! File: 4061C.PROP ! Database: PEPDB ! Date: 20-FEB-1994:07:02:31 coverpage: title_1: SEARCH FOR EXTENDED GALACTIC HALOS (FOS 23) AUGMENTATION: title_2: CYCLE 2 OBSERVATIONS sci_cat: QUASARS & AGN proposal_for: AUG/FOS cont_id: 3646 pi_fname: RALPH pi_lname: BOHLIN pi_inst: SPACE TELESCOPE SCIENCE INSTITUTE pi_country: USA pi_phone: (301) 338-4804 keywords_1: GALACTIC HALOS, QUASAR hours_pri: 5.00 num_pri: 1 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: This proposal requests time to complete the program GTO/FOS 1043 observation line_2: of 0015+162, Q1601.5+1747, and 3C66A. Because of the large z=0.533 of the line_3: host cluster, the 0015+162 observations include G160L spectra to look for line_4: Lyman continuum absorption shifted to 1416A. line_5: Cycle 2: 201-205 ! question: 4 section: 1 line_1: The HST collecting area and UV sensitivity are required for this program. ! question: 5 section: 2 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: (301) 338-4804 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: 3C66A descr_1: E,314,H,515,911 pos_1: RA=02H 22M 39.62S +/- 0.3", pos_2: DEC=+43D 02' 08.0" +/- 0.3", pos_3: PLATE-ID=01WN equinox: 2000 rv_or_z: Z=0.444 comment_1: V IS VARIABLE FROM 15 TO 16 fluxnum_1: 1 fluxval_1: V=15.5+/-0.5 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 201.000 targname: 3C66A config: FOS/BL opmode: ACQ/BINARY aperture: 4.3 sp_element: MIRROR num_exp: 1 time_per_exp: 18S priority: 1 req_1: ONBOARD ACQ FOR 202; req_2: GROUP 201-205 WITHIN 15D; req_3: CYCLE 2 / 201-205 ! linenum: 202.000 targname: 3C66A config: FOS/BL opmode: ACQ/PEAK aperture: 0.25X2.0 sp_element: MIRROR num_exp: 1 time_per_exp: 18S priority: 1 req_1: ONBOARD ACQ FOR 203-205; req_2: SPATIAL SCAN ! linenum: 203.000 targname: 3C66A config: FOS/BL opmode: ACCUM aperture: 0.25X2.0 sp_element: G270H num_exp: 1 time_per_exp: 720S 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: 204.000 targname: 3C66A config: FOS/BL opmode: ACCUM aperture: 0.25X2.0 sp_element: G190H num_exp: 1 time_per_exp: 1200S priority: 1 ! linenum: 205.000 targname: 3C66A config: FOS/BL opmode: ACCUM aperture: 0.25X2.0 sp_element: G130H num_exp: 1 time_per_exp: 10725S priority: 1 ! ! end of exposure logsheet scan_data: line_list: 202 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