! File: 1158C.PROP ! Database: PEPDB ! Date: 16-FEB-1994:04:00:24 coverpage: title_1: CORONAL FLARES -- CYCLE 1 sci_cat: STELLAR ASTROPHYSICS sci_subcat: COOL STARS proposal_for: GTO/HRS pi_title: DR. pi_fname: STEPHEN pi_mi: P. pi_lname: MARAN pi_inst: NASA, GODDARD SPACE FLIGHT CENTER pi_country: USA pi_phone: (301) 286-8607 keywords_1: CORONAE, FLARE STARS, X-RAY STARS, M DWARFS hours_pri: 3.60 num_pri: 1 hrs: X pi_position: SENIOR STAFF SCIENTI ! end of coverpage abstract: line_1: We will observe coronal flares in AU Mic with the HRS. Spectral coverage is line_2: traded in favor of time resolution; a single grating setting in medium line_3: resolution mode, however, allows us to observe emissions from Fe XXI, Fe XII, line_4: and O V, so that the emissions from flare plasmas at 1E7 K, 1.6E6 K, and line_5: 2.5E5 K can be compared. The same setting allows us to monitor bright line_6: lines of O I and C I, so that coronal flares can be related to activity in the line_7: 10,000 K plasma. Groundbased observations will be scheduled to determine the line_8: response of photospheric gas to the coronal flare; radio and X-ray observations line_9: will also be arranged or solicited if possible. ! ! end of abstract general_form_proposers: lname: BRANDT fname: JOHN mi: C. inst: COLORADO, UNIVERSITY OF country: USA ! lname: LINSKY fname: JEFFREY mi: L. inst: COLORADO, UNIVERSITY OF country: USA ! lname: SHINE fname: RICHARD inst: LOCKHEED PALO ALTO RES. LAB. country: USA ! lname: WALTER fname: FREDERICK mi: M. inst: COLORADO, UNIVERSITY OF country: USA ! lname: CARPENTER fname: KENNETH mi: G. inst: COLORADO, UNIVERSITY OF country: USA ! lname: MARAN fname: STEPHEN mi: P. inst: NASA, GODDARD SPACE FLIGHT CENTER country: USA ! lname: WOODGATE fname: BRUCE mi: E. inst: NASA, GODDARD SPACE FLIGHT CENTER country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: The observation consists of a total of 3.6 hours time on target, which may be line_2: interrupted due to orbital events and can then be resumed. Following Mode II line_3: spiral search target acquisition, we simply track AU Mic in the large science line_4: aperture while observing at a single grating setting, making numerous brief line_5: exposures of equal duration in the repeat observation mode. The HRS data line_6: quality checking flight software must be enabled, so that bad data are not line_7: mistaken for flare events. line_9: We want the maximum time resolution compatible with a duty cycle of exposures line_10: vs. readout time of about 80% or more. If this criterion were satisfied, we line_11: would prefer shorter exposures than those (30 sec) shown in the exposure log line_12: sheet. line_14: About once per orbit, the large slit shutter should be closed and a wavelength line_15: calibration observation should be made at the same grating setting. Once line_16: target acquisition is accomplished during a given target pointing, the line_17: carrousel should not be moved. If flare lines are detected with good line_18: statistics, as we believe will occur, we will be looking for velocity changes. ! question: 4 section: 1 line_1: Coronal lines from a flare star are unobservable from the ground. The UV line_2: spectrum contains unique coronal diagnostics, however. Among "existing" line_3: facilities, only the HRS on HST has spectral resolution adequate to detect line_4: these lines, together