! File: 1152C.PROP ! Database: PEPDB ! Date: 16-FEB-1994:03:46:49 coverpage: title_1: STELLAR WIND VARIATIONS -- CYCLE 1 sci_cat: STELLAR ASTROPHYSICS sci_subcat: HOT STARS proposal_for: GTO/HRS pi_title: PROF. pi_fname: JOHN pi_mi: B. pi_lname: HUTCHINGS pi_inst: DOMINION ASTROPHYSICAL OBSERVATORY pi_country: CANADA pi_phone: (604) 363-0018 keywords_1: OB STARS, STELLAR WINDS, BINARIES, TIME VARIATIONS hours_pri: 2.00 num_pri: 9 time_crit: X pi_position: PROFESSOR ! end of coverpage abstract: line_1: UV spectroscopy will be done at 2 x 10super4 resolution on the principal line_2: stellar wind lines of OB stars with mass-loss. Each star will be observed line_3: twice to study time changes in line profiles. Several stars are interacting line_4: binaries. These will also be observed at key binary phases to study phase line_5: dependent wind variations. WFC parallel observations with UV grating are line_6: requested on one SMC star. ! ! end of abstract general_form_proposers: lname: HUTCHINGS fname: JOHN mi: B. inst: DOMINION ASTROPHYSICAL OBSERVATORY country: CANADA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: Each set of observations to be taken in shortest time interval. Binary stars line_2: should be observed at phase requested, within 1 or 2 orbits. Intervals between line_3: epochs for each star should be >/= 4 weeks. line_5: All observations with G160M grating centered at wavelengths of interest. line_7: During R31 exposures WFC parallel observations requested with UV grating to line_8: study OB star population in SMC. line_10: Observations may be made in any cycle, subject to time constraints in exposure line_11: log. ! question: 4 section: 1 line_1: ST required to obtain resolution and S/N in UV. IUE data are too noisy for line_2: this investigation. Ground-based data not possible. ! question: 5 section: 1 line_1: Timing of observations is important to distinguish temporal and phase-related line_2: spectroscopic changes. ! question: 6 section: 1 line_1: Observations of different lines for each epoch of a star should be taken as line_2: close together in time as possible (same orbit or consecutive orbits), to line_3: provide simultaneous snapshots of the winds in all lines. ! question: 7 section: 1 line_1: UV line profiles will be compared with each other and with theoretical ones to line_2: analyze (1) smoothness of wind; (2) limitations of models; (3) temporal and line_3: phase-related changes; (4) ionization structure of wind fine-structure line_4: features. Weak features will be identified and analyzed in the same way. line_5: Interstellar lines should reveal faint components, of particular interest in line_6: SMC target. line_8: Appropriate analysis facilities and software exist at DAO. line_10: All analysis facilities exist at DAO, for ST standard product tapes. ! question: 10 section: 1 line_1: All analysis facilities exist at DAO for ST standard product tapes. ! question: 13 section: 1 line_1: HRS 2 x E+4 resolution data will be obtained on principal stellar wind lines line_2: (NV, SiIV, CIV, NIV) in several OB supergiants. Data will be obtained at line_3: several epochs to sample time variations and to look for phase dependent line_4: changes in interacting binaries. ! !end of general form text general_form_address: lname: HUTCHINGS fname: JOHN mi: B. title: PROF. category: PI inst: DOMINION ASTROPHYSICAL OBSERVATORY addr_1: 5071 W. SAANICH RD. addr_2: V8X 4M6 city: VICTORIA state: BC country: CANADA phone: (604) 363-0018 telex: 049-7295 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: R31 descr_1: O+WN BINARY pos_1: RA=1H 3M 25.25S +/- 0.1", pos_2: DEC=-72D 06' 43" +/- 0.1", pos_3: PLATE-ID=06B1 equinox: 2000 comment_1: UV FLUXES KNOWN FROM IUE ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 10.000 targname: R31 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-N2 num_exp: 1 time_per_exp: 30S priority: 3 param_1: SEARCH-SIZE=5, param_2: FAINT=200 req_1: ONBOARD ACQ FOR 11;CYCLE 1 / 10-17 ! linenum: 10.500 targname: R31 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-N2 num_exp: 1 time_per_exp: 50S priority: 3 param_1: SEARCH-SIZE=1, param_2: MAP=END-POINT, param_3: LOCATE=NO, param_4: FAINT=0 req_1: ONBOARD ACQ FOR 11 ! linenum: 11.000 targname: ^ config: ^ opmode: ACCUM aperture: 0.25 sp_element: G160M wavelength: 1545 num_exp: ^ time_per_exp: 7M priority: ^ req_1: ZERO-PHASE JD2443477.61+/-.2D; req_2: PERIOD 6.5380D +/- 0.0001D; req_3: PHASE 0 +/- 0.12 ! linenum: 12.000 targname: R31 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-N2 num_exp: 1 time_per_exp: 30S priority: 3 param_1: SEARCH-SIZE=5, param_2: FAINT=200 req_1: ONBOARD ACQ FOR 13 ! linenum: 12.500 targname: R31 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-N2 num_exp: 1 time_per_exp: 50S priority: 3 param_1: SEARCH-SIZE=1, param_2: MAP=END-POINT, param_3: LOCATE=NO, param_4: FAINT=0 req_1: ONBOARD ACQ FOR 13 ! linenum: 13.000 targname: ^ config: ^ opmode: ACCUM aperture: 0.25 sp_element: G160M wavelength: 1545 num_exp: ^ time_per_exp: 7M priority: ^ req_1: PHASE 0 +/- .1 OF REF 11; req_2: AFTER 11 BY 19.6D +/- 13.1D comment_1: 14,11 DIFFER BY 1-5 PERIODS ! linenum: 14.000 targname: R31 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-N2 num_exp: 1 time_per_exp: 30S priority: 3 param_1: SEARCH-SIZE=5, param_2: FAINT=200 req_1: ONBOARD ACQ FOR 17 ! linenum: 14.500 targname: R31 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-N2 num_exp: 1 time_per_exp: 50S priority: 3 param_1: SEARCH-SIZE=1, param_2: MAP=END-POINT, param_3: LOCATE=NO, param_4: FAINT=0 req_1: ONBOARD ACQ FOR 17 ! linenum: 17.000 targname: ^ config: ^ opmode: ACCUM aperture: 0.25 sp_element: G160M wavelength: 1545 num_exp: ^ time_per_exp: 7M priority: ^ req_1: PHASE 0.5 +/- .1 OF REF 11; req_2: GROUP 11,17 WITH 30D comment_1: 17,11 TO BE OBSERVED WITHIN 30 DAYS ! ! end of exposure logsheet ! No scan data records found