!  File:  2355C.PROP
!  Database:  PEPDB
!  Date:  17-FEB-1994:05:25:08

coverpage:

  title_1:         COLLISIONLESS SHOCKS AND YOUNG SUPERNOVA REMNANTS
    sci_cat:       INTERSTELLAR MEDIUM
    sci_subcat:    SN & SNR
    proposal_for:  GO
    pi_title:      DR.
    pi_fname:      WILLIAM
    pi_mi:         P.
    pi_lname:      BLAIR
    pi_inst:       JOHNS HOPKINS UNIVERSITY
    pi_country:    USA
    pi_phone:      301-338-8447
    keywords_1:    SUPERNOVA REMNANTS, IMAGING
    hours_pri:     5.81
    num_pri:       5
    wf_pc:         X
    funds_amount:  65927
    funds_length:  12
    funds_date:    JAN-91
    pi_position:   ASSOC RES. SCIENTIST
    off_fname:     CHERYL-LEE
    off_lname:     HOWARD
    off_title:     ASSISTANT DEAN
    off_inst:      THE JOHNS HOPKINS UNIVERSITY
    off_addr_1:    HOMEWOOD RESEARCH ADMINISTRATION
    off_addr_2:    MERRYMAN HALL
    off_city:      BALTIMORE
    off_state:     MD
    off_zip:       21218
    off_country:   USA
! end of coverpage

abstract:

    line_1:        We propose to obtain WFC H-alpha images of selected supernova remnants to study
    line_2:        the physics and proper motions of so-called "collisionless" shocks. The
    line_3:        primary targets include portions of the young galactic remnants SN 1006, SN
    line_4:        1572 (Tycho's remnant), and the northeast Balmer-dominated filaments in the
    line_5:        Cygnus Loop. We will use the superior imaging quality of HST to resolve the
    line_6:        shock structure and provide direct information about the physical scale lengths
    line_7:        of the shock fronts. The images will also be crucial for determining accurate
    line_8:        proper motions of the filaments (first by comparison with our existing
    line_9:        ground-based images, and ultimately with future HST images). These data will
    line_10:       help refine the distances and expansion laws of these remnants, information
    line_11:       that is critical both for studies of remnant evolution and for the possible use
    line_12:       of the historical observations to calibrate Type Ia supernovae as extragalactic
    line_13:       distance indicators. Two LMC supernova remnants showing the same
    line_14:       Balmer-dominated emission morphology will also be observed as first epoch
    line_15:       proper motion images in order to constrain the ages of these remnants and
    line_16:       provide an independent distance measurement to the LMC.

!
! end of abstract

general_form_proposers:

  lname:           BLAIR
    fname:         WILLIAM
    title:         P.I.
    mi:            P.
    inst:          JOHNS HOPKINS UNIVERSITY
    country:       USA

!

  lname:           LONG
    fname:         KNOX
    mi:            S.
    inst:          JOHNS HOPKINS UNIVERSITY
    country:       USA

!

  lname:           WINKLER
    fname:         P.
    mi:            F.
    inst:          MIDDLEBURY COLLEGE
    country:       USA

!

  lname:           HESTER
    fname:         JOHN
    mi:            J.
    inst:          CALTECH
    country:       USA

!

  lname:           KIRSHNER
    fname:         ROBERT
    mi:            P.
    inst:          CFA
    country:       USA

!

  lname:           RAYMOND
    fname:         JOHN
    mi:            C.
    inst:          CFA
    country:       USA

!
! end of general_form_proposers block

! No records found

general_form_address:

  lname:           BLAIR
    fname:         WILLIAM
    mi:            P.
    title:         DR.
    category:      PI
    inst:          THE JOHNS HOPKINS UNIVERSITY
    addr_1:        DEPT. OF PHYSICS AND ASTRONOMY
    addr_2:        170-B ROWLAND HALL
    city:          BALTIMORE
    state:         MD
    zip:           21218
    country:       USA

!
! end of general_form_address records

fixed_targets:

    targnum:       1
    name_1:        TYCHO-KNOTG
    descr_1:       INTERSTELLAR MEDIUM; SUPERNOVA REMNANT
    pos_1:         RA = 00H 23M 05S +/- 0.3S,
    pos_2:         DEC = +63D 52' 40" +/- 2"
    equinox:       1950.0
    fluxnum_1:     1
    fluxval_1:     SURF-LINE(6563) = 4.7 +/- 0.3 E-16

!

    targnum:       2
    name_1:        SN1006P1
    descr_1:       INTERSTELLAR MEDIUM; SUPERNOVA REMNANT
    pos_1:         RA = 14H 59M 01S +/- 0.2S,
    pos_2:         DEC = -41D 33' 26" +/- 2"
    equinox:       ^
    fluxnum_1:     1
    fluxval_1:     SURF-LINE(6563) = 2.5 +/- 0.5 E-16

!

    targnum:       3
    name_1:        CYGLOOPNE1
    descr_1:       INTERSTELLAR MEDIUM; SUPERNOVA REMNANT
    pos_1:         RA = 20H 53M 59S +/- 0.1S,
    pos_2:         DEC = +31D 45' 06" +/- 1"
    equinox:       ^
    fluxnum_1:     1
    fluxval_1:     SURF-LINE(6563) = 1.6 +/- 0.1 E-15

!

