! File: 3965C.PROP ! Database: PEPDB ! Date: 20-FEB-1994:01:52:09 coverpage: title_1: SPECTROSCOPY OF BL LAC OBJECTS title_2: CYCLE 2 sci_cat: QUASARS & AGN sci_subcat: BL LAC proposal_for: AUG/HRS cont_id: 1172 pi_title: DR. pi_fname: ALBERT pi_lname: BOGGESS pi_inst: NASA, GODDARD SPACE FLIGHT CENTER pi_country: USA pi_phone: (301) 344-5975 keywords_1: (1) ACTIVE GALACTIC NUCLEI - BL LAC OBJECTS; (2) keywords_2: INTERSTELLAR MEDIUM - GALACTIC HALO hours_pri: 3.60 num_pri: 2 ! end of coverpage abstract: line_1: One of the brightest X-ray emitting BL Lac objects, line_2: PKS 2155-304,will be observed for dual scientific purposes. line_3: The first objective is to look line_4: for the possible shortward shifted absorption in strong UV lines (e.g. C IV, Si line_5: IV and N V) to follow up on the report of shortward-shifted absorption in the line_6: X-ray by Canizares and Kruper (Ap.J., 278, l99 - 1984). A detection of such line_7: absorption would provide additional support to the relativistic jet model, in line_8: which a gas jet from BL Lac nucleus is moving toward us. The second objective line_9: is to probe the galactic halo gas using those bright BL Lac objects as line_10: continuum background source. line_11: A search will also be made for absorption arising in the line_12: the intergalactic medium and halos of intervening galaxies. ! ! end of abstract general_form_proposers: lname: KONDO fname: YOJI inst: NASA, GODDARD SPACE FLIGHT CENTER country: USA ! lname: BRUHWEILER fname: FRED mi: C. inst: CATHOLIC UNIVERSITY OF AMERICA country: USA ! lname: BOGGESS fname: ALBERT inst: NASA, GODDARD SPACE FLIGHT CENTER country: USA ! lname: URRY fname: C. MEGAN inst: MASSACHUSETTS INSTITUTE OF TECHNOLOGY country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: A set of two low resolution exposures, which will cover the entire far-UV line_2: region, will be obtained for MK 421, in cycle 1. line_4: Medium resolution spectra in several selected regions will be obtained to line_5: observe the absorption occurring in the galactic halo. line_7: The work on PKS 2155-304 will be conducted in collaboration with B.D. Savage, line_8: in cycle 0. ! question: 4 section: 1 line_1: Data needed for this investigation are high-resolution ultraviolet spectra that line_2: cannot be obtained from ground or with the IUE. ! question: 7 section: 1 line_1: All data reduction and analysis are expected to be performed at NASA/GSFC or, line_2: in part, at Space Telescope Insititute. ! question: 10 section: 1 line_1: Necessary resourses will be supplied by the host institution, partially line_2: supported by the NASA funds provided through the HRS PI. ! question: 13 section: 1 line_1: One bright BL Lac object will be observed for dual scientific purposes. The line_2: first objective is to look for the possible shortward-shifted broad absorption line_3: occurring in the relativistic jet, which was reported in the X-ray spectrum. line_4: The second objective is to probe the galctic halo and line_5: intergalactic gas against the continuum line_6: spectrum of PKS 2155-304. ! !end of general form text general_form_address: lname: KONDO fname: YOJI inst: NASA, GODDARD SPACE FLIGHT CENTER addr_1: CODE 684 city: GREENBELT state: MD zip: 20771 country: USA phone: (301) 344-6247 ! lname: URRY fname: C. MEGAN inst: MASSACHUSETTS INSTITUTE OF TECHNOLOGY addr_1: 37-607 city: CAMBRIDGE state: MA zip: 02139 country: USA phone: (617) 253-3130 ! lname: BOGGESS fname: ALBERT title: DR. category: PI inst: NASA, GODDARD SPACE FLIGHT CENTER addr_1: CODE 600 city: GREENBELT state: MD zip: 20771 country: USA phone: (301) 344-5975 ! lname: BRUHWEILER fname: FRED mi: C. inst: CATHOLIC UNIVERSITY OF AMERICA addr_1: DEPT. OF PHYSICS city: WASHINGTON state: DC zip: 20064 country: USA phone: (202) 319-5315 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: PKS2155-304 descr_1: E,316 pos_1: RA = 21H 58M 52.000S +/-1", pos_2: DEC = -30D 13' 32.23" +/-1" equinox: 2000.0 pm_or_par: NO fluxnum_1: 1 fluxval_1: V = 13.0 +/- 1.0 fluxnum_2: 2 fluxval_2: F-CONT(1500) = 8.3 +/- 2.0 E-14 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 targname: PKS2155-304 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-N2 num_exp: 1 time_per_exp: 5.0S fluxnum_1: 1 priority: 1 param_1: SEARCH-SIZE=5, param_2: BRIGHT=RETURN req_1: ONBOARD ACQ FOR 1.2; req_2: CYCLE 2 / 1-3.2; req_3: SEQ 1-3.2 ! linenum: 1.200 targname: PKS2155-304 config: HRS opmode: ACQ/PEAKUP aperture: 2.0 sp_element: MIRROR-N2 num_exp: 1 time_per_exp: 81.6S fluxnum_1: 1 priority: 1 req_1: ONBOARD ACQ FOR 2 comment_1: STEP-TIME=0.8S ! linenum: 2.000 targname: PKS2155-304 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G160M wavelength: 1240 num_exp: 3 time_per_exp: 590.4S s_to_n: 8 fluxnum_1: 2 priority: 1 param_1: CENSOR=YES, param_2: STEP-PATT=4 ! linenum: 2.100 targname: PKS2155-304 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G160M wavelength: 1240 num_exp: 3 time_per_exp: 590.4S s_to_n: 8 fluxnum_1: 2 priority: 1 param_1: CENSOR=YES, param_2: STEP-PATT=4 ! linenum: 2.200 targname: PKS2155-304 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G160M wavelength: 1240 num_exp: 6 time_per_exp: 288.0S s_to_n: 8 fluxnum_1: 2 priority: 1 param_1: CENSOR=YES, param_2: STEP-PATT=4 ! linenum: 3.000 targname: PKS2155-304 config: HRS opmode: ACCUM aperture: 2.0 sp_element: ECH-B22 wavelength: 2600 num_exp: 3 time_per_exp: 590.4S s_to_n: 7 fluxnum_1: 2 priority: 1 param_1: CENSOR=YES, param_2: STEP-PATT=6 ! linenum: 3.100 targname: PKS2155-304 config: HRS opmode: ACCUM aperture: 2.0 sp_element: ECH-B22 wavelength: 2600 num_exp: 3 time_per_exp: 590.4S s_to_n: 7 fluxnum_1: 2 priority: 1 param_1: CENSOR=YES, param_2: STEP-PATT=6 ! linenum: 3.200 targname: PKS2155-304 config: HRS opmode: ACCUM aperture: 2.0 sp_element: ECH-B22 wavelength: 2600 num_exp: 7 time_per_exp: 288S s_to_n: 7 fluxnum_1: 2 priority: 1 param_1: CENSOR=YES, param_2: STEP-PATT=6 ! ! end of exposure logsheet ! No scan data records found