0 Assigned ID: 784 ----- Attempting Submission 1 (Fri Apr 07 19:29:33 GMT 2017) ----- GS Acq Scenario may not be specified in Supported mode. GS Acq Scenario may not be specified in Supported mode. GS Acq Scenario may not be specified in Supported mode. There is the same warning in all 3 of our visits. This is due to the "GS Acq Scenario" field, but it is the same configuration as our previous HST program (14621). We didn't have an error with this same configuration in HST 14621 and those have been executed without problem, so we have kept the configuration despite the warning. It would be good if someone can check this is OK. 584951548 ----- Attempting Submission 1 (Tue Jul 18 20:14:14 GMT 2017) ----- There is the same warning in all 3 of our visits. This is due to the "GS Acq Scenario" field, but it is the same configuration as our previous HST program (14621). We didn't have an error with this same configuration in HST 14621 and those have been executed without problem, so we have kept the configuration despite the warning. It would be good if someone can check this is OK. Probing the young circumplanetary environment of Beta Pic b during transit egress Among the thousands of known exoplanets, Beta Pic b is the only directly imaged exoplanet with a nearly edge-on orbit. We show that the latest astrometric measurements rule out a transit by the planet at 10-sigma significance, but we are certain that the Hill sphere of the planet will transit. With a period of ~22 years and no other system like it, this Hill sphere transit provides a rare opportunity to study the evolving circumplanetary environment of a young and well-characterized exoplanet. To compliment GO-14621, our Cycle 25 proposal to monitor the ingress of the Hill sphere, we propose a modest HST program to photometrically search for signatures of the planet's large scale circumplanetary material during the egress of the Hill sphere transit. The existence of such material is plausible given that Beta Pic's young age is similar to that of the ring-bearing J1407b system. Combined with GO-14621 and less-precise but dedicated ground-based monitoring, these observations will give us a comprehensive set of observations about this young circumplanetary environment. Given the sparse observational data of circumplanetary environments, non-detections will also be valuable for constraining the timescales relevant to circumplanetary material and moon formation. If photometric variations are detected with HST, these results would yield empirical information concerning the dynamics of the system and the evolution of planetary systems as a whole. A search for signatures of Beta Pic b's large scale circumplanetary material. Planets and Planet Formation 0 false false false false false false SUPPORTED STAR A4-A9 V-IV EXTRA-SOLAR PLANETARY SYSTEM This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 WFC3/UVIS Imaging No No F953N Timing link suitability includes constraints ([05 After 04 by 7.0 to 21.0 days]) The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. /private/var/folders/z3/xy_g1v_s5fz9yrhzb8thz4cr0001qc/T/OPVisit7759642562593933867.xml This visit uses spatial scanning at a rate of 0.5 arcsec/sec. Scanning is in both the forward and reverse directions. This visit has broad timing and orientation requirements. (Tic-Visit :proposal-id 15119 :visit-id "04" :proposal-version -1 :trans-version "20170613" :date "19-Jul-2017 10:18:57.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 703888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15119 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15119 :visit-id "04" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3012 :al-overhead-at-end 0 :internal-dur-at-end 652 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3393 :pcs-gap 0 ) true 1 0 Timing link suitability includes constraints ([05 After 04 by 7.0 to 21.0 days]) The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. /private/var/folders/z3/xy_g1v_s5fz9yrhzb8thz4cr0001qc/T/OPVisit5876819479124622209.xml This visit uses spatial scanning at a rate of 0.5 arcsec/sec. Scanning is in both the forward and reverse directions. This visit has broad timing and orientation requirements. (Tic-Visit :proposal-id 15119 :visit-id "05" :proposal-version -1 :trans-version "20170613" :date "19-Jul-2017 10:18:58.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 703888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15119 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15119 :visit-id "05" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3012 :al-overhead-at-end 0 :internal-dur-at-end 652 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3393 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. /private/var/folders/z3/xy_g1v_s5fz9yrhzb8thz4cr0001qc/T/OPVisit9056179499789233386.xml This visit uses spatial scanning at a rate of 0.5 arcsec/sec. Scanning is in both the forward and reverse directions. This visit has broad timing and orientation requirements. (Tic-Visit :proposal-id 15119 :visit-id "06" :proposal-version -1 :trans-version "20170613" :date "19-Jul-2017 10:18:59.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 703888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15119 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15119 :visit-id "06" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3012 :al-overhead-at-end 0 :internal-dur-at-end 652 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3393 :pcs-gap 0 ) true 1 0