0 Assigned ID: 1033 ----- Attempting Submission 1 (Fri Apr 10 23:22:07 GMT 2015) ----- MR: Updated acq exptime to 15s, removed 20s from sci_I, added 10s to sci_IV -159505077 ----- Attempting Submission 1 (Fri Jul 17 20:12:45 GMT 2015) ----- ----- Attempting Submission 2 (Fri Aug 05 13:07:46 GMT 2016) ----- ----- Attempting Submission 3 (Fri Aug 05 20:27:42 GMT 2016) ----- Over allocation is due to extra BOP object and OFFSET S/C visit. Visibility overrun was created by addition of OFFSET and shouldn't be a problem Characterizing a Magnetic CV Associated with a PNe via COS UV Spectroscopy Cataclysmic variables (CVs) are the most abundant class of X-ray binary system. We have recently discovered a new CV that is consistent with the position of a known planetary nebula. The discovery of a compact binary system in a planetary nebula comes with the promise of insight into common envelope physics and SN Ia progenitors if the binary mass is greater than Chandrasekhar. Herein, we propose to obtain 2 orbits of HST/COS FUV moderate resolution spectroscopy to further characterize this intriguing binary system. The requested science exposure will enable the first constraints to be placed on the FUV emission, including the potential emission from the WD and the truncated accretion disk. Proposed Observation: ================== We propose to obtain a high quality FUV spectrum of the cataclysmic variable G343.3-0.6, with HST/COS. This observation will enable constraints to be placed on the nature of the accretion flow via detection of the high energy flux from the inner accretion disk and perhaps even the surface of the white dwarf (e.g., Gansicke et al. 2006, Sion et al. 2013). Observing Mode: ============= We plan to use the FUV grating G140L with a central wavelength of lambda_c=1105Ang. This will provide continuous spectral coverage between 1121 - 2148Ang (segment A), while turning segment B off. This wavelength range includes most of the high and medium ionization lines from C, N, O, Si and HeII which we expect to be strong for this source. We prefer lambda_c=1105 over lambda_c=1280 because we are especially interested in the N V line emission near 1240Ang (to determine the elemental abundances, ionization structure), which would fall between the A and B segments for lambda_c=1280Ang setting. The bright geo-coronal Ly_alpha emission will make a region of 10Ang width unusable around 1216Ang, but should not affect the N V line. All observations will be carried out in TIME-TAG, FLASH=YES, SEGMENT=A mode so that the position, arrival time, and pulse height of each detected photon are recorded, and science and wavelength-calibration spectra are obtained concurrently. The spectral lines we are interested in are significantly far from the prominent geo-coronal emission lines like Ly_alpha and O I 1304Ang. Furthermore, TIME-TAG mode will allow us to filter out any unpredictable transient changes in the background. Based on the detailed orbit planning, the entire program will be completed in 2 HST orbits. HOT STARS 12 false true false false false false AVAILABLE STAR ACCRETION DISK INTERMEDIATE POLAR PLANETARY NEBULA CENTRAL STAR NO J2000 J2000 0.06 mJy @ 2000 Angstrom UNIDENTIFIED BLANK FIELD NO This target is a blank piece of sky which is the bright object safe pointing and is 9.163 arseconds away at a PA 56.7 degrees from PNEG343. Based on observations for day 16.280 (U3=105) J2000 COS/FUV Spectroscopic No No G140L 1105 Timing link suitability includes constraints ([01 After T1 by at least 3.0 days]) The scheduling data was generated by CASM 24.2. CASM was run in Phase II mode. /private/var/folders/tl/6zb796b54qdds5ws2z7669lw0080n0/T/OPVisit8064496912572613593.xml This should be scheduled in evening, local time. Flags need to be cleared during the work day. (Tic-Visit :proposal-id 14229 :visit-id "01" :proposal-version -1 :trans-version "20160601" :date "05-Aug-2016 16:25:15.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 400224 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14229 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14229 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2941 :al-overhead-at-end 0 :internal-dur-at-end 124 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3307 :pcs-gap 0 ) (Tic-Orbit :proposal-id 14229 :visit-id "01" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3078 :al-overhead-at-end 0 :internal-dur-at-end 350 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3307 :pcs-gap 0 ) true 2 0 The scheduling data was generated by CASM 24.2. CASM was run in Phase II mode. This visit is for BOP checking the safe target only and should not execute onboard HST (Tic-Visit :proposal-id 14229 :visit-id "B1" :proposal-version -1 :trans-version "20160601" :date "05-Aug-2016 08:59:10.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 400256 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14229 :visit-id "B1" :obset-id "B1" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14229 :visit-id "B1" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2955 :al-overhead-at-end 0 :internal-dur-at-end 38 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3307 :pcs-gap 0 ) (Tic-Orbit :proposal-id 14229 :visit-id "B1" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3068 :al-overhead-at-end 0 :internal-dur-at-end 350 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3307 :pcs-gap 0 ) false 2 0 Timing link suitability includes constraints ([01 After T1 by at least 3.0 days]) The scheduling data was generated by CASM 24.2. CASM was run in Phase II mode. This visit allocates and sets up the safe position offset slot for 01 which will use that slot. This S/C visit should go early in the week while visit 01 will be at least 3 days later. The S/C visit will contain only 1 exposure. Offset based on 16.280, U3=105 (Tic-Visit :proposal-id 14229 :visit-id "T1" :proposal-version -1 :trans-version "20160601" :date "05-Aug-2016 08:59:10.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "11" :si-bright-earth-limb-angle 20.0 :data-volume 0 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14229 :visit-id "T1" :obset-id "T1" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14229 :visit-id "T1" :orbit-number 1 :pcs-time 333 :si-vis-utilization 5 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3307 :pcs-gap 0 ) false 1 0