! $Id: 5477,v 9.1 1995/01/09 15:26:36 pepsa Exp $ coverpage: title_1: SPECTRAL INDEX MAPPING AND SECULAR CHANGES IN THE JET OF M87: CYCLE4 title_2: HIGH sci_cat: QUASARS & AGN sci_subcat: JETS proposal_for: GO pi_title: DR. pi_fname: FERDINANDO pi_mi: D. pi_lname: MACCHETTO pi_inst: STSCI pi_country: USA pi_phone: 301-338-4790 hours_pri: 10.87 num_pri: 1 wf_pc: Y foc: Y pi_position: DIVISION HEAD, SPD off_fname: HERVEY off_lname: STOCKMAN off_title: DEPUTY DIRECTOR off_inst: 3470 off_addr_1: 3700 SAN MARTIN DRIVE off_city: BALTIMORE off_state: MD off_zip: 21218 off_country: USA off_phone: (410)-338-4730 ! end of coverpage abstract: line_1: We propose to map the optical-to-UV spectrum of the M87 jet at ~0.1" resolution line_2: using WFPC2 and the FOC. At this resolution it will be possible, for line_3: the first time, to map the optical spectral indices and "break frequency" both line_4: along and across an extragalactic jet. Preliminary comparison of 372 nm FOC line_5: data and 2 cm VLA data indicate the optical emission is more concentrated in line_6: the knots than the radio emission. Detailed study of the optical spectrum line_7: itself will help elucidate the physical causes of this effect, and perhaps line_8: reveal the sites of particle acceleration (if any). Variations in the line_9: frequency of the optical spectral break may show how the magnetic field varies line_10: with distance from the center of the jet. We will also compare 1991 FOC line_11: data with the Cycle 4 observations to search for secular changes line_12: or motions in the jet. Typical speeds found with VLA observations range from line_13: ~0.5c and up to 3c, which is within current HST measurement capabilities. An line_14: optical determination of the velocity field will help confirm the radio result line_15: and better constrain speed of the jet fluid. Since the optical emission is line_16: more concentrated near the jet axis than the radio emission, the optical data line_17: will also show whether there are strong velocity variations across the jet. line_18: Secular changes in luminosity or polarization are also likely as the knots line_19: move, which will provide information on the evolution of the electron energy line_20: distribution and magnetic fields. ! ! end of abstract general_form_proposers: lname: MACCHETTO fname: FERDINANDO title: DR. mi: D. inst: STSCI country: USA esa: Y ! lname: SPARKS fname: WILLIAM title: DR. mi: B inst: STSCI country: USA esa: N ! lname: BIRETTA fname: JOHN title: DR. inst: STSCI country: USA esa: N ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: We propose FOC and WFPC2 observations of the nucleus, jet and line_2: counter-jet of M87. line_3: Direct FOC images will be taken in the F140W and F320W line_4: ultraviolet filters, with and without neutral density. line_5: To cover the whole jet we need three different line_6: pointings in the 512x512 format. line_7: The WFPC2 observations will be taken with the F555W and F785LP line_8: filters, including also the counter-jet. line_9: Orientation will be chosen so that the counter-jet emission region falls line_10: on one of the WF CCDs, thus affording higher signal-to-noise ratio for line_11: this weak feature. Also polarization images (F555W) through each quad of line_12: the polarizer. ! question: 4 section: 1 line_1: The observations require the highest spatial resolution for measurement of small line_2: proper motions, for obtaining usefully resolved Faraday rotation-free and line_3: wavelength independent polarization maps, for comparison with existing VLA data line_4: and to discriminate the nuclear point source from its surroundings. The far-UV line_5: imaging unique to HST also allows us to probe the most energetic electron line_6: populations at the highest resolution currently possible. In addition, the line_7: extreme stability of the space environment is a strong asset in measurements of line_8: this type. ! question: 5 section: 1 line_1: Interactive observations needed to locate the jet line_2: accurately within the restricted FOC field of view. line_3: The FOC orientation requirements will allow line_4: a greater overlapping between the different exposures. line_5: The WFPC orientation requirements are necessary to line_6: place the jet in PC1 and the counter-jet in any of the line_7: wide field cameras. line_8: Please execute the WFPC2 and FOC observations within one month line_9: of each other. ! question: 6 section: 1 line_1: INT FLATs to measure reseaux positions before and after line_2: observations to accurately model the FOC geometric line_3: distorsion. line_4: All exposures have to taken within a month because of line_5: expected proper motion of the jet. line_6: Constraints on the orientation and the stability of the line_7: require consecutive exposures for the FOC. line_8: For the same reasons the set of WFPC2 observations is line_9: required without gap. ! ! question: 8 section: 1 line_1: none ! question: 9 section: 1 line_1: Miscellaneous FOC GTO observations of M87 jet. line_2: Cycle 2 proposal 3594 to conduct single wavelength polarization observations line_3: of the M87 jet. line_4: Detailed images and spectral index maps of M87 showing both striking similarity line_5: between radio and optical data, and also clear differences. Optical emission is line_6: more centrally concentrated, and more localized in the knots than the radio line_7: emission. ! question: 10 section: 1 line_1: The STScI supplies network connections and a common workstation-based computing line_2: environment (printers, hard-copier, fileserver with shared diskspace). The line_3: proposers have or will have workstations obtained from previous grants which line_4: might require upgrade and continuing maintenance. No dedicated research line_5: assistants or students are available, and such staff must be proposed for and line_6: funded. In addition, we would support a post-doc with funding provided line_7: by this proposal. ! !end of general form text general_form_address: lname: Macchetto fname: Ferdinando mi: D. title: Dr. category: PI inst: STSCI addr_1: 3700 SAN MARTIN DRIVE city: BALTIMORE state: MD zip: 21218 country: USA phone: 301-338-4790 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: M87-JET-POS1 name_2: NGC4486 descr_1: E,315 pos_1: RA = 12H 28M 17.407S +/- 0.01S, pos_2: DEC = 12D 40' 02.50" +/- 0.1" equinox: 1950 pm_or_par: N rv_or_z: Z = 0.0043 acqpr_1: EXT fluxval_1: V=8.63 ! targnum: 2 name_1: M87-JET-POS2 name_2: NGC4486 descr_1: E,315 pos_1: RA = 12H 28M 16.984S +/- 0.1S, pos_2: DEC = 12D 40' 05.00" +/- 0.1" equinox: 1950 pm_or_par: N rv_or_z: Z = 0.0043 acqpr_1: EXT fluxval_1: V=8.63 ! targnum: 3 name_1: M87-JET-POS3 name_2: NGC4486 descr_1: E,315 pos_1: RA = 12H 28M 16.550S +/- 0.1S, pos_2: DEC = 12D 40' 07.22" +/- 0.1" equinox: 1950 pm_or_par: N rv_or_z: Z = 0.0043 acqpr_1: EXT fluxval_1: V=8.63 ! targnum: 4 name_1: M87-NUC name_2: NGC4486 descr_1: E,315 pos_1: RA = 12H 28M 17.57S +/- 0.01S, pos_2: DEC = 12D 