!  File:  3897C.PROP
!  Database:  PEPDB
!  Date:  19-FEB-1994:23:13:27

coverpage:

  title_1:         SPECTROPHOTOMETRY OF COOL WHITE DWARFS -- REPEAT FOR HOPR#0003
    sci_cat:       STELLAR ASTROPHYSICS
    proposal_for:  RPT/FOS
    cont_id:       1050
    pi_title:      PROF.
    pi_fname:      J. ROGER
    pi_mi:         P
    pi_lname:      ANGEL
    pi_inst:       UNIVERSITY OF ARIZONA
    pi_country:    USA
    pi_phone:      602-621-6541
    keywords_1:    COOL WHITE DWARFS
    hours_pri:     3.80
    num_pri:       3
    fos:           Y
    pi_position:   PROF. OF ASTRONOMY
! end of coverpage

abstract:

    line_1:        Ultraviolet spectrophotometry will be used to determine whether the ultraviolet
    line_2:        blanketing of the coolest DA, DC and DK degenerate stars differ due to the
    line_3:        presence of molecular hydrogen and/or heavy metallic elements and/or carbon and
    line_4:        whether the coolest DC-DK stars have hydrogen-rich atmospheres. The second
    line_5:        question may hold implications for the apparent "cut-off" in the white dwarf
    line_6:        luminosity function at Log L/L(sun) = -4, the disk star formation history and
    line_7:        age.

!
! end of abstract

general_form_proposers:

  lname:           BEAVER
    fname:         EDWARD
    title:         DR.
    inst:          UC, SAN DIEGO
    country:       USA

!

  lname:           BURBIDGE
    fname:         E. MARGARET
    title:         DR.
    inst:          UC, SAN DIEGO
    country:       USA

!

  lname:           MARGON
    fname:         BRUCE
    title:         DR.
    inst:          UNIVERSITY OF WASHINGTON
    country:       USA

!

  lname:           ANGEL
    fname:         J. ROGER
    title:         DR.
    mi:            P
    inst:          UNIVERSITY OF ARIZONA
    country:       USA

!

  lname:           FORD
    fname:         HOLLAND
    title:         DR.
    mi:            C
    inst:          JOHNS HOPKINS UNIVERSITY
    country:       USA

!

  lname:           BARTKO
    fname:         FRANK
    title:         DR.
    inst:          MARTIN MARIETTA CORPORATION
    country:       USA

!

  lname:           DAVIDSEN
    fname:         ARTHUR
    title:         DR.
    mi:            F
    inst:          JOHNS HOPKINS UNIVERSITY
    country:       USA

!

  lname:           HARMS
    fname:         RICHARD
    title:         DR.
    mi:            J
    inst:          APPLIED RESEARCH CORPORATION
    country:       USA

!

  lname:           BOHLIN
    fname:         RALPH
    title:         DR.
    inst:          SPACE TELESCOPE SCIENCE INSTITUTE
    country:       USA

!
! end of general_form_proposers block

general_form_text:

  question:        3
    section:       1
    line_1:        Three stars will be observed spectrophotometrically with the FOS.
    line_4:        Targets stars should all be bright enough to be in the Guide Star Catalog.
    line_5:        Catalog position will need to be adjusted to epoch of observation because of
    line_6:        significant proper motion. The proper motions on the forms were taken from LHS
    line_7:        Catalogue-Second Edition by William J. Layten, Univ. of Minn., 1979.

!

  question:        4
    section:       1
    line_1:        Ultraviolet spectrophotometry is required below 3000A. IUE is not sensitive
    line_2:        enough.

!

  question:        5
    section:       1
    line_1:        The SV prerequisite programs for all FOS observations in this program are:
    line_2:        Prop ID 2195 FOS Target Acquisition Tests All observations
    line_3:        Prop ID 1317 Int./Ext. Wavelength Offsets 1st target
    line_4:        Prop ID 1318 Spectral Flat Fields 1st target
    line_5:        Prop ID 1320 Absolute Spectrophotometry 1st visit of bright targets

!

  question:        13
    section:       1
    line_1:        Ultraviolet spectrophotometry will be used to determine whether the ultraviolet
    line_2:        blanketing of the coolest DA, DC and DK degenerate stars differ due to the
    line_3:        presence of molecular hydrogen and/or heavy metallic elements and/or carbon and
    line_4:        whether the coolest DC-DK stars have hydrogen-rich atmospheres. Three objects
    line_5:        are to be studied, LP 658-2, LHS 1126 and BPM 4729.

!
!end of general form text

general_form_address:

  lname:           ALLEN
    fname:         RICHARD
    title:         DR.
    inst:          STEWARD OBSERVATORY
    addr_1:        UNIVERSITY OF ARIZONA
    city:          TUCSON
    state:         AZ
    zip:           85721
    country:       USA
    phone:         602-621-7661
    telex:         467175

!

  lname:           ANGEL
    fname:         J. ROGER
    mi:            P
    title:         DR.
    category:      PI
    inst:          STEWARD OBSERVATORY
    addr_1:        UNIVERSITY OF ARIZONA
    city:          TUCSON
    state:         AZ
    zip:           85721
    country:       USA
    phone:         602-621-6541
    telex:         467175

!
! end of general_form_address records

fixed_targets:

    targnum:       1
    name_1:        BPM4729
    descr_1:       WHITE DWARF
    pos_1:         RA=7H 53M 06.08S +/- 1",
    pos_2:         DEC=-67D 47'18.9" +/- 1",
    pos_3:         PLATE-ID=01YR
    equinox:       2000
    pm_or_par:     N
    fluxnum_1:     1
    fluxval_1:     V=14.09 +/- 0.20

!
! end of fixed targets

! No solar system records found

! No generic target records found

exposure_logsheet:

    linenum:       1.000
    targname:      BPM4729
    config:        FOS/BL
    opmode:        ACQ/BINARY
    aperture:      4.3
    sp_element:    MIRROR
    num_exp:       1
    time_per_exp:  11S
    priority:      3
    param_1:       BRIGHT = 720000
    req_1:         CYCLE 1 / 1-4;
    req_2:         SEQ 1-4 NO GAP;
    req_3:         ONBOARD ACQ FOR 2-4

!

    linenum:       2.000
    targname:      ^
    config:        ^
    opmode:        ACCUM
    aperture:      ^
    sp_element:    G400H
    wavelength:    3250-4831
    num_exp:       ^
    time_per_exp:  300S
    priority:      ^

!

    linenum:       3.000
    targname:      ^
    config:        ^
    opmode:        ^
    aperture:      ^
    sp_element:    G270H
    wavelength:    2230-3309
    num_exp:       ^
    time_per_exp:  1200S
    priority:      ^

!

    linenum:       4.000
    targname:      ^
    config:        ^
    opmode:        ^
    aperture:      ^
    sp_element:    G190H
    wavelength:    1600-2300
    num_exp:       ^
    time_per_exp:  1500S
    priority:      ^
    param_1:       STEP-TIME=0.05
    comment_1:     REJLIM=10

!
! end of exposure logsheet

! No scan data records found