with the capability of making extended observations so line_5: that there is a good chance of catching a flare in the act. ! question: 5 section: 1 line_1: In order to enable the simultaneous observations of the flare star AU Mic by as line_2: many facilities as possible including the VLA, IUE, the AAT and Chile, we line_3: request that the HST/GHRS observations of AU Mic be scheduled durring the first line_4: week of September (if possible; later in September is an acceptable line_5: alternative) and that, if possible, they be CENTERED on approximetly 04:00 line_6: hours U.T. Realizing that meeting this request exactly would be extreamly line_7: difficult, we give the following guidelines for acceptable deviations: line_9: Our preferred options, highest priorities listed first, are as follows: line_11: 1. Full overlap with VLA and Chile and IUE: line_12: HST observations durring 1:00 - 7:00 UT line_14: 2. Partial overlap with VLA and visibility to Chile and/or AAT and IUE: line_15: HST start time no ealier than 23:00 UT on preceding day line_16: HST end time no later than 11:00 UT line_18: 3. No overlap with VLA, but visible to AAT and IUE: line_19: HST observations during: 8:00 - 17:00 UT line_21: 4. No overlap with the ground, but simultaneous with IUE: line_22: HST observations during: 17:00 - 23:00 UT ! question: 5 section: 2 line_1: 5. HST observations anytime in Cycle 1, reguardless of ability to coordinaye line_2: with other observatories (i.e. do NOT cancel HST observations if they can not line_3: be coordinated). ! question: 7 section: 1 line_1: Shine, Walter, and Carpenter will assist in coadding the observations offline line_2: to develop optimum light curves in the various flare lines, to derive line_3: statistical parameters of the variations of each line, and to determine line_4: absolute fluxes in the lines. line_6: SDAS, institutional facilities at GSFC and CASA/Boulder, and perhaps also at line_7: Lockheed Palo Alto Research Laboratories, will be used. ! question: 8 section: 1 line_1: We will request coordinated optical (spectral and photometric) and radio line_2: observations from the Southern Hemisphere as soon as ST ScI advises us as to line_3: the preliminary observing schedule. X-ray observations will be requested, if line_4: feasible. ! question: 10 section: 1 line_1: We expect to be supported through the post-launch science budget of the HRS line_2: Principal Investigator, Dr. J. C. Brandt. GSFC will also provide the services line_3: of the proposal PI and Co-Is who are GSFC employees at the time, as well as line_4: miscellaneous institutional facilities. ! question: 12 section: 1 line_1: Kenneth Carpenter(301 286-3453) assisted the P.I. in preparing the phase line_2: II exposure forms. ! question: 13 section: 1 line_1: Observation of coronal lines and coronal flares in the UV, together with lines line_2: from cooler plasma. Investigation of stellar flares and comparison with solar line_3: flares. Supporting groundbased observations in the optical and radio and line_4: possibly correlated X-ray observations will be arranged. ! !end of general form text general_form_address: lname: WALTER fname: FREDERICK mi: M. inst: UNIV OF COLORADO/LASP addr_1: CAMPUS BOX 391 city: BOULDER state: CO zip: 80309 country: USA phone: (303) 492-4062 ! lname: WOODGATE fname: BRUCE mi: E. inst: NASA, GODDARD SPACE FLIGHT CENTER addr_1: CODE 