! Hubble Space Telescope Cycle 5 (1995) Phase II Proposal Template ! $Id: 6076,v 7.1 1996/06/19 15:32:10 pepsa Exp $ ! ! Refer to the HST Phase II Proposal Instructions to fill this out ! ! Anything after a "!" is ignored, and may be deleted ! ! All keywords with multiple entries are comma delimited except the ! Visit_Requirements and Special_Requirements keywords which can be ! delimited with carriage returns or semi-colons, but not commas ! ! For help call your Program Coordinator: Dustin Manning ! Phone: 410 338-4456 , E-mail: manning@stsci.edu ! ! This partially completed template was generated from a Phase I proposal. ! Date generated: Sun Dec 18 19:12:02 EST 1994 ! Proposal_Information ! Section 4 Title: Xi Boo A: Structure and Non-Thermal Heating Proposal_Category: GO Scientific_Category: Cool Stars Cycle: 5 Investigators PI_name: Dr. Carole Jordan PI_Institution: University of Oxford CoI_Name: Andrew McMurry CoI_Institution: University of Oxford Contact: Y ! Y or N (designate at most one contact) CoI_Name: Neil Griffiths CoI_Institution: University of Oxford Contact: N ! Y or N (designate at most one contact) CoI_Name: Dr. HongChao Pan CoI_Institution: University of Oxford Abstract: ! Free format text (please update) Xi Boo A is a G8 V star which is substantially more active than the Sun. It is an ideal target for the GHRS instrument which can make observations of density sensitive emission line ratios and line widths that are impossible with IUE. We have used our existing observations of xi Boo A, made with IUE, the PSPC and WFC instruments on ROSAT, and EUVE, to make models of the atmosphere from the photosphere to the corona, using the MULTI radiative transfer code to model the chromosphere. Discrimination between these requires an improved measurement of the electron density. Comparisons of transition region and coronal pressures provide constraints on the geometry, including non-homogeneity. Line widths enter the turbulent pressure and non-thermal energy density, and are required for comparisons between empirical energy losses and specific heating mechanisms. Xi Boo A has a measured magnetic field and follows a variety of field, rotation and line flux correlations found from wider studies of main-sequence stars.These can be understood only by elucidating the physics within a given stellar atmosphere. Xi Boo B can be observed separately to aid the interpretation of X-ray and EUVE fluxes. We will also apply for observing time with the HRI on ROSAT. Questions ! Free format text (please update) Observing_Description: The observations requested are summarized in the Table below (c/f Table 3 of Phase I proposal). The tabulated wavelength is the centre of the passband required. The ions of interest for each exposure are given in decreasing order of priority. We acquire xi Boo A on Side 2, carry out AQU/PEAKUP, use G160M to observe fluxes and widths of lines of Si II, Si III] and CI], and the profiles of the Mg II lines with ECH-B. We then move to Side 1, use G140M to resolve lines of interest and to obtain the widths of the stronger lines, and G140L to obtain the fluxes in a wide range of lines, to determine the emission measure distribution. The observations will also give flux ratios from which the electron density can be determined. Because of the limit on the number of orbits at each visit, a second visit to xi Boo A is needed. We will again acquire on Side 2, and there is time to observe the Mg II profiles with ECH-B and the Si II lines with G160M before moving to Side 1. The remainder of the G140M exposures can then be made, and there is also time to repeat the G140L exposures, to check for flux variations between visits. (Observations with IUE show rotationally modulated variations of up to 20 percent). The exposure times for low and medium resolution observations have been calculated to give a S/N of about 20 on the weakest lines of interest. The ECH-B exposures will give a S/N of 20 in the region of the profiles which best constrain the chromospheric models. In the G140L and G140M exposures centered at 1293 and 1207 Angstroms, respectively, the geocoronal H Lyman alpha line will be the strongest feature; interstellar absorption will remove the core of the stellar line. In the G140M exposure centered at 1307 Angstroms the OI resonance lines will be the strongest feature, but the weaker Si III lines are the prime target. At the third visit, xi Boo B will be acquired on Side 2, and observations made of the Mg II profiles. We will then move to Side 1 where only low resolution spectra are proposed, to measure the fluxes. The exposure times have been calculated so that the most important line (usually the strongest) has a S/N of 20. The time per exposure allows for FP-SPLIT = STD. The fluxes in all the lines (xi Boo A plus B) are known from observations with IUE, and estimates of the contributions from the two stars are also available. Approximate line widths are available from IUE. The Large Science Aperture is requested throughout. The aquisitions should be made with the N2 mirror on Side 2. Summary of Observations: wave label grating length exp(S) lines ========================================================= Visit 1 - Xi Boo A 10 G160M 1812 652.8 Si II 11 G160M 1894 4243.2 Si III], C III] 12 ECH-B 2800 108.8 Mg II 13 G160M 1981 2937.6 C I] 30 G140M 1207 1088.0 Si III 31 G140M 1405 1740.8 Si IV, O IV] 32 G140M 1307 3590.4 Si III, O I, Si II 33 G140L 1593 217.6 C IV, He II, C I 34 G140L 1293 435.2 C III, N V, Si III Visit 2 - Xi Boo A 55 ECH-B 2800 108.8 Mg II 56 G160M 1812 435.2 Si II 60 G140L 1293 435.2 C III, N V, Si III 61 G140L 1593 217.6 C IV, He II, C I 62 G140M 1547 2828.8 C IV 63 G140M 1345 1088.0 C II, O I] Visit 3 - Xi Boo B 110 ECH-B 2800 217.6 Mg II 130 G140L 1293 2611.2 N V, C II, Si IV, SI III 131 G140L 1593 2176.0 C IV, He II, Si II 132 G140L 1757 2611.2 Si II, Si III] ========================================================= Real_Time_Justification: None Calibration_Justification: None Additional_Comments: We will apply for observations with the HRI on ROSAT, to spatially resolve the two stars in the X-ray band. Observations with ASCA will be made by J. Drake, with whom we are negotiating a collaboration. !=============================================================== Fixed_Targets ! Section 5.1 Target_Number: 1 Target_Name: HD131156A Alternate_Names: XI-BOO-A Description: STAR, G V-IV Position: RA=14H 51M 23.28S +/- 0.1S, DEC=+19D 06' 4.1" +/- 1.0" Equinox: 2000 RV_or_Z: V=4 RA_PM: 0.0096 ! Units are seconds of time per year Dec_PM: -0.098 ! Units are seconds of arc per year Epoch: 2000 Annual_Parallax: Flux: V=4.55 ! Include at least V and B-V B-V=0.72 TYPE=G8V F-LINE(1817) = 4.7 +/- 0.4 E-12 W-LINE(1817) = 0.15 +/- 0.06 F-CONT(1830) = 2.5 +/- 0.3 E-13 F-LINE(1892) = 3.0 +/- 0.3 E-13 W-LINE(1892) = 0.20 +/- 0.05 F-CONT(1905) = 3.6 +/- 0.4 E-13 F-LINE(1994) = 2.8 +/- 0.3 E-13 W-LINE(1994) = 0.13 +/- 0.07 F-CONT(2007) = 1.4 +/- 0.14 E-12 F-LINE(2796) = 2.8 +/- 0.14 E-11 W-LINE(2796) = 0.52 +/- 0.07 F-CONT(2785) = 5.0 +/- 0.5 E-12 ! F-LINE(1548) = 9.7 +/- 0.9 E-13 ! W-LINE(1548) = 0.34 +/ 0.03 F-LINE(1302) = 1.4 +/- 0.14 E-12 W-LINE(1302) = 0.07 +/- 0.03 F-LINE(1394) = 7.4 +/- 0.7 E-13 W-LINE(1394) = 0.26 +/- 0.05 F-LINE(1336) = 8.5 +/- 0.8 E-13 W-LINE(1336) = 0.27 +/- 0.04 F-LINE(1216) = 1.1 E-12 W-LINE(1216) = 0.47 Comments: The Lyman Alpha flux is dominated by Geocoronal emmission. !--------------------------------------------------------------- Target_Number: 2 Target_Name: HD131156B Alternate_Names: XI-BOO-B Description: STAR, K V-IV Position: R = 6.7", PA=39.5D, FROM 1 Equinox: 2000 Flux: TYPE=K4V, ! Include at least V and B-V V=6.6, B-V=1.17 F-LINE(2796) = 6.9 +/- 0.7 E-12 W-LINE(2796) = 0.52 +/- 0.07 ! F-LINE(1548) = 1.4 +/- 0.2 E-13 ! W-LINE(1548) = 0.34 +/- 0.03 ! F-LINE(1817) = 8.0 +/- 2.0 E-13 ! W-LINE(1817) = 0.15 +/- 0.06 ! F-LINE(1216) = 1.1 E-12 ! W-LINE(1216) = 0.47 Comments: The position offset of Xi Boo B will be confirmed when we are told the date that the observations are scheduled for. The Lyman Alpha flux is dominated by Geocoronal emmission. !