional_Parameters: ATD-GAIN=7
Number_of_Iterations:1
   Time_Per_Exposure:800S

     Exposure_Number: 3                  ! Section 6.5
         Target_Name: M33-FLD7
              Config:WFPC2
              Opmode:IMAGE
            Aperture:WFALL-FIX
          Sp_Element:F439W
Optional_Parameters: ATD-GAIN=7
Number_of_Iterations:1
   Time_Per_Exposure:800S


      Visit_Number: 6
Visit_Requirements:  ORIENT 97D TO 122D                  ! Section 7.1
    Visit_Comments: Prefer orientation near 108D

     Exposure_Number:1                  ! Section 6.5
         Target_Name: M33-FLD8
              Config:WFPC2
              Opmode:IMAGE
            Aperture:WFALL-FIX
          Sp_Element:F555W
Optional_Parameters: ATD-GAIN=15
Number_of_Iterations:1
   Time_Per_Exposure:160S

     Exposure_Number: 2                  ! Section 6.5
         Target_Name: M33-FLD8
              Config:WFPC2
              Opmode:IMAGE
            Aperture:WFALL-FIX
          Sp_Element:F336W
Optional_Parameters: ATD-GAIN=7
Number_of_Iterations:1
   Time_Per_Exposure:800S

     Exposure_Number: 3                  ! Section 6.5
         Target_Name: M33-FLD8
              Config:WFPC2
              Opmode:IMAGE
            Aperture:WFALL-FIX
          Sp_Element:F439W
Optional_Parameters: ATD-GAIN=7
Number_of_Iterations:1
   Time_Per_Exposure:800S


     Visit_Number: 7 
Visit_Requirements:  ORIENT 40D TO 100D                 ! Section 7.1
    Visit_Comments:
     Exposure_Number: 1                  ! Section 6.5
         Target_Name: M33-FLD2
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F555W
Optional_Parameters: ATD-GAIN=15
Number_of_Iterations:1
   Time_Per_Exposure:160S

     Exposure_Number: 2                  ! Section 6.5
         Target_Name: M33-FLD2
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F336W
Optional_Parameters: ATD-GAIN=7
Number_of_Iterations:1
   Time_Per_Exposure:800S

     Exposure_Number: 3                  ! Section 6.5
         Target_Name: M33-FLD2
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F439W
Optional_Parameters: ATD-GAIN=7
Number_of_Iterations:1
   Time_Per_Exposure:800S

      Visit_Number: 8
Visit_Requirements:  ORIENT 190D TO 223D                 ! Section 7.1
    Visit_Comments: 

     Exposure_Number:1                  ! Section 6.5
         Target_Name: M31-OB69
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F555W
Optional_Parameters: ATD-GAIN=15
Number_of_Iterations:1
   Time_Per_Exposure:170S

     Exposure_Number: 2                  ! Section 6.5
         Target_Name: M31-OB69
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F336W
Optional_Parameters: ATD-GAIN=7
Number_of_Iterations:1
   Time_Per_Exposure:800S

     Exposure_Number: 3                  ! Section 6.5
         Target_Name: M31-OB69
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F439W
Optional_Parameters: ATD-GAIN=7
Number_of_Iterations:1
   Time_Per_Exposure:800S

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

                                        !
                                        !
       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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