! File: 1225C.PROP ! Database: PEPDB ! Date: 16-FEB-1994:06:46:44 coverpage: title_1: NEBULOSITY ASSOCIATED WITH THE NEARBY QSO MR 2251-178 sci_cat: QUASARS & AGN sci_subcat: QUASAR EMISSION proposal_for: GTO/FOC pi_fname: ALEC pi_lname: BOKSENBERG pi_inst: ROYAL GREENWICH OBSERVATORY pi_country: UNITED KINGDOM pi_phone: 0323-833171 keywords_1: QSO - INTERSTELLAR MATTER - KINEMATICS hours_pri: 4.00 num_pri: 2 pi_position: PROFESSOR ! end of coverpage abstract: line_1: Long-slit spectroscopy of the nearby QSO MR2251-178 will allow us to study the line_2: dynamics of its nuclear narrow line region and the link between this region and line_3: the surrounding ionized nebulosity, to determine the gas excitation gradients line_4: and the total column density of ionized gas. line_6: In addition the imaging mode will give the morphology of the ionized gas within line_7: the narrow line region and the inner nebulosity and will allow comparison line_8: between LyAlpha haloes of low and high redshift QSO's. ! ! end of abstract general_form_proposers: lname: BOKSENBERG fname: ALEC inst: ROYAL GREENWICH OBSERVATORY country: UNITED KINGDOM esa: X ! lname: BERGERON fname: JACQUELINE inst: INSTITUTE OF ASTROPHYSICS, PARIS country: FRANCE esa: X ! lname: MACCHETTO fname: F. DUCCIO inst: ESA, SPACE TELESCOPE SCIENCE INSTITUTE country: USA esa: X ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: imaging : one exposure of 3000 sec using a narrow filter centred on the Lyalpha line_2: redshifted emission line line_3: spectroscopy : three exposures, each of about 5000 sec line_4: - one along the major axis with a cut-order filter to only get the optical line_5: range (information on both the continuum and line emissions) line_6: - one along the minor axis without filter to observe the optical and the UV line_7: emission lines line_8: - one off-centred by about one (or one half) arcsec to obtain after spatial line_9: rebinning a higher S/N ratio spectrum for the ionized gas outside the BLR. This line_10: tangential spatial rebinning, along about 0.5 to 1 arcsec paralell to the minor line_11: axis, does not degrade substantially the emission line profiles and will give line_12: detailed emission line ratios (including weaker lines as [0III]Lambda 4363) line_13: and allow a search for a possible abdorption component due to the ionized of line_14: the nebulosity and outer envelope. ! question: 4 section: 1 line_1: Neither the narrow line region, nor the transition zone between the NLR and the line_2: nebulosity can be resolved from the ground. The kinematics, spatial line_3: distribution, density and ionization gradients of these inner ionized regions line_4: of the nearby QSO MR 2251-178 can only be studied with the ST using the line_5: long-slit spectroscopy mode of the FOC. ! question: 6 section: 1 line_1: Obsrvation of diffuse emission (more crucially the search of stellar absorption line_2: lines) requires a dark sky. ! question: 7 section: 1 line_1: We are very familiar with data reduction and analysis of IPCS frames line_2: (spectroscopy mode) and CCD images. We foresee a similar type of data analysis line_3: with the results from the FOC. line_4: At Paris our software facilities are one HP 1000 (RTE 6 operating system) and line_5: one Vax 11/780 (VMS 3.4 operating system) on which the IHAP-ESO AND line_6: MIDAS-ESO-ECF data reduction systems are installed respectively. Further, line_7: there is a software centre in Marseille which is to remain in close contact line_8: with the ST Sci (Baltimore) and ECF (Garching). It will follow the software line_9: development of these two institutes and provide additional data analysis