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    PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS   ST ScI Use Only
                                                       ID 5490
                                                       Report Date: 18-Jul-95:17:31
                                                       Version: **********
                                                       Check-in Date: **********

1.Proposal Title:
EXPOSING THE EVOLUTION OF DISTANT FIELD GALAXIES:IMAGING IN MID-UV  AND NEAR-IR OF A
CONTROLLED REDSHIFT SURVEY WITH 0.2<Z<0.8.
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2. Scientific Category   3. Proposal For  4. Proposal Type        5. Continuation ID
GALAXIES & CLUSTERS         GO                                       <none>
Sub Category
EVOLUTION/COSMOSLOGY
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6. Principal Investigator   Institution                    Country    Telephone
 Thomas J. Broadhurst       THE JOHNS HOPKINS UNIVERSITY   USA        (410) 516-4120

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7. Abstract
HST will be able to reveal the morphologies and UV properties of the general galaxy
population at cosmological distances. This data is fundamental to our understanding
of galaxy evolution, it is inaccessible from the ground, and will convincingly
descriminate between the current models of evolution. Although this data is
essential for settling the major questions about evolution it has not yet been
forthcoming from the HST. By targeting our deepest redshift survey we can
immediately relate the precious high resolution image information to redshift.  The
aim of this proposal is to establish the general morphologies and the frequency of
interacation at <z>=0.5 from the images in the I band, and to use UV images to
derive the redshift dependence of star formation and its location in galaxies. Our
redshift survey is complete to B=24 for 142 galaxies with 0.2<z<0.8, and BVRIK mags.
The galaxies are in strips of 2'x10' matched to the width of the WFPC2 field,
corresponding to a factor 14 saving in TIME over an equivalent unconcentrated sample
or only 11.7 hours of imaging. We have combined our experience of analysing WFPC1
images in the presence of the high cosmic ray count in space, uneven A2D behaviour,
together with our knowledge of the selection effects operating at faint magnitudes,
to make maximum likelihood estimates of the image parameters we can expect to derive
with WFPC2.
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9. Est obs time (hours) pri: 25.00    par: 0       10. Num targs pri: 6      par: 0
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11. Instruments requested:  WF/PC
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                                                                  Page   2
I. GENERAL FORM    Proposal 5490
PI:  Thomas J. Broadhurst
Proposal Title:
EXPOSING THE EVOLUTION OF DISTANT FIELD GALAXIES:IMAGING IN MID-UV  AND NEAR-IR OF A
CONTROLLED REDSHIFT SURVEY WITH 0.2<Z<0.8.
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1. Proposers:
Proposers                        Institution                       Country       ESA
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 Tom J. Broadhurst               THE JOHNS HOPKINS UNIVERSITY      USA
 Matthew Colless                 MOUNT STROMLO OBSERVATORY         AUSTRALIA
 Richard Ellis                   INSTITUTE OF ASTROPHYSICS,        ENGLAND
                                 CAMBRIDGE
 Mauro Giavalisco                STSCI                             USA
 Karl Glazebrook                 INSTITUTE OF ASTROPHYSICS,        ENGLAND
                                 CAMBRIDGE
 Richard Griffiths               THE JOHNS HOPKINS UNIVERSITY      USA
 Kavan Ratnatunga                THE JOHNS HOPKINS UNIVERSITY      USA
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  3. Description of proposed observations.
  We have asked for imaging in 3 filters in 6 positions, so that there are 3
 images in F225W, 2 image in F336W and 5 images in F814W. The 6 positions are in
 two close groups of 3 positions, i.e. 2 fields which are 3 hours apart in RA. We
 would request all images to be offset by 0.5'' in both RA and DEC, respectively,
 to avoid bad pixels and/or columns. There is no requirement that the images in
 different positions be taken consecutively but it would be preferable to have all
 the exposures at one position taken at the same tame since specific orientations
 have been asked for at each position.
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  4. Justification of need for HST observations.
  Image information is required on a scale less than 0.5" in order to establish
 the radial sizes of any dwarfs in our survey and for deriving accurate radial
 profiles. The UV work can only be done from space with the HST.
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 10. Resources to be supplied by investigator's institution(s).
