! File: 3943C.PROP ! Database: PEPDB ! Date: 20-FEB-1994:01:02:04 coverpage: title_1: LOCAL INTERSTELLAR MEDIUM AND D/H RATIO -- CYCLE 2 sci_cat: INTERSTELLAR MEDIUM sci_subcat: ABSORPTION LINES proposal_for: AUG/HRS cont_id: 1175 pi_fname: JEFFREY pi_mi: L. pi_lname: LINSKY pi_inst: COLORADO, UNIVERSITY OF pi_country: USA pi_phone: (303)492-7838 keywords_1: HYDROGEN COLUMN DENSITY, DEUTERIUM COLUMN DENSITY, keywords_2: DEUTERIUM ABUNDANCE hours_pri: 7.60 num_pri: 3 time_crit: X pi_position: ASTROPHYSICST ! end of coverpage abstract: line_1: We will observe with 20,000 spectral resolution the stellar line_2: Lyman alpha emission line and interstellar hydrogen and line_3: deuterium absorption towards local late-type stars to line_4: derive the H and D column densities and D/H ratios along line_5: different lines of sight. High resolution (90,000) spectra of the line_6: MgII and FeII lines will help determine the interstellar line_7: line broadening and whether material along each line of line_8: sight has more than one velocity component. This is critical line_9: for accurate measurements of D/H, because both the D and H line_10: lines are on or near the flat part of the curve of growth. line_11: Previous IUE and Copernicus observations, which had low line_12: signal/noise and inadequate spectral resolution, provided line_13: very crude D/H values and suggested that the D/H ratio may line_14: vary within a few parsecs of the Sun. We will measure D/H line_15: with at least one order of magnitude improved precision and line_16: determine whether the proposed local variations are real. The line_17: local value(s) of D/H may be extrapolated to zero metal line_18: abundance to estimate the primordial value, which is line_19: valuable for constraining cosmological models. ! ! end of abstract general_form_proposers: lname: JURA fname: MICHAEL inst: UC, LOS ANGELES country: USA ! lname: SAVAGE fname: BLAIR mi: D. inst: WISCONSIN, UNIVERSITY OF country: USA ! lname: LINSKY fname: JEFFREY mi: L. inst: COLORADO, UNIVERSITY OF country: USA ! lname: HEAP fname: SARA mi: R. inst: NASA, GODDARD SPACE FLIGHT CENTER country: USA ! lname: LANDSMAN fname: WAYNE inst: NASA, GODDARD SPACE FLIGHT CENTER country: USA ! lname: SMITH fname: ANDREW mi: M. inst: NASA, GODDARD SPACE FLIGHT CENTER country: USA ! lname: BROWN fname: ALEXANDER inst: COLORADO, UNIVERSITY OF country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: We intend to observe 5 stars at 1.0E+5 resolution with the HRS in 3 line_2: grating settings. Two stars (Capella and HR 1099) are spectroscopic line_3: binary systems that will be observed at orbital quadrature in order line_4: to shift the interstellar absorption feature relative to the stellar line_5: emission line. For most observations a signal-to-noise of 100 is line_6: desired. This requirement requires special care for the Lyman alpha line_7: observations because of fixed pattern noise in the D1 detector. Our solution to line_8: this problem involves (1) placing the Lyman alpha feature on the right hand line_9: half of the digicon (diodes 300-500) where the fixed pattern