! $Id: 5328,v 6.1 1994/07/27 16:37:25 pepsa Exp $ coverpage: title_1: HS 1700+6416: A LABORATORY FOR ASTROPHYSICAL EUV SPECTROSCOPY : title_2: CYCLE4 HIGH sci_cat: QUASARS AND AGN sci_subcat: QUASAR ABSORPTION proposal_for: GO pi_fname: DIETER pi_lname: REIMERS pi_inst: 5580 pi_country: GERMANY pi_phone: 494072524112 hours_pri: 9.00 num_pri: 1 hrs: Y off_fname: DIETER off_lname: REIMERS off_title: EXECUTIVE DIRECTOR off_inst: 5580 off_addr_1: HAMBURGER STERNWARTE off_addr_2: GOJENBERGSWEG 112 off_city: 21029 HAMBURG off_country: GERMANY off_phone: 494072524112 ! end of coverpage abstract: line_1: We plan to observe the unique QSO HS 1700+6416 with the HRS with the line_2: LSA in low resolution in the range 1150 to 1650 A, where line_3: useful spectra are not yet available, with the aim to detect further line_4: EUV quasar absorption lines: line_5: NeIII 489, NeIV 543, NeV 568, 480, CIII 386, NIII 374, Mg VI 402 in line_6: several high z Lyman limit systems (LLS). We expect an enhanced neon abundance line_7: Ne/C ~= O/C ~= 0.5 if the composition is extreme Halo like and line_8: originates in SN II. We further wish to measure OIV 608, OV 629, line_9: NIV 765, CIII 977 in the LLSs z = 0.8642 and 1.1572 in order to line_10: determine O/C and N/C abundance ratios for a comparison with values line_11: obtained already for high redshift systems like z=2.433, 2.1678, line_12: 1.8465. Finally, we want to detect HeI 584 in the LLSs z = 1.1572, line_13: 1.8464 and 1.725. ! ! end of abstract general_form_proposers: lname: REIMERS fname: DIETER inst: 5580 country: GERMANY esa: Y ! lname: VOGEL fname: SUSANNE inst: 5580 country: GERMANY esa: Y ! lname: HAGEN fname: HANS mi: J. inst: 5580 country: GERMANY esa: Y ! lname: ROSA fname: MICHAEL inst: 5555 country: GERMANY esa: Y ! lname: WAMSTEKER fname: WILLEM inst: 7650 country: SPAIN esa: Y ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: We plan to take HRS-spectra at low resolution (~= 2000) with the line_2: LSA + G140L covering with two exposures the wavelength range 1150 to line_3: 1650 A of the high redshift (z=2.72) quasar HS 1700+6416. This QSO is line_4: brighter by a factor of 10 than any other known high redshift QSO and line_5: offers the unique chance to study the EUV. line_6: 2 Exposures are necessary to cover the yet missing range: line_7: 1. GHRS + LSA + G140L LAMBDAc = 1300 texp = 270m line_8: 2. " LAMBDAc = 1600 texp = 270m ! question: 3 section: 2 line_1: ! question: 4 section: 1 line_1: Spectroscopy at a resolution of 2000 in the UV of a 16th magnitude QSO line_2: can only be done with HST. line_3: The QSO has been studied with the FOS in the range 1200 - 3270 with line_4: spectacular results on quasar absorption. However, the range line_5: LAMBDA < 1650A was only covered at a S/N ~= 4, insufficient for line_6: absorption line spectroscopy. Only the HRS with the LSA in low line_7: resolution has the capability to do spectroscopy of the rich QSO line_8: absorption spectrum below 1650 A. line_9: The object has been observed also with a deep ROSAT PSPC exposure line_10: (detected ! question: 5 section: 1 line_1: ! question: 6 section: 1 line_1: ! ! question: 8 section: 1 line_1: ! question: 9 section: 1 line_1: P 2288: Spectroscopy of the UV brightest known high-redshift Quasar line_2: (PI Reimers, CoIs