  The Johns Hopkins University and the Space Telescope Science Institute provide
 all the facilities, either hardware (Unix and Vax computers) and software (e.g.
 the IRAF-STSDAS package) to succesfully carry out the data reduction and
 analysis.
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11. Address Information
Name:  TOM J. BROADHURST                                   Category: PI
Institution: 2380
Address:  THE  JOHNS HOPKINS UNIVERSITY
          DEPT. OF PHYSICS AND ASTRONOMY
          NORTH CHARLES STREET
City: BALTIMORE                                 State: MD
Zip Code: 21218                                 Country: USA
Telephone: (410) 516-4120
Telex (or e-mail): TJB@OPUS.PHA.JHU.EDU
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Name:                                                      Category: CON
Institution:
Address:
City:                                           State:
Zip Code:                                       Country:
Telephone:
Telex (or e-mail):
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TARGET LIST    a) Fixed Targets                                                                    ID = 5490             [  4]
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 1 |     2      |           3           |              4             |  5     |   6    |  7  |              8
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Tar|   Target   |         Target        |            Target          |Coord   | Radial |Acqui|FLX|     Flux data
No |    Name    |       Description     |           Position         |Eqnx    |  Vel.  |Prblm|REF|
   |            |                       |                            |        |        |     |   |
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1   10HR-A       E,325,F,413             RA=10H 44M 02.5S +/- 0.2S,   1950                    1   SURF(V) = 25.0 +/- 1.0
                                         DEC=+0D 5' 08" +/- 3",
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2   10HR-B       E,325,F,413             RA=10H 43M 58.38S +/- 0.2S,  1950                    1   SURF(V) = 25.0 +/- 1.0
                                         DEC=+0D 2' 27" +/- 3",
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3   10HR-C       E,325,F,413             RA=10H 43M 55.8S +/- 0.2S,   1950                    1   SURF(V) = 25.0 +/- 1.0
                                         DEC=+0D 8' 16" +/- 3",
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4   13HR-A       E,325,F,413             RA=13H 41M 44.52S +/- 0.2S,  1950                    1   SURF(V) = 25.0 +/- 1.0
                                         DEC=+0D 3' 45" +/- 3",
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5   13HR-B       E,325,F,413             RA=13H 41M 45.65S +/- 0.2S,  1950                    1   SURF(V) = 25.0 +/- 1.0
                                         DEC=+0D 6' 48" +/- 3",
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6   13HR-C       E,325,F,413             RA=13H 41M 43.84S +/- 0.2S,  1950                    1   SURF(V) = 25.0 +/- 1.0
                                         DEC=+0D 10' 28.3" +/- 3",
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EXPOSURE LOGSHEET                                                                                  ID = 5490             [  5]
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 1      |   2   |      3    |  4   |   5   |   6   |    7   |   8   |       9       |10 |   11  |   12    |13 |14|        15
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  Line  |  Seq  |   Target  |Instr | Oper. | Aper  |Spectral|Central|   Optional    |Num|  Time |   S/N   |Flx|Pr|     Special
 Number | Name  |    Name   |Config| Mode  |or FOV |Element |Waveln.|  Parameters   |Exp|       |Rel. Time|Ref|  |   Requirements
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1        DEFINE  #           WFPC2  IMAGE   WF3-FIX F814W            CR-SPLIT=NO     1   1800S   10        1   1  CYCLE 4
         EXPOS                                                                                                    SEQ 1.0-3.2 NO GAP
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1.1      DEFINE  #           WFPC2  IMAGE   WF3-FIX F814W            CR-SPLIT=NO     1   1000S   10        1   1  CYCLE 4
         EXPOS                                                                                                    POS TARG +0.5,
                                                                                                                  +0.5
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1.2      DEFINE  #           WFPC2  IMAGE   WF3-FIX F814W            CR-SPLIT=NO     1   1000S   10        1   1  CYCLE 4
         EXPOS                                                                                                    POS TARG +0.5, -
                                                                                                                  0.5
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1.3      DEFINE  #           WFPC2  IMAGE   WF3-FIX F814W            CR-SPLIT=NO     1   1000S   10        1   1  CYCLE 4
         EXPOS                                                                                                    POS TARG -0.5, -
                                                                                                                  0.5
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1.4      DEFINE  #           WFPC2  IMAGE   WF3-FIX F814W            CR-SPLIT=NO     1   1000S   10        1   1  CYCLE 4
         EXPOS                                                                                                    POS TARG -0.5,
                                                                                                                  +0.5
