! File: 5199C.PROP ! Database: PEPDB ! Date: 24-FEB-1994:00:44:03 coverpage: title_1: MASS EXCHANGE BINARIES (FOS 34) SS 2883 : CYCLE 3 sci_cat: STELLAR ASTROPHYSICS proposal_for: GTO/FOS cont_id: 1051 pi_title: PROF. pi_fname: BRUCE pi_lname: MARGON pi_inst: WASHINGTON, UNIVERSITY OF pi_country: USA pi_phone: 206-543-0089 hours_pri: 0.92 num_pri: 1 fos: Y time_crit: Y ! end of coverpage abstract: line_1: FOS UV spectroscopy will be used to study the Be star line_2: (SS 2883; CD-63D2495) binary companion to the pulsar line_3: PSR1259-63. The pulsar is eclipsed near periastron, line_4: due to the wind of the Be star, and or a circumstellar line_5: disk. UV spectra near periastron will be used to probe line_6: the Be star wind and disk material, and perhaps their line_7: interaction with the pulsar. ! ! end of abstract general_form_proposers: lname: MARGON fname: BRUCE inst: UNIVERSITY OF WASHINGTON country: USA ! lname: HARMS fname: RICHARD title: PI mi: J. inst: APPLIED RESEARCH CORPORATION country: USA ! lname: BOHLIN fname: RALPH inst: SPACE TELESCOPE SCIENCE INSTITUTE country: USA ! lname: ANGEL fname: J. ROGER mi: P. inst: UNIVERSITY OF ARIZONA country: USA ! lname: BARTKO fname: FRANK inst: UNIVERSITY OF CALIFORNIA, SAN DIEGO country: USA ! lname: BEAVER fname: EDWARD inst: UNIVERSITY OF CALIFORNIA, SAN DIEGO country: USA ! lname: BURBIDGE fname: E. MARGARET inst: UNIVERSITY OF CALIFORNIA, SAN DIEGO country: USA ! lname: DAVIDSEN fname: ARTHUR mi: F. inst: JOHNS HOPKINS UNIVERSITY country: USA ! lname: FORD fname: HOLLAND mi: C. inst: JOHNS HOPKINS UNIVERSITY country: USA ! lname: HARTIG fname: GEORGE mi: F. inst: SPACE TELESCOPE SCIENCE INSTITUTE country: USA ! ! end of general_form_proposers block general_form_text: question: 2 section: 1 line_1: ! question: 3 section: 1 line_1: FOS UV spectra (RAPID mode) of SS 2883 will be taken at line_2: periastron passage of pulsar companion. At periastron line_3: the cirumstellar disk around the Be star should interact line_4: with the passing pulsar, producing interesting time- line_5: dependent effects in the UV spectra. ! question: 4 section: 1 line_1: HST observations are required for UV spectra. ALthough line_2: SS 2883 is bright in the optical, it is expected to line_3: too faint for IUE because of heavy interstellar reddening. ! question: 5 section: 1 line_1: Observations in this program are highly time critical. The line_2: target is a highly eccentirc binary system, and the FOS spectra line_3: need to be obtained at a specific binary phase very near line_4: periastron. At periastron pulsar should interact with circum- line_5: stellar material around Be star. (Next periastron passage is line_6: about 4 years later). Note that periastron passage is quite line_7: close to repair mission date, and in order to maximize chances line_8: for success, we have been asked to submit both cycle 3 and line_9: cycle 4 versions of proposal, although only one will be line_10: executed (Note also that this star may be in the CVZ.) ! question: 7 section: 1 line_1: Data reduction will be performed at the ST ScI, and the line_2: analysis will be performed using FOS IDT computer facilities. line_3: The FOS IDT, of course, has extensive practical experience line_4: in the use of STSDAS (and other IRAF-related) software line_5: to reduce and analyze all the various types of FOS data. ! question: 9 section: 1 line_1: All FOS IDT (both GTO and AUG) data. ! question: 10 section: 1 line_1: Data analysis, research assistant support, and funding will line_2: be provided under NASA's FOS GTO contract(s). The FOS IDT line_3: support includes a total of roughly 30 Ph.D. astronomers and line_4: graduate students at 5 different institutions. At each line_5: institution several workstations (typically Sparc 10's or line_6: equivalent), plus one or more Microvaxes (or equivalent) are line_7: essentially devoted to processing of HST data. ! !end of general form text general_form_address: lname: MARGON fname: BRUCE category: PI inst: UNIVERSITY OF WASHINGTON addr_1: ASTRONOMY DEPARTMENT, FM-20 city: SEATTLE state: WA zip: 98195 country: USA phone: 206 543-0089 telex: 4740096 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: CD-63D2495 name_2: PSR1259-63 name_3: GSC 8997-1597 descr_1: A,116,160 pos_1: RA=13H 02M 47.79S+/-0.01S, pos_2: DEC = -63D 50' 08.7"+/-0.3", pos_3: PLATE-ID=060X equinox: 2000 fluxnum_1: 1 fluxval_1: V = 9.9 +/- 1.0 fluxnum_2: 1 fluxval_2: E(B-V) = 1.0 +/- 0.3 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 targname: CD-63D2495 config: FOS/BL opmode: ACQ/PEAK aperture: 4.3 sp_element: G270H num_exp: 1 time_per_exp: 10.0S fluxnum_1: 1 priority: 1 param_1: SCAN-STEP-Y=1.4, param_2: SEARCH-SIZE-X=1, param_3: SEARCH-SIZE-Y=3 req_1: ONBOARD ACQ FOR 2; req_2: AT 09-JAN-94 +/- 5D; req_3: GROUP 1-5 WITHIN 12H; comment_1: AT PERIASTRON ! linenum: 2.000 targname: CD-63D2495 config: FOS/BL opmode: ACQ/PEAK aperture: 1.0 sp_element: G270H num_exp: 1 time_per_exp: 15.0S fluxnum_1: 1 priority: 1 param_1: SCAN-STEP-X=0.7, param_2: SCAN-STEP-Y=0.7, param_3: SEARCH-SIZE-X=6, param_4: SEARCH-SIZE-Y=2 req_1: ONBOARD ACQ FOR 3-5; req_2: CYCLE 3 /1-5; ! linenum: 3.000 targname: CD-63D2495 config: FOS/BL opmode: RAPID aperture: 4.3 sp_element: G270H num_exp: 1 time_per_exp: 300S fluxnum_1: 1 priority: 1 param_1: READ-TIME=15 req_1: GROUP 3-5 NO GAP; ! linenum: 4.000 targname: CD-63D2495 config: FOS/BL opmode: RAPID aperture: 4.3 sp_element: G190H num_exp: 1 time_per_exp: 1000S fluxnum_1: 1 priority: 1 param_1: READ-TIME=50 ! linenum: 5.000 targname: CD-63D2495 config: FOS/BL opmode: RAPID aperture: 4.3 sp_element: G130H num_exp: 1 time_per_exp: 2000S fluxnum_1: 1 priority: 1 param_1: READ-TIME=50 ! ! end of exposure logsheet ! No scan data records found