!  File:  1222C.PROP
!  Database:  PEPDB
!  Date:  16-FEB-1994:06:40:43

coverpage:

  title_1:         A FIRST STUDY OF ACTIVE NUCLEI WITH ST - THE STELLAR AND GASEOUS
    title_2:       ENVIRONMENT OF THE NGC 4151 NUCLEUS
    sci_cat:       QSO, AGN, SEYFERTS
    proposal_for:  GTO/FOC
    pi_fname:      ALEC
    pi_lname:      BOKSENBERG
    pi_inst:       ROYAL GREENWICH OBSERVATORY
    pi_country:    UNITED KINGDOM
    pi_phone:      (0223) 374000
    keywords_1:    SEYFERT GALAXY, KINEMATICS, SPECTROSCOPY, IMAGING,
    keywords_2:    JET, PROFILES
    hours_pri:     4.00
    num_pri:       3
    time_crit:     X
    pi_position:   PROFESSOR
! end of coverpage

abstract:

    line_1:        NGC 4151 is the Seyfert galaxy with the brightest nucleus in apparent magnitude
    line_2:        and one of the nearest and most active Seyfert galaxies.
    line_4:        We propose to obtain the distribution and velocity field of the gas near the
    line_5:        center in an attempt to answer the following questions:
    line_7:        Is the gas distributed in a disk, a cone, along the radio jet? Is the
    line_8:        photoionizing isotropic? What are the gas motions, the origin of the gas and
    line_9:        the rate of the mass loss?
    line_11:       We propose:
    line_12:       - to map the ionized gas in the [OIII] lambda 5007 line to tie in the FOC
    line_13:       observations with those made from the ground, and in the CIV lambda 1500
    line_14:       line for even higher angular resolution and because it is a permitted line
    line_15:       and emitted by highly ionized gas;
    line_16:       - to take long slit spectra in the first and third orders which will give the
    line_17:       line width, the velocity field and line intensity ratios as a function of
    line_18:       distance from center. The spectra will be taken along and perpendicular to
    line_19:       the radio jet. (P.A.= 80 degrees +/- 10 degrees; P.A.= 170 degrees +/-
    line_20:       10 degrees.

!
! end of abstract

general_form_proposers:

  lname:           PIRO
    fname:         L.
    inst:          ROME, UNIVERSITY OF
    country:       ITALY
    esa:           X

!

  lname:           CLAVEL
    fname:         J.
    inst:          MEUDON OBSERVATORY
    country:       FRANCE
    esa:           X

!

  lname:           ALTAMORE
    fname:         A.
    inst:          ROME, UNIVERSITY OF
    country:       ITALY
    esa:           X

!

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

!

  lname:           ELVIUS
    fname:         A.
    inst:          STOCKHOLM OBSERVATORY
    country:       SWEDEN
    esa:           X

!

  lname:           PETTINI
    fname:         M.
    inst:          ROYAL GREENWICH OBSERVATORY
    country:       UNITED KINGDOM
    esa:           X

!

  lname:           TARENGHI
    fname:         M.
    inst:          EUROPEAN SOUTHERN OBSERVATORY
    country:       GERMANY, WEST
    esa:           X

!

  lname:           BROMAGE
    fname:         G.
    mi:            E.
    inst:          RUTHERFORD APPLETON LABORATORY
    country:       UNITED KINGDOM
    esa:           X

!

  lname:           BOKSENBERG
    fname:         ALEC
    inst:          ROYAL GREENWICH OBSERVATORY
    country:       UNITED KINGDOM
    esa:           X

!

  lname:           SNIJDERS
    fname:         M. A.
    mi:            J.
    esa:           X

!

  lname:           DEMOULIN-ULRICH
    fname:         MARIE-HELENE
    inst:          EUROPEAN SOUTHERN OBSERVATORY
    country:       GERMANY, WEST
    esa:           X

!
! end of general_form_proposers block

general_form_text:

  question:        3
    section:       1
    line_1:        a) Mapping of the gas in the immediate vicinity of the nucleus in the CIV
    line_2:        LAMBDA 1550 and [0III] LAMBDA 5007 lines.
    line_3:        b) Velocity field, line width and line ratios from long slit spectra along the
    line_4:        radio jet (P.A.=80D+/-10D) and perpendicular to the radio jet
    line_5:        (P.A.=170D+/-10D) at two offsets from the nucleus
    line_6:        c) Last but not least, the above spectra will give very high S/N spectra of
    line_7:        the nucleus with 1 to 2 A resolution for study of emission line profiles,
    line_8:        absorption lines and continuum.

