! File: 1097C.PROP ! Database: PEPDB ! Date: 16-FEB-1994:01:34:21 coverpage: title_1: X-RAY BINARIES PART 2 - CYC2HIGH sci_cat: STELLAR ASTROPHYSICS proposal_for: GTO/HSP cont_id: 1097 pi_fname: ROBERT pi_mi: C. pi_lname: BLESS pi_inst: WISCONSIN, UNIVERSITY OF pi_country: USA pi_phone: (608)262-1715 keywords_1: X-RAY BINARIES: NEUTRON STARS: BLACK HOLES hours_pri: 18.26 num_pri: 10 realtime: Y ! end of coverpage abstract: line_1: The extreme conditions existing in the near vicinity line_2: of neutron stars which are the secondaries in close line_3: binaries provide a laboratory in which we may line_4: observationally confirm or refine many of our basic line_5: theories of astrophysics. This program will monitor line_6: the photometric and polarimetric light curves of line_7: X-ray binaries at several different phases of the line_8: binary orbit in several different wavelength bands line_9: in the UV. The results will be related to the line_10: structure of, and physical conditions existing in, line_11: the gas streams (and possibly, the accretion disk) line_12: in these systems. Revision History: Clone 2958 v1.1 line_13: Removed comments concerning POL tube calibration-- line_14: BJW 6/24/92; ! ! end of abstract general_form_proposers: lname: VAN CITTERS fname: G. mi: W. inst: NATIONAL SCIENCE FOUNDATION country: USA ! lname: BLESS fname: ROBERT mi: C. inst: WISCONSIN, UNIVERSITY OF country: USA ! lname: DOLAN fname: JOSEPH mi: F. inst: NASA, GODDARD SPACE FLIGHT CENTER country: USA ! lname: ELLIOT fname: JAMES mi: L. inst: MASSACHUSETTS INSTITUTE OF TECHNOLOGY country: USA ! lname: ROBINSON fname: EDWARD mi: L. inst: TEXAS, UNIVERSITY OF country: USA ! lname: WHITE fname: RICHARD mi: L. inst: SPACE TELESCOPE SCIENCE INSTITUTE country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: The photometric and polarimetric light curves of line_2: each target will be built up by measuring the line_3: magnitude and linear polarization of the system in line_4: several different wavelength bands at several line_5: different phases in one orbit. Investigation of line_6: temporal variations in any gas stream will require line_7: observations over several different orbits. Some of line_8: these systems undergo substantial luminosity changes line_9: in the optical or X-ray region of the spectrum; the line_10: observations will be repeated for each different line_11: luminosity state the system assumes. Cycle 1 line_12: (SV/GTO) observations: Exposures (line numbers) 37 line_13: to 48 and lines 55-60 on 1 month centers. ! question: 4 section: 1 line_1: UV radiation is believed to originate closer to the line_2: accretion disk around the secondary in X-ray line_3: binaries than does longer wavelength optical line_4: radiation. Hence, observations in the UV, line_5: accessible only to ST, will probe a different region line_6: of the gas streams between the stars than can be line_7: done in the optical. It is expected that the line_8: results will be more directly relatable to the line_9: conditions existing near the neutron star. ! question: 5 section: 1 line_1: The observations must be correlated with the period line_2: of the binary to obtain the desired light curves. ! question: 7 section: 1 line_1: Given scattering from gas streams, the polarimetric line_2: (q, u) plot can determine the location of the stream line_3: relative to the line of centers and the orbital line_4: plane and the eccentricity of the scattering line_5: location's orbit about the primary (Dolan and Tapie, line_6: Astron. Ap., 139, 249, 1984; Dolan, Astron. Ap., line_7: 138, 1, 1984; and references cited therein). The line_8: phases at which photometric and polarimetric line_9: variability occur provide the longitudinal location line_10: of the gas streams; the magnitude of the varitions line_11: cn be related to the total amount of material in the line_12: stream. The ionization