! File: 4126C.PROP ! Database: PEPDB ! Date: 20-FEB-1994:09:47:26 coverpage: title_1: SEARCH FOR EXTENDED GALACTIC HALOS (FOS 23): title_2: FUTURE-CYCLE CONTINUATION sci_cat: QUASARS & AGN proposal_for: GTO/FOS cont_id: 1043 pi_fname: RALPH pi_lname: BOHLIN pi_inst: SPACE TELESCOPE SCIENCE INSTITUTE pi_country: USA pi_phone: (410) 338-4804 keywords_1: GALACTIC HALOS, QUASAR hours_pri: 10.90 num_pri: 3 fos: Y ! end of coverpage abstract: line_1: Use QSOs projected close to nearby galaxies to search for halos sufficiently line_2: extended to explain the observed statistics of QSO absorption line spectra. line_3: Different candidate galaxies have been chosen, including some known to have line_4: extended 21 cm halos, galaxies in and out of clusters, etc. Galaxies are line_5: chosen with z>0.001 where possible, so that local Lyman alpha absorption can be line_6: resolved from a galaxian column density of 2E19 of HI in our R=1200 mode. This line_7: is a UV specific problem that requires ST collecting area. A positive line_8: detection will produce a point on the rotation curve far into the galaxy halo, line_9: as well as crude information on the physical conditions of the halo gas. Each line_10: spectrum will also contain information on the gas distribution of our galaxy. ! ! end of abstract general_form_proposers: lname: BEAVER fname: EDWARD inst: UC, SAN DIEGO country: USA ! lname: BURBIDGE fname: E. MARGARET inst: UC, SAN DIEGO country: USA ! lname: MARGON fname: BRUCE inst: WASHINGTON, UNIVERSITY OF country: USA ! lname: ANGEL fname: J. ROGER mi: P. inst: ARIZONA, UNIVERSITY OF country: USA ! lname: BARTKO fname: FRANK inst: APPLIED RESEARCH CORPORATION country: USA ! lname: DAVIDSEN fname: ARTHUR mi: F. inst: JOHNS HOPKINS UNIVERSITY country: USA ! lname: HARMS fname: RICHARD mi: J. inst: APPLIED RESEARCH CORPORATION country: USA ! lname: BOHLIN fname: RALPH inst: SPACE TELESCOPE SCIENCE INSTITUTE country: USA ! lname: FORD fname: HOLLAND mi: C. inst: SPACE TELESCOPE SCIENCE INSTITUTE country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: Require about 400 counts for 10% absorption lines. Scale from 19 mag and line_2: fnu~1/nu. Expose 14000S H13, 1800S H19, 720S H27. Targets chosen to have line_3: Z such that L-alpha is clear of 2E+19 cm-2 of galactic hydrogen, line_4: Cycle 3: 301-308 line_5: Cycle 9: 901-904 ! question: 4 section: 1 line_1: The HST collecting area and UV sensitivity are required for this program. ! question: 5 section: 1 line_1: The SV prerequisite programs for all FOS line_2: observations in this program are: line_3: Prop ID 2195 FOS Target Acquisition Tests line_4: - All observations line_5: Prop ID 1317 Int./Ext. Wavelength Offsets line_6: - 1st target line_7: Prop ID 1318 Spectral Flat Fields line_8: - 1st target line_9: Prop ID 1320 Absolute Spectrophotometry line_10: - 1st visit of bright targets ! question: 7 section: 1 line_1: All absorption lines will be identified to the 2 or 3 SIGMA limits of line_2: detectability. The lines will be associated with galactic or extragalactic line_3: absorbers at given redshifts. Any residual unidentified lines shortward of line_4: the QSO Ly-ALPHA emission line are candidates for Lyman forest absorption. ! question: 8 section: 1 line_1: This program constitutes a scientific investigation that cannot be considered line_2: viable until 7 of the 10 targets have been observed. None of the data in this line_3: program should be made public until 1 year after the program becomes viable as line_4: a whole. ! question: 9 section: 1 line_1: All GTO/FOS programs; SV/SAO observations of 3C273. Program GTO/FOS 1043 is line_2: related. ! question: 10 section: 1 line_1: The computer