!

  question:        4
    section:       1
    line_1:        The ionized gas distribution and velocity field have already been obtained from
    line_2:        observations in the [0III] LAMBDA 5007 line with 1 arc sec resolution,
    line_3:        practically the best which can be achieved from the ground. It is very
    line_4:        important to obtain observations closer to the nucleus because the closer the
    line_5:        gas is to the nucleus the more it reflects of the conditions of acceleration
    line_6:        and possibly ejection.

!

  question:        6
    section:       1
    line_1:        Dark time: the first two exposures require a solar zenith angle larger than
    line_2:        90D for suppression of residual airglow 0ILAMBDA1304 emission.

!

  question:        7
    section:       1
    line_1:        The Institutions to which we are affiliated are well outfitted in hardware
    line_2:        (VAX computers) and software for data reduction and analysis.
    line_4:        The data will be reduced and analysed simultaneously in several
    line_5:        institutions. The results will then be compared. The astrophysical
    line_6:        interpretation will be done as a group.

!

  question:        10
    section:       1
    line_1:        Our institutions will fully support us and have the software and hardware
    line_2:        appropriate for the reduction and analysis of ST data.

!

  question:        13
    section:       1
    line_1:        The[0III]5000A and CIV 1550A doublets in NGC4151 will be observed using the
    line_2:        long slit spectrograph and the f/96 imaging facilities of the FOC to study the
    line_3:        line profiles with high spatial resolution.

!
!end of general form text

general_form_address:

  lname:           BOKSENBERG
    fname:         ALEC
    title:         PROF.
    category:      PI
    inst:          ROYAL GREENWICH OBSERVATORY
    addr_1:        MADINGLEY ROAD
    addr_2:        CB3 0EZ
    city:          CAMBRIDGE
    country:       UNITED KINGDOM
    phone:         (44) 223 374000
    telex:         817235

!

  lname:           DEMOULIN-ULRICH
    fname:         MARIE-HELENE
    category:      CON
    inst:          EUROPEAN SOUTHERN OBSERVATORY
    addr_1:        KARL-SCHWARZSCHILD-STRASSE 2
    addr_2:        D-8046
    city:          GARCHING BEI MUNCHEN
    country:       GERMANY, WEST
    phone:         (89) 32006-232
    telex:         52828222

!
! end of general_form_address records

fixed_targets:

    targnum:       1
    name_1:        NGC4151-NUC
    descr_1:       SEYFERT 1.5 GALAXY
    pos_1:         RA = 12H 08M 01.07S +/- 1S,
    pos_2:         DEC = +39D 41' 01.98" +/- 1"
    equinox:       1950
    pm_or_par:     N
    rv_or_z:       V=960
    acqpr_1:       EXT
    plate_req:     N
    plate_avail:   N
    comment_1:     2 REFERS TO THE NARROW EXTENDED
    comment_2:     COMPONENT; 3 REFERS TO THE
    comment_3:     VARIABLE POINT SOURCE AT PEAK
    comment_4:     STRENGTH; TRUE POSITION OF NUCLEUS
    comment_5:     TBD FROM IMAGE
    comment_6:     GASP POSITION USED
    fluxnum_1:     1
    fluxval_1:     V=11.9
    fluxnum_2:     2
    fluxval_2:     F-LINE(1550)=4 +/- 1E-13,
    fluxval_3:     W-LINE(1550)=18 +/- 2
    fluxnum_4:     3
    fluxval_4:     F-LINE(1550)=1.1 +/- 0.3E-12,
    fluxval_5:     W-LINE(1550)=40 +/- 4
    fluxnum_6:     4
    fluxval_6:     F-LINE(5007)=10 +/- 3E-13,
    fluxval_7:     W-LINE(5007)=12 +/- 3

!