=============================================================== ! This is a template for a single visit containing a single exposure ! Repeat exposure and visit blocks as needed Visits ! Section 6 Visit_Number: 1 Visit_Requirements: ! Section 7.1 On_Hold_Comments: Visit_Comments: Exposure_Number: 1 Target_Name: HD131156A Config: HRS Opmode: ACQ Aperture: 2.0 Sp_Element: MIRROR-N2 Wavelength: Optional_Parameters: SEARCH-SIZE = 3 Number_of_Iterations: 1 Time_Per_Exposure: 5S Special_Requirements: ONBOARD ACQuisition FOR 2 Comments: STEP-TIME = 0.2S Exposure_Number: 2 Target_Name: HD131156A Config: HRS Opmode: ACQ/PEAKUP Aperture: 2.0 Sp_Element: MIRROR-N2 Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 20.4S Special_Requirements: ONBOARD ACQuisition FOR 10-13 Comments: STEP-TIME = 0.2S Exposure_Number: 10 Target_Name: HD131156A Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G160M Wavelength: 1812 Optional_Parameters: FP-SPLIT = STD Number_of_Iterations: 1 Time_Per_Exposure: 652.8S ! 6 x 108.8 Special_Requirements: ! Section 7.2 Exposure_Number: 11 Target_Name: HD131156A Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G160M Wavelength: 1894 Optional_Parameters: FP-SPLIT = STD Number_of_Iterations: 3 Time_Per_Exposure: 1414.4S ! 13 x 108.8 Special_Requirements: ! Section 7.2 Exposure_Number: 12 Target_Name: HD131156A Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: ECH-B Wavelength: 2800 Optional_Parameters: FP-SPLIT = STD Number_of_Iterations: 1 Time_Per_Exposure: 108.8S Special_Requirements: Exposure_Number: 13 Target_Name: HD131156A Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G160M Wavelength: 1981 Optional_Parameters: FP-SPLIT = STD Number_of_Iterations: 3 Time_Per_Exposure: 979.2S ! 9 x 108.8 Special_Requirements: ! Section 7.2 Exposure_Number: 30 Target_Name: HD131156A Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140M Wavelength: 1207 Optional_Parameters: FP-SPLIT = STD Number_of_Iterations: 1 Time_Per_Exposure: 1088S ! 10 x 108.8 Special_Requirements: ! Section 7.2 Exposure_Number: 31 Target_Name: HD131156A Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140M Wavelength: 1405 Optional_Parameters: FP-SPLIT = STD Number_of_Iterations: 2 Time_Per_Exposure: 870.4S ! 8 x 108.8 Special_Requirements: ! Section 7.2 Exposure_Number: 32 Target_Name: HD131156A Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140M Wavelength: 1307 Optional_Parameters: FP-SPLIT = STD Number_of_Iterations: 3 Time_Per_Exposure: 1196.8S ! 11 x 108.8 Special_Requirements: ! Section 7.2 Exposure_Number: 33 Target_Name: HD131156A Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140L Wavelength: 1593 Optional_Parameters: FP-SPLIT = STD Number_of_Iterations: 1 Time_Per_Exposure: 217.6S ! 2 x 108.8 Special_Requirements: ! Section 7.2 Exposure_Number: 34 Target_Name: HD131156A Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140L Wavelength: 1293 Optional_Parameters: FP-SPLIT = STD Number_of_Iterations: 1 Time_Per_Exposure: 435.2S ! 4 x 108.8 Special_Requirements: ! Section 7.2 Comments: !=============================================================== Visit_Number: 2 Visit_Requirements: ! Section 7.1 On_Hold_Comments: Visit_Comments: Exposure_Number: 51 Target_Name: HD131156A Config: HRS Opmode: ACQ Aperture: 2.0 Sp_Element: MIRROR-N2 Wavelength: Optional_Parameters: SEARCH-SIZE = 5 Number_of_Iterations: 1 Time_Per_Exposure: 5S Special_Requirements: ONBOARD ACQuisition FOR 52 Comments: STEP-TIME = 0.2S Exposure_Number: 52 Target_Name: HD131156A Config: HRS Opmode: ACQ/PEAKUP Aperture: 2.0 Sp_Element: MIRROR-N2 Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 20.4S Special_Requirements: ONBOARD ACQuisition FOR 55-56 Comments: STEP-TIME = 0.2S Exposure_Number: 55 Target_Name: HD131156A Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: ECH-B Wavelength: 2800 Optional_Parameters: FP-SPLIT = STD Number_of_Iterations: 1 Time_Per_Exposure: 108.8S Special_Requirements: Exposure_Number: 56 Target_Name: HD131156A Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G160M Wavelength: 1812 Optional_Parameters: FP-SPLIT = STD Number_of_Iterations: 1 Time_Per_Exposure: 435.2S ! 