! File: 1200C.PROP ! Database: PEPDB ! Date: 16-FEB-1994:05:44:01 coverpage: title_1: SEARCH FOR INTERSTELLAR MOLECULES IN SPECTRA OF THREE B STARS title_2: -- CYCLES 1,2,3 sci_cat: INTERSTELLAR MEDIUM proposal_for: GTO/HRS cont_id: 1200 pi_fname: ANDREW pi_mi: M. pi_lname: SMITH pi_inst: NASA, GODDARD SPACE FLIGHT CENTER pi_country: USA pi_phone: (301)286-3900 keywords_1: MOLECULAR CLOUD, GAS hours_pri: 20.79 num_pri: 3 pi_position: STAFF ASTRONOMER ! end of coverpage abstract: line_1: The scientfic goal of this program is to check current theoretical line_2: understanding of gas phase chemistry in diffuse interstellar clouds and to line_3: modify this understanding if necessary. A further goal is to look for evidence line_4: of molecule formation other than H2 on interstellar grain surfaces. Signatures line_5: of many of the most important molecular species are found in the vaccuum and line_6: middle ultraviolet accessible to the HRS. It is proposed to observe HD32656 line_7: throughout the HRS wavelength range and HD29647 at a few caroussel settings in line_8: the 2.4x104 resolving power mode. These stars are associated with the Taurus line_9: Cloud complex. It is also proposed to observe omicron persei in the 105 line_10: revolving power mode and combine the new results with those found by line_11: observations with the "Copernicus" satellite. ! ! 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: EBBETS fname: DENNIS mi: C. inst: BALL AEROSPACE CORPORATION country: USA ! lname: BRANDT fname: JOHN mi: C. inst: NASA, GODDARD SPACE FLIGHT CENTER country: USA ! lname: SMITH fname: ANDREW mi: M. inst: NASA, GODDARD SPACE FLIGHT CENTER country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: The HRS will be used. Since the targts are comparatively bright a standard line_2: target acquisition mode can be employed. for oPer, 23 carousell settings in line_3: the lambda/delta lambda = 10dex5 mode, 3 settings in the lambda/delta lambda = line_4: 2.4x10dex4 mode and 2 settings in the lamda/delta lambda = 2x10dex3 mode are line_5: planned. For HD32656, most of the accessible UV spectrum will be observed in line_6: the lambda/delta lambda = 2.4x10dex4 mode, and 3 caroussel settings are desired line_7: in the lambda/delta lambda = 2.10dex4 mode. For HD29647 3 caroussel settings line_8: in the lambda/delta lambda = 2.4x10dex4 mode are planned. The small aperture line_9: is appropriate. Each time the HRS is used for obtaining data in a contiguous line_10: set of observations in this program an internal wavelength calibration is line_11: desired. This calibration is the type wherein the existing wavelength line_12: calibration is modified by determining off-sets. An entire recalibration of line_13: the wavelength-pixel relation is not required. An attempt will be made to line_14: minimize fixed pattern noise, particularly when using the D1 detector, by line_15: subdividing an exposure into 4 parts corresponding to carrousel increments of line_16: about 5.2 pixels. line_18: Star o Per HD32656 HD29647 line_19: exposures exposures exposures line_21: Cycle line_22: 0 1, 2, 11-21, 24 line_23: 1 3 - 10, 22,42 - 48, 59 - 60, 30-42 ! question: 3 section: 2 line_1: line_4: Star o Per HD32656 HD29647 line_5: exposures exposures exposures line_6: Cycle line_7: 26, 27 68 - 72, 78 - 79 line_8: 82, 85 - 92 94, 97-98 line_9: 2 23, 25, 10, 49 - 58, 61, 95, 96 line_10: 3 62 - 67, 73 - 77 line_11: 80, 81, 83, 84 line_14: COMMENT CONTINUED FROM TF TARGET NUMBER 1: line_16: 21 F(2717)=2.7+/-0.3E-10, 22 F(2803)=2.5+/-0.3E-10, 23 F(1768)=6.8+/-2.0E-10, line_17: 24 F(2889)=2.5+/-0.3E-10, 25 F(1412)=8.6+/-2.0E-10, 