!  File:  1243C.PROP
!  Database:  PEPDB
!  Date:  16-FEB-1994:07:30:24

coverpage:

  title_1:         COOLING FLOWS IN DISTANT DOMINANT CLUSTER GALAXIES
    sci_cat:       GALAXIES & CLUSTERS
    sci_subcat:    GAS
    proposal_for:  GTO/FOC
    pi_fname:      F. DUCCIO
    pi_lname:      MACCHETTO
    pi_inst:       ESA, SPACE TELESCOPE SCIENCE INSTITUTE
    pi_country:    USA
    pi_phone:      301-338-4790
    keywords_1:    DOMINANT CLUSTER GALAXIES, COOLING FLOWS
    hours_pri:     4.00
    num_pri:       1
    foc:           X
    pi_position:   CHIEF, ISB
    off_fname:     F.
    off_lname:     MACCHETTO
! end of coverpage

abstract:

    line_1:        The systems of gaseous condensations detected in the optical range within and
    line_2:        around the centrally dominant galaxy of X-ray clusters are thought to result
    line_3:        from a radiative accretion flow. It is proposed to take advantage of the high
    line_4:        spatial resolution and ST to study systems of this type in the strong Lyman
    line_5:        Alpha emission line for which the contrast in brightness with the galaxy
    line_6:        continuum is much greater than for optical lines. In particular it is proposed
    line_7:        to explore in very distant clusters like A1795. Three clusters have been
    line_8:        chosen, A1413 (z=0.14), 3C295 (z=0.46) and SC2059-247 (z=0.19). They have
    line_9:        optical and X-ray morphologies similar to A1795, but are a factor 3-4 more
    line_10:       powerful in the X-rays. The program aims to prepare the grounds for a
    line_11:       systematic study of the cooling flow phenomenon out to the very early epochs of
    line_12:       the cluster evolution.

!
! end of abstract

general_form_proposers:

  lname:           PEROLA
    fname:         G.
    mi:            C.
    inst:          ROME, UNIVERSITY OF
    country:       ITALY
    esa:           Y

!

  lname:           MACCHETTO
    fname:         F. DUCCIO
    inst:          ESA, SPACE TELESCOPE SCIENCE INSTITUTE
    country:       USA
    esa:           Y

!
! end of general_form_proposers block

general_form_text:

  question:        3
    section:       1
    line_1:        All exposures to be executed in cycle 1

!

  question:        13
    section:       1
    line_1:
    line_2:        The program will investigate for three very distant clusters the existence of
    line_3:        gaseous condensations similar to those found in A1795. The cluster chosen have
    line_4:        optical and x-ray morphologies similar to A1795 but are 3-4 times more powerful
    line_5:        in the x-rays observations will be carried out in Ly-ALPHA.

!
!end of general form text

general_form_address:

  lname:           MACCHETTO
    fname:         F. DUCCIO
    category:      PI
    inst:          SPACE TELESCOPE SCIENCE INSTITUTE
    addr_1:        HOMEWOOD CAMPUS
    addr_2:        3700 SAN MARTIN DRIVE
    city:          BALTIMORE
    state:         MD
    zip:           21218
    country:       USA
    phone:         301-338-4790

!
! end of general_form_address records

fixed_targets:

    targnum:       1
    name_1:        3C295
    descr_1:       DOMINANT GALAXY IN CLUSTER
    pos_1:         RA = 14H 09M 33.53S +/- 0.1S,
    pos_2:         DEC = +52D 26' 13.2" +/- 1"
    equinox:       1950
    rv_or_z:       Z=0.461
    fluxnum_1:     1
    fluxval_1:     V=20.5

!
! end of fixed targets

! No solar system records found

! No generic target records found

exposure_logsheet:

    linenum:       1.000
    targname:      3C295
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X512
    sp_element:    F550M
    wavelength:    5459
    num_exp:       1
    time_per_exp:  12600S
    s_to_n:        5
    fluxnum_1:     1
    priority:      1
    req_1:         CYCLE 2 / 1-2

!

    linenum:       2.000
    targname:      3C295
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X512
    sp_element:    F502M
    wavelength:    4939
    num_exp:       1
    time_per_exp:  1800S
    s_to_n:        5
    fluxnum_1:     1
    priority:      1

!
! end of exposure logsheet

! No scan data records found