4 x 108.8 Special_Requirements: ! Section 7.2 Exposure_Number: 60 Target_Name: HD131156A Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140L Wavelength: 1293 Optional_Parameters: FP-SPLIT = STD Number_of_Iterations: 1 Time_Per_Exposure: 435.2S ! 4 x 108.8 Special_Requirements: ! Section 7.2 Exposure_Number: 61 Target_Name: HD131156A Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140L Wavelength: 1593 Optional_Parameters: FP-SPLIT = STD Number_of_Iterations: 1 Time_Per_Exposure: 217.6S ! 2 x 108.8 Special_Requirements: ! Section 7.2 Exposure_Number: 62 Target_Name: HD131156A Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140M Wavelength: 1547 Optional_Parameters: FP-SPLIT = STD Number_of_Iterations: 2 Time_Per_Exposure: 1414.4S ! 13 x 108.8 Special_Requirements: ! Section 7.2 Exposure_Number: 63 Target_Name: HD131156A Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140M Wavelength: 1345 Optional_Parameters: FP-SPLIT = STD Number_of_Iterations: 1 Time_Per_Exposure: 1088S ! 10 x 108.8 Special_Requirements: ! Section 7.2 !=============================================================== Visit_Number: 3 Visit_Requirements: ! Section 7.1 On_Hold_Comments: Visit_Comments: Exposure_Number: 101 Target_Name: HD131156B Config: HRS Opmode: ACQ Aperture: 2.0 Sp_Element: MIRROR-N2 Wavelength: Optional_Parameters: SEARCH-SIZE = 5 Number_of_Iterations: 1 Time_Per_Exposure: 5S Special_Requirements: ONBOARD ACQuisition FOR 102 Comments: STEP-TIME = 0.2S Exposure_Number: 102 Target_Name: HD131156B Config: HRS Opmode: ACQ/PEAKUP Aperture: 2.0 Sp_Element: MIRROR-N2 Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 20.4S Special_Requirements: ONBOARD ACQuisition FOR 110 Comments: STEP-TIME = 0.2S Exposure_Number: 110 Target_Name: HD131156B Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: ECH-B Wavelength: 2800 Optional_Parameters: FP-SPLIT = STD Number_of_Iterations: 1 Time_Per_Exposure: 217.6S ! 2 x 108.8 Special_Requirements: Exposure_Number: 130 Target_Name: HD131156B Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140L Wavelength: 1293 Optional_Parameters: FP-SPLIT = STD Number_of_Iterations: 2 Time_Per_Exposure: 1305.6S ! 12 x 108.8 Special_Requirements: ! Section 7.2 Exposure_Number: 131 Target_Name: HD131156B Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140L Wavelength: 1593 Optional_Parameters: FP-SPLIT = STD Number_of_Iterations: 2 Time_Per_Exposure: 1088S ! 10 x 108.8 Special_Requirements: ! Section 7.2 Exposure_Number: 132 Target_Name: HD131156B Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140L Wavelength: 1757 Optional_Parameters: FP-SPLIT = STD Number_of_Iterations: 2 Time_Per_Exposure: 1305.6S ! 12 x 108.8 Special_Requirements: ! Section 7.2 Comments: !=============================================================== Data_Distribution ! Defaults indicated; change if desired Medium: 8MM ! 8MM or 6250BPI or 1600BPI Blocking_Factor: 10 ! 10 or 1 ! Only astronomers with very old 9- ! track tape drives should consider ! a blocking factor of 1 Ship_To: PI_Address ! STSCI or PI_Address or ! PI Address from Phase I is: ! ! Department of Physics (Theoreti ! cal Physics),1, Keble Road , ! Oxford OX1 3NP,UK ! Ship_Via: UPS ! UPS (2-day) or OVERNIGHT ! Overnight shipping done at PI expense Recipient_Email: ! Needed if Ship_To: is not PI_Address ! ! Let us know what you think of this template and software! ! Please send a list of your likes and dislikes to your Program Coordinator