! File: 4127C.PROP ! Database: PEPDB ! Date: 20-FEB-1994:09:49:25 coverpage: title_1: GLOBULAR CLUSTER CORE STRUCTURE AND DYNAMICS (FOS 36) title_2: AUGMENTATION: FUTURE-CYCLE CONTINUATION sci_cat: STELLAR POPULATIONS proposal_for: AUG/FOS cont_id: 3651 pi_fname: RALPH pi_lname: BOHLIN pi_inst: SPACE TELESCOPE SCIENCE INSTITUTE pi_country: USA pi_phone: (410) 338-4804 keywords_1: GLOBULAR CLUSTER hours_pri: 5.77 num_pri: 4 fos: Y ! end of coverpage abstract: line_1: Obtain data on the stellar populations in the central cores of globular line_2: clusters. Clusters with and without central unresolved cusps, and with and line_3: without central X-ray sources will be observed. Spectra will be obtained at line_4: the center of the UV brightness, and at a distance within about one core line_5: radius. We might expect these spectra to differ; massive objects formed in line_6: collisions may produce unexpected spectral features, as well as relatively line_7: intense UV radiation in the central core. ! ! end of abstract general_form_proposers: lname: BEAVER fname: EDWARD inst: UC, SAN DIEGO country: USA ! lname: BURBIDGE fname: E. MARGARET inst: UC, SAN DIEGO country: USA ! lname: MARGON fname: BRUCE inst: WASHINGTON, UNIVERSITY OF country: USA ! lname: SPITZER JR. fname: LYMAN inst: PRINCETON UNIVERSITY country: USA ! lname: ANGEL fname: J. ROGER mi: P. inst: ARIZONA, UNIVERSITY OF country: USA ! lname: BARTKO fname: FRANK inst: APPLIED RESEARCH CORPORATION country: USA ! lname: DAVIDSEN fname: ARTHUR mi: F. inst: JOHNS HOPKINS UNIVERSITY country: USA ! lname: HARMS fname: RICHARD mi: J. inst: APPLIED RESEARCH CORPORATION country: USA ! lname: BOHLIN fname: RALPH inst: SPACE TELESCOPE SCIENCE INSTITUTE country: USA ! lname: FORD fname: HOLLAND mi: C. inst: SPACE TELESCOPE SCIENCE INSTITUTE country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: Since the globular clusters are faint, use the low dispersion G160L and line_2: the Prism on the Blueside. Use the lower 0.3" aperture. The PC images line_3: are essential for target acquisition for the spectra. PC filters are line_4: F336W, and F547M. line_5: Cycle 3: 303-308 ! question: 4 section: 1 line_1: The high spatial resolution is required to resolve the interesting line_2: structure in the cores of the globular clusters. We have obtained line_3: ground based CCD images of the targets for comparison. ! question: 5 section: 1 line_1: The SV prerequisite programs for all FOS line_2: observations in this program are: line_3: Prop ID 2195 FOS Target Acquisition Tests line_4: - All observations line_5: Prop ID 1317 Int./Ext. Wavelength Offsets line_6: - 1st target line_7: Prop ID 1318 Spectral Flat Fields line_8: - 1st target line_9: Prop ID 1320 Absolute Spectrophotometry line_10: - 1st visit of bright targets line_11: All WF/PC imaging with a center wavelength line_12: blueward of 5000 Angstroms requires UV flood ! question: 7 section: 1 line_1: The images will be examined for UV-bright objects in the ratios line_2: of the PC images in different bandpasses as a quick look analysis. line_3: A more detailed examination of the images will come from a DAOPHOT line_4: analysis of the PC photometry of all of the stars. ! question: 8 section: 1 line_1: This program does not become a viable scientific investigation until 5 of the 6 line_2: globular clusters have been observed by both the WFPC and FOS. No data should line_3: be made public sooner than 1 year after that time. line_4: The PC and WFC images will be measured for precise target coordinates, so that line_5: the FOS observations can be done as blind offsets from a nearby isolated star. ! question: 9 section: 1 line_1: All GTO/FOS programs. Programs GTO/FOS 1052 and continuation program GTO/FOS line_2: 3281 are related. ! question: 10 section: 1 line_1: The computer facilities and