noise is lower, line_10: and (2) obtaining many individual spectra with small shifts of the grating so line_11: that the spectrum will be placed on different portions of the digicon. line_12: Acceptable observing windows for each star are listed on the target sheet. line_13: Capella was observed in Cycle 0. ! question: 4 section: 1 line_1: The required spectral lines cannot be observed from the ground. ! question: 5 section: 1 line_1: Two targets (Capella and HR 1099) are spectroscopic binaries and must be line_2: observed each near one conjunction (PHI=0.0 or 0.5) and one quadrature line_3: (PHI=0.75 for HR 1099 and PHI=0.25 for Capella). Ephemeris for HR1099 is line_4: PHI=0.00 at JD (helio) = 2,442,766.069 + 2d.83782E. Ephemeris for Capella is line_5: PHI=0.00 at JD (helio) = 2,442,039.4 + 104d.0204E. Also there are preferred line_6: times of the year for each target so as to center the geocoronal emission in line_7: the Lyman alpha interstellar absorption core. These observing windows line_8: are given on the Target List. ! question: 7 section: 1 line_1: We have developed data analysis software to separate the interstellar line_2: absorption and stellar emission line features so as to determine column line_3: densities for interstellar H and D. ! question: 8 section: 1 line_1: Several stars are targets for our other GTO programs. In these cases contiguous line_2: observing of the same star for all programs will mean only one acquisition per line_3: target with a saving of HST observing time. ! question: 10 section: 1 line_1: Data analysis programs and postdoctoral research associates supported by the line_2: HRS GTO program. ! question: 12 section: 1 line_1: Overhead estimates from RPSS ! question: 13 section: 1 line_1: We will observe the Lyman alpha line at 20,000 spectral resolution line_2: towards 3 late-type local stars. The purpose is to derive the line_3: hydrogen and deuterium column densities and D/H ratios along lines line_4: of sight towards nearby stars. High resolution (90,000) spectra of line_5: MgII and FeII lines will be obtained to help determine the line_6: broadening parameter and whether material along these lines of line_7: sight has more than one velocity component. ! !end of general form text general_form_address: lname: LINSKY fname: JEFFREY mi: L. category: PI inst: JILA, UNIVERSITY OF COLORADO addr_1: CAMPUS BOX 440 city: BOULDER state: CO zip: 80309 country: USA phone: (303) 492-7838 telex: 755842 JILA ! ! end of general_form_address records fixed_targets: targnum: 2 name_1: HD128620 name_2: ALPHA-CEN-A descr_1: A,137 pos_1: RA=14H 38M 57.5S +/- 0.01S, pos_2: DEC=-60D 47' 41" +/- 0.1" equinox: 1990.5 pm_or_par: Y pos_epoch_bj: B pos_epoch_yr: 1990.50 ra_pm_val: -0.240533 ra_pm_unct: 0.000067 dec_pm_val: 0.7120 dec_pm_unct: 0.0010 an_prlx_val: 0.7500 rv_or_z: V=-25 comment_1: CORRECTION FOR ORBITAL MOTION WILL comment_2: BE SPECIFIED WHEN TIME OF comment_3: OBSERVATION IS KNOWN. fluxnum_1: 1 fluxval_1: V=-0.01 ! targnum: 3 name_1: HD128621 name_2: ALPHA-CEN-B descr_1: A,139 pos_1: RA=14H 38M 56.0S +/- 0.01S, pos_2: DEC=-60D 47' 57" +/- 0.1" equinox: 