! Proposal 6234, submission 1
! PI: TRAUGER, JOHN
! Received Fri Apr  7 20:33:44 EDT 1995
! From: krs@ls3.jpl.nasa.gov
Proposal_Information

   Title:               STELLAR POPULATIONS IN THE DWARF SPHEROIDAL GALAXY DRACO
   Proposal_Category:   GTO/WF2
   Scientific_Category: STELLAR POPULATIONS
   Cycle:               5


Investigators

   PI_name:             John Trauger
   PI_Institution:      JET PROPULSION LABORATORY

          CoI_Name:   Jon Holtzman
   CoI_Institution:   Lowell Observatory

          CoI_Name:   Jay Gallagher
   CoI_Institution:   University of Wisconsin

          CoI_Name:   Jeremy Mould
   CoI_Institution:   Mount Stromlo Observatory

Questions

   Observing_Description:

         We will observe the Draco dwarf spheroidal galaxy in two filters,
F606W and F814W.

   Real_Time_Justification:

   Calibration_Justification:
   Additional_Comments: 

Abstract:               

    The dwarf spheroidal galaxies may hold important clues about the
formation mechanism for galaxies. It is of crucial importance to understand
the ages of the dwarf spheroidals and how they compare with other galaxies
in the Local Group. Dwarf spheroidals are also particularly intriguing 
because of the large amount of dark matter that they are inferred to
contain from their velocity dispersions. In this program we will obtain
a moderately deep color-magnitude diagram of the Draco dwarf spheroidal.
The color-magnitude diagram will allow us to infer the star formation
history of this galaxy. The deep luminosity function, which we will determine
by adding together observations in both filters, may allow us to determine
whether the initial mass function is weighted towards low mass stars
in this dwarf spheroidal, which would have implications for the inferred
amount of dark matter in this galaxy.

Fixed_Targets

   Target_Number:       1
   Target_Name:         DRACO
   Alternate_Names:     
   Description:         GALAXY
   Position:            RA=17H 19M 20.6S +/- 0.010S,
                        DEC=57D 57' 36" +/-  0.10"
   Equinox:             J1950
   Rv_or_z:             
   Flux:                
   Comments:            

Visits

Visit_Number:           01
Visit_Requirements:     

   Exposure_number:     10
   Target_Name:         DRACO
   Config:              WFPC2
   Opmode:              IMAGE
   Aperture:            WFALl
   Sp_Element:          F606W
   Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15
   Number_of_iterations:1
   Time_Per_Exposure:   200S
   Special_Requirements:NO SPLIT

   Exposure_number:     20
   Target_Name:         DRACO
   Config:              WFPC2
   Opmode:              IMAGE
   Aperture:            WFALL
   Sp_Element:          F606W
   Optional_Parameters: CR-SPLIT=NO
   Number_of_iterations:1
   Time_Per_Exposure:   1000S
   Special_Requirements:SAME POS AS 10
			NO SPLIT

   Exposure_number:     21
   Target_Name:         DRACO
   Config:              WFPC2
   Opmode:              IMAGE
   Aperture:            WFALL
   Sp_Element:          F606W
   Optional_Parameters: CR-SPLIT=NO
   Number_of_iterations:1
   Time_Per_Exposure:   1000S
   Special_Requirements:SAME POS AS 10
			NO SPLIT

   Exposure_number:     30
   Target_Name:         DRACO
   Config:              WFPC2
   Opmode:              IMAGE
   Aperture:            WFALL
   Sp_Element:          F814W
   Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15
   Number_of_iterations:1
   Time_Per_Exposure:   200S
   Special_Requirements:SAME POS AS 10
			NO SPLIT

   Exposure_number:     40
   Target_Name:         DRACO
   Config:              WFPC2
   Opmode:              IMAGE
   Aperture:            WFALL
   Sp_Element:          F814W
   Optional_Parameters: CR-SPLIT=NO
   Number_of_iterations:1
   Time_Per_Exposure:   1100S
   Special_Requirements:SAME POS AS 10
			NO SPLIT

   Exposure_number:     41
   Target_Name:         DRACO
   Config:              WFPC2
   Opmode:              IMAGE
   Aperture:            WFALL
   Sp_Element:          F814W
   Optional_Parameters: CR-SPLIT=NO
   Number_of_iterations:1
   Time_Per_Exposure:   1300S
   Special_Requirements:SAME POS AS 10
			NO SPLIT

Data_Distribution
         Medium:        8MM
Blocking_Factor:        10          
        Ship_To:        PI_Address  
       Ship_Via:        UPS         
Recipient_Email: