! File: 2608C.PROP ! Database: PEPDB ! Date: 17-FEB-1994:09:13:09 coverpage: title_1: CONSTRAINTS ON CONTINUUM MODELS OF ACTIVE NUCLEI: FAST ULTRAVIOLET title_2: VARIATIONS sci_cat: QUASARS & AGN proposal_for: GO pi_title: DR. pi_fname: M. pi_mi: J. pi_lname: WARD pi_inst: OXFORD, UNIVERSITY OF pi_country: UK pi_phone: 44-865-273303 keywords_1: ACTIVE NUCLEII/RAPID CONTINUUM VARIABILITY hours_pri: 5.00 num_pri: 2 hsp: X pi_position: MRS. off_fname: P. off_lname: BAND off_title: SECRETARY off_inst: ASTROPHYSICS off_addr_1: KEBLE ROAD off_city: OXFORD off_zip: OX1 3RH off_country: UK off_phone: 44-865-273303 off_telex: 83295 NUCLOX G ! end of coverpage abstract: line_1: We propose to use the Fast Photometer to observe fast-timescale ultraviolet line_2: continuum variations in Active Nuclei. The two objects selected have the line_3: fastest observed X-ray variations down to 100 seconds, an observational limit line_4: set by the satellite sensitivity. Importantly, the Fourier Power-Spectrum of line_5: the X-ray data shows no sign that we have yet sampled the fastest variations. line_6: The large contribution of starlight, even through the smallest apertures, means line_7: that no ground-based experiment can approach the sensitivity to short line_8: timescales variations that the HSP can potentially observe. The proposed line_9: ultraviolet observations can be made near-simultaneously through two line_10: ultraviolet filters, giving crude two color spectral information that will help line_11: define the characteristics of the variable component. Using the HSP we can line_12: improve the time resolution by an order of magnitude, thus setting strong line_13: constraints of models of compact source energy generation. ! ! end of abstract general_form_proposers: lname: DONE fname: C. title: DR. inst: GODDARD country: USA ! lname: FABIAN fname: A. title: DR. mi: C. inst: CAMBRIDGE, UNIVERSITY OF country: UK esa: X ! lname: WARD fname: M. title: P.I. mi: J. inst: OXFORD, UNIVERSITY OF country: UK esa: X ! lname: ELVIS fname: MARTIN title: DR. mi: S. inst: CFA country: USA ! lname: LAWRENCE fname: A. title: DR. inst: QUEEN MARY WESTFIELD COLLEGE, LONDON country: UK esa: X ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: All exposures are Cycle 1 exposures ! question: 13 section: 1 line_1: We propose to use the Fast Photometer to observe fast-timescale ultraviolet line_2: continuum variations in Active Nuclei. The two objects selected have the line_3: fastest observed X-ray variations down to 100 seconds, an observational limit line_4: set by the satellite sensitivity. Importantly, the Fourier Power-Spectrum of line_5: the X-ray data shows no sign that we have yet sampled the fastest variations. line_6: The large contribution of starlight, even through the smallest apertures, means line_7: that no ground-based experiment can approach the sensitivity to short line_8: timescales variations that the HSP can potentially observe. The proposed line_9: ultraviolet observations can be made near-simultaneously through two line_10: ultraviolet filters, giving crude two color spectral information that will help line_11: define the characteristics of the variable component. Using the HSP we can line_12: improve the time resolution by an order of magnitude, thus setting strong line_13: constraints of models of compact source energy generation. ! !end of general form text general_form_address: lname: WARD fname: M. mi: J. title: DR. category: PI inst: ASTROPHYSICS addr_1: KEBLE ROAD city: OXFORD OX1 3RH country: U.K. phone: 44-865-273303 telex: 83295 NUCLOX G ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: NGC4051 descr_1: SEYFERT GALAXY pos_1: RA=12H 03M 09.67S +/- 0.04S, pos_2: DEC=+44D 31' 52.3" +/- 0.4" equinox: 2000 pm_or_par: N rv_or_z: Z=0.002 plate_req: N plate_avail: Y fluxnum_1: 1 fluxval_1: V=15.0 +/- 0.5 ! targnum: 2 name_1: NGC6814 descr_1: ^ pos_1: RA=19H 42M 40.70S +/- 0.08S, pos_2: DEC=-10D 19' 25.5" +/- 1.2" equinox: ^ pm_or_par: ^ rv_or_z: Z=0.005 plate_req: N plate_avail: Y fluxnum_1: 1 fluxval_1: V=15.5 +/- 0.5 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 targname: NGC4051 config: WFC opmode: IMAGE aperture: ALL sp_element: F194W num_exp: 1 time_per_exp: 300S fluxnum_1: 1 priority: 1 req_1: CYCLE 1 / 1-4; req_2: EARLY ACQ FOR 1.5-2; comment_1: USED TO DETERMINE WHETHER NUCLEUS CAN comment_2: BE ACQUIRED WITH HSP ONBOARD ACQ OR comment_3: WHETHER OFFSET TARGET ACQ IS NEEDED. ! linenum: 1.500 targname: NGC4051 config: HSP/UV2 opmode: ACQ num_exp: 1 time_per_exp: 1M fluxnum_1: 1 priority: 1 req_1: ONBOARD ACQ FOR 2; req_2: REQ DATA FROM 1; comment_1: MAY HAVE TO ACQUIRE OFFSET TARGET comment_2: IF NUCLEUS IS NOT SUFFICIENTLY comment_3: STAR-LIKE TO ACQUIRE DIRECTLY comment_4: WITH ONBOARD ACQ (DETERMINED FROM comment_5: WFC EARLY ACQ) ! linenum: 2.000 targname: NGC4051 config: HSP/UV2 opmode: PRISM aperture: 1.0 sp_element: F262M/F145M num_exp: ^ time_per_exp: 125M fluxnum_1: ^ priority: 1 param_1: SAMPLE-TIME=0.2, param_2: 2ND-SAMPLE=0.8 req_1: AFTER 1 BY 60D +/- 15D ! linenum: 3.000 targname: NGC6814 config: WFC opmode: IMAGE aperture: ALL sp_element: F194W num_exp: 1 time_per_exp: 300S fluxnum_1: 1 priority: 1 req_1: EARLY ACQ FOR 3.5-4; comment_1: USED TO DETERMINE WHETHER NUCLEUS CAN comment_2: BE ACQUIRED WITH HSP ONBOARD ACQ OR comment_3: WHETHER OFFSET TARGET ACQ IS NEEDED. ! linenum: 3.500 targname: NGC6814 config: HSP/UV2 opmode: ACQ num_exp: 1 time_per_exp: 1M fluxnum_1: 1 priority: 1 req_1: ONBOARD ACQ FOR 4; req_2: REQ DATA FROM 3; comment_1: MAY HAVE TO ACQUIRE OFFSET TARGET comment_2: IF NUCLEUS IS NOT SUFFICIENTLY comment_3: STAR-LIKE TO ACQUIRE DIRECTLY comment_4: WITH ONBOARD ACQ (DETERMINED FROM comment_5: WFC EARLY ACQ) ! linenum: 4.000 targname: NGC6814 config: HSP/UV2 opmode: PRISM aperture: 1.0 sp_element: F262M/F145M num_exp: ^ time_per_exp: 125M fluxnum_1: ^ priority: 1 param_1: SAMPLE-TIME=0.2, param_2: 2ND-SAMPLE=0.8 req_1: AFTER 3 BY 60D +/- 15D ! ! end of exposure logsheet ! No scan data records found