1990.5 pm_or_par: Y pos_epoch_bj: B pos_epoch_yr: 1990.50 ra_pm_val: -0.240533 ra_pm_unct: 0.000067 dec_pm_val: 0.7120 dec_pm_unct: 0.0010 an_prlx_val: 0.7500 rv_or_z: ^ comment_1: CORRECTION FOR ORBITAL MOTION WILL comment_2: BE SPECIFIED WHEN TIME OF comment_3: OBSERVATION IS KNOWN. fluxnum_1: 1 fluxval_1: V=1.33 ! targnum: 6 name_1: HD34029 name_2: ALPHA-AUR descr_1: A,134,138 pos_1: RA=05H12M59.466S+/-0.01S, pos_2: DEC=+45D56'58.04"+/-0.1" equinox: 1950 pm_or_par: Y pos_epoch_bj: B pos_epoch_yr: 1950.00 ra_pm_val: 0.005333 ra_pm_unct: 0.000067 dec_pm_val: -0.4230 dec_pm_unct: 0.0010 an_prlx_val: 0.0800 rv_or_z: V=+30 fluxnum_1: 1 fluxval_1: V=0.08 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 sequence_1: DEFINE sequence_2: LISM1 targname: # config: HRS opmode: ACCUM aperture: 0.25 sp_element: G160M wavelength: 1223.70 num_exp: # time_per_exp: 108.8S s_to_n: 100 priority: # param_1: STEP-PATT=5, param_2: FP-SPLIT=STD ! linenum: 5.000 sequence_1: DEFINE sequence_2: LISM2 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: ECH-B20 wavelength: 2800 num_exp: ^ time_per_exp: 54.4S s_to_n: ^ priority: ^ param_1: STEP-PATT=7 ! linenum: 6.000 sequence_1: DEFINE sequence_2: LISM3 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: ECH-B22 wavelength: 2600 num_exp: ^ time_per_exp: 54.4S s_to_n: ^ priority: ^ param_1: STEP-PATT=7 ! linenum: 11.000 targname: HD128620 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-A2 num_exp: 1 time_per_exp: 1.8S priority: 2 param_1: SEARCH-SIZE=3, param_2: BRIGHT=32000, param_3: FAINT=1000, req_1: ONBOARD ACQ FOR 12; req_2: ZERO-PHASE JD2446795.5 +/- 0.001D; req_3: PERIOD 365.25D +/- 0.01D; req_4: PHASE 0.64 +/- 0.33; req_5: CYCLE 2/ 11-19; req_6: GROUP 11-19 NO GAP; comment_1: OBSERVE APR 14 - DEC 27, comment_2: EXPECT 6000 CTS/200 MSEC ON HD128620, comment_3: 860 CTS/200 MSEC ON HD128621. ! linenum: 12.000 targname: HD128620 config: HRS opmode: ACQ/PEAKUP aperture: 2.0 sp_element: MIRROR-A2 num_exp: 1 time_per_exp: 163.2S fluxnum_1: 1 priority: 2 req_1: ONBOARD ACQ FOR 15-19 comment_1: STEP-TIME=1.6 SEC comment_2: CENTER IN LSA AFTER NEW DEFCAL ! linenum: 15.000 targname: WAVE config: ^ opmode: ACCUM aperture: SC2 sp_element: G160M wavelength: 1223.70 num_exp: 1 time_per_exp: 64S priority: ^ param_1: STEP-PATT=3 req_1: CALIB FOR 16 NO SLEW; req_2: SEQ 15-16 NO GAP ! linenum: 16.000 sequence_1: USE sequence_2: LISM1 targname: HD128620 num_exp: 3 time_per_exp: X11 priority: ^ ! linenum: 17.000 targname: WAVE config: HRS opmode: ACCUM aperture: SC2 sp_element: ECH-B20 wavelength: 2800 num_exp: 1 time_per_exp: 32S priority: ^ param_1: STEP-PATT=3 req_1: CALIB FOR 17.5 NO SLEW; req_2: SEQ 17.0-17.5 NO GAP ! linenum: 17.500 sequence_1: USE sequence_2: LISM2 targname: HD128620 num_exp: 1 time_per_exp: X14 priority: ^ ! linenum: 18.000 targname: WAVE config: HRS opmode: ACCUM aperture: SC2 sp_element: ECH-B22 wavelength: 2600 num_exp: 1 time_per_exp: 32S priority: 2 param_1: STEP-PATT=3 req_1: CALIB FOR 19 NO SLEW; req_2: SEQ 18-19 NO GAP ! linenum: 19.000 sequence_1: USE sequence_2: LISM3 targname: HD128620 num_exp: 1 time_per_exp: X12 