! File: 3784C.PROP ! Database: PEPDB ! Date: 19-FEB-1994:19:21:58 coverpage: title_1: HIGH-RESOLUTION IMAGING OF COLLIDING AND MERGING GALAXIES sci_cat: GALAXIES & CLUSTERS sci_subcat: PECULIAR/INTERACTING proposal_for: GO pi_title: DR pi_fname: BRADLEY pi_mi: C. pi_lname: WHITMORE pi_inst: SPACE TELESCOPE SCIENCE INSTITUTE pi_country: USA pi_phone: 410-338-4713 hours_pri: 3.00 num_pri: 2 wf_pc: Y funds_length: 12 funds_date: JUL-92 pi_position: DR off_fname: HERVEY off_mi: S. off_lname: STOCKMAN off_title: DEPUTY DIRECTOR off_inst: STSCI off_addr_1: 3700 SAN MARTIN DRIVE off_city: BALTIMORE off_state: MD off_zip: 21218 off_country: USA off_phone: 301-338-4730 ! end of coverpage abstract: line_1: We propose to obtain high-resolution images, using the WF/PC, line_2: of two colliding and merging galaxies (i.e., NGC 4038/4039 line_3: = "The Antennae" and NGC 7252 ="Atoms-for-Peace Galaxy". line_4: Our goal is to use HST to make critical observations of each line_5: object in order to gain a better understanding of the various line_6: phases of the merger process. Our primary objective is to line_7: determine whether globular clusters are formed during mergers\? ! ! end of abstract general_form_proposers: lname: WHITMORE fname: BRADLEY title: P.I. mi: C. inst: SPACE TELESCOPE SCIENCE INSTITUTE country: U.S.A. ! lname: SCHWEIZER fname: FRANCOIS inst: DEPARTMENT OF TERRESTRIAL MAGNETISM country: U.S.A. ! lname: BORNE fname: KIRK mi: D. inst: SPACE TELESCOPE SCIENCE INSTITUTE country: U.S.A. ! lname: LEITHERER fname: CLAUS inst: SPACE TELESCOPE SCIENCE INSTITUTE country: U.S.A. esa: Y ! lname: ROBERT fname: CARMELLE inst: SPACE TELESCOPE SCIENCE INSTITUTE country: U.S.A. ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: The WFC will be used with the F336W, F555W, and F785LP filters to line_2: observe NGC4038/4039, and the PC with F555W and F785LP to observe NGC line_3: 7252. For NGC4038/4039 we will take three exposures in F555W and line_4: F785LP (30 s, 2x260 s) to increase the dynamic range and also provide line_5: cosmic ray subtraction. Preflash will be used on all line_6: exposures. NGC 7252 will be centered in PC6 in order to line_7: get more of the central region on the best calibrated chip, but still line_8: allow us to fit most of the galaxy. The center of the two disks in line_9: NGC4038/4039 will be centered near the apex of the pyramid. line_10: Don't wait for a UV campaign for the F336W exposure for NGC 4038/4039, line_11: take it at the same time as the other exposures. ! question: 4 section: 1 line_1: The high resolution imaging will provide the ability to line_2: determine whether globular clusters are being created during line_3: the merger event. ! question: 5 section: 1 line_1: S/N REQUIRMENTS: Imaging: S/N = 5 - 10 within a 1" diameter. This will line_2: be sufficient for the image deconvolutions. line_4: EXAMPLE OF TYPICAL CALCULATION ! question: 6 section: 1 line_1: We have assumed that good point spead functions (PSFs) will be line_2: available for the imaging, since ``high priority'' filters have been line_3: chosen. ! question: 7 section: 1 line_1: BW - Use STSDAS to perform standard reductions on images (e.g., flatfielding, line_2: bias subtraction, dark count and preflash subtraction, cosmic ray removal, line_3: absolute calibration, etc.). line_4: - Support development and use of N-body models. line_5: - Perform image reconstructions based on latest STScI expertise. line_7: FS - Reduce extensive set of existing (and soon to be taken) ground-based line_8: data to support the HST observations. line_9: - Image reconstruction and model masking to reveal fine structure. line_11: KB - Modify