    targnum:       2
    name_1:        NGC4151-P3
    descr_1:       0.3" OFFSET TO W ALONG RADIO JET
    pos_1:         R=0.3" +/- 0.1",
    pos_2:         PA=260D +/- 10D,
    pos_3:         FROM 1
    equinox:       1950
    pm_or_par:     N
    acqpr_1:       EXT
    plate_req:     N
    plate_avail:   N
    fluxnum_1:     1
    fluxval_1:     F-LINE(1550)=1.1 +/- 0.3E-12,
    fluxval_2:     W-LINE(1550)=18 +/- 2
    fluxnum_3:     2
    fluxval_3:     SURF-LINE(5007)=2.4 +/- 1E-13,
    fluxval_4:     W-LINE(5007)=2.4 +/- 0.5

!

    targnum:       3
    name_1:        NGC4151-P5
    descr_1:       O.5" OFFSET TO W ALONG RADIO JET
    pos_1:         R=0.5" +/- 0.1",
    pos_2:         PA=260D +/- 10D,
    pos_3:         FROM 1
    equinox:       1950
    pm_or_par:     N
    acqpr_1:       EXT
    plate_req:     N
    plate_avail:   N
    comment_1:     REFERENCES FOR FLUX DATA:
    comment_2:     [OIII], ANTONUCCI & COHEN,
    comment_3:     AP.J., 271, 564, 1983. CIV,
    comment_4:     ULRICH ET AL., M.N.R.A.S., 206,
    comment_5:     221, 1984. [OIII] EXTENDED,
    comment_6:     PELAT & ALLOIN, ASTRON & ASTROPHYS
    comment_7:     105, 335, 1982.
    fluxnum_1:     1
    fluxval_1:     SURF-LINE(5007)=2.4 +/- 1E-13,
    fluxval_2:     W-LINE(5007)=2.4 +/- 0.5

!
! end of fixed targets

! No solar system records found

! No generic target records found

exposure_logsheet:

    linenum:       1.000
    targname:      NGC4151-NUC
    config:        FOC/96
    opmode:        IMAGE
    aperture:      256X256
    sp_element:    F152M
    wavelength:    1500
    num_exp:       1
    time_per_exp:  1000S
    fluxnum_1:     2
    fluxnum_2:     3
    priority:      1
    req_1:         DARK TIME / 1-2;
    req_2:         CYCLE 2 / 1-15;
    req_3:         COND IF TAC OK / 1-15;
    req_4:         GUID TOL 0.020" / 1-15;

!

    linenum:       2.000
    targname:      NGC4151-NUC
    config:        FOC/96
    opmode:        IMAGE
    aperture:      256X256
    sp_element:    F152M
    wavelength:    1500
    num_exp:       1
    time_per_exp:  500S
    fluxnum_1:     2
    fluxnum_2:     3
    priority:      2

!

    linenum:       3.000
    targname:      NGC4151-NUC
    config:        FOC/96
    opmode:        IMAGE
    aperture:      256X256
    sp_element:    F152M
    wavelength:    1500
    num_exp:       1
    time_per_exp:  800S
    fluxnum_1:     2
    fluxnum_2:     3
    priority:      3

!

    linenum:       4.000
    targname:      NGC4151-NUC
    config:        FOC/96
    opmode:        IMAGE
    aperture:      256X256
    sp_element:    F501N, F2ND
    wavelength:    5010
    num_exp:       1
    time_per_exp:  700S
    fluxnum_1:     4
    priority:      2

!

    linenum:       5.000
    targname:      NGC4151-NUC
    config:        FOC/96
    opmode:        IMAGE
    aperture:      256X256
    sp_element:    F501N
    wavelength:    5010
    num_exp:       1
    time_per_exp:  700S
    fluxnum_1:     4
    priority:      2

!

    linenum:       6.000
    targname:      NGC4151-NUC
    config:        FOC/96
    opmode:        IMAGE
    aperture:      256X256
    sp_element:    F501N, F2ND
    wavelength:    5010
    num_exp:       1
    time_per_exp:  500S
    fluxnum_1:     4
    priority:      3

!

    linenum:       7.000
    targname:      NGC4151-NUC
    config:        FOC/96
    opmode:        IMAGE
    aperture:      256X256
    sp_element:    F501N
    wavelength:    5010
    num_exp:       1
    time_per_exp:  500S
    fluxnum_1:     4
    priority:      3

!

    linenum:       8.000
    targname:      NGC4151-NUC
    config:        FOC/48
    opmode:        SPEC
    aperture:      256X1024-SLIT
    sp_element:    G450M
    wavelength:    3600-5300
    num_exp:       1
    time_per_exp:  1400S
    fluxnum_1:     4
    priority:      1
    param_1:       PIXEL=25X25
    req_1:         ORIENT 285D +/- 5D;
    comment_1:     P.A. OF SLIT 45D+/-5D; ORIENT 105D
    comment_2:     +/- 5D IS EQUALLY GOOD.

