! File: 1148C.PROP ! Database: PEPDB ! Date: 16-FEB-1994:03:37:31 coverpage: title_1: HOT PULSATING WHITE DWARFS sci_cat: STELLAR ASTROPHYSICS sci_subcat: SUBLUMINOUS STARS proposal_for: GTO/HRS pi_title: PROF. pi_fname: JOHN pi_mi: B. pi_lname: HUTCHINGS pi_inst: DOMINION ASTROPHYSICAL OBSERVATORY pi_country: CANADA pi_phone: (604) 388-3909 keywords_1: HOT STARS, WHITE DWARFS, PULSATIONAL INSTABILITIES hours_pri: 1.50 num_pri: 2 time_crit: X pi_position: PROFESSOR ! end of coverpage abstract: line_1: Continuous series of spectra with 1 minute time resolution will be taken of two line_2: hot subdwarfs with pulsational instabilities. The high time resolution will line_3: allow anlysis of the UV continuum variations which will reveal the type of line_4: pulsation. Suitable data timing should also reveal line feature changes in line_5: profile and velocity. One star is an eclipsing binary and data will be taken line_6: at key orbital phases. ! ! end of abstract general_form_proposers: 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: PG1159-035 will be obseerved for ~30 minutes with 1 minute readouts, with the line_2: low dispersion HRS grating. Any time will do, and the time is to be split into line_3: two 15 minute segments. line_5: BE UMA will be observed in the same way at 3 different times, at binary phases line_6: 0.5,0.0, and 0.25 or 0.75. These should be during the same or adjacent orbital line_7: cycles. ! question: 4 section: 1 line_1: UV spectroscopy of faint objects with high time resolution cannot be done any line_2: other way. Ground-based supporting observations will be planned. ! question: 5 section: 1 line_1: BE UMa orbital phase is important. Eclipse phase observations need timing line_2: accuracy of 5 minutes or better. ! question: 6 section: 1 line_1: Continuous 15 minute observations required to do time analysis. ! question: 7 section: 1 line_1: All data will be analysed at DAO after ST standard processing, using a VAX line_2: extensive spectroscopic software. ! question: 8 section: 1 line_1: Advance notice of scheduling to allow ground-based support would be helpful. line_2: This means observations should preferably be done when 12h RA is in night sky. line_3: All resources for data anlysis and personnel support. ! question: 10 section: 1 line_1: All resources for analysis and personnel support. ! question: 13 section: 1 line_1: HRS data will be take with 1 minute time resolution of PG1159-035 and BE UMa, line_2: to study UV pulsation phenomena. BE UMa data will be taken at 3 binary phases. ! !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 RD. addr_2: R.R. #5 addr_3: V8X 4M6 city: VICTORIA country: CANADA ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: PG1159-035 descr_1: WD pos_1: RA=11H 59M 12.2S +/- 1", pos_2: DEC=-03D 28' 56" +/- 1" equinox: 1950 ! targnum: 2 name_1: BE-UMA descr_1: WD+M BINARY pos_1: RA=11H 55M 9.8S +/- 1", pos_2: DEC=49D 13' 1" +/- 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 targname: PG1159-035 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-A2 num_exp: 1 time_per_exp: 30S priority: 1 req_1: ONBOARD ACQ FOR 2,3; req_2: CYCLE 2 /1-7 ! linenum: 2.000 targname: ^ config: ^ opmode: ACCUM aperture: 2.0 sp_element: G140L wavelength: 1380-1660 num_exp: 15 time_per_exp: 1M priority: ^ ! linenum: 3.000 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: ^ wavelength: ^ num_exp: ^ time_per_exp: ^ priority: ^ req_1: AFTER 2 BY 2D ! linenum: 4.000 targname: BE-UMA config: ^ opmode: ACQ aperture: 2.0 sp_element: MIRROR-A2 num_exp: 1 time_per_exp: 30S priority: ^ req_1: ONBOARD ACQ FOR 5-7 ! linenum: 5.000 targname: ^ config: ^ opmode: ACCUM aperture: 2.0 sp_element: G140L wavelength: 1380-1660 num_exp: 15 time_per_exp: 1M priority: 1 req_1: ZERO-PHASE JD2444998.281 +/- 0.002D; req_2: PERIOD 2.291171D +/- 0.000001D; req_3: PHASE 0.007 +/- .001 comment_1: ALTERNATIVE PHASE 0.989+/-.001 ! linenum: 6.000 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: ^ wavelength: ^ num_exp: 15 time_per_exp: 1M priority: ^ req_1: ZERO-PHASE JD2444998.281 +/- 0.002D; req_2: PERIOD 2.291171D +/- 0.000001D; req_3: PHASE 0.25 +/- .06 comment_1: ALTERNATIVE PHASE 0.75+/-.06 ! linenum: 7.000 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: ^ wavelength: ^ num_exp: 15 time_per_exp: 1M priority: 1 req_1: ZERO-PHASE JD2444998.281 +/- 0.002D; req_2: PERIOD 2.291171D +/- 0.000001D; req_3: PHASE 0.50 +/- .06; GROUP 4-7 WITHIN 10D comment_1: ALL OBSERVATIONS ARE CONTINUOUS FOR comment_2: 15 MINUTES WITH READOUTS EVERY 1 MIN. comment_3: NOTE TIME OF 6. START TIMES ARE comment_4: GIVEN, AS TWO ALTERNATIVES ACCURATE comment_5: TO ~5 MINUTES. ! ! end of exposure logsheet ! No scan data records found