! File: 4982C.PROP ! Database: PEPDB ! Date: 23-FEB-1994:13:35:53 coverpage: title_1: UV SPECTRA OF THE BRIGHTEST COMPONENTS OF R136 - EXPO sci_cat: STELLAR ASTROPHYSICS proposal_for: GTO/HRS pi_title: DR. pi_fname: DENNIS pi_mi: C. pi_lname: EBBETS pi_inst: BALL AEROSPACE CORPORATION pi_country: USA pi_phone: (303) 939-5964 keywords_1: SUPERGIANT STAR, WOLF-RAYET STAR, MASS LOSS, LMC 30 keywords_2: DORADUS hours_pri: 3.74 num_pri: 3 pi_position: PRIN MEM TECH STAFF ! end of coverpage abstract: line_1: R136 is the bright central object of the 30 Doradus nebula. line_2: HST images with WFPC and FOC have resolved it into a tight line_3: cluster of several dozen stars, whose brightness and colors line_4: imply hot, massive, early type stars. This proposals defines line_5: GHRS UV spectra of the four brightest members. It is to be line_6: performed during cycle 4, with COSTAR in place, and assuming line_7: that side 1 of the GHRS is reactivated. Grating G140L will be line_8: used to record 1200 - 1760 A with a S/N=30 in the continuum. line_9: The small science aperture will be used to ensure spatial line_10: isolation of the components (components 1&2 are unresolved). line_12: submitted for cycle 4 catalog February 15, 1993 ! ! end of abstract general_form_proposers: lname: EBBETS fname: DENNIS mi: C. inst: BALL AEROSPACE CORPORATION country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: Onboard acq with mirror N1 with return to brightest point. line_2: Peakup and image of LSA with N1. line_3: Peakup in SSA using return to brightest. line_4: Spectra at two central wavelengths, 1350 and 1620. line_5: Standard fp-splits and step-patterns at each. line_6: 20 minutes total exposure at each central wavelength. ! question: 4 section: 1 line_1: ! question: 5 section: 1 line_1: ! question: 7 section: 1 line_1: The spectra will be calibrated and reduced using standard procedures either in line_2: RSDP, or the IDT facilities. line_3: The spectra will be studied in terms of gross spectral line_4: morphologhy, for the purposes of classification. Stellar wind diagnostics such line_5: as terminal velocities and mass loss rates will be derived from comparison of line_6: line profiles with model predictions and experience with similar stars. The line_7: ultraviolet spectral energy distributions will be studied by correcting for now line_8: known effects of galactic and LMC extinction. ! !end of general form text general_form_address: lname: EBBETS fname: DENNIS mi: C. title: DR. category: PI inst: BALL AEROSPACE SYSTEMS GROUP addr_1: GHRS PROJECT AR-1 addr_2: P.O. BOX 1062 city: BOULDER state: CO zip: 80306 country: USA phone: (303) 939-5964 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: R136A1 name_2: HD38268 descr_1: BRIGHTEST COMPONENT OF R136 pos_1: RA = 5H 38M 42.50S +/- 0.1S, pos_2: DEC = -69D 06' 02.8" +/- 1" equinox: 2000 pm_or_par: NO acqpr_1: COMP comment_1: POSITION FROM PC IMAGE MEASURED comment_2: BY ARCHIE BETWEEN A1 AND A2 comment_3: GS PLATE ID = 06B0 fluxnum_1: 1 fluxval_1: V = 10.1 fluxnum_2: 2 fluxval_2: F-CONT(1350) = 2.0 E-13 fluxnum_3: 3 fluxval_3: F-CONT(1620) = 1.3 E-13 ! targnum: 2 name_1: R136A3 descr_1: BRIGHT COMPONENT OF R136 pos_1: R = 0.48", pos_2: PA = 223D, pos_3: FROM 1, equinox: 2000 pm_or_par: NO acqpr_1: COMP comment_7: GS PLATE ID = 06B0 fluxnum_1: 1 fluxval_1: F-CONT(1350) = 2.0 E-13 fluxnum_2: 2 fluxval_2: F-CONT(1620) = 1.3 E-13 ! targnum: 3 name_1: R136A4 descr_1: BRIGHT COMPONENT OF R136 pos_1: R = 0.40", pos_2: PA = 323D, pos_3: FROM 1, equinox: 2000 pm_or_par: NO acqpr_1: COMP comment_7: GS PLATE ID = 06B0 fluxnum_1: 1 fluxval_1: F-CONT(1350) = 1 E-13 fluxnum_2: 2 fluxval_2: F-CONT(1620) = 7.2 E-14 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 10.000 targname: R136A1 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-N1 num_exp: 1 time_per_exp: 9S s_to_n: 10 fluxnum_1: 1 priority: 2 param_1: SEARCH-SIZE=3, param_2: BRIGHT=RETURN, req_1: ONBOARD ACQ FOR 20-170; req_2: CYCLE 4 /10-170; ! linenum: 20.000 targname: R136A1 config: HRS opmode: ACQ/PEAKUP aperture: 2.0 sp_element: MIRROR-N1 num_exp: 1 time_per_exp: 102S s_to_n: 10 fluxnum_1: 1 priority: 2 ! linenum: 30.000 targname: R136A1 config: HRS opmode: IMAGE aperture: 2.0 sp_element: MIRROR-N1 num_exp: 1 time_per_exp: 256.0S s_to_n: 10 fluxnum_1: 1 priority: 2 param_1: NX=16, param_2: NY=16, ! linenum: 50.000 targname: R136A1 config: HRS opmode: ACQ/PEAKUP aperture: 0.25 sp_element: MIRROR-N1 num_exp: 1 time_per_exp: 25S s_to_n: 10 fluxnum_1: 1 priority: 2 ! linenum: 60.000 targname: R136A1 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G140L wavelength: 1350 num_exp: 1 time_per_exp: 1203.2S s_to_n: 25 fluxnum_1: 2 priority: 2 param_1: STEP-PATT=2, param_2: FP-SPLIT=STD, ! linenum: 70.000 targname: R136A1 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G140L wavelength: 1620 num_exp: 1 time_per_exp: 1203.2S s_to_n: 25 fluxnum_1: 3 priority: 2 param_1: STEP-PATT=2, param_2: FP-SPLIT=STD, ! linenum: 100.000 targname: R136A3 config: HRS opmode: ACQ/PEAKUP aperture: 0.25 sp_element: MIRROR-N1 num_exp: 1 time_per_exp: 25S s_to_n: 10 fluxnum_1: 1 priority: 2 ! linenum: 110.000 targname: R136A3 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G140L wavelength: 1350 num_exp: 1 time_per_exp: 1203.2S s_to_n: 25 fluxnum_1: 1 priority: 2 param_1: STEP-PATT=2, param_2: FP-SPLIT=STD, ! linenum: 120.000 targname: R136A3 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G140L wavelength: 1620 num_exp: 1 time_per_exp: 1203.2S s_to_n: 25 fluxnum_1: 2 priority: 2 param_1: STEP-PATT=2, param_2: FP-SPLIT=STD, ! linenum: 150.000 targname: R136A4 config: HRS opmode: ACQ/PEAKUP aperture: 0.25 sp_element: MIRROR-N1 num_exp: 1 time_per_exp: 25S s_to_n: 10 fluxnum_1: 1 priority: 2 ! linenum: 160.000 targname: R136A4 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G140L wavelength: 1350 num_exp: 1 time_per_exp: 1203.2S s_to_n: 25 fluxnum_1: 1 priority: 2 param_1: STEP-PATT=2, param_2: FP-SPLIT=STD, ! linenum: 170.000 targname: R136A4 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G140L wavelength: 1620 num_exp: 1 time_per_exp: 1203.2S s_to_n: 25 fluxnum_1: 2 priority: 2 param_1: STEP-PATT=2, param_2: FP-SPLIT=STD, ! ! end of exposure logsheet ! No scan data records found