! File: 4184C.PROP ! Database: PEPDB ! Date: 20-FEB-1994:12:27:42 coverpage: title_1: SEARCH FOR HOT PLASMAS IN THE OUTER ATMOSPHERES OF K GIANTS title_2: CYCLE LATER OBSERVATIONS sci_cat: STELLAR ASTROPHYSICS sci_subcat: COOL STARS proposal_for: GTO/HRS cont_id: 1177 pi_fname: JEFFREY pi_mi: L. pi_lname: LINSKY pi_inst: COLORADO, UNIVERSITY OF pi_country: USA pi_phone: (303)492-7838 keywords_1: K III STARS, K I STARS, GIANTS, SUPERGIANTS, keywords_2: CHROMOSPHERES, CORONAE hours_pri: 4.08 num_pri: 2 pi_position: ASTROPHYSICIST ! end of coverpage abstract: line_1: We will measure the amount of plasma hotter than 10,000 K line_2: (or establish small upper limits) in the outer atmospheres line_3: of K giant stars now thought not to have for hot material. line_4: A second goal is to derive models of the hot plasma in the line_5: transition regions of early K giants with very low heating line_6: rates due to slow rotation and very weak magnetic field line_7: generation. We will search for emission lines of C III, line_8: Si III, C IV, Si IV, and N V in very deep specta. Upper line_9: limits to the strength of these emission lines will place line_10: stringent constraints on possible nonradiative heating line_11: processes. Observations of weak intersystem lines will line_12: provide estimates of the electron density needed for line_13: atmospheric modeling. We will attempt to determine whether line_14: the hot plasma (and the required heating) are global or line_15: isolated to small regions on the star due to magnetic fields line_16: or stochastic heating processes. Two of these stars are line_17: Hyades Cluster giants, one with no evidence of hot lines line_18: and the other with strong emission lines that may be due line_19: to the presence of a close binary component. ! ! end of abstract general_form_proposers: lname: LINSKY fname: JEFFREY mi: L. inst: COLORADO, UNIVERSITY OF country: USA ! lname: BROWN fname: ALEXANDER inst: COLORADO, UNIVERSITY OF country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: We request HRS observations of 5 stars with various grating settings for each. line_2: The observations for one target (Alpha Boo) are scheduled for convenience line_3: under a companion program entitled "Fluorescent Processes in the Atmospheres of line_4: K Giant Stars." line_6: Cycle 2 and 3. ! question: 5 section: 1 line_1: One target (Alpha Boo = HD 124897) is in common with another GTO program line_2: "Fluorescent Processes in the Atmospheres of K Giants." Since both programs line_3: require the observations requested here for analysis and the star is probabaly line_4: variable, we have scheduled the observations for both programs together under line_5: the Fluorescent Processes program. ! question: 6 section: 1 line_1: We request a full data set at one time (see question 5). ! question: 7 section: 1 line_1: We have data reduction software and computer codes for the emission line_2: measure analysis of the hot plasma that may be detected in the outer line_3: atmospheres of these stars. ! question: 10 section: 1 line_1: Computer codes and postdoctoral reserarch associates to be line_2: supported by GTO budget. ! question: 12 section: 1 line_1: The total observing time includes overhead of 345 seconds for each line_2: use of the KG sequence. ! question: 13 section: 1 line_1: The goal of this program is to search for evidence of any plasma hotter line_2: than 10,000 K in the outer atmospheres of K giant stars for which no such line_3: evidence presently exists. We will search for evidence of emission lines of C line_4: III, Si III, C IV, Si IV, and N V in very deep HRS spectra. Upper limits to line_5: the strength of these emission lines will place stringent constraints on the line_6: amount of hot plasma in the outer atmospheres of these stars and thus on the line_7: nonradiative heating processes. ! !end of general form text general_form_address: lname: LINSKY fname: JEFFREY mi: L. category: PI inst: JILA, UNIVERSITY OF COLORADO addr_1: CAMPUS BOX 440 city: BOULDER state: CO zip: 80309 country: USA phone: 303-492-7838 telex: 755842JILA ! ! end of general_form_address records fixed_targets: targnum: 5 name_1: HD28305 name_2: EPSILON-TAU descr_1: A,140 pos_1: RA=04H25M41.585S+/-.1S, pos_2: DEC=+19D04'16.36"+/-.1" equinox: 1950 pm_or_par: Y pos_epoch_bj: B pos_epoch_yr: 1950.00 ra_pm_val: 0.007180 ra_pm_unct: 0.000067 dec_pm_val: -0.0360 dec_pm_unct: 0.0010 an_prlx_val: 0.0200 rv_or_z: V=+39 fluxnum_1: 1 fluxval_1: V=3.53 ! targnum: 8 name_1: HD28307 name_2: THETA1-TAU descr_1: A,140 pos_1: RA=04H25M42.882S+/-.1S, pos_2: DEC=+15D51'10.15"+/-.1" equinox: 1950 pm_or_par: Y pos_epoch_bj: B pos_epoch_yr: 1950.00 ra_pm_val: 0.006927 ra_pm_unct: 0.000067 dec_pm_val: -0.0260 dec_pm_unct: 0.0010 an_prlx_val: 0.0290 rv_or_z: V=+40 fluxnum_1: 1 fluxval_1: V=3.80 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 41.000 targname: HD28305 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-N2 num_exp: 1 time_per_exp: 1.8S priority: 3 param_1: SEARCH-SIZE=3 param_2: BRIGHT=RETURN req_1: ONBOARD ACQ FOR 41.3; req_2: GROUP 41-47 NO GAP; req_3: CYCLE 4/41-47; req_4: SEQ 41.0-41.3 comment_1: STEP TIME = 0.2S comment_2: FAINT=5000 ! linenum: 41.300 targname: HD28305 config: HRS opmode: ACQ/PEAKUP aperture: 2.0 sp_element: MIRROR-N2 num_exp: 1 time_per_exp: 73.6S fluxnum_1: 1 priority: 3 req_1: ONBOARD ACQ FOR 42-47 comment_1: STEP-TIME=1.6SEC comment_2: CENTER IN LSA AFTER NEW DEFCAL ! linenum: 42.000 targname: WAVE config: ^ opmode: ACCUM aperture: SC2 sp_element: G200M wavelength: 1900 num_exp: 1 time_per_exp: 32S priority: ^ param_1: STEP-PATT=3 req_1: CALIB FOR 42.5 NO SLEW; req_2: SEQ 42.0-42.5 NO GAP ! linenum: 42.500 targname: HD28305 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G200M wavelength: 1900 num_exp: 2 time_per_exp: 244.8S priority: ^ param_1: STEP-PATT=5 ! linenum: 43.000 targname: WAVE config: ^ opmode: ACCUM aperture: SC2 sp_element: G270M wavelength: 2340 num_exp: 1 time_per_exp: 32S priority: ^ param_1: STEP-PATT=3 req_1: CALIB FOR 43.5 NO SLEW; req_2: SEQ 43.0-43.5 NO GAP ! linenum: 43.500 targname: HD28305 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G270M wavelength: 2340 num_exp: 2 time_per_exp: 300S priority: ^ param_1: STEP-PATT=5 ! linenum: 46.900 targname: WAVE config: HRS opmode: ACCUM aperture: SC2 sp_element: G160M wavelength: 1304 num_exp: 1 time_per_exp: 32S priority: 2 param_1: STEP-PATT=3 req_1: CALIB FOR 47.0 NO SLEW; req_2: SEQ 46.9-47.0 NO GAP ! linenum: 47.000 targname: HD28305 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G160M wavelength: 1304 num_exp: 2 time_per_exp: 244.8S priority: 2 param_1: STEP-PATT=5 ! linenum: 71.000 targname: HD28307 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-N2 num_exp: 1 time_per_exp: 1.8S priority: 3 param_1: SEARCH-SIZE=3 param_2: BRIGHT=RETURN req_1: ONBOARD ACQ FOR 71.3; req_2: GROUP 71-77 NO GAP; req_3: CYCLE 4/71-77; req_4: SEQ 71.0-71.3 comment_1: STEP TIME = 0.2S ! linenum: 71.300 targname: HD28307 config: HRS opmode: ACQ/PEAKUP aperture: 2.0 sp_element: MIRROR-N2 num_exp: 1 time_per_exp: 73.6S fluxnum_1: 1 priority: 3 req_1: ONBOARD ACQ FOR 72-77 comment_1: STEP-TIME=1.6SEC comment_2: CENTER IN LSA AFTER NEW DEFCAL ! linenum: 72.000 targname: WAVE config: ^ opmode: ACCUM aperture: SC2 sp_element: G200M wavelength: 1900 num_exp: 1 time_per_exp: 32S priority: ^ param_1: STEP-PATT=3 req_1: CALIB FOR 72.5 NO SLEW; req_2: SEQ 72.0-72.5 NO GAP ! linenum: 72.500 targname: HD28307 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G200M wavelength: 1900 num_exp: 2 time_per_exp: 244.8S priority: ^ param_1: STEP-PATT=5 ! linenum: 73.000 targname: WAVE config: ^ opmode: ACCUM aperture: SC2 sp_element: G270M wavelength: 2340 num_exp: 1 time_per_exp: 32S priority: ^ param_1: STEP-PATT=3 req_1: CALIB FOR 73.5 NO SLEW; req_2: SEQ 73.0-73.5 NO GAP ! linenum: 73.500 targname: HD28307 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G270M wavelength: 2340 num_exp: 3 time_per_exp: 272S priority: ^ param_1: STEP-PATT=5 ! linenum: 74.900 targname: WAVE config: HRS opmode: ACCUM aperture: SC2 sp_element: G160M wavelength: 1550 num_exp: 1 time_per_exp: 32S priority: 2 param_1: STEP-PATT=3 req_1: CALIB FOR 75.1 NO SLEW; req_2: SEQ 74.9-75.1 NO GAP ! linenum: 75.100 targname: HD28307 config: ^ opmode: ^ aperture: 2.0 sp_element: G160M wavelength: 1550 num_exp: 3 time_per_exp: 300S priority: ^ param_1: STEP-PATT=5 ! linenum: 75.900 targname: WAVE config: HRS opmode: ACCUM aperture: SC2 sp_element: G160M wavelength: 1402 num_exp: 1 time_per_exp: 60.8S priority: 2 param_1: STEP-PATT=3 req_1: CALIB FOR 76 NO SLEW; req_2: SEQ 75.9-76.0 NO GAP ! linenum: 76.000 targname: HD28307 config: ^ opmode: ^ aperture: 2.0 sp_element: G160M wavelength: 1402 num_exp: 3 time_per_exp: 300S priority: ^ param_1: STEP-PATT=5 ! linenum: 76.900 targname: WAVE config: HRS opmode: ACCUM aperture: SC2 sp_element: G160M wavelength: 1304 num_exp: 1 time_per_exp: 32S priority: 2 param_1: STEP-PATT=3 req_1: CALIB FOR 77.0 NO SLEW; req_2: SEQ 76.9-77.0 NO GAP ! linenum: 77.000 targname: HD28307 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G160M wavelength: 1304 num_exp: 4 time_per_exp: 300S priority: 2 param_1: STEP-PATT=5 ! ! end of exposure logsheet ! No scan data records found