!

    linenum:       9.000
    targname:      NGC4151-NUC
    config:        FOC/48
    opmode:        SPEC
    aperture:      256X1024-SLIT
    sp_element:    G450M
    wavelength:    3600-5300
    num_exp:       1
    time_per_exp:  1000S
    fluxnum_1:     4
    priority:      1
    param_1:       PIXEL=25X25
    req_1:         ORIENT 320D +/- 10D;
    req_2:         SAME ORIENT FOR 11 AS 9;
    comment_1:     P.A. OF SLIT 80D+/-10D; ORIENT 140D
    comment_2:     +/- 10D IS EQUALLY GOOD.

!

    linenum:       10.000
    targname:      NGC4151-NUC
    config:        FOC/48
    opmode:        SPEC
    aperture:      256X1024-SLIT
    sp_element:    G450M
    wavelength:    3600-5300
    num_exp:       1
    time_per_exp:  800S
    fluxnum_1:     4
    priority:      1
    param_1:       PIXEL=25X25

!

    linenum:       11.000
    targname:      NGC4151-NUC
    config:        FOC/48
    opmode:        SPEC
    aperture:      256X1024-SLIT
    sp_element:    G150M
    wavelength:    1200-1767
    num_exp:       1
    time_per_exp:  1300S
    fluxnum_1:     2
    fluxnum_2:     3
    priority:      1
    param_1:       PIXEL=25X25

!

    linenum:       12.000
    targname:      NGC4151-P3
    config:        FOC/48
    opmode:        SPEC
    aperture:      256X1024-SLIT
    sp_element:    G450M
    wavelength:    3600-5300
    num_exp:       1
    time_per_exp:  500S
    fluxnum_1:     2
    priority:      1
    param_1:       PIXEL=25X25
    req_1:         ORIENT 50D +/- 10D;
    comment_1:     P.A. OF SLIT 170D+/-10D OFFSET 0.3"
    comment_2:     FROM NUCLEUS; ORIENT 230D +/- 10D IS
    comment_3:     EQUALLY GOOD.

!

    linenum:       13.000
    targname:      NGC4151-P5
    config:        FOC/48
    opmode:        SPEC
    aperture:      256X1024-SLIT
    sp_element:    G450M
    wavelength:    3600-5300
    num_exp:       1
    time_per_exp:  500S
    fluxnum_1:     1
    priority:      2
    param_1:       PIXEL=25X25
    comment_1:     P.A. OF SLIT 170D+/-10D OFFSET 0.5"
    comment_2:     FROM NUCLEUS;

!

    linenum:       14.000
    targname:      NGC4151-P3
    config:        FOC/48
    opmode:        SPEC
    aperture:      256X1024-SLIT
    sp_element:    G150M
    wavelength:    1200-1767
    num_exp:       1
    time_per_exp:  500S
    fluxnum_1:     1
    priority:      2
    param_1:       PIXEL=25X25
    comment_1:     FILTER F130LP
    comment_2:     MIGHT HAVE TO BE USED TO SUPPRESS
    comment_3:     GEOCORONAL LY ALPHA EMISSION FOR EXP
    comment_4:     11,14. DATA DOESN'T MAKE IT CLEAR IF
    comment_5:     F150W WILL. P.A. OF SLIT 170D+/-10D
    comment_6:     OFFSET 0.3" FROM NUCLEUS;

!

    linenum:       15.000
    targname:      NGC4151-NUC
    config:        FOC/48
    opmode:        ACQ
    aperture:      128X128-ASLIT
    sp_element:    F140W
    wavelength:    1500
    num_exp:       1
    time_per_exp:  120S
    fluxnum_1:     2
    fluxnum_2:     3
    priority:      1
    req_1:         ONBOARD ACQ FOR 8,9,11,12;

!
! end of exposure logsheet

! No scan data records found