! File: 4984C.PROP ! Database: PEPDB ! Date: 23-FEB-1994:13:40:54 coverpage: title_1: UV LINE PROFILES OF AM HER STARS:LATER CYCLE - EXPO sci_cat: STELLAR ASTROPHYSICS sci_subcat: SUBLUMINOUS STARS proposal_for: GTO/HRS pi_title: DR. pi_fname: JOHN pi_mi: B. pi_lname: HUTCHINGS pi_inst: DOMINION ASTROPHYSICAL OBSERVATORY pi_country: CANADA pi_phone: (604) 388-0018 keywords_1: AM HER STARS, EMISSION LINE PROFILES, MAGNETIC FIELDS hours_pri: 2.00 num_pri: 3 ! end of coverpage abstract: line_1: AM Her type binaries contain highly magnetic accreting White Dwarf stars. line_2: Emission lines originate in complex columns of accreting material and their line_3: profiles change significantly in times of a few minutes as the line of sight line_4: geometry alters with binary phase. IUE data reveal that emission lines are line_5: present in the UV spectrum but lack the spectral and time resolution to study line_6: profile changes. The UV resonance lines arise in different parts of the line_7: accretion column from the visible - so will allow new insights into the line_8: accretion mechanisms. ! ! end of abstract general_form_proposers: lname: COWLEY fname: A. mi: P. inst: ARIZONA STATE UNIVERSITY country: USA ! lname: CRAMPTON fname: D. inst: DOMINION ASTROPHYSICAL OBSERVATORY country: CANADA ! lname: HUTCHINGS fname: JOHN mi: B. inst: DOMINION ASTROPHYSICAL OBSERVATORY country: CANADA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: The longest available continuous run is required on each object. In addition, line_2: the object should not be in one of its (rare) low states. Thus, scheduling is line_3: required to be known far enough ahead to react to the known state of the line_4: target. line_6: Readouts are required every 5 minutes for as long as the target is available. line_7: If earth occultation time is not charged it may help to acquire the target line_8: before earth occultation, and start observing immediately it becomes available line_9: again. ! question: 4 section: 1 line_1: ST is the only instrument able to acquire these UV data. HRS lowest dispersion line_2: provides the best compromise of S/N and time and spectral resolution. ! question: 5 section: 1 line_1: Observations should be aborted or rescheduled if star is in low state. ! question: 6 section: 1 line_1: Uninterrupted exposures required to provide continuous coverage of rapidly line_2: changing spectral lines. ! question: 7 section: 1 line_1: All data reductions can be made at DAO from ST standard output. Line line_2: velocities, profiles and intensities will be derived to study orbital and line_3: non-orbital velocities, and derive models for the mass-transfer process. line_4: Continuum data will simultaneously yield spectral index or temperature changes, line_5: and possibly varying cyclotron emission overtones. ! question: 8 section: 1 line_1: Need to know scheduled observation date in time to obtain ground-based line_2: information on high/low state, and possibly request rescheduling. ! question: 10 section: 1 line_1: All scientific data reductions and other support. ! question: 13 section: 1 line_1: Continuous 5m readouts will be taken for >/= 30 minutes of the UV spectra of 3 line_2: AM Her binaries, at resolution 2000 in the far UV. ! !end of general form text general_form_address: lname: HUTCHINGS fname: JOHN mi: B. title: PROF. category: PI inst: DOMINION ASTROPHYSICAL OBSERVATORY addr_1: 5071 W. SAANICH ROAD addr_2: R.R. #5 addr_3: V8X 4M6 city: VICTORIA state: BC country: CANADA phone: (604) 388-0018 telex: 0497295 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: EF-ERI descr_1: MAWD BINARY pos_1: RA = 03H 14M 13.08S +/- 1", pos_2: DEC = -22D 35' 41.5" +/- 1" equinox: 2000 ! targnum: 2 name_1: VV-PUP descr_1: MAWD BINARY pos_1: RA = 08H 12M 52S +/- 1", pos_2: DEC = -18D 53' 52" +/- 1" equinox: 1950 ! targnum: 3 name_1: AM-HER descr_1: MAWD BINARY pos_1: RA = 18H 14M 58.6S +/- 1", pos_2: DEC = 49D 50' 55" +/- 1" equinox: 1950 comment_1: UV FLUXES KNOWN FROM IUE ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 sequence_1: DEFINE sequence_2: OBS. targname: # config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-N2 num_exp: 1 time_per_exp: 10S priority: # param_1: SEARCH-SIZE=3, param_2: FAINT=400 req_1: ONBOARD ACQ FOR 2; req_2: DARK TIME ! linenum: 1.200 sequence_1: ^ targname: ^ config: ^ opmode: ^ aperture: 2.0 sp_element: MIRROR-N2 num_exp: 1 time_per_exp: 53.0S fluxnum_1: 1 priority: 1 param_1: SEARCH-SIZE=1, param_2: MAP=END-POINT, param_3: LOCATE=NO, param_4: FAINT=0 req_1: ONBOARD ACQ FOR 2 comment_1: TAKE MAP AFTER SLEW, WITH comment_2: 200 MSEC INTEGRATIONS ! linenum: 2.000 sequence_1: ^ targname: ^ config: ^ opmode: ACCUM aperture: 2.0 sp_element: G140L wavelength: 1380-1660 num_exp: 8 time_per_exp: 5M priority: # req_1: NON-INT ! linenum: 3.000 sequence_1: USE sequence_2: OBS. targname: EF-ERI priority: 1 req_1: CYCLE 9 ! ! end of exposure logsheet ! No scan data records found