    targnum:       4
    name_1:        CYGLOOPNE2
    descr_1:       INTERSTELLAR MEDIUM; SUPERNOVA REMNANT
    pos_1:         RA = 20H 53M 44S +/- 0.1S,
    pos_2:         DEC = +31D 47' 09" +/- 1"
    equinox:       ^
    fluxnum_1:     1
    fluxval_1:     SURF-LINE(6563) = 1.6 +/- 0.1 E-15

!

    targnum:       5
    name_1:        0509-67.5
    descr_1:       EXT-MEDIUM; SUPERNOVA REMNANT
    pos_1:         RA = 05H 09M 36S +/- 1S,
    pos_2:         DEC = -67D 34' 56" +/- 5"
    equinox:       ^
    fluxnum_1:     1
    fluxval_1:     SURF-LINE(6563) = 4.7 +/- 0.3 E-16

!
! end of fixed targets

! No solar system records found

! No generic target records found

exposure_logsheet:

    linenum:       1.000
    targname:      TYCHO-KNOTG
    config:        WFC
    opmode:        IMAGE
    aperture:      ALL
    sp_element:    F656N
    num_exp:       1
    time_per_exp:  2500S
    s_to_n:        8
    fluxnum_1:     1
    priority:      2
    param_1:       PRE-FLASH = YES,
    param_2:       CR-SPLIT = NO,
    param_3:       CLOCKS = YES,
    param_4:       PURGE = YES
    comment_1:     S/N IS PER SQUARE ARCSEC OF
    comment_2:     DETECTED EMISSION.

!

    linenum:       2.000
    targname:      TYCHO-KNOTG
    config:        WFC
    opmode:        IMAGE
    aperture:      ALL
    sp_element:    F658N
    num_exp:       1
    time_per_exp:  2500S
    s_to_n:        8
    fluxnum_1:     1
    priority:      2
    param_1:       PRE-FLASH = YES,
    param_2:       CR-SPLIT = NO,
    param_3:       CLOCKS = YES,
    param_4:       PURGE = YES
    req_1:         SAME ORIENT FOR 2 AS 1
    comment_1:     S/N IS PER SQUARE ARCSEC OF
    comment_2:     DETECTED EMISSION.

!

    linenum:       3.000
    targname:      SN1006P1
    config:        WFC
    opmode:        IMAGE
    aperture:      ALL
    sp_element:    F656N
    num_exp:       2
    time_per_exp:  2600S
    s_to_n:        3.5
    fluxnum_1:     1
    priority:      1
    param_1:       PRE-FLASH = YES,
    param_2:       CR-SPLIT = NO,
    param_3:       CLOCKS = YES,
    param_4:       PURGE = YES
    comment_1:     S/N IS PER SQUARE ARCSEC OF
    comment_2:     DETECTED EMISSION IN EACH EXPOSURE.

!

    linenum:       4.000
    targname:      SN1006P1
    config:        WFC
    opmode:        IMAGE
    aperture:      ALL
    sp_element:    F658N
    num_exp:       2
    time_per_exp:  2600S
    s_to_n:        3.5
    fluxnum_1:     1
    priority:      1
    param_1:       PRE-FLASH = YES,
    param_2:       CR-SPLIT = NO,
    param_3:       CLOCKS = YES,
    param_4:       PURGE = YES
    req_1:         SAME ORIENT FOR 4 AS 3
    comment_1:     S/N IS PER SQUARE ARCSEC OF
    comment_2:     DETECTED EMISSION IN EACH EXPOSURE.

!

    linenum:       5.000
    targname:      CYGLOOPNE1
    config:        WFC
    opmode:        IMAGE
    aperture:      ALL
    sp_element:    F656N
    num_exp:       1
    time_per_exp:  1500S
    s_to_n:        20
    fluxnum_1:     1
    priority:      1
    param_1:       PRE-FLASH = YES,
    param_2:       CR-SPLIT = NO,
    param_3:       CLOCKS = YES,
    param_4:       PURGE = YES
    comment_1:     S/N IS PER SQUARE ARCSEC OF
    comment_2:     DETECTED EMISSION.

!

    linenum:       6.000
    targname:      CYGLOOPNE2
    config:        WFC
    opmode:        IMAGE
    aperture:      ALL
    sp_element:    F656N
    num_exp:       1
    time_per_exp:  1500S
    s_to_n:        20
    fluxnum_1:     1
    priority:      3
    param_1:       PRE-FLASH = YES,
    param_2:       CR-SPLIT = NO,
    param_3:       CLOCKS = YES,
    param_4:       PURGE = YES
    comment_1:     S/N IS PER SQUARE ARCSEC OF
    comment_2:     DETECTED EMISSION.

!

    linenum:       7.000
    targname:      0509-67.5
    config:        WFC
    opmode:        IMAGE
    aperture:      ALL
    sp_element:    F656N
    num_exp:       1
    time_per_exp:  2500S
    s_to_n:        10
    fluxnum_1:     1
    priority:      2
    param_1:       PRE-FLASH = YES,
    param_2:       CR-SPLIT = NO,
    param_3:       CLOCKS = YES,
    param_4:       PURGE = YES
    comment_1:     S/N IS PER SQUARE ARCSEC OF
    comment_2:     DETECTED EMISSION.

!
! end of exposure logsheet

! No scan data records found