priority: 2 ! linenum: 20.000 targname: HD128621 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-A2 num_exp: 1 time_per_exp: 1.8S priority: 2 param_1: SEARCH-SIZE=3, param_2: BRIGHT=3000, param_3: FAINT=400, req_1: ONBOARD ACQ FOR 21.0; req_2: PHASE 0.64 +/- 0.33 OF REF 11.0; req_3: CYCLE 2/ 20-26; req_4: GROUP 20-26 NO GAP; comment_1: OBSERVE APR 14 - DEC 27. comment_2: EXPECT 860 CTS/200 MSEC ON HD128621, comment_3: 6000 CTS/200 MSEC ON HD128620. ! linenum: 21.000 targname: HD128621 config: HRS opmode: ACQ/PEAKUP aperture: 2.0 sp_element: MIRROR-A2 num_exp: 1 time_per_exp: 163.2S fluxnum_1: 1 priority: 2 req_1: ONBOARD ACQ FOR 22.0-26.0 comment_1: STEP-TIME=1.6 SEC comment_2: CENTER IN LSA AFTER NEW DEFCAL ! linenum: 22.000 targname: WAVE config: HRS opmode: ACCUM aperture: SC2 sp_element: G160M wavelength: 1223.70 num_exp: 1 time_per_exp: 64S priority: 2 param_1: STEP-PATT=3 req_1: CALIB FOR 22.5 NO SLEW; req_2: SEQ 22.0-22.5 NO GAP comment_1: NO CARROUSEL MOTION comment_2: BETWEEN 22.0 AND 22.5 ! linenum: 22.500 sequence_1: USE sequence_2: LISM1 targname: HD128621 num_exp: 3 time_per_exp: X11 priority: 2 ! linenum: 23.000 targname: WAVE config: HRS opmode: ACCUM aperture: SC2 sp_element: ECH-B20 wavelength: 2800 num_exp: 1 time_per_exp: 32S priority: 2 param_1: STEP-PATT=3 req_1: CALIB FOR 24 NO SLEW; req_2: SEQ 23-24 NO GAP ! linenum: 24.000 sequence_1: USE sequence_2: LISM2 targname: HD128621 num_exp: 1 time_per_exp: X20 priority: 2 ! linenum: 25.000 targname: WAVE config: HRS opmode: ACCUM aperture: SC2 sp_element: ECH-B22 wavelength: 2600 num_exp: 1 time_per_exp: 32S priority: 2 param_1: STEP-PATT=3 req_1: CALIB FOR 26 NO SLEW; req_2: SEQ 25-26 NO GAP ! linenum: 26.000 sequence_1: USE sequence_2: LISM3 targname: HD128621 num_exp: 1 time_per_exp: X18 priority: 2 ! linenum: 56.010 targname: HD34029 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-A2 num_exp: 1 time_per_exp: 1.8S priority: 2 param_1: SEARCH-SIZE=3, param_2: BRIGHT=RETURN req_1: ONBOARD ACQ FOR 56.012; req_2: ZERO-PHASE JD 2442093.347 +/- 0.1D; req_3: PERIOD 104.0204D+/- 0.0001D; req_4: PHASE 0.75 +/- 0.03; req_5: CYCLE 2/56.010-60; req_6: GROUP 56.010-60 NO GAP;SEQ 56.01-56.012; comment_1: STEP TIME = 0.2 SEC comment_2: FAINT=1400 comment_3: SCHEDULE NEAR 1992 NOVEMBER 6 ! linenum: 56.012 targname: HD34029 config: HRS opmode: ACQ/PEAKUP aperture: 2.0 sp_element: MIRROR-A2 num_exp: 1 time_per_exp: 163.2S fluxnum_1: 1 priority: 2 req_1: ONBOARD ACQ FOR 57.0-60.0 comment_1: STEP-TIME=1.6 SEC comment_2: CENTER IN LSA AFTER NEW DEFCAL ! linenum: 57.000 targname: WAVE config: HRS opmode: ACCUM aperture: SC2 sp_element: G160M wavelength: 1223.70 num_exp: 1 time_per_exp: 64S priority: 2 param_1: STEP-PATT=3 req_1: CALIB FOR 58 NO SLEW; req_2: SEQ 57-58 NO GAP ! linenum: 58.000 sequence_1: USE sequence_2: LISM1 targname: HD34029 num_exp: 2 time_per_exp: X9 priority: ^ comment_1: SCHEDULE NEAR 1992 NOVEMBER 6 ! linenum: 60.000 sequence_1: USE sequence_2: LISM2 targname: HD34029 time_per_exp: X13 priority: ^ comment_1: SCHEDULE NEAR 1992 NOVEMBER 6 ! ! end of exposure logsheet ! No scan data records found