! File: 1050C.PROP ! Database: PEPDB ! Date: 15-FEB-1994:23:47:57 coverpage: title_1: SPECTROPHOTOMETRY OF COOL WHITE DWARFS sci_cat: STELLAR ASTROPHYSICS proposal_for: GTO/FOS pi_title: PROF. pi_fname: J. ROGER pi_mi: P pi_lname: ANGEL pi_inst: UNIVERSITY OF ARIZONA pi_country: USA pi_phone: 602-621-6541 keywords_1: COOL WHITE DWARFS hours_pri: 3.80 num_pri: 3 fos: Y pi_position: PROF. OF ASTRONOMY ! end of coverpage abstract: line_1: Ultraviolet spectrophotometry will be used to determine whether the ultraviolet line_2: blanketing of the coolest DA, DC and DK degenerate stars differ due to the line_3: presence of molecular hydrogen and/or heavy metallic elements and/or carbon and line_4: whether the coolest DC-DK stars have hydrogen-rich atmospheres. The second line_5: question may hold implications for the apparent "cut-off" in the white dwarf line_6: luminosity function at Log L/L(sun) = -4, the disk star formation history and line_7: age. ! ! end of abstract general_form_proposers: lname: BEAVER fname: EDWARD title: DR. inst: UC, SAN DIEGO country: USA ! lname: BURBIDGE fname: E. MARGARET title: DR. inst: UC, SAN DIEGO country: USA ! lname: MARGON fname: BRUCE title: DR. inst: UNIVERSITY OF WASHINGTON country: USA ! lname: ANGEL fname: J. ROGER title: DR. mi: P inst: UNIVERSITY OF ARIZONA country: USA ! lname: FORD fname: HOLLAND title: DR. mi: C inst: JOHNS HOPKINS UNIVERSITY country: USA ! lname: BARTKO fname: FRANK title: DR. inst: MARTIN MARIETTA CORPORATION country: USA ! lname: DAVIDSEN fname: ARTHUR title: DR. mi: F inst: JOHNS HOPKINS UNIVERSITY country: USA ! lname: HARMS fname: RICHARD title: DR. mi: J inst: APPLIED RESEARCH CORPORATION country: USA ! lname: BOHLIN fname: RALPH title: DR. inst: SPACE TELESCOPE SCIENCE INSTITUTE country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: Three stars will be observed spectrophotometrically with the FOS. line_4: Targets stars should all be bright enough to be in the Guide Star Catalog. line_5: Catalog position will need to be adjusted to epoch of observation because of line_6: significant proper motion. The proper motions on the forms were taken from LHS line_7: Catalogue-Second Edition by William J. Layten, Univ. of Minn., 1979. ! question: 4 section: 1 line_1: Ultraviolet spectrophotometry is required below 3000A. IUE is not sensitive line_2: enough. ! question: 5 section: 1 line_1: The SV prerequisite programs for all FOS observations in this program are: line_2: Prop ID 2195 FOS Target Acquisition Tests All observations line_3: Prop ID 1317 Int./Ext. Wavelength Offsets 1st target line_4: Prop ID 1318 Spectral Flat Fields 1st target line_5: Prop ID 1320 Absolute Spectrophotometry 1st visit of bright targets ! question: 13 section: 1 line_1: Ultraviolet spectrophotometry will be used to determine whether the ultraviolet line_2: blanketing of the coolest DA, DC and DK degenerate stars differ due to the line_3: presence of molecular hydrogen and/or heavy metallic elements and/or carbon and line_4: whether the coolest DC-DK stars have hydrogen-rich atmospheres. Three objects line_5: are to be studied, LP 658-2, LHS 1126 and BPM 4729. ! !end of general form text general_form_address: lname: ALLEN fname: RICHARD title: DR. inst: STEWARD OBSERVATORY addr_1: UNIVERSITY OF ARIZONA city: TUCSON state: AZ zip: 85721 country: USA phone: 602-621-7661 telex: 467175 ! lname: ANGEL fname: J. ROGER mi: P title: DR. category: PI