26 F(1460)=9.2+/-2.0E-10 line_19: comment continued from TF target number 2: wavelength scale off-sets. line_21: comment continued from TF target number 3: Detector 1 are biased to low noise line_22: side of detector. This is done to minimize effects of fixed pattern noise. ! question: 3 section: 3 line_1: EXPOSURE LOG COMMENT CONTINUATIONS-- line_3: 2. WAVELENGTH SCALE OFF-SETS. line_5: 3. DETECTOR 1 ARE BIASED TO LOW NOISE SIDE OF DETECTOR. THIS IS DONE TO line_6: MINIMIZE EFFECTS OF FIXED PATTERN NOISE. line_8: 29. WAVELENGTH SCALE OFF-SETS. line_10: 30. IN CASE OF DETECTOR 1 ARE BIASED TO LOW NOISE SIDE OF DETECTOR. THIS IS line_11: DONE TO MINIMIZE FIXED PATTERN NOISE. line_13: 94. WAVELENGTH SCALE OFF-SETS line_15: 95. DETECTOR 1 ARE BIASED TO LOW NOISE SIDE OF THE DETECTOR. THIS WILL line_16: MINIMIZE EFFECTS OF FIXED PATTERN NOISE. ! question: 4 section: 1 line_1: The spectra of comparatively few interstellar molecules exist at optical line_2: wavelengths whereas many are found in the HRS sensitivity range. "Copernicus" line_3: demonstrated the usefulness of this wavelength regime to interstellar studies line_4: but was not sensitive enough to view moderately reddened stars. I.U.E. has line_5: been successful in observations of faint stars, but does not possess adequate line_6: spectral resolutions. ! question: 5 section: 1 line_1: No real-time observations are required. ! question: 6 section: 1 line_1: A wavelength calibration is desired for each set of contiguous observations in line_2: order to relate line velocities measured with ST/HRS to ground based line_3: measurements. Accuracies on the order of 1.5 km sdex-1 and 4.5 km sdex-1 for line_4: the high and medium resolving power modes are appropriate goals. Determining line_5: cloud component radial velocities relative to measured background star line_6: velocities is unreliable because the stellar lines are broadened by rotation line_7: and blending. Flat field corrections will be important, but it is not clear line_8: how they will be accomplished. Breaking each exposure into four parts and line_9: shifting the spectrum on the detector photocathodes 5.2 pixels by rotating the line_10: carrousel will tend to smooth out pixel to pixel variations. ! question: 7 section: 1 line_1: These will be designed to determine column densities of both molecular and line_2: atomic species with a view toward finding abundances. Both curve-of-growth and line_3: profile fitting techniques will be employed. With these results simple line_4: analyses involving small sets of reactions can provide preliminary results. line_5: Ultimately however, solutions must be found which will satisfy simultaneously a line_6: large number of reactions. The success of this analysis will depend on the line_7: quality and quantity of our measurements as well as on the availability of line_8: reasonably accurate rate constants. ! question: 10 section: 1 line_1: Both computer hardware and software will be available at NASA/GSFC for data line_2: analysis. ! question: 12 section: 1 line_1: It is unclear at the present time due to a paucity of data that HD32656 is line_2: completely suitable from the standpoint of showing a large v sin i parameter. line_3: We list other stars associated with the Taurus Cloud with th understanding tht line_4: one of them will be selected to be substituted for HD32656 if necessary. These line_5: stars are HD29259, HD29309, and HD30675. The HRS science team will contribute line_6: 4.o h toward obtaining the complete spectral scan of HD32656 or its line_7: replacement. ! question: 13 section: 1 line_1: This program constitutes a search for