! File: 1179C.PROP ! Database: PEPDB ! Date: 16-FEB-1994:04:53:07 coverpage: title_1: HYBRID STAR WINDS AND TRANSITION REGIONS title_2: CYCLE 2 sci_cat: STELLAR ASTROPHYSICS sci_subcat: COOL STARS proposal_for: AUG/HRS pi_fname: JEFFREY pi_mi: L. pi_lname: LINSKY pi_inst: COLORADO, UNIVERSITY OF pi_country: USA pi_phone: (303)492-7838 keywords_1: STAR, K III-I, keywords_2: CHROMOSPHERES, CORONAE, WINDS hours_pri: 3.21 num_pri: 1 pi_position: ASTROPHYSICIST ! end of coverpage abstract: line_1: Hybrid-chromosphere stars are G-K bright giants that show line_2: weak high-temperature emission lines and blue-shifted line_3: absorption in low-temperature lines indicating mass loss. line_4: We will determine the temperature distribution and line_5: densities in the outer atmosphere, and measure the outflow line_6: velocity and mass loss rate in a representative hybrid star, line_7: Alpha TrA. We will determine whether the hot plasma line_8: participates in the outflow or whether the wind consists line_9: entirely of cool gas. Atmospheric models will be derived line_10: for both the hot and cool gas using an emission measure line_11: analysis and density-sensitive line ratios. This work will line_12: settle the question of whether the hybrid nature of these line_13: stars is due to two distinct components in the stellar line_14: atmosphere (perhaps one with strong, closed magnetic fields line_15: and the other with weak, open fields) or whether a more line_16: complex geometry is needed to explain the data. ! ! end of abstract general_form_proposers: lname: LINSKY fname: JEFFREY mi: L. inst: COLORADO, UNIVERSITY OF country: USA ! lname: BROWN fname: ALEXANDER inst: JILA, UNIVERSITY OF COLORADO country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: HRS observations of 1 target including five grating settings each. line_2: Observations for the target should be obtained contiguously with few time line_3: gaps, but otherwise the target may be observed at any time.Cycle 2 and 3. ! question: 4 section: 1 line_1: Transition region emission lines are all located in the ultraviolet and line_2: the most useful wind emission features are in the ultraviolet. ! question: 5 section: 1 line_1: The stars are probably variable in their emission. Therefore it is line_2: important to obtain all the observations at one time. Data gaps are line_3: permitted but should be kept small. Try to observe the star in a few line_4: orbits. ! question: 7 section: 1 line_1: We have computer analysis codes at JILA for emission measure line_2: analysis and atmospheric modelling. ! question: 10 section: 1 line_1: Computer analysis codes and postdoctoral research associates. ! question: 12 section: 1 line_1: ! question: 13 section: 1 line_1: This program will study the temperatures, densities, outflow line_2: velocities, and mass loss rates in hybrid-chromosphere stars. In line_3: particular, we will determine whether the hot plasma participates line_4: in the outflow or whether the wind consists entirely of cool gas. line_5: Atmospheric models will be derived of both the hot and cool gas line_6: using an emission measure analysis and density-sensitive line_7: line ratios. ! !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: 1 name_1: HD150798 name_2: ALPHA-TRA descr_1: A,140 pos_1: RA=16H43M21.06S+/-.1S, pos_2: DEC=-68D56'19.9"+/-.1" equinox: 1950 pm_or_par: Y pos_epoch_bj: B pos_epoch_yr: 1950.00 ra_pm_val: 0.001867 ra_pm_unct: 0.000067 dec_pm_val: -0.0340 dec_pm_unct: 0.0010 an_prlx_val: 0.0310 rv_or_z: V=-3 fluxnum_1: 1 fluxval_1: V=1.92 ! targnum: 2 name_1: HD209750 name_2: ALPHA-AQR descr_1: A,138 pos_1: RA=22H05M46.8S+/-.1S, pos_2: DEC=-00D19'11"+/-1" equinox: 2000 pm_or_par: N pos_epoch_bj: B pos_epoch_yr: 1950.00 ra_pm_val: 0.001067 ra_pm_unct: 0.000067 dec_pm_val: -0.0040 dec_pm_unct: 0.0010 an_prlx_val: 0.0120 rv_or_z: V=+8 fluxnum_1: 1 fluxval_1: V=2.96 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 targname: HD150798 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-A2 num_exp: 1 time_per_exp: 3.6S priority: 1 param_1: SEARCH-SIZE=3 param_2: BRIGHT=RETURN req_1: ONBOARD ACQ FOR 1.3; req_2: GROUP 1-7 NO GAP; req_3: CYCLE 2/1-7; req_4: SEQ 1.0-1.3 comment_1: STEP-TIME = 0.4SEC comment_2: FAINT=170 ! linenum: 1.300 targname: HD150798 config: HRS opmode: ACQ/PEAKUP aperture: 2.0 sp_element: MIRROR-A2 num_exp: 1 time_per_exp: 163.2S fluxnum_1: 1 priority: 1 req_1: ONBOARD ACQ FOR 2.0-7.0 comment_1: STEP-TIME=1.6SEC comment_2: CENTER IN LSA AFTER NEW DEFCAL ! linenum: 2.000 targname: WAVE config: HRS opmode: ACCUM aperture: SC2 sp_element: G160M wavelength: 1554 num_exp: 1 time_per_exp: 64S priority: 1 param_1: STEP-PATT=3 req_1: CALIB FOR 3 NO SLEW; req_2: SEQ 2-3 NO GAP comment_1: NO CARROUSEL MOTION BETWEEN 2 AND 3. ! linenum: 3.000 targname: HD150798 config: ^ opmode: ^ aperture: 2.0 sp_element: ^ wavelength: ^ num_exp: 3 time_per_exp: 1200S priority: 1 param_1: STEP-PATT=5 param_2: FP-SPLIT=STD ! linenum: 4.000 targname: WAVE config: ^ opmode: ^ aperture: SC2 sp_element: G200M wavelength: 1900 num_exp: 1 time_per_exp: 32S priority: 1 param_1: STEP-PATT=3 req_1: CALIB FOR 5 NO SLEW; req_2: SEQ 4-5 NO GAP ! linenum: 5.000 targname: HD150798 config: ^ opmode: ^ aperture: 2.0 sp_element: ^ wavelength: ^ num_exp: 2 time_per_exp: 1200S priority: ^ param_1: STEP-PATT=5 param_2: FP-SPLIT=STD ! linenum: 6.000 targname: WAVE config: HRS opmode: ACCUM aperture: SC2 sp_element: ECH-B20 wavelength: 2799 num_exp: 1 time_per_exp: 32S priority: ^ param_1: STEP-PATT=3 req_1: CALIB FOR 7 NO SLEW; req_2: SEQ 6-7 NO GAP ! linenum: 7.000 targname: HD150798 config: HRS opmode: ACCUM aperture: 2.0 sp_element: ECH-B20 wavelength: 2799 num_exp: 2 time_per_exp: 218S priority: ^ param_1: STEP-PATT=7 ! ! end of exposure logsheet ! No scan data records found