! File: 1091C.PROP ! Database: PEPDB ! Date: 16-FEB-1994:01:19:36 coverpage: title_1: ULTRAVIOLET PULSATIONS FROM X-RAY PULSARS sci_cat: STELLAR ASTROPHYSICS proposal_for: GTO/HSP 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 PULSARS hours_pri: 10.51 num_pri: 16 pi_position: PROFESSOR OF ASTRONO ! end of coverpage abstract: line_1: We propose to obtain high-speed photometry at line_2: ultraviolet wavelengths of all the pulsing X-ray line_3: heated stellar atmospheres of the companion stars to line_4: the neutron stars in the binaries and to create list line_5: of X-ray pulsars with optical pulsations that can be line_6: further observed for such purposes as determining line_7: the mass ratios of the binary system. Revision line_8: History: Prepared for future cycles submission-- line_9: BJW 4/24/92; Cycle 3 to cycle 2; PRISM to SINGLE-- line_10: BJW 8/27/92; ! ! end of abstract general_form_proposers: lname: ROBINSON fname: EDWARD mi: L. inst: TEXAS, UNIVERSITY OF country: USA ! lname: BLESS fname: ROBERT mi: C. inst: WISCONSIN, UNIVERSITY OF country: USA ! lname: VAN CITTERS fname: G. mi: W. inst: NATIONAL SCIENCE FOUNDATION country: USA ! lname: DOLAN fname: JOSEPH mi: F. inst: NASA, GODDARD SPACE FLIGHT CENTER country: USA ! lname: WHITE fname: RICHARD mi: L. inst: SPACE TELESCOPE SCIENCE INSTITUTE country: USA ! lname: ELLIOT fname: JAMES mi: L. inst: MASSACHUSETTS INSTITUTE OF TECHNOLOGY country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: We propose to obtain ultraviolet high speed line_2: photometry of twenty pulsing X-ray binaries with line_3: known optical counterparts. Both single color and line_4: simultaneous two-color observations are planned for line_5: very short period (and generally faintest) systems line_6: and the longer period (and usually brighter) line_7: systems, repsectively. The integration times will line_8: range from millisecond to one second samples, line_9: spanning 2000-3000 seconds total per object. Cycle line_10: 1 ! question: 4 section: 1 line_1: Observations with ST are necessary because: 1) line_2: Pulse amplitudes are anticipated to be extermemly line_3: small (less than 0.1% in optical regime), requiring line_4: the small apertures and dark background of ST; 2) line_5: Pulse amplitudes should be larger in ultraviolet line_6: than optical region, as they are due to line_7: reflected/reprocessed X-rays from neutron stars; 3) line_8: Ground based observations of X-ray pulsars with line_9: short periods are distorted by atmospheric line_10: scintillation. Data from ST is intrinsically free of line_11: the effect, which distorts pulse shapes. ! question: 13 section: 1 line_1: An ultraviolet high speed photometric survey of line_2: twenty pulsing X-ray binaries with known optical line_3: counterparts is proposed. Single and two-color data line_4: are desired to study the X-ray heated stellar line_5: photospheres of the companion stars by their neutron line_6: star primaries. A comparison of the X-ray period to line_7: the optical (or ultraviolet) period directly yields line_8: the mass ratio of the binary. ! !end of general form text general_form_address: lname: ROBINSON fname: EDWARD mi: L. category: CON inst: DEPARTMENT OF ASTRONOMY addr_1: UNIVERSITY OF TEXAS city: AUSTIN state: TX zip: 78712 country: USA phone: (512)471-4461 ! lname: BLESS fname: ROBERT mi: C. category: PI inst: UNIVERSITY OF WISCONSIN addr_1: WASHBURN OBSERVATORY addr_2: 475 N. CHARTER STREET city: MADISON state: WI zip: 53706 country: USA phone: (608)262-1715 ! ! end of general_form_address records fixed_targets: targnum: 9 name_1: A0535+26 descr_1: X-RAY PULSAR descr_2: SAO77348 pos_1: RA = 5H 38M 54.562S +/- 1", pos_2: DEC = +26D 18' 57.195" +/- 1" equinox: 2000 comment_1: POSREF = SAO, WITH PM. fluxnum_1: 1 fluxval_1: V = 9.1, fluxval_2: TYPE = 09.7IIIE ! targnum: 11 name_1: GX304-1 descr_1: X-RAY PULSAR pos_1: RA = 13H 01M 17.193S +/- 2", pos_2: DEC = -61D 36' 6.372" +/- 2" equinox: 2000 comment_1: POSREF = ROBINSON. comment_2: POSREF FROM MASON ET AL. 1978, comment_3: MNRAS, 184, 45P. fluxnum_1: 1 fluxval_1: V = 13.9, fluxval_2: TYPE = B2VNE ! targnum: 12 name_1: 4U0900-40 descr_1: ^ descr_2: SAO220767 pos_1: RA = 9H 2M 6.779S +/- 1", pos_2: DEC = -40D 33' 17.635" +/- 1" equinox: 2000 comment_1: POSREF = SAO, WITH PM. fluxnum_1: 1 fluxval_1: V = 6.9, fluxval_2: TYPE = B0.5IB ! targnum: 13 name_1: 4U1145-619 descr_1: ^ descr_2: SAO251595 pos_1: RA = 11H 48M 0.084S +/- 1", pos_2: DEC = -62D 12' 23.996" +/- 1" equinox: 2000 comment_1: POSREF = SAO, WITH PM. fluxnum_1: 1 fluxval_1: V = 9.0, fluxval_2: TYPE = B1VNE ! targnum: 14 name_1: 1E1145.1-6141 descr_1: ^ pos_1: RA = 11H 47M 28.548S +/- 3", pos_2: DEC = -61D 57' 13.428" +/- 3" equinox: 2000 comment_1: POSREF = ROBINSON. comment_2: POSREF FROM HUTCHINGS ET AL. comment_3: 1981, A. J., 86, 871. fluxnum_1: 1 fluxval_1: V = 12, fluxval_2: TYPE = B1I ! targnum: 15 name_1: A1118-61 descr_1: ^ pos_1: RA = 11H 20M 57.233S +/- 1", pos_2: DEC = -61D 54' 57.992" +/- 1" equinox: 2000 comment_1: POSREF = ROBINSON. comment_2: POSREF FROM BRADT&MCCLINTOCK comment_3: 1983, ANN REV, 21, 13. fluxnum_1: 1 fluxval_1: V = 12.1, fluxval_2: TYPE = 09.5III-VE ! targnum: 16 name_1: 4U1538-52 descr_1: ^ pos_1: RA = 15H 42M 23.284S +/- 1", pos_2: DEC = -52D 23' 9.909" +/- 1" equinox: 2000 comment_1: POSREF = ROBINSON. comment_2: POSREF FROM BRADT&MCCLINTOCK comment_3: 1983, ANN REV, 21, 13. fluxnum_1: 1 fluxval_1: V = 14.5, fluxval_2: TYPE = B0I ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 8.500 targname: A0535+26 config: HSP/UV1 opmode: ACQ num_exp: 1 time_per_exp: 4S fluxnum_1: 1 priority: 2 param_1: DATA-FORMAT=WORD, req_1: ONBOARD ACQ FOR 9; req_2: CYCLE 2 / 8.5-16; req_3: PCS MODE FINE / 8.5-16; ! linenum: 9.000 targname: A0535+26 config: HSP/UV1 opmode: SINGLE aperture: 1.0 sp_element: F145M num_exp: ^ time_per_exp: 3000S fluxnum_1: ^ priority: 2 param_1: SAMPLE-TIME = 1.0, req_1: NON-INT / 9; ! linenum: 10.500 targname: GX304-1 config: HSP/UV1 opmode: ACQ num_exp: 1 time_per_exp: 10S fluxnum_1: 1 priority: 2 param_1: DATA-FORMAT=WORD, req_1: ONBOARD ACQ FOR 11; ! linenum: 11.000 targname: GX304-1 config: HSP/UV1 opmode: SINGLE aperture: 1.0 sp_element: F145M num_exp: ^ time_per_exp: 3000S fluxnum_1: ^ priority: 2 param_1: SAMPLE-TIME=1.0, req_1: NON-INT / 11; ! linenum: 11.500 targname: 4U0900-40 config: HSP/UV1 opmode: ACQ num_exp: 1 time_per_exp: 4S fluxnum_1: 1 priority: 2 param_1: DATA-FORMAT=WORD, req_1: ONBOARD ACQ FOR 12; ! linenum: 12.000 targname: 4U0900-40 config: HSP/UV1 opmode: SINGLE aperture: 1.0 sp_element: F145M num_exp: 1 time_per_exp: 3000S fluxnum_1: 1 priority: 2 param_1: SAMPLE-TIME = 1.0, req_1: NON-INT / 12; ! linenum: 12.500 targname: 4U1145-619 config: HSP/UV1 opmode: ACQ num_exp: 1 time_per_exp: 4S fluxnum_1: 1 priority: 2 param_1: DATA-FORMAT=WORD, req_1: ONBOARD ACQ FOR 13; ! linenum: 13.000 targname: 4U1145-619 config: HSP/UV1 opmode: SINGLE aperture: 1.0 sp_element: F145M num_exp: 1 time_per_exp: 3000S fluxnum_1: 1 priority: 2 param_1: SAMPLE-TIME=1.0, req_1: NON-INT / 13; ! linenum: 13.500 targname: 1E1145.1-6141 config: HSP/UV1 opmode: ACQ num_exp: 1 time_per_exp: 4S fluxnum_1: 1 priority: 2 param_1: DATA-FORMAT=WORD, req_1: ONBOARD ACQ FOR 14; ! linenum: 14.000 targname: 1E1145.1-6141 config: HSP/UV1 opmode: SINGLE aperture: 1.0 sp_element: F145M num_exp: ^ time_per_exp: 3000S fluxnum_1: ^ priority: 2 param_1: SAMPLE-TIME=1.0, req_1: NON-INT / 14; ! linenum: 14.500 targname: A1118-61 config: HSP/UV1 opmode: ACQ num_exp: 1 time_per_exp: 4S fluxnum_1: 1 priority: 2 param_1: DATA-FORMAT=WORD, req_1: ONBOARD ACQ FOR 15; ! linenum: 15.000 targname: A1118-61 config: HSP/UV1 opmode: SINGLE aperture: 1.0 sp_element: F145M num_exp: 1 time_per_exp: 3000S fluxnum_1: 1 priority: 2 param_1: SAMPLE-TIME=1.0, req_1: NON-INT / 15; ! linenum: 15.500 targname: 4U1538-52 config: HSP/UV1 opmode: ACQ num_exp: 1 time_per_exp: 4S fluxnum_1: 1 priority: 2 param_1: DATA-FORMAT=WORD, req_1: ONBOARD ACQ FOR 16; ! linenum: 16.000 targname: 4U1538-52 config: HSP/UV1 opmode: SINGLE aperture: 1.0 sp_element: F145M num_exp: ^ time_per_exp: 3000S fluxnum_1: ^ priority: 2 param_1: SAMPLE-TIME=1.0, req_1: NON-INT / 16; ! ! end of exposure logsheet ! No scan data records found