! File: 4136C.PROP ! Database: PEPDB ! Date: 20-FEB-1994:10:08:42 coverpage: title_1: MASS EXCHANGE BINARIES (FOS 34) AUGMENTATION: title_2: FUTURE CYCLE OBSERVATIONS sci_cat: STELLAR ASTROPHYSICS proposal_for: AUG/FOS cont_id: 3651 pi_title: PROF. pi_fname: BRUCE pi_lname: MARGON pi_inst: WASHINGTON, UNIVERSITY OF pi_country: USA pi_phone: 206-543-0089 hours_pri: 8.44 num_pri: 1 fos: Y time_crit: Y ! end of coverpage abstract: line_1: The FOS GTO program includes a systematic study of degenerate stars line_2: in binary systems, both in the field and in globular clusters, plus a handful line_3: of related objects. For the isolated field systems, the emphasis is on spectro- line_4: photometry (in many cases time-resolved over a pulse or orbital period) and line_5: spectropolarimetry, to observe the effects of the intense ionizing flux emitted line_6: by the compact object on the nearby normal star and/or accretion disk. While line_7: some such effects are seen from the ground, they should be far more spectacular line_8: in the UV. The specific program in this proposal is UV spectropolarimetry of line_9: the polar, EF-Eri. ! ! 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 ! lname: ANDERSON fname: SCOTT mi: F. inst: UNIVERSITY OF WASHINGTON country: USA ! lname: DOWNES fname: RONALD mi: A. inst: SPACE TELESCOPE SCIENCE INSTITUTE country: USA ! lname: ALLEN fname: RICHARD mi: P. inst: UNIVERSITY OF ARIZONA country: USA ! ! end of general_form_proposers block general_form_text: question: 2 section: 1 line_1: ! question: 3 section: 1 line_1: The polar EF Eri will be observed, with UV FOS spectro- line_2: polarimetry as a function of binary orbital phase. ! question: 4 section: 0 line_1: For this program, HST/FOS is needed primarily because of its line_2: high efficiency in the UV and spectroplarimetric capability, line_3: as such observations are essential for understanding the polars. line_4: These systems should show especially strong spectropolarimetric line_5: variations in the UV, modulated with the binary orbital period. ! question: 5 section: 1 line_1: Observations in this program are time critical. As the target line_2: is a binary system, the POLSCANs need to be obtained at discrete line_3: binary phases in order to properly model the system. The exposure line_4: time in each POLSCAN is intended to allow completion of one line_5: NON-INT POLSCAN=16B in the visibiilty window of a single HST line_6: orbit. The sepration in binary phases between subsequent POLSCANS line_7: corresponds to a time passage of about 96 minutes, so that the line_8: observations can be accomplished in a single visit with the line_9: sequence of POLSCANs occuring in a contiguous series of HST line_10: orbits. The target acquisition exposure time is based on the line_11: star having a magnitude of V=15 (1-sigma fainter than average). ! question: 7 section: 1 line_1: Data reduction will be performed at the ST ScI, and the analysis will be line_2: performed using FOS IDT computer facilities. The EF Eri program involves line_3: analysis of FOS spectropolarimetry. The FOS IDT, of course, has extensive line_4: practical experience in the use of STSDAS (and other IRAF-related) software line_5: to reduce and analyze all the various types of FOS data. ! question: 8 section: 1 line_1: Although not essential to our scientific programs, we will try to obtain line_2: simultaneous (or contemporaneous) observations of EF Eri from the ground. ! question: 9 section: 0 line_1: Partial data from about a dozen different FOS/GTO programs (and many line_2: OV