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2        DEFINE  #           WFPC2  IMAGE   WF3-FIX F380W            CR-SPLIT=NO     1   1000S   10        1   1  CYCLE 4
         EXPOS
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2.1      DEFINE  #           WFPC2  IMAGE   WF3-FIX F380W            CR-SPLIT=NO     1   1000S   10        1   1  CYCLE 4
         EXPOS                                                                                                    POS TARG +0.5,+0.5
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2.2      DEFINE  #           WFPC2  IMAGE   WF3-FIX F380W            CR-SPLIT=NO     1   1000S   10        1   1  CYCLE 4
         EXPOS                                                                                                    POS TARG -0.5,+0.5
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3        DEFINE  #           WFPC2  IMAGE   WF3-FIX F380W            CR-SPLIT=NO     1   1000S   10        1   1  CYCLE 4
         EXPOS
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3.1      DEFINE  #           WFPC2  IMAGE   WF3-FIX F380W            CR-SPLIT=NO     1   1000S   10        1   1  CYCLE 4
         EXPOS                                                                                                    POS TARG +0.5,
                                                                                                                  +0.5
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3.2      DEFINE  #           WFPC2  IMAGE   WF3-FIX F380W            CR-SPLIT=NO     1   1000S   10        1   1  CYCLE 4
         EXPOS                                                                                                    POS TARG -0.5,
                                                                                                                  +0.5
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10       USE     10HR-A                                                                                           ORIENT 343D +/-
         EXPOS                                                                                                    0.01D
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20       USE     10HR-B                                                                                           ORIENT 333D +/-
         EXPOS                                                                                                    0.01D
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30       USE     10HR-C                                                                                           ORIENT 107.0D +/-
         EXPOS                                                                                                    0.01D
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40       USE     13HR-A                                                                                           ORIENT 293.0D +/-
         EXPOS                                                                                                    0.01D
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EXPOSURE LOGSHEET                                                                                  ID = 5490             [  6]
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 1      |   2   |      3    |  4   |   5   |   6   |    7   |   8   |       9       |10 |   11  |   12    |13 |14|        15
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  Line  |  Seq  |   Target  |Instr | Oper. | Aper  |Spectral|Central|   Optional    |Num|  Time |   S/N   |Flx|Pr|     Special
 Number | Name  |    Name   |Config| Mode  |or FOV |Element |Waveln.|  Parameters   |Exp|       |Rel. Time|Ref|  |   Requirements
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50       USE     13HR-B                                                                                           ORIENT 290.0D +/-
         EXPOS                                                                                                    2D
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60       USE     13HR-C                                                                                           ORIENT 112.0D +/-
         EXPOS                                                                                                    2D
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            Summary Form for Proposal 5490                                                                               [  7]

  Item                          Used in this proposal
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  Configurations                WFPC2
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  Opmodes                       IMAGE
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  Optional Parameters           CR-SPLIT=NO
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  Proposal for                  GO
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  S/C Hours                     25.00
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  Scientific Category           GALAXIES & CLUSTERS
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  Scientific Sub-category       EVOLUTION/COSMOSLOGY
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  Special Requirements          CYCLE 4; SEQ 1.0-3.2 NO GAP POS TARG +0.5, +0.5 POS TARG +0.5, -0.5 POS TARG -0.5, -0.5 POS TARG
                                -0.5, +0.5 CYCLE 4 POS TARG +0.5,+0.5 POS TARG -0.5,+0.5 ORIENT 343D +/- 0.01D ORIENT 333D +/-
                                0.01D ORIENT 107.0D +/- 0.01D ORIENT 293.0D +/- 0.01D ORIENT 290.0D +/- 2D ORIENT 112.0D +/- 2D
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  Spectral Elements             F814W F380W
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  Target Names                  10HR-A 10HR-B 10HR-C 13HR-A 13HR-B 13HR-C
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