N-body code to include gaseous dissipation and star formation. line_12: - Use code to develop detailed models for each target (with SDA). line_13: - Run models to determine lifetime of semistellar nuclei during a merger. ! question: 8 section: 1 line_1: ! question: 9 section: 1 line_1: Not applicable. ! question: 10 section: 1 line_1: Schweizer - 50 % matching funds for the purchase of a SPARCSTATION IPC. ! !end of general form text general_form_address: lname: BORNE fname: KIRK category: CON inst: STSCI addr_1: 3700 SAN MARTIN DRIVE city: BALTIMORE state: MD zip: 21218 country: USA phone: 410-338-4945 telex: 410-338-2617 from_date: 01-MAR-92 to_date: 01-JUL-92 ! lname: WHITMORE fname: BRADLEY mi: C. category: PI inst: STSCI addr_1: 3700 SAN MARTIN DRIVE city: BALTIMORE state: MD zip: 21218 country: USA phone: 410-338-4713 telex: 410-338-2617 from_date: 01-JUL-92 to_date: 01-JAN-99 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: NGC4038-4039 name_2: ESO572-47 name_3: PGC37967 descr_1: E, descr_2: 320, 301 pos_1: RA = 11H 59M 20.1S +/- 0.1S, pos_2: DEC = -18D 35' 55" +/- 1" equinox: 1950 pm_or_par: NO rv_or_z: V=1650 comment_1: 1ST FLUX IS TOT. MAG FOR NGC4038. comment_2: 2ND FLUX IS FOR A GLOB. CLUSTER. comment_3: POSITION IS NEAR CENTER OF DUST comment_4: PATCH, BETWEEN TWO NUCLEI. fluxnum_1: 1 fluxval_1: V = 11 fluxnum_2: 2 fluxval_2: V = 21.7 ! targnum: 2 name_1: NGC7252 name_2: ARP 226 name_3: ESO533-15 descr_1: E, 320 pos_1: RA = 22H 17M 57.87S +/- 0.1S, pos_2: DEC = -24D 55' 50" +/- 1" equinox: 1950 pm_or_par: NO rv_or_z: V=4760 comment_1: 1ST FLUX IS TOT. MAG FOR NGC7252. comment_2: 2ND FLUX IS FOR A GLOB. CLUSTER. fluxnum_1: 1 fluxval_1: V = 11.4 fluxnum_2: 2 fluxval_2: V = 24.0 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 targname: NGC4038-4039 config: WFC opmode: IMAGE aperture: WF2-FIX sp_element: F336W num_exp: 1 time_per_exp: 10M priority: 1 param_1: CR-SPLIT = 0.5, param_2: CR-TOLERANCE = 0.1, param_3: PRE-FLASH = YES req_1: CYCLE 2 / 1-7; req_2: POS TARG +38.5,-38.5 / 1-5; req_3: SAME ORIENT FOR 2-5 AS 1; req_4: SAME POS FOR 2-5 AS 1; req_5: SEQ 1-5 NO GAP; comment_1: POS TARG PUTS TARGET VERY NEAR APEX. comment_2: DON'T WAIT FOR UV CAMPAIGN FOR F336W, comment_3: DO IT ANY TIME OF THE YEAR. ! linenum: 2.000 targname: NGC4038-4039 config: WFC opmode: IMAGE aperture: WF2-FIX sp_element: F555W num_exp: 1 time_per_exp: 30S priority: 1 param_1: CR-SPLIT = NO, param_2: PRE-FLASH = YES ! linenum: 3.000 targname: NGC4038-4039 config: WFC opmode: IMAGE aperture: WF2-FIX sp_element: F555W num_exp: 1 time_per_exp: 520S priority: 1 param_1: CR-SPLIT = 0.5, param_2: CR-TOLERANCE = 0.1, param_3: PRE-FLASH = YES ! linenum: 4.000 targname: NGC4038-4039 config: WFC opmode: IMAGE aperture: WF2-FIX sp_element: F785LP num_exp: 1 time_per_exp: 30S priority: 1 param_1: CR-SPLIT = NO, param_2: PRE-FLASH = YES ! linenum: 5.000 targname: NGC4038-4039 config: WFC opmode: IMAGE aperture: WF2-FIX sp_element: F785LP num_exp: 1 time_per_exp: 520S priority: 1 param_1: CR-SPLIT = 0.5, param_2: CR-TOLERANCE = 0.1, param_3: PRE-FLASH = YES ! linenum: 6.000 targname: NGC7252 config: PC opmode: IMAGE aperture: PC6-FIX sp_element: F555W num_exp: 1 time_per_exp: 1400S priority: 1 param_1: CR-SPLIT = 0.5, param_2: CR-TOLERANCE = 0.1, param_3: PRE-FLASH = YES req_1: GROUP 6-7 WITHIN 7D; ! linenum: 7.000 targname: NGC7252 config: PC opmode: IMAGE aperture: PC6-FIX sp_element: F785LP num_exp: 1 time_per_exp: 1400S priority: 1 param_1: CR-SPLIT = 0.5, param_2: CR-TOLERANCE = 0.1, param_3: PRE-FLASH = YES req_1: SAME ORIENT FOR 7 AS 6; req_2: SAME POS FOR 7 AS 6 ! ! end of exposure logsheet ! No scan data records found