0 Assigned ID: 1175 ----- Attempting Submission 1 (Tue Sep 29 13:44:21 GMT 2015) ----- HST Phase I Proposal 1175 (HST_MC.apt) successfully submitted. Receipt: # 1175-1 ----- Attempting Submission 2 (Tue Sep 29 17:41:42 GMT 2015) ----- HST Phase I Proposal 1175 (HST_MC.apt) successfully submitted. Receipt: # 1175-2 INEFFICIENT ORDERING OF FP-POS POSITIONS 0 ----- Attempting Submission 1 (Thu Dec 10 23:30:16 GMT 2015) ----- ----- Attempting Submission 2 (Tue Jan 05 08:43:56 GMT 2016) ----- ----- Attempting Submission 3 (Fri Jan 29 16:02:56 GMT 2016) ----- This is the best way to keep each FP-POS has a similar exposure and also reduce overhead. We have recently discovered a white dwarf where an asteroid is actively disintegrating. Using data from K2, transits with periods less than 5 hours have been detected from at least 6 fragments. Evidence for circumstellar dust is found by comparing UKIDSS and WISE data. High-resolution optical spectroscopic data from Keck show that the host star is heavily polluted with 11 heavy elements and circumstellar gas. We propose follow-up with time-resolved ultraviolet spectroscopy with the Cosmic Origins Spectrograph to: (i) detect new photospheric elements such as carbon; (ii) monitor any changes of the circumstellar absorption lines during a transit; (iii) measure a transit light curve in the ultraviolet to compare with simultaneous ground-based photometry which we will separately acquire. We aim to understand WD 1145+017 system, which has a heavily polluted atmosphere, a dust disk, circumstellar gas as well as six or more transiting planetesimals. Specifically, our goal is threefold: (i) to detect new elements that only have transitions in the ultraviolet; (ii) use TIME-TAG data to monitor the potential changes of circumstellar lines; (iii) measure a transit light curve in the ultraviolet. To cover all the lines of interest, we will employ the G130M grating with a central wavelength of 1291 Angstrom and a wavelength coverage of 1137-1274 Angstrom and 1292-1432 Angstrom. For target acquisition, we will employ both ACQ/SEARCH and ACQ/IMG. EXTRA-SOLAR PLANETS 12 false false false false SUPPORTED STAR DB NO J2000 J2000 COS/FUV Spectroscopic No No G130M 1291 1454083356361 /private/var/folders/47/kg05ywmx0dj2q6mwp_9dg3j00000gq/T/OPVisit4221884541966720568.xml The scheduling data was generated by CASM 23.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 14467 :visit-id "01" :proposal-version -1 :trans-version "20150609" :date "29-Jan-2016 17:02:36.0" :trans-errors '(:WARNINGS 1 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 5 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 2209088 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14467 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14467 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2812 :al-overhead-at-end 0 :internal-dur-at-end 114 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3156 :pcs-gap 0 ) (Tic-Orbit :proposal-id 14467 :visit-id "01" :orbit-number 2 :pcs-time 222 :si-vis-utilization 2934 :al-overhead-at-end 0 :internal-dur-at-end 114 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3156 :pcs-gap 0 ) (Tic-Orbit :proposal-id 14467 :visit-id "01" :orbit-number 3 :pcs-time 222 :si-vis-utilization 2934 :al-overhead-at-end 0 :internal-dur-at-end 114 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3156 :pcs-gap 0 ) (Tic-Orbit :proposal-id 14467 :visit-id "01" :orbit-number 4 :pcs-time 222 :si-vis-utilization 2934 :al-overhead-at-end 0 :internal-dur-at-end 114 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3156 :pcs-gap 0 ) (Tic-Orbit :proposal-id 14467 :visit-id "01" :orbit-number 5 :pcs-time 222 :si-vis-utilization 2934 :al-overhead-at-end 0 :internal-dur-at-end 407 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3156 :pcs-gap 0 ) true 5 0