681 city: GREENBELT state: MD zip: 20771 country: USA phone: (301) 286-5401 ! lname: MARAN fname: STEPHEN mi: P. title: DR. category: PI inst: NASA, GODDARD SPACE FLIGHT CENTER addr_1: CODE 680 city: GREENBELT state: MD zip: 20771 country: USA phone: (301) 286-8607 ! lname: SHINE fname: RICHARD inst: LOCKHEED, PALO ALTO RESEARCH LAB. addr_1: 3251 HANOVER ST. city: PALO ALTO state: CA zip: 94304 country: USA phone: (415) 424-2858 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: AU-MIC name_2: GL803 name_3: GSC7457-0641 descr_1: M 1.6E V STAR; FLARE STAR pos_1: RA = 20H 45M 08.95S +/- 0.3", pos_2: DEC = -31D 20' 17.8" +/- 0.3" equinox: 2000 pm_or_par: Y pos_epoch_bj: B pos_epoch_yr: 1974.50 ra_pm_val: 0.018067 ra_pm_unct: 0.001400 dec_pm_val: -0.3480 dec_pm_unct: 0.0210 comment_1: COORDINATES ARE FROM GUIDE STAR comment_2: CATALOG fluxnum_1: 1 fluxval_1: V = 8.75 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 2.000 sequence_1: DEFINE sequence_2: STEVE targname: WAVE config: HRS opmode: ACCUM aperture: SC2 sp_element: G160M wavelength: 1360 num_exp: 1 time_per_exp: 10S priority: # param_1: DOPPLER=OFF, param_2: STEP-PATT=2 req_1: SEQ 2-4.0 NO GAP; CALIB FOR 3 NO SLEW ! linenum: 2.500 sequence_1: ^ sequence_2: ^ targname: ^ config: ^ opmode: RAPID aperture: ^ sp_element: ^ wavelength: ^ num_exp: 1 time_per_exp: 10S priority: ^ param_1: SAMPLE-TIME=0.4 req_1: CALIB FOR 3 NO SLEW ! linenum: 3.000 sequence_1: ^ targname: # config: ^ opmode: RAPID aperture: 2.0 sp_element: ^ wavelength: ^ num_exp: 1 time_per_exp: 30M priority: ^ param_1: ^ ! linenum: 4.000 sequence_1: ^ targname: WAVE config: ^ opmode: ACCUM aperture: SC2 sp_element: ^ wavelength: ^ num_exp: 1 time_per_exp: 10S priority: ^ param_1: DOPPLER=OFF, param_2: STEP-PATT=2 req_1: CALIB FOR 3 NO SLEW ! linenum: 4.700 targname: AU-MIC config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-N2 num_exp: 1 time_per_exp: 5S priority: 1 param_1: FAINT=240.0, param_2: SEARCH-SIZE=5, req_1: CYCLE 1/4.7-11; req_2: ONBOARD ACQ FOR 4.8; req_3: SEQ 4.7-11.0 NO GAP; req_4: AT 4-SEP-91 +/- 4D comment_1: GS CATALOG SHOW MAG. 10.15 STAR comment_2: 0.54 TIME SEC EAST AND 8.7 comment_3: ARCSEC SOUTH OF TARGET. comment_4: EXPECT ABOUT 1100 CTS/200 MS FOR comment_5: AU MIC IN MODE N2 ! linenum: 4.800 targname: AU-MIC config: HRS opmode: ACQ/PEAKUP aperture: 2.0 sp_element: MIRROR-N2 num_exp: 1 time_per_exp: 9.2S priority: 1 req_2: ONBOARD ACQ FOR 5-11; comment_1: CENTER IN LSA AFTER NEW DEFCAL ! linenum: 5.000 targname: AU-MIC config: HRS opmode: IMAGE aperture: 2.0 sp_element: MIRROR-N2 num_exp: 1 time_per_exp: 96.8S priority: 1 comment_1: TAKE MAP AFTER CENTERING comment_2: USE 200 MSEC INTEGRATIONS ! linenum: 5.500 sequence_1: USE sequence_2: STEVE targname: AU-MIC priority: 1 comment_1: SEE GENERAL FORM SECTION 5 FOR comment_2: CRITICAL SCHEDULING INFORMATION. ! linenum: 6.000 sequence_1: USE sequence_2: STEVE targname: AU-MIC priority: 1 ! linenum: 7.000 sequence_1: USE sequence_2: STEVE targname: AU-MIC priority: 1 ! linenum: 8.000 sequence_1: USE sequence_2: STEVE targname: AU-MIC priority: 1 ! linenum: 9.000 sequence_1: USE sequence_2: STEVE targname: AU-MIC priority: 1 ! linenum: 10.000 sequence_1: USE sequence_2: STEVE targname: AU-MIC priority: 1 ! linenum: 11.000 sequence_1: USE sequence_2: STEVE targname: AU-MIC priority: 1 ! ! end of exposure logsheet ! No scan data records found