40' 01.749" +/- 0.01" equinox: 1950 pm_or_par: N rv_or_z: Z = 0.0043 acqpr_1: EXT fluxval_1: V=8.63 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 sequence_1: DEF sequence_2: FOCM87 targname: INTFLAT config: FOC/96 opmode: RESEAU aperture: 512X512 sp_element: CLEAR num_exp: 1 time_per_exp: DEF priority: 1 req_1: CYCLE 4; req_2: SEQ 1-15 NO GAP ! linenum: 2.000 sequence_1: DEF sequence_2: FOCM87 targname: M87-JET-POS1 config: FOC/96 opmode: IMAGE aperture: 512X512 sp_element: F342W num_exp: 1 time_per_exp: 5M priority: 1 req_1: CYCLE 4; req_2: INT ACQ FOR 11 ! linenum: 11.000 sequence_1: DEF sequence_2: FOCM87 targname: M87-JET-POS1 config: FOC/96 opmode: IMAGE aperture: 512X512 sp_element: F140W num_exp: 3 time_per_exp: 30M priority: 1 req_1: CYCLE 4 ! linenum: 12.000 sequence_1: DEF sequence_2: FOCM87 targname: M87-JET-POS1 config: FOC/96 opmode: IMAGE aperture: 512X512 sp_element: F342W num_exp: 1 time_per_exp: 32M priority: 1 req_1: CYCLE 4 ! linenum: 13.000 sequence_1: DEF sequence_2: FOCM87 targname: M87-JET-POS1 config: FOC/96 opmode: IMAGE aperture: 512X512 sp_element: F342W,F2ND num_exp: 1 time_per_exp: 30M priority: 1 req_1: CYCLE 4 ! linenum: 14.000 sequence_1: DEF sequence_2: FOCM87 targname: M87-JET-POS1 config: FOC/96 opmode: IMAGE aperture: 512X512 sp_element: F342W,F4ND num_exp: 1 time_per_exp: 30M priority: 1 req_1: CYCLE 4 ! linenum: 15.000 sequence_1: DEF sequence_2: FOCM87 targname: INTFLAT config: FOC/96 opmode: RESEAU aperture: 512X512 sp_element: CLEAR num_exp: 1 time_per_exp: DEF priority: 1 req_1: CYCLE 4 ! linenum: 19.000 sequence_1: DEF sequence_2: FOCM87 targname: INTFLAT config: FOC/96 opmode: RESEAU aperture: 512X512 sp_element: CLEAR num_exp: 1 time_per_exp: DEF priority: 1 req_1: CYCLE 4; req_2: SEQ 19-25 NO GAP; ! linenum: 20.000 sequence_1: DEF sequence_2: FOCM87 targname: M87-JET-POS2 config: FOC/96 opmode: IMAGE aperture: 512X512 sp_element: F342W num_exp: 1 time_per_exp: 5M priority: 1 req_1: CYCLE 4; req_2: INT ACQ FOR 21 ! linenum: 21.000 sequence_1: DEF sequence_2: FOCM87 targname: M87-JET-POS2 config: FOC/96 opmode: IMAGE aperture: 512X512 sp_element: F140W num_exp: 3 time_per_exp: 32M priority: 1 req_1: CYCLE 4 ! linenum: 24.000 sequence_1: DEF sequence_2: FOCM87 targname: M87-JET-POS2 config: FOC/96 opmode: IMAGE aperture: 512X512 sp_element: F342W num_exp: 2 time_per_exp: 32M priority: 1 req_1: CYCLE 4 ! linenum: 25.000 sequence_1: DEF sequence_2: FOCM87 targname: INTFLAT config: FOC/96 opmode: RESEAU aperture: 512X512 sp_element: CLEAR num_exp: 1 time_per_exp: DEF priority: 1 req_1: CYCLE 4; ! linenum: 29.000 sequence_1: DEF sequence_2: FOCM87 targname: INTFLAT config: FOC/96 opmode: RESEAU aperture: 512X512 sp_element: CLEAR num_exp: 1 time_per_exp: DEF priority: 1 req_1: CYCLE 4; req_2: SEQ 29-33 NO GAP; ! linenum: 30.000 sequence_1: DEF sequence_2: FOCM87 targname: M87-JET-POS3 config: FOC/96 opmode: IMAGE aperture: 512X512 sp_element: F342W num_exp: 1 time_per_exp: 5M priority: 1 req_1: CYCLE 4; req_2: INT ACQ FOR 31 ! linenum: 31.000 sequence_1: DEF sequence_2: FOCM87 targname: M87-JET-POS3 config: FOC/96 opmode: IMAGE aperture: 512X512 sp_element: F140W num_exp: 3 time_per_exp: 32M priority: 1 req_1: CYCLE 4 ! linenum: 32.000 sequence_1: DEF sequence_2: FOCM87 targname: M87-JET-POS3 config: FOC/96 opmode: IMAGE aperture: 512X512 sp_element: F342W num_exp: 3 time_per_exp: 32M priority: 1 req_1: CYCLE 4 ! linenum: 33.000 sequence_1: DEF sequence_2: FOCM87 targname: INTFLAT config: FOC/96 opmode: RESEAU aperture: 512X512 sp_element: CLEAR num_exp: 1 time_per_exp: DEF priority: 1 req_1: CYCLE 4 ! linenum: 34.000 sequence_1: USE sequence_2: FOCM87 req_1: ORIENT 10D +/- 15D; req_2: SELECT 1 OF 34 OR 35 req_3: OR 36 OR 37 comment_1: JET PA 291D ALONG AN FOC DIAGONAL. ! linenum: 35.000 sequence_1: USE sequence_2: FOCM87 req_3: ORIENT 100D +/- 15D; ! linenum: 36.000 sequence_1: USE sequence_2: FOCM87 req_3: ORIENT 190D +/- 15D; ! linenum: 37.000 sequence_1: USE sequence_2: FOCM87 req_3: ORIENT 280D +/- 15D; ! linenum: 41.0 sequence_1: DEF sequence_2: M87WF3 targname: M87-NUC config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F555W num_exp: 1 time_per_exp: 30S priority: 1 req_1: CYCLE 4 / 41.0-44.0; req_2: SEQ 41.0-44.0 NO GAP; req_3: ORIENT 296D +/- 15D; req_4: POS TARG -10.0,-10.0 comment_1: COUNTER-JET ON WF3 comment_2: POS TARG to get nucleus closer to apex comment_3: Jet pa 291D intended to run from apex comment_4: diag across PC1, i.e. along U3, this comment_5: sequence. ! linenum: 42.0 sequence_1: DEF sequence_2: M87WF3 targname: M87-NUC config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F555W num_exp: 4 time_per_exp: 10M priority: 1 req_1: ORIENT 296D +/- 15D; req_2: POS TARG -10.0,-10.0 ! linenum: 43.0 sequence_1: DEF sequence_2: M87WF3 targname: M87-NUC config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F814W num_exp: 1 time_per_exp: 30S priority: 1 req_1: ORIENT 296D +/- 15D; req_2: POS TARG -10.0,-10.0 ! linenum: 44.0 sequence_1: DEF sequence_2: M87WF3 targname: M87-NUC config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F814W num_exp: 4 time_per_exp: 10M priority: 1 req_1: ORIENT 296D +/- 15D; req_2: POS TARG -10.0,-10.0 ! linenum: 45.0 sequence_1: DEF sequence_2: M87POL targname: M87-NUC config: WFPC2 opmode: IMAGE aperture: WF2-FIX sp_element: F555W num_exp: 2 time_per_exp: 4M priority: 1 req_1: CYCLE 4 / 45.0-47.1; req_2: SEQ 45.0-47.1 NO GAP; req_3: SAME ORIENT FOR 45.1-47.1 req_4: AS 45.0; req_5: POS TARG -6.0,+6.0 comment_1: JET AND COUNTER JET ON WF2 comment_2: WITHOUT POL. ! linenum: 45.1 sequence_1: DEF sequence_2: M87POL targname: M87-NUC config: WFPC2 opmode: IMAGE aperture: WF2-FIX sp_element: F555W,POLQ num_exp: 3 time_per_exp: 10M priority: 1 req_1: POS TARG -6.0,+6.0 comment_1: JET AND COUNTER JET ON WF2 WITH POL. ! linenum: 46.0 sequence_1: DEF sequence_2: M87POL targname: M87-NUC config: WFPC2 opmode: IMAGE aperture: WF3-FIX sp_element: F555W,POLQ num_exp: 2 time_per_exp: 4M priority: 1 req_1: POS TARG -6.0,-6.0 comment_1: JET AND COUNTER JET ON WF3 comment_2: WITHOUT POL. ! linenum: 46.1 sequence_1: DEF sequence_2: M87POL targname: M87-NUC config: WFPC2 opmode: IMAGE aperture: WF3-FIX sp_element: F555W,POLQ num_exp: 3 time_per_exp: 10M priority: 1 req_1: POS TARG -6.0,-6.0 comment_1: JET AND COUNTER JET ON WF3 WITH POL. ! linenum: 47.0 sequence_1: DEF sequence_2: M87POL targname: M87-NUC config: WFPC2 opmode: IMAGE aperture: WF4-FIX sp_element: F555W,POLQ num_exp: 2 time_per_exp: 4M priority: 1 req_1: POS TARG +6.0,-6.0 comment_1: JET AND COUNTER JET ON WF4 comment_2: WITHOUT POL. ! linenum: 47.1 sequence_1: DEF sequence_2: M87POL targname: M87-NUC config: WFPC2 opmode: IMAGE aperture: WF4-FIX sp_element: F555W,POLQ num_exp: 3 time_per_exp: 10M priority: 1 req_1: POS TARG +6.0,-6.0 comment_1: JET AND COUNTER JET ON WF4 WITH POL. ! linenum: 70.000 sequence_1: USE sequence_2: M87WF3 ! linenum: 80 sequence_1: USE sequence_2: M87POL ! ! end of exposure logsheet ! No scan data records found