state of the stream can be line_13: determined from the dependence of the polarimetric line_14: variability on wavelength: Rayleigh scattering line_15: varies as the inverse 4th power of the wavelength line_16: and indicates neutral atoms as the scattering line_17: agents; Thomson scattering is independent of line_18: wavelength and indicate free electrons (i.e., line_19: ionized atoms) as the scattering agents. Variations line_20: in phase of features on the photometric and line_21: polarimetric light curves from orbit to orbit will line_22: indicate temporal changes in position of the line_23: scattering region in the gas streams. ! question: 12 section: 1 line_1: The X-ray binaries program is directly related to line_2: the first scientific objective listed in the HSP CEI line_3: specifications, "determination of the properties of line_4: ... X-ray binaries, gas streams and accretion disks line_5: in compact binary systems", and to the fifth line_6: scientific objective, "determination of the line_7: wavelength and time dependence of polarization in line_8: compact binaries". ! question: 13 section: 1 line_1: Photometric and polarimetric light curves of X-ray line_2: binaries will be established at several different UV line_3: wavelengths. Changes in these light curves will be line_4: monitored as a function of the luminosity state of line_5: the system. The results will be related to the line_6: structure of, and physical conditions in, the gas line_7: streams and accretion disk in these close binaries. ! !end of general form text general_form_address: lname: BLESS fname: R title: DR category: PI ! lname: BLESS fname: ROBERT mi: C. category: PI inst: UNIVERSITY OF WISCONSIN addr_1: SPACE ASTRONOMY LAB. addr_2: 1150 UNIVERSITY AVE. city: MADISON state: WI zip: 53706 country: USA phone: 608-262-1715 ! lname: DOLAN fname: JOSEPH mi: F. category: CON inst: NASA, GODDARD SPACE FLIGHT CENTER addr_1: CODE 681 city: GREENBELT state: MD zip: 20771 country: USA phone: (301)286-5920 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: HDE226868 name_2: SAO69181 descr_1: X-RAY BINARY pos_1: RA = 19H 58M 21.521S +/- 0.1", pos_2: DEC = +35D 12' 05.088" +/- 0.5" equinox: 2000 comment_1: SAO CATALOG WITH PM fluxnum_1: 1 fluxval_1: V=8.6 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 0.500 sequence_1: DEFINE sequence_2: ACQ2 targname: # config: HSP/UV2 opmode: ACQ num_exp: 1 time_per_exp: 3S fluxnum_1: 1 priority: # ! linenum: 0.600 sequence_1: DEFINE sequence_2: ACQP targname: # config: HSP/POL opmode: ACQ num_exp: 1 time_per_exp: 1S fluxnum_1: 1 priority: # ! linenum: 0.950 sequence_1: DEFINE sequence_2: ACQ1 targname: # config: HSP/UV1 opmode: ACQ num_exp: 1 time_per_exp: 3S fluxnum_1: 1 priority: # ! linenum: 1.000 sequence_1: DEFINE sequence_2: FIRST targname: # config: HSP/UV2 opmode: SINGLE aperture: 1.0 sp_element: F145M num_exp: 1 time_per_exp: 20S fluxnum_1: 1 priority: # param_1: SAMPLE-TIME=0.0000108, ! linenum: 2.000 sequence_1: DEFINE sequence_2: FIRST targname: # config: HSP/UV2 opmode: SINGLE aperture: 1.0 sp_element: F184W num_exp: 1 time_per_exp: 20S fluxnum_1: 1 priority: # param_1: SAMPLE-TIME=0.0000108, ! linenum: 3.000 sequence_1: DEFINE sequence_2: FIRST targname: # config: HSP/UV2 opmode: SINGLE aperture: 1.0 sp_element: F284M num_exp: 1 time_per_exp: 20S fluxnum_1: 1 priority: # param_1: SAMPLE-TIME=0.0000108, ! linenum: 4.000 sequence_1: DEFINE sequence_2: FIRST targname: # config: HSP/UV2 opmode: SINGLE aperture: 1.0 sp_element: F248M num_exp: 1 time_per_exp: 20S fluxnum_1: 1 priority: # param_1: SAMPLE-TIME=0.0000108, ! linenum: 5.000 sequence_1: DEFINE sequence_2: FIRST1 targname: # config: HSP/UV1 opmode: SINGLE aperture: 1.0 sp_element: F220W num_exp: 1 time_per_exp: 20S fluxnum_1: 1 priority: # param_1: SAMPLE-TIME=0.0000108, ! linenum: 6.000 sequence_1: DEFINE sequence_2: POL targname: # config: HSP/POL opmode: SINGLE aperture: POL0 sp_element: # num_exp: 1 time_per_exp: 30S fluxnum_1: 1 priority: # param_1: SAMPLE-TIME=0.1, req_1: SEQ 6-7 NON-INT; ! linenum: 7.000 sequence_1: DEFINE sequence_2: POL targname: # config: HSP/POL opmode: SINGLE aperture: POL90 sp_element: # num_exp: 1 time_per_exp: 30S fluxnum_1: 1 priority: # param_1: SAMPLE-TIME=0.1, ! linenum: 8.000 sequence_1: DEFINE sequence_2: POL targname: # config: HSP/POL opmode: SINGLE aperture: POL45 sp_element: # num_exp: 1 time_per_exp: 30S fluxnum_1: 1 priority: # param_1: SAMPLE-TIME=0.1, req_1: SEQ 8-9 NON-INT; ! linenum: 9.000 sequence_1: DEFINE sequence_2: POL targname: # config: HSP/POL opmode: SINGLE aperture: POL135 sp_element: # num_exp: 1 time_per_exp: 30S fluxnum_1: 1 priority: # param_1: SAMPLE-TIME=0.1, ! linenum: 23.000 sequence_1: DEFINE sequence_2: REP targname: # config: HSP/UV2 opmode: SINGLE aperture: 1.0 sp_element: F248M num_exp: 1 time_per_exp: 20S fluxnum_1: 1 priority: # param_1: SAMPLE-TIME=0.0000108, ! linenum: 24.900 sequence_1: USE ACQP targname: HDE226868 priority: 2 req_1: ONBOARD ACQ FOR 25-28.1; req_2: CYCLE 3 / 24.9-33.1; req_3: SEQ 24.9-28.1 NO GAP; ! linenum: 25.000 sequence_1: USE sequence_2: POL targname: HDE226868 sp_element: F216M time_per_exp: X6 priority: ^ ! linenum: 25.100 sequence_1: USE sequence_2: POL targname: HDE226868 sp_element: F216M time_per_exp: X6 priority: ^ ! linenum: 26.000 sequence_1: ^ targname: HDE226868 sp_element: F237M time_per_exp: X6 priority: ^ ! linenum: 26.100 sequence_1: ^ targname: HDE226868 sp_element: F237M time_per_exp: X6 priority: ^ ! linenum: 27.000 sequence_1: ^ targname: HDE226868 sp_element: F327M time_per_exp: X6 priority: ^ ! linenum: 27.100 sequence_1: USE sequence_2: POL targname: HDE226868 sp_element: F327M time_per_exp: X6 priority: 2 ! linenum: 28.000 sequence_1: USE sequence_2: POL targname: HDE226868 sp_element: F277M time_per_exp: X6 priority: 2 ! linenum: 28.100 sequence_1: USE sequence_2: POL targname: HDE226868 sp_element: F277M time_per_exp: X6 priority: 2 ! linenum: 29.000 sequence_1: USE ACQP targname: HDE226868 priority: 2 req_1: ONBOARD ACQ FOR 29.1-29.2; req_2: SEQ 29-29.2 NO GAP; req_3: AFTER 28 BY 0.93D +/- 0.1D; ! linenum: 29.100 sequence_1: USE sequence_2: POL targname: ^ sp_element: F277M time_per_exp: X6 priority: 2 ! linenum: 29.200 sequence_1: USE sequence_2: POL targname: ^ sp_element: F277M time_per_exp: X6 priority: 2 ! linenum: 30.000 sequence_1: USE ACQP targname: HDE226868 priority: 2 req_1: ONBOARD ACQ FOR 30.1-30.2; req_2: SEQ 30-30.2 NO GAP; req_3: AFTER 28 BY 1.86D +/- 0.1D; ! linenum: 30.100 sequence_1: USE sequence_2: POL targname: ^ sp_element: F277M time_per_exp: X6 priority: 2 ! linenum: 30.200 sequence_1: USE sequence_2: POL targname: ^ sp_element: F277M time_per_exp: X6 priority: 2 ! linenum: 31.000 sequence_1: USE ACQP targname: HDE226868 priority: 2 req_1: ONBOARD ACQ FOR 31.1-31.2; req_2: SEQ 31-31.2 NO GAP; req_3: AFTER 28 BY 2.79D +/- 0.1D; ! linenum: 31.100 sequence_1: USE sequence_2: POL targname: HDE226868 sp_element: F277M time_per_exp: X6 priority: 2 ! linenum: 31.200 sequence_1: USE sequence_2: POL targname: ^ sp_element: F277M time_per_exp: X6 priority: 2 ! linenum: 32.000 sequence_1: USE ACQP targname: HDE226868 priority: 2 req_1: ONBOARD ACQ FOR 32.1-32.2; req_2: SEQ 32-32.2 NO GAP; req_3: AFTER 28 BY 3.72D +/- 0.1D; ! linenum: 32.100 sequence_1: USE sequence_2: POL targname: ^ sp_element: F277M time_per_exp: X6 priority: 2 ! linenum: 32.200 sequence_1: USE sequence_2: POL targname: ^ sp_element: F277M time_per_exp: X6 priority: 2 ! linenum: 33.000 sequence_1: USE ACQP targname: HDE226868 priority: 2 req_1: ONBOARD ACQ FOR 33.1-33.1; req_2: SEQ 33-33.1 NO GAP; req_3: AFTER 28 BY 4.65D +/- 0.1D; ! linenum: 33.100 sequence_1: USE sequence_2: POL targname: ^ sp_element: F277M time_per_exp: X6 priority: 2 ! ! end of exposure logsheet ! No scan data records found