! File: 1019C.PROP ! Database: PEPDB ! Date: 15-FEB-1994:22:41:35 coverpage: title_1: THE STELLAR DENSITY DISTRIBUTIONS IN THE CENTERS OF title_2: GALACTIC GLOBULAR CLUSTERS sci_cat: STELLAR POPULATIONS proposal_for: GTO/OS pi_title: DR. pi_fname: JOHN pi_mi: N. pi_lname: BAHCALL pi_inst: INSTITUTE FOR ADVANCED STUDY pi_country: USA pi_phone: (609) 734-8054 keywords_1: GLOBULAR CLUSTER, POPULATION II, BLACK HOLE hours_pri: 0.25 num_pri: 20 wf_pc: X pi_position: DR. JOHN N. BAHCALL off_fname: ALLEN off_lname: ROWE off_title: ASSOC DIR ADM/FIN off_addr_1: INSTITUTE FOR ADVANCED STUDY off_addr_2: OLDEN LANE off_city: PRINCETON off_state: NJ off_zip: 08540 off_country: USA off_phone: (609) 734-8205 off_telex: 837680 ! end of coverpage abstract: line_1: Short exposures will be made of all galactic globular line_2: clusters with distance moduli less than 15.5 mag and line_3: galactic latitude above or below 15 degrees. A search will line_4: be made for cusps in the stellar density distributions and line_5: the colors will be measured for the brightest stars in the line_6: cores of the clusters. ST observations are required in line_7: order to reach the innermost regions of the clusters with line_8: sufficient resolution to separate individual stars. ! ! end of abstract general_form_proposers: lname: BAHCALL fname: JOHN mi: N. inst: INSTITUTE FOR ADVANCED STUDY country: USA ! lname: BAHCALL fname: NETA mi: A. inst: SPACE TELESCOPE SCIENCE INSTITUTE country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: Two exposures will be taken for each object. They need not line_2: be consecutive, but the telescope roll angle should be the line_3: same for both exposures. This series of exposures will give line_4: both colors (V and I) and number densities for the brightest line_5: stars in the central regions of the globular clusters. line_6: Cycle 1 (SV: 1-6 months) plus Cycle 2 (7-18 months) = line_7: Exposures 1-40. The target position should be placed at the line_8: center of one CCD, immaterial which one. ! question: 4 section: 1 line_1: ST observations are required in order to resolve individual line_2: stars in the cores of the globular clusters in sufficient line_3: numbers to permit a determination of the stellar density law. ! question: 5 section: 1 line_1: The telescope roll angle should be the same for both line_2: exposures on a given cluster, although the two exposures on line_3: a cluster need not be consecutive. ! question: 7 section: 1 line_1: Data reduction and analysis will be performed at both the line_2: Institute for Advanced Study and at STScI. ! question: 8 section: 1 line_1: The target position should be placed at the center of one line_2: CCD, immaterial which one. ! question: 10 section: 1 line_1: Computing support and research associates will be available line_2: at both IAS and STScI as required by the science. ! question: 13 section: 1 line_1: Short exposures will be made of all galactic globular line_2: clusters with distance moduli less than 15.5 mag and line_3: galactic latitude above 15 degrees. A search will be made line_4: for cusps in the stellar density distributions and the line_5: colors will be measured for the brightest stars in the cores line_6: of the clusters. Short exposures will be made of all line_7: galactic globular clusters with distance moduli less than line_8: 15.5 mag, estimated core radii less than 1 arc minute, and line_9: galactic latitude above 15 degrees. We will search for a line_10: cusp in the stellar density distribution. ! !end of general form text general_form_address: lname: BAHCALL fname: JOHN mi: N. title: DR. category: PI inst: INSTITUTE FOR ADVANCED STUDY addr_1: OLDEN LANE city: PRINCETON state: NJ zip: 08540 country: USA phone: (609) 734-8054 telex: 837680 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: NGC1851 descr_1: GALACTIC GLOBULAR CLUSTER pos_1: RA = 05H 12M 28.15S +/- 0.1S, pos_2: DEC = -40D 06' 05.4" +/- 1" equinox: 1950 pm_or_par: NO fluxnum_1: 1 fluxval_1: SURF(V) = 14.70 +/- 0.2 ! targnum: 2 name_1: NGC7078 name_2: M15 descr_1: GALACTIC GLOBULAR CLUSTER pos_1: RA = 21H 27M 33.35S +/- 0.1S, pos_2: DEC = +11D 56' 48.8" +/- 1" equinox: 1950 pm_or_par: NO fluxnum_1: 1 fluxval_1: SURF(V) = 15.09 +/- 0.2 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 targname: NGC1851 config: PC opmode: IMAGE aperture: P6 sp_element: F785LP num_exp: 1 time_per_exp: 160S fluxnum_1: 1 priority: 3 param_1: PRE-FLASH=YES req_1: CYCLE 0 / 1-24 ! linenum: 11.000 targname: NGC7078 config: PC opmode: IMAGE aperture: P6 sp_element: F785LP num_exp: 1 time_per_exp: 160S fluxnum_1: 1 priority: 1 param_1: PRE-FLASH=YES req_1: CYCLE 0 ! linenum: 15.000 targname: NGC1851 config: PC opmode: IMAGE aperture: P6 sp_element: F555W num_exp: 1 time_per_exp: 160S fluxnum_1: 1 priority: 3 param_1: PRE-FLASH=YES req_1: CYCLE 0; req_2: SEQ 1,15 NO GAP ! linenum: 24.000 targname: NGC7078 config: PC opmode: IMAGE aperture: P6 sp_element: F555W num_exp: 1 time_per_exp: 160S fluxnum_1: 1 priority: 1 param_1: PRE-FLASH=YES req_1: CYCLE 0; req_2: SEQ 11,24 NO GAP ! ! end of exposure logsheet ! No scan data records found