facilities and research assistance for this work have been funded line_2: entirely by grants. ! !end of general form text general_form_address: lname: BOHLIN fname: RALPH category: PI inst: SPACE TELESCOPE SCIENCE INSTITUTE addr_1: HOMEWOOD CAMPUS city: BALTIMORE state: MD zip: 21218 country: USA phone: (410) 338-4804 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: 3C48 descr_1: E,314,H,515,911 pos_1: RA=01H 37M 41.30S +/- 0.3", pos_2: DEC=+33D 09' 34.6" +/- 0.3" equinox: 2000 rv_or_z: Z=0.37 fluxnum_1: 1 fluxval_1: V=16.2 ! targnum: 2 name_1: 0318-196 descr_1: E,314,H,515,911 pos_1: RA=03H 20M 21.15S +/- 0.3", pos_2: DEC=-19D 26' 31.7" +/-0.3", pos_3: PLATE-ID=S547 equinox: 2000 rv_or_z: Z=0.104 comment_1: B-V=1.04 fluxnum_1: 1 fluxval_1: V=17.5 ! targnum: 3 name_1: 3C245 descr_1: E,314,H,515,911 pos_1: RA=10H 42M 44.63S +/- 0.3", pos_2: DEC=+12D 03' 32.2" +/- 0.3", pos_3: PLATE-ID=N490 equinox: 2000 rv_or_z: Z=1.029 comment_1: B-V=0.46 fluxnum_1: 1 fluxval_1: V=17.29 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 301.000 targname: 3C48 config: FOS/RD opmode: ACQ/BINARY aperture: 4.3 sp_element: MIRROR num_exp: 1 time_per_exp: 10S priority: 1 req_1: ONBOARD ACQ FOR 302; req_2: GROUP 301-304 NO GAP; req_3: REQ UPDATE; req_4: CYCLE 3 / 301-308 ! linenum: 302.000 targname: 3C48 config: FOS/RD opmode: ACQ/PEAK aperture: 0.25X2.0 sp_element: MIRROR num_exp: 1 time_per_exp: 10S priority: 1 req_1: ONBOARD ACQ FOR 303-304; req_2: SPATIAL SCAN; req_3: REQ UPDATE ! linenum: 303.000 targname: 3C48 config: FOS/RD opmode: ACCUM aperture: 0.25X2.0 sp_element: G270H num_exp: 1 time_per_exp: 1800S priority: 1 comment_1: EXPOSURE TIMES FOR SCIENCE comment_2: EXPOSURES IN THIS PROPOSAL comment_3: MAY BE CHANGED BY UP TO comment_4: +/- 20% TO INCREASE S/C EFF. ! linenum: 304.000 targname: 3C48 config: FOS/RD opmode: ACCUM aperture: 0.25X2.0 sp_element: G190H num_exp: 1 time_per_exp: 4200S priority: 1 ! linenum: 305.000 targname: 0318-196 config: FOS/RD opmode: ACQ/BINARY aperture: 4.3 sp_element: MIRROR num_exp: 1 time_per_exp: 33S priority: 1 req_1: ONBOARD ACQ FOR 306; req_2: GROUP 305-308 NO GAP; req_3: REQ UPDATE ! linenum: 306.000 targname: 0318-196 config: FOS/RD opmode: ACQ/PEAK aperture: 0.25X2.0 sp_element: MIRROR num_exp: 1 time_per_exp: 33S priority: 1 req_1: ONBOARD ACQ FOR 307-308; req_2: SPATIAL SCAN; req_3: REQ UPDATE ! linenum: 307.000 targname: 0318-196 config: FOS/RD opmode: ACCUM aperture: 0.25X2.0 sp_element: G270H num_exp: 1 time_per_exp: 2400S priority: 1 ! linenum: 308.000 targname: 0318-196 config: FOS/RD opmode: ACCUM aperture: 0.25X2.0 sp_element: G190H num_exp: 1 time_per_exp: 8400S priority: 1 ! linenum: 901.000 targname: 3C245 config: FOS/RD opmode: ACQ/BINARY aperture: 4.3 sp_element: MIRROR num_exp: 1 time_per_exp: 27S priority: 1 req_1: ONBOARD ACQ FOR 902; req_2: GROUP 901-904 NO GAP; req_3: REQ UPDATE; req_4: CYCLE 9 / 901-904 ! linenum: 902.000 targname: 3C245 config: FOS/RD opmode: ACQ/PEAK aperture: 0.25X2.0 sp_element: MIRROR num_exp: 1 time_per_exp: 27S priority: 1 req_1: ONBOARD ACQ FOR 903-904; req_2: SPATIAL SCAN; req_3: REQ UPDATE ! linenum: 903.000 targname: 3C245 config: FOS/RD opmode: ACCUM aperture: 0.25X2.0 sp_element: G270H num_exp: 1 time_per_exp: 1400S priority: 1 ! linenum: 904.000 targname: 3C245 config: FOS/RD opmode: ACCUM aperture: 0.25X2.0 sp_element: G190H num_exp: 1 time_per_exp: 8000S priority: 1 ! ! end of exposure logsheet scan_data: line_list: 302,306,902 fgs_scan: cont_dwell: D dwell_pnts: 7 dwell_secs: 0.00 scan_width: 0.0000 scan_length: 0.4000 sides_angle: 0.0000 number_lines: 1 scan_rate: 0.0000 first_line_pa: 90.0000 scan_frame: S/C len_offset: 0.2 wid_offset: ! ! end of scan data