molecules in diffuse interstellar clouds. line_2: The High Resolution Spectrograph will be used to observe the entire spectrum line_3: of HD32656 from 1150A to 2900A at lambda/delta lambda = 2x10dex4, three line_4: caroussel settings at lambda/delta lambda = 2x10dex4 for HD29647, and 23 line_5: caroussel settings at lambda/delta lambda = 10dex5 for oPer. The scientific line_6: goal is to study molecule formation mechanisms in diffuse interstellar clouds. ! !end of general form text general_form_address: lname: SMITH fname: ANDREW mi: M. category: PI inst: GODDARD SPACE FLIGHT CENTER city: GREENBELT state: MD zip: 20771 country: USA phone: 301-344-8648 telex: 89675 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: HD23180 name_2: OMICRON-PER descr_1: B1 III STAR SHOWING descr_2: INTERSTELLAR descr_3: MOLECULAR SPECTRUM pos_1: RA=3H44M19.1S+/-0.1S, pos_2: DEC=+32D17'18"+/-1.0" equinox: 2000 pm_or_par: Y pos_epoch_bj: J pos_epoch_yr: 2000.00 ra_pm_val: 0.000533 ra_pm_unct: 0.000133 dec_pm_val: -0.0090 dec_pm_unct: 0.0020 an_prlx_val: 0.0230 rv_or_z: V=+18.5 comment_1: 11 F(1335)=8.7+/-2.0E-10 comment_2: 12 F(1341)=8.7+/-2.0E-10 comment_3: 13 F(1657)=8.2+/-2.0E-10 comment_4: 14 F(1914)=4.0+/-0.6E-10 comment_5: 15 F(2190)=2.7+/-0.3E-10 comment_6: 16 F(2242)=2.4+/-0.3E-10 comment_7: 17 F(2266)=2.8+/-0.3E-10 comment_8: 18 F(2313)=2.8+/-0.3E-10 comment_9: 19 F(2344)=2.9+/-0.3E-10 comment_10: 20 F(2576)=3.2+/-0.3E-10 fluxnum_1: 1 fluxval_1: V=3.83+/-0.02,TYPE=B1III,E(B-V)=0.31 fluxnum_2: 2 fluxval_2: F(1216)=1.0+/-0.3E-10 fluxnum_3: 3 fluxval_3: F(1222)=2.0+/-0.5E-10 fluxnum_4: 4 fluxval_4: F(1227)=2.5+/-0.6E-10 fluxnum_5: 5 fluxval_5: F(1241)=7.9+/-2.0E-10 fluxnum_6: 6 fluxval_6: F(1257)=7.9+/-2.0E-10 fluxnum_7: 7 fluxval_7: F(1273)=7.9+/-2.0E-10 fluxnum_8: 8 fluxval_8: F(1290)=9.0+/-2.0E-10 fluxnum_9: 9 fluxval_9: F(1302)=7.0+/-2.0E-10 fluxnum_10: 10 fluxval_10: F(1310)=1.0+/-0.2E-9 ! targnum: 2 name_1: HD32656 descr_1: B5.5 V STAR IN descr_2: DIRECTION OF TAURUS descr_3: CLOUD pos_1: RA=5H2M47.495S+/-0.012S, pos_2: DEC=+26D21'47.07"+/-0.18" equinox: 1950 pm_or_par: Y pos_epoch_bj: B pos_epoch_yr: 1950.00 ra_pm_val: 0.000333 ra_pm_unct: 0.000133 dec_pm_val: -0.0190 dec_pm_unct: 0.0030 rv_or_z: V=+16.9 comment_1: 11 F(2220)=11.6+/-2.5E-12 comment_2: 12 F(2300)=10.4+/-2.0E-12 comment_3: 13 F(2370)=9.5+/-2.0E-12 comment_4: 14 F(2520)=10.4+/-2.0E-12 comment_5: 15 F(2670)=11.4+/-2.0E-12 comment_6: 16 F(2770)=10.8+/-2.0E-12 comment_7: 17 F(2860)=8.7+/-2.0E-12 comment_8: 18 F(2913)=9.7+/-2.0E-12 fluxnum_1: 1 fluxval_1: V=6.5+/-0.1,TYPE=B5.5 V, E(B-V)=0.5 fluxnum_2: 2 fluxval_2: F(1565)=33.8+/-15.0E-12 fluxnum_3: 3 fluxval_3: F(1600)=32.0+/-15.0E-12 fluxnum_4: 4 fluxval_4: F(1650)=30.0+/-15.0E-12 fluxnum_5: 5 fluxval_5: F(1730)=26.2+/-12.0E-12 fluxnum_6: 6 fluxval_6: F(1780)=21.0+/-7.0E-12 fluxnum_7: 7 fluxval_7: F(1870)=20.0+/-7.0E-12 fluxnum_8: 8 fluxval_8: F(1950)=16.0+/-5.0E-12 fluxnum_9: 9 fluxval_9: F(2000)=15.0+/-5.0E-12 fluxnum_10: 10 fluxval_10: F(2100)=13.4+/-3.0E-12 ! targnum: 3 name_1: HD62542 name_2: SAO218917 descr_1: B5 V STAR IN THE descr_2: GUM NEBULA pos_1: RA=7H 40M 58.073S+/-0.05", pos_2: DEC=-42D 06' 36.16"+/-0.7" equinox: 1950 pm_or_par: Y pos_epoch_bj: B pos_epoch_yr: 1950.00 ra_pm_val: -0.001000 ra_pm_unct: 0.000080 dec_pm_val: 0.0170 dec_pm_unct: 0.0012 fluxnum_1: 1 fluxval_1: V=8.04, TYPE=B5V, B-V=0.17 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 targname: HD23180 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-A2 num_exp: 1 time_per_exp: 57.8S s_to_n: 10 fluxnum_1: 1 priority: 1 param_1: SEARCH-SIZE=5, param_2: BRIGHT=60000, param_3: FAINT=14900, param_4: LOCATE=NO, param_5: MAP=END-POINT req_1: ONBOARD ACQ FOR 1.1; req_2: CYCLE 1/1-12.2 comment_1: STEP-TIME=0.2SEC ! linenum: 1.100 targname: HD23180 config: HRS opmode: ACQ/PEAKUP aperture: 2.0 sp_element: MIRROR-A2 num_exp: 1 time_per_exp: 73.6S fluxnum_1: 1 priority: 1 req_1: ONBOARD ACQ FOR 1.2 comment_1: STEP-TIME=1.6S ! linenum: 1.200 targname: HD23180 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-A2 num_exp: 1 time_per_exp: 53.0S s_to_n: 10 fluxnum_1: 1 priority: 1 param_1: SEARCH-SIZE=1, param_2: MAP=END-POINT, param_3: FAINT=0, param_4: LOCATE=NO req_1: ONBOARD ACQ FOR 10.1-12.2 comment_1: TAKE MAP AFTER CENTERING comment_2: 200 MSEC INTEGRATIONS ! linenum: 10.100 targname: HD23180 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G160M wavelength: 1419.26 num_exp: 2 time_per_exp: 3.7M s_to_n: 284 priority: 1 param_1: METER=NO, param_2: STEP-PATT=5, param_3: FP-SPLIT=STD req_1: CYCLE 1 comment_1: ONE OF 3 CH2 EXPOSURES ! linenum: 10.200 targname: HD23180 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G160M wavelength: 1411.16 num_exp: 2 time_per_exp: 3.7M s_to_n: 284 priority: 1 param_1: METER=NO, param_2: STEP-PATT=5, param_3: FP-SPLIT=STD req_1: CYCLE 1 comment_1: ONE OF 3 CH2 EXPOSURES ! linenum: 10.300 targname: HD23180 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G160M wavelength: 1403.76 num_exp: 2 time_per_exp: 3.7M s_to_n: 284 priority: 1 param_1: METER=NO, param_2: STEP-PATT=5, param_3: FP-SPLIT=STD req_1: CYCLE 1 comment_1: ONE OF 3 CH2 EXPOSURES ! linenum: 11.000 targname: HD23180 config: HRS opmode: ACCUM aperture: 2.0 sp_element: ECH-B25 wavelength: 2253.363 num_exp: 1 time_per_exp: 653S s_to_n: 256 priority: 2 param_1: METER=NO, param_2: STEP-PATT=9, param_3: FP-SPLIT=STD comment_1: FLUX REF. IS 17 ! linenum: 11.100 targname: HD23180 config: HRS opmode: ACCUM aperture: 2.0 sp_element: ECH-B25 wavelength: 2253.780 num_exp: 1 time_per_exp: 653S s_to_n: 256 priority: 2 param_1: METER=NO, param_2: STEP-PATT=9, param_3: FP-SPLIT=STD comment_1: FLUX REF. IS 17 ! linenum: 11.200 targname: HD23180 config: HRS opmode: ACCUM aperture: 2.0 sp_element: ECH-B25 wavelength: 2254.198 num_exp: 1 time_per_exp: 653S s_to_n: 256 priority: 2 param_1: METER=NO, param_2: STEP-PATT=9, param_3: FP-SPLIT=STD comment_1: FLUX REF. IS 17 ! linenum: 11.300 targname: HD23180 config: HRS opmode: ACCUM aperture: 2.0 sp_element: ECH-B25 wavelength: 2254.615 num_exp: 1 time_per_exp: 653S s_to_n: 256 priority: 2 param_1: METER=NO, param_2: STEP-PATT=9, param_3: FP-SPLIT=STD comment_1: FLUX REF. IS 17 ! linenum: 11.400 targname: HD23180 config: HRS opmode: ACCUM aperture: 2.0 sp_element: ECH-B25 wavelength: 2255.033 num_exp: 1 time_per_exp: 653S s_to_n: 256 priority: 2 param_1: METER=NO, param_2: STEP-PATT=9, param_3: FP-SPLIT=STD comment_1: FLUX REF. IS 17 ! linenum: 12.000 targname: HD23180 config: HRS opmode: ACCUM aperture: 2.0 sp_element: ECH-B22 wavelength: 2573.291 num_exp: 1 time_per_exp: 327S s_to_n: 140 priority: 1 param_1: METER=NO, param_2: STEP-PATT=7, param_3: FP-SPLIT=STD comment_1: FLUX REF. IS 20 ! linenum: 12.100 targname: HD23180 config: HRS opmode: ACCUM aperture: 2.0 sp_element: ECH-B22 wavelength: 2573.772 num_exp: 1 time_per_exp: 327S s_to_n: 140 priority: 1 param_1: METER=NO, param_2: STEP-PATT=7, param_3: FP-SPLIT=STD comment_1: FLUX REF. IS 20 ! linenum: 12.200 targname: HD23180 config: HRS opmode: ACCUM aperture: 2.0 sp_element: ECH-B22 wavelength: 2574.254 num_exp: 1 time_per_exp: 327S s_to_n: 140 priority: 1 param_1: METER=NO, param_2: STEP-PATT=7, param_3: FP-SPLIT=STD comment_1: FLUX REF. IS 20 ! ! end of exposure logsheet ! No scan data records found