line_10: packages. Some application programmes to image analysis, part of the software line_11: developed by A. Bijaoui at the Nice Observatory, are currently adapted on the line_12: VAX by A. Llebaria (at the "French Pilot Centre for the Space Telescope" in line_13: Marseille). line_15: We rely upon the ST Sci for software related to first step geometric and line_16: photometric corrections, and wavelength calibration. However we can do these line_17: first step calibrations, if we receive all the frame allowing to define the line_18: instrument characteristics. line_20: In addition we have access to the UK STARLINK system at RGO. ! question: 13 section: 1 line_1: Imaging and long-slit spectroscopy of the nearby QSO MR 2251-178 will provide line_2: information on the inner ionized region and the transition zone between the NLR line_3: and the extended nebulosity. In particular this will allow a study of the line_4: kinematics (stellar and gaseous components), spatial distribution, density and line_5: excitation gradients (gaseous component) within the inner 5 kpc width of line_6: spatial resolution of 170 pc. ! !end of general form text general_form_address: lname: BERGERON fname: JACQUELINE category: CON inst: INSTITUT D'ASTROPHYSIQUE addr_1: 98 BIS BOULEVARD ARAGO addr_2: 75014 city: PARIS country: FRANCE phone: 1.3201425 telex: 270070 C/OIAP ! lname: BOKSENBERG fname: ALEC title: PROF. category: PI inst: ROYAL GREENWICH OBSERVATORY addr_1: HERSTMONCEUX CASTLE addr_2: BN27 1RP city: HAILSHAM, EAST SUSSEX country: UNITED KINGDOM phone: (44)323-833171 telex: 87451 RGOBSY G ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: MR2251-178 descr_1: NEARBY QSO pos_1: RA = 22H 51M 25.9S +/- 0.1S, pos_2: DEC = -17D 50' 56.7" +/- 1" equinox: 1950 pm_or_par: NO rv_or_z: Z=0.06398 acqpr_1: EXT plate_req: N plate_avail: N comment_1: POINT TOL 0.1". comment_2: POSITION IS GASP COG fluxnum_1: 1 fluxval_1: F-LINE(1216) = 4 +/- 2 E-15 fluxnum_3: 2 fluxval_3: F-LINE(5007) = 5 +/- 2 E-14 ! targnum: 2 name_1: MR2251-178W descr_1: NEBULOSITY AROUND NEARBY QSO pos_1: R = 1.0" , pos_2: PA = 270D , pos_3: FROM 1 equinox: 1950 pm_or_par: NO rv_or_z: Z=0.06398 acqpr_1: EXT plate_req: N plate_avail: N fluxnum_1: 1 fluxval_1: F-LINE(1216) = 4 +/- 2 E-15 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 5.000 targname: MR2251-178 config: FOC/48 opmode: ACQ aperture: 128X128-ASLIT sp_element: F140W num_exp: 1 time_per_exp: 120S fluxnum_1: 1 priority: 1 req_1: ONBOARD ACQ FOR 7; req_2: GUID TOL 0.05"/5-9; req_3: CYCLE 1; req_4: ORIENT 350D +/- 10D; ! linenum: 6.000 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: ^ num_exp: ^ time_per_exp: ^ fluxnum_1: ^ priority: 1 req_1: INT ACQ FOR 8,9; req_2: CYCLE 1; req_3: ORIENT 80D +/- 10D; ! linenum: 7.000 targname: MR2251-178 config: FOC/48 opmode: SPEC aperture: 256X1024-SLIT sp_element: G450M wavelength: 3600-5300 num_exp: 1 time_per_exp: 2000S fluxnum_1: 2 priority: 1 param_1: PIXEL=25X25 req_1: SAME ORIENT FOR 7 AS 5; req_2: CYCLE 1; DARK TIME; req_3: SAME POS FOR 7 AS 5; comment_1: ORIENT 350D +/- 10D IS EQUALLY GOOD. ! linenum: 8.000 targname: MR2251-178 config: FOC/48 opmode: SPEC aperture: 256X1024-SLIT sp_element: GRAT-PRISM num_exp: 1 time_per_exp: 2000S fluxnum_1: 1 fluxnum_3: 2 priority: 1 req_1: DARK TIME; req_2: SAME POS FOR 8-9 AS 6; req_3: SAME ORIENT FOR 8-9 AS 6; req_4: CYCLE 1; comment_1: ORIENT 260D +/- 10D IS EQUALLY GOOD ! linenum: 9.000 targname: MR2251-178W config: FOC/48 opmode: SPEC aperture: 256X1024-SLIT sp_element: ^ num_exp: 1 time_per_exp: 2000S fluxnum_1: 1 priority: 1 req_1: DARK TIME; req_2: CYCLE 1 ! ! end of exposure logsheet ! No scan data records found