inst: STEWARD OBSERVATORY addr_1: UNIVERSITY OF ARIZONA city: TUCSON state: AZ zip: 85721 country: USA phone: 602-621-6541 telex: 467175 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: BPM4729 descr_1: WHITE DWARF pos_1: RA=7H 53M 02.58S +/- 1", pos_2: DEC=-67D 46'58.6" +/- 1", pos_3: PLATE-ID=01YR equinox: 2000 pm_or_par: Y pos_epoch_bj: J pos_epoch_yr: 1978.10 ra_pm_val: 0.095200 ra_pm_unct: 0.000867 dec_pm_val: -1.4580 dec_pm_unct: 0.0130 plate_req: N fluxnum_1: 1 fluxval_1: V=14.09 +/- 0.20 ! targnum: 2 name_1: LHS1126 descr_1: WHITE DWARF pos_1: RA=00H 41M 26.59S +/- 1", pos_2: DEC= -22D 20'55.6" +/- 1", pos_3: PLATE-ID=024J equinox: ^ pm_or_par: ^ pos_epoch_bj: J pos_epoch_yr: 1980.60 ra_pm_val: -0.028533 ra_pm_unct: 0.000333 dec_pm_val: -0.3720 dec_pm_unct: 0.0050 plate_req: N fluxnum_1: 1 fluxval_1: V=14.53 +/- 0.20 ! targnum: 3 name_1: LP658-2 descr_1: WHITE DWARF pos_1: RA=05H 55M 08.94S +/- 1", pos_2: DEC= -4D 09'29.9" +/- 1", pos_3: PLATE-ID=02NY equinox: ^ pm_or_par: ^ pos_epoch_bj: J pos_epoch_yr: 1984.00 ra_pm_val: 0.036200 ra_pm_unct: 0.000267 dec_pm_val: -2.3150 dec_pm_unct: 0.0040 plate_req: N fluxnum_1: 1 fluxval_1: V=14.52 +/- 0.20 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 targname: BPM4729 config: FOS/BL opmode: ACQ/BINARY aperture: 4.3 sp_element: MIRROR num_exp: 1 time_per_exp: 11S priority: 3 param_1: BRIGHT = 720000 req_1: CYCLE 0 / 1-4; req_2: SEQ 1-4 NO GAP; req_3: ONBOARD ACQ FOR 2-4 ! linenum: 2.000 targname: ^ config: ^ opmode: ACCUM aperture: ^ sp_element: G400H wavelength: 3250-4831 num_exp: ^ time_per_exp: 300S priority: ^ ! linenum: 3.000 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: G270H wavelength: 2230-3309 num_exp: ^ time_per_exp: 1200S priority: ^ ! linenum: 4.000 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: G190H wavelength: 1600-2300 num_exp: ^ time_per_exp: 1500S priority: ^ param_1: STEP-TIME=0.05 comment_1: REJLIM=10 ! linenum: 5.000 targname: LHS1126 config: FOS/BL opmode: ACQ/BINARY aperture: 4.3 sp_element: MIRROR num_exp: 1 time_per_exp: 20.0S priority: 3 param_1: BRIGHT = 720000 req_1: CYCLE 0 / 5-8; req_2: SEQ 5-8 NO GAP; req_3: ONBOARD ACQ FOR 6-8 ! linenum: 6.000 targname: ^ config: ^ opmode: ACCUM aperture: ^ sp_element: G400H wavelength: 3250-4831 num_exp: ^ time_per_exp: 300S priority: ^ ! linenum: 7.000 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: G270H wavelength: 2230-3309 num_exp: ^ time_per_exp: 1200S priority: ^ ! linenum: 8.000 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: G190H wavelength: 1600-2300 num_exp: ^ time_per_exp: 3000S priority: ^ param_1: STEP-TIME=0.05 comment_1: REJLIM=5 ! linenum: 9.000 targname: LP658-2 config: FOS/BL opmode: ACQ/BINARY aperture: 4.3 sp_element: MIRROR num_exp: 1 time_per_exp: 22.0S priority: 3 param_1: BRIGHT = 720000 req_1: CYCLE 0 / 9-12; req_2: SEQ 9-12 NO GAP; req_3: ONBOARD ACQ FOR 10-12 ! linenum: 10.000 targname: LP658-2 config: FOS/BL opmode: ACCUM aperture: 4.3 sp_element: G400H wavelength: 3250-4831 num_exp: 1 time_per_exp: 300S priority: 3 ! linenum: 11.000 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: G270H wavelength: 2230-3309 num_exp: ^ time_per_exp: 1200S priority: ^ ! linenum: 12.000 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: G190H wavelength: 1600-2300 num_exp: ^ time_per_exp: 4500S priority: ^ param_1: STEP-TIME=0.05 comment_1: REJLIM=5 ! ! end of exposure logsheet ! No scan data records found