0 Assigned ID: 640 ----- Attempting Submission 1 (Mon Jan 28 19:10:23 GMT 2019) ----- HST Phase I Proposal 640 (pi_Men_jan19.apt) successfully submitted. Receipt: # 640-1 ----- Attempting Submission 2 (Mon Jan 28 19:31:17 GMT 2019) ----- Resubmission which includes an update of the transit ephemeris obtained from TESS, the suggested increase in the exposure time of the COS target acquisition (and relative decrease in the exposure time of the first COS science exposure), and goes back having a full orbit 5 exposure for visit 2. Reduced science exposure of COS visit 1 to enable scheduling. -14282864 ----- Attempting Submission 1 (Wed Apr 10 12:43:55 GMT 2019) ----- HST Phase II Proposal 15699 (pi_men_c_GO_15699_PhaseII_v4.apt) successfully submitted. Receipt: # 15699-1 ----- Attempting Submission 3 (Wed Apr 24 10:44:55 GMT 2019) ----- HST Phase II Proposal 15699 (pi_men_c_GO_15699_PhaseII_v4.apt) successfully submitted. Receipt: # 15699-3 ----- Attempting Submission 4 (Tue Jul 09 18:21:01 GMT 2019) ----- ----- Attempting Submission 5 (Thu Nov 21 16:18:16 GMT 2019) ----- No run of auto-adjust of the orbit planner to keep the reduced orserving time in orbit 1 to enable scheduling. Pi Men c: The first confirmed water world? Planets with water-dominated bulk compositions are not represented in our Solar System. Their existence will have major implications on the theories of planet formation and evolution. Yet, none of the ~4,000 known exoplanets have been definitely identified as a water world. Pi Men c, TESS's first discovery, probably stands the best chance to confirm the reality of water worlds. This super-Earth is strongly irradiated by its solar-type host star, and its bulk density is consistent with 50-100% by volume in H2O. Only 18 pc away, this bright system is ideal for transmission spectroscopy, especially at FUV wavelengths probing the uppermost atmosphere. Our photochemistry-evaporation models show that the stellar irradiation received by the planet sustains a vigorous atmospheric outflow. If H2O or other heavy molecules are present, they will photodissociate into atoms and form an extended upper atmosphere that can be probed through absorption at resonance lines. In many ways, Pi Men c is an optimal target for such an investigation. We request 10 HST orbits to cover two FUV transits and search for absorption by H I, O I and C II in the planet's upper atmosphere. Detecting these atoms will allow us to assess whether Pi Men c contains abundant H2O or other heavy gases (e.g. CO2 / CO), and will motivate a thorough observing programme in future GO Calls. This insight is unattainable by current facilities operating in the near-infrared. We will support our HST-based findings with comprehensive photochemical modeling of the planet's upper and lower atmospheres. We will observe two transits of pi Men c with 2 visits. 1 visit will entirely use STIS G140M 52"x0.2" (1222 cenwave; time-tag mode) to prioritize Lyman alpha (1216 Angstroms), and the other will entirely use COS G130M PSA (1222 cenwave; time-tag mode) to prioritize the metal lines. We will also be attempting an airglow subtraction on Lyman alpha in the COS spectra as was recently demonstrated in Bourrier et al. (2018), which would allow us to search for time variability in the planetary Lyman alpha absorption. The visits will each contain 5 consecutive orbits. The transit of pi Men c lasts approximately 3 hours, so the first 2 orbits will cover the pre-transit period, the second 2 orbits will cover the transit, and the final orbit will cover the post-transit period. Planets and Planet Formation 3 false false true false false false false SUPPORTED EXT-STAR EXTRA-SOLAR PLANET G V-IV NO This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 GALEX FUV = 17.52+/-0.06 mag STIS/FUV-MAMA Spectroscopic No No G140M 1222 COS/FUV Spectroscopic No No G130M 1300 The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. As in past programs targeting Ly alpha exoplanet transits with STIS, we keep the instrument settings identical throughout the entire visit. We enabled the available wavecal=no mode to increase the duty cycle of the STIS observations and prevent auto-wave calibration from disrupting the transit time sequence in the STIS visit and preventing instrument setting changes. In addition, we keep an identical setup for the entire visit and do not switch between any settings to further prevent instrument-induced systematic errors in the photometric time series observations. For wavelength calibration, we set a wavelength calibration frame during the Earth occultation at the end of each orbit. 1563955440000 213.0 (Tic-Visit :proposal-id 15699 :visit-id "01" :proposal-version -1 :trans-version "20190514" :date "09-Jul-2019 20:17:00.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 5 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 783152 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15699 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15699 :visit-id "01" :orbit-number 1 :pcs-time 393 :si-vis-utilization 3141 :al-overhead-at-end 0 :internal-dur-at-end 360 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3534 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15699 :visit-id "01" :orbit-number 2 :pcs-time 302 :si-vis-utilization 3232 :al-overhead-at-end 0 :internal-dur-at-end 360 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3534 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15699 :visit-id "01" :orbit-number 3 :pcs-time 302 :si-vis-utilization 3232 :al-overhead-at-end 0 :internal-dur-at-end 360 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3534 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15699 :visit-id "01" :orbit-number 4 :pcs-time 302 :si-vis-utilization 3232 :al-overhead-at-end 0 :internal-dur-at-end 360 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3534 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15699 :visit-id "01" :orbit-number 5 :pcs-time 302 :si-vis-utilization 3232 :al-overhead-at-end 0 :internal-dur-at-end 622 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3534 :pcs-gap 0 ) false 5 0 Acquisition based on the stellar V band magnitude and effective temperature. The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. /tmp/OPVisit13473817027413181545.xml (Tic-Visit :proposal-id 15699 :visit-id "02" :proposal-version -1 :trans-version "20190514" :date "21-Nov-2019 17:14:59.0" :trans-errors '(:WARNINGS 0 :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 261056 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15699 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15699 :visit-id "02" :orbit-number 1 :pcs-time 393 :si-vis-utilization 2841 :al-overhead-at-end 0 :internal-dur-at-end 67 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3534 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15699 :visit-id "02" :orbit-number 2 :pcs-time 302 :si-vis-utilization 3232 :al-overhead-at-end 0 :internal-dur-at-end 86 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3534 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15699 :visit-id "02" :orbit-number 3 :pcs-time 302 :si-vis-utilization 3232 :al-overhead-at-end 0 :internal-dur-at-end 86 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3534 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15699 :visit-id "02" :orbit-number 4 :pcs-time 302 :si-vis-utilization 3232 :al-overhead-at-end 0 :internal-dur-at-end 86 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3534 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15699 :visit-id "02" :orbit-number 5 :pcs-time 302 :si-vis-utilization 3232 :al-overhead-at-end 0 :internal-dur-at-end 379 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3534 :pcs-gap 0 ) true 5 0