and SV proposals) have been obtained to date. This proposal includes line_3: augmentation time related to the following FOS/GTO and SAO proposals line_4: 1051, 3202, and 3280 (Mass Exchange Binaries). ! question: 10 section: 1 line_1: Data analysis, research assistant support, and funding will be provided under line_2: NASA's FOS GTO contract(s). The FOS IDT support includes a total of roughly line_3: 30 Ph.D. astronomers and graduate students at 5 different institutions. At line_4: each institution one or more workstations (typically Sparc 2's or the line_5: equivalent), plus one or more Microvaxes (or equivalent) are essentially line_6: devoted to processing of HST data. ! question: 13 section: 1 line_1: FOS spectropolarimetry will be obtained as a function of orbital period line_2: in EF Eri. ! !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: EF-ERI name_2: 2A0311-227 name_3: GSC-I-6439-0120 descr_1: A,153 pos_1: RA=03H 14M 13.03S+/-0.01S, pos_2: DEC=-22D 35' 41.3"+/-0.3", pos_3: PLATE-ID=027U equinox: 2000 comment_1: NOTE THAT THIS STAR APPEARS ON comment_2: TWO GSSS PLATES. fluxnum_1: 1 fluxval_1: V = 14.6 +/- 0.3 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 targname: EF-ERI config: FOS/BL opmode: ACQ/BINARY aperture: 4.3 sp_element: MIRROR num_exp: 1 time_per_exp: 7.3S fluxnum_1: 1 priority: 1 param_1: BRIGHT=33000, param_2: FAINT=660 req_1: ONBOARD ACQ FOR 2-9; req_2: CYCLE 3 /1-9; req_3: SEQ 1-9 WITHIN 4D; req_4: ZERO-PHASE JD2443944.9522+/-0.0005D; req_5: PERIOD 0.056265925D+/-0.004S; comment_1: PHASE-ZERO IS FROM A. AND A., comment_2: 186, 120, 1987. ! linenum: 2.000 targname: EF-ERI config: FOS/BL opmode: ACCUM aperture: 4.3 sp_element: G130H num_exp: 1 time_per_exp: 1440S fluxnum_1: 1 priority: 1 param_1: POLSCAN=16B req_1: PHASE 0.10+/-0.10 OF REF 1; req_2: SEQ 2-9 NO GAP; req_3: NON-INT / 2-9; comment_1: POLARIZATION FOR EF ERI, TOTAL TIME comment_2: 192 MINUTES. EACH POLSCAN=16B MUST FIT comment_3: INTO ONE NON-INTERRUPTED HST ORBIT; comment_4: IF NOT POSSIBLE TO FIT IN THIS comment_5: FASHION, CONTACT US. ! linenum: 3.000 targname: EF-ERI config: FOS/BL opmode: ACCUM aperture: 4.3 sp_element: G130H num_exp: 1 time_per_exp: 1440S fluxnum_1: 1 priority: 1 param_1: POLSCAN=16B req_1: PHASE 0.285+/-0.010 OF REF 1; ! linenum: 4.000 targname: EF-ERI config: FOS/BL opmode: ACCUM aperture: 4.3 sp_element: G130H num_exp: 1 time_per_exp: 1440S fluxnum_1: 1 priority: 1 param_1: POLSCAN=16B req_1: PHASE 0.47+/-0.010 OF REF 1; ! linenum: 5.000 targname: EF-ERI config: FOS/BL opmode: ACCUM aperture: 4.3 sp_element: G130H num_exp: 1 time_per_exp: 1440S fluxnum_1: 1 priority: 1 param_1: POLSCAN=16B req_1: PHASE 0.655+/-0.010 OF REF 1; ! linenum: 6.000 targname: EF-ERI config: FOS/BL opmode: ACCUM aperture: 4.3 sp_element: G130H num_exp: 1 time_per_exp: 1440S fluxnum_1: 1 priority: 1 param_1: POLSCAN=16B req_1: PHASE 0.84+/-0.010 OF REF 1; ! linenum: 7.000 targname: EF-ERI config: FOS/BL opmode: ACCUM aperture: 4.3 sp_element: G130H num_exp: 1 time_per_exp: 1440S fluxnum_1: 1 priority: 1 param_1: POLSCAN=16B req_1: PHASE 0.025+/-0.010 OF REF 1; ! linenum: 8.000 targname: EF-ERI config: FOS/BL opmode: ACCUM aperture: 4.3 sp_element: G130H num_exp: 1 time_per_exp: 1440S fluxnum_1: 1 priority: 1 param_1: POLSCAN=16B req_1: PHASE 0.21+/-0.010 OF REF 1; ! linenum: 9.000 targname: EF-ERI config: FOS/BL opmode: ACCUM aperture: 4.3 sp_element: G130H num_exp: 1 time_per_exp: 1440S fluxnum_1: 1 priority: 1 param_1: POLSCAN=16B req_1: PHASE 0.395+/-0.010 OF REF 1; ! ! end of exposure logsheet ! No scan data records found