Hagen, Engels, Groote, Wamsteker, Clavel) line_3: Main results: line_4: 1. The QSO continuum, cut into steps by 7 optically thin Lyman line_5: limit systems,increases to a rest wavelength of 320 A. line_6: 2. Several hundred absorption lines in 13 z-systems with many "new" line_7: ions are seen (HeI, OV, OIV, OIII, NIII, NIV,...) line_8: 3. The LLSs show O/C enhancements by factors 3 to 5, similar to line_9: extreme Halo composition. line_10: 4. The shape of the ionizing background radiation could be determined. line_11: Publications: line_12: 1. D. Reimers et al.: The O/C abundance ratio in absorbing gas clouds line_13: at high redshift Nature 360, 561 (1992) line_14: 2. Reimers, D., Hagen, H.-J., Vogel, S.: First spectroscopy of a high line_15: redshift quasar at EUV rest wavelengths: EUV energy distribution, line_16: emission lines of HS 1700+6416 and CNO abundances of metal line_17: absorption line systems Proceed. ST-ECF/STScI Workshop "Science line_18: with the Hubble Space Telescope",ESO Conf. 44, p.43-51 (1992) line_19: 3. Vogel, S., Reimers, D.,"New constraints for the shape of the UV line_20: background at z = 2", Astr. Astrophys. Letters in press line_21: 4. Reimers, D., Vogel, S.,"HeI absorption lines in high-redshift Lyman line_22: limit systems of the QSO HS 1700+6416 - a test of Big Bang line_23: nucleosynthesis?" Astron. Astrophys. 276,L13-L16 ! question: 10 section: 1 line_1: VAX cluster and Intel i860 parallel computer are available for data line_2: analysis. line_3: 2 postdoc positions for HST data financed by BMFT. ! !end of general form text general_form_address: lname: Reimers fname: Dieter category: PI inst: 5580 addr_1: Hamburger Sternwarte addr_2: Gojenbergsweg 112 city: 21029 Hamburg country: Germany phone: 494072524112 telex: 494072524198 ! lname: category: CON ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: HS1700+6416 descr_1: E,313,321 pos_1: RA = 17H 1M 0.48S +/- 0.05S, pos_2: DEC = 64D 12' 08.9" +/- 0.3" equinox: 2000 rv_or_z: Z = 2.72 fluxnum_1: 1 fluxval_1: B = 16.36 +/- 0.02 fluxnum_2: 2 fluxval_2: B-V = 0.26 +/- 0.02 fluxnum_3: 3 fluxval_3: E(B-V) = 0.05 +/- 0.02 fluxnum_4: 4 fluxval_4: F(1300) = 4 +/- 0.5 E-15 fluxnum_5: 5 fluxval_5: F(1600) = 2 +/- 0.5 E-15 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 targname: HS1700+6416 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-N2 num_exp: 1 time_per_exp: 18S fluxnum_1: 1 priority: 1 param_1: SEARCH-SIZE=3 param_2: BRIGHT=RETURN param_3: LOCATE=YES req_1: CYCLE 4; req_2: ONBOARD ACQ FOR 1.1 comment_1: STEP TIME = 1S ! linenum: 1.100 targname: HS1700+6416 config: HRS opmode: ACQ/PEAKUP aperture: 2.0 sp_element: MIRROR-N2 num_exp: 1 time_per_exp: 204S fluxnum_1: 1 priority: 1 req_1: CYCLE 4; req_2: ONBOARD ACQ FOR 1.2-1.3 comment_1: STEP TIME = 1S ! linenum: 1.200 targname: HS1700+6416 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G140L wavelength: 1100-1400 num_exp: 14 time_per_exp: 19M s_to_n: 27 s_to_n_time: 270M fluxnum_1: 4 priority: 1 param_1: FP-SPLIT=FOUR req_1: CYCLE 4 ! linenum: 1.300 targname: HS1700+6416 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G140L wavelength: 1400-1700 num_exp: 17 time_per_exp: 18M s_to_n: 11 s_to_n_time: 300M fluxnum_1: 5 priority: 1 param_1: FP-SPLIT=FOUR req_1: CYCLE 4 ! ! end of exposure logsheet ! No scan data records found