research assistance for this work have been funded line_2: entirely by grants, except for: line_3: 1. Easy access to the public GSSS resources. line_4: 2. Occassional use of the Celco image production capabilities for publication line_5: quality hardcopies. ! !end of general form text general_form_address: lname: BOHLIN fname: RALPH category: PI inst: SPACE TELESCOPE SCIENCE INSTITUTE addr_1: HOMEWOOD CAMPUS city: BALTIMORE state: MD zip: 21218 country: USA phone: (410) 338-4804 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: NGC1851 descr_1: C,201 pos_1: RA=05H 12M 28.03S +/- 0.7", pos_2: DEC=-40D 06' 11.4" +/- 0.7" equinox: 1950 fluxnum_1: 1 fluxval_1: F(1500)=2.5 E-15 fluxnum_2: 2 fluxval_2: SURF(V)=14.7 ! targnum: 2 name_1: NGC6681 name_2: M70 descr_1: C,201 pos_1: RA=18H 39M 57.31S +/- 1", pos_2: DEC=-32D 20' 32.3" +/- 1" equinox: 1950 fluxnum_1: 1 fluxval_1: SURF(V)=15.1 ! targnum: 3 name_1: NGC6093 name_2: M80 descr_1: C,201 pos_1: RA=16H 14M 03.4S +/- 1", pos_2: DEC=-22D 51' 09.2" +/- 1" equinox: 1950 fluxnum_1: 1 fluxval_1: SURF(V)=14.4 ! targnum: 4 name_1: NGC1851-STAR descr_1: I,604,605 pos_1: TBD-EARLY, pos_2: RA-OFF=0S +/- 5.23S, pos_3: DEC-OFF=+0' +/- 1', pos_4: FROM 1 comment_1: POSITION FOR THE -STAR comment_2: WILL BE DETERMINED FROM comment_3: THE PC IMAGES OBTAINED comment_4: IN EARLIER PROPOSALS. ! targnum: 5 name_1: NGC6681-STAR descr_1: I,604 pos_1: TBD-EARLY, pos_2: RA-OFF=0S +/- 4.73S, pos_3: DEC-OFF=+0' +/- 1', pos_4: FROM 2 ! targnum: 6 name_1: NGC6093-STAR descr_1: I,604 pos_1: TBD-EARLY, pos_2: RA-OFF=0S +/- 4.34S, pos_3: DEC-OFF=+0' +/- 1', pos_4: FROM 3 ! targnum: 7 name_1: NGC1851-OFFSET descr_1: A,140 pos_1: TBD-EARLY, pos_2: RA-OFF=0S +/- 5.23S, pos_3: DEC-OFF=+0' +/- 1', pos_4: FROM 1 comment_1: POSITION FOR THE OFFSET comment_2: STAR WILL BE DETERMINED comment_3: FROM THE PC IMAGES OBTAINED comment_4: IN EARLIER PROPOSALS. ! targnum: 8 name_1: NGC6681-OFFSET descr_1: A,140 pos_1: TBD-EARLY, pos_2: RA-OFF=0S +/- 4.73S, pos_3: DEC-OFF=+0' +/- 1', pos_4: FROM 2 ! targnum: 9 name_1: NGC6093-OFFSET descr_1: A,140 pos_1: TBD-EARLY, pos_2: RA-OFF=0S +/- 4.34S, pos_3: DEC-OFF=+0' +/- 1', pos_4: FROM 3 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 301.000 sequence_1: DEFINE ACQ targname: # config: FOS/BL opmode: ACQ/BINARY aperture: 4.3 sp_element: MIRROR num_exp: 1 time_per_exp: 58S priority: 1 req_1: ONBOARD ACQ FOR 302 ! linenum: 302.000 sequence_1: DEFINE ACQ targname: # config: FOS/BL opmode: ACQ/PEAK aperture: 0.5 sp_element: MIRROR num_exp: 1 time_per_exp: 4.4S priority: 1 param_1: SEARCH-SIZE=4, param_2: SCAN-STEP=0.12 ! linenum: 303.000 sequence_1: USE ACQ targname: NGC1851-OFFSET time_per_exp: X1.0 req_1: ONBOARD ACQ FOR 304; req_2: SELECT 2 OF 303-304 OR req_3: 305-306 OR 307-308; req_4: COND IF UV BRIGHT req_5: OBJECT FOUND; req_6: REQ UPDATE; req_7: CYCLE 3 / 303-308 ! linenum: 304.000 targname: NGC1851-STAR config: FOS/BL opmode: ACCUM aperture: 0.5 sp_element: G160L num_exp: 1 time_per_exp: 6500S priority: 1 req_1: COND IF UV BRIGHT req_2: OBJECT FOUND ! linenum: 305.000 sequence_1: USE ACQ targname: NGC6681-OFFSET time_per_exp: X1.0 req_1: ONBOARD ACQ FOR 306; req_2: COND IF UV BRIGHT req_3: OBJECT FOUND; req_4: REQ UPDATE ! linenum: 306.000 targname: NGC6681-STAR config: FOS/BL opmode: ACCUM aperture: 0.5 sp_element: G160L num_exp: 1 time_per_exp: 6500S priority: 1 req_1: COND IF UV BRIGHT req_2: OBJECT FOUND ! linenum: 307.000 sequence_1: USE ACQ targname: NGC6093-OFFSET time_per_exp: X1.0 req_1: ONBOARD ACQ FOR 308; req_2: COND IF UV BRIGHT req_3: OBJECT FOUND; req_4: REQ UPDATE ! linenum: 308.000 targname: NGC6093-STAR config: FOS/BL opmode: ACCUM aperture: 0.5 sp_element: G160L num_exp: 1 time_per_exp: 6500S priority: 1 req_1: COND IF UV BRIGHT req_2: OBJECT FOUND ! ! end of exposure logsheet ! No scan data records found