Rotation Periods and Cloud Dynamics of Directly Imaged Exoplanets

0 Assigned ID: 1109 ----- Attempting Submission 1 (Fri Apr 07 23:24:36 GMT 2017) ----- HST Phase I Proposal 1109 (APT_HST_Cycle25_grism.apt.2017_04_07_22_34.aptbackup) failed submission. ----- Attempting Submission 2 (Fri Apr 07 23:25:16 GMT 2017) ----- HST Phase I Proposal 1109 (APT_HST_Cycle25_grism.apt.2017_04_07_22_34.aptbackup) failed submission. ----- Attempting Submission 3 (Fri Apr 07 23:25:55 GMT 2017) ----- HST Phase I Proposal 1109 (APT_HST_Cycle25_grism.apt.2017_04_07_22_34.aptbackup) failed submission. ----- Attempting Submission 4 (Fri Apr 07 23:26:24 GMT 2017) ----- HST Phase I Proposal 1109 (APT_HST_Cycle25_grism.apt.2017_04_07_22_34.aptbackup) successfully submitted. Receipt: # 1109-4 ----- Attempting Submission 5 (Fri Apr 07 23:53:04 GMT 2017) ----- HST Phase I Proposal 1109 (APT_HST_Cycle25_grism.apt.2017_04_07_22_34.aptbackup) successfully submitted. Receipt: # 1109-5 ----- Attempting Submission 6 (Sat Apr 08 00:00:26 GMT 2017) ----- HST Phase I Proposal 1109 (APT_HST_Cycle25_grism.apt.2017_04_07_22_34.aptbackup) failed submission. ----- Attempting Submission 7 (Sat Apr 08 00:00:47 GMT 2017) ----- 0 ----- Attempting Submission 1 (Thu Jul 20 00:31:51 GMT 2017) ----- HST Phase II Proposal 15197 (Phase2_APT_HST_Cycle25_grism_2017jul18.apt) successfully submitted. Receipt: # 15197-1 ----- Attempting Submission 2 (Thu Jul 27 16:08:08 GMT 2017) ----- Rotation Periods and Cloud Dynamics of Directly Imaged Exoplanets Precision photometric monitoring of brown dwarfs has shown that variability spanning a broad range of amplitudes (0.1-30%) is extremely common in the infrared. These periodic changes are likely caused by rotationally-modulated features produced by heterogeneous coverage of condensate clouds. Time series spectroscopy is an especially informative tool; by simultaneously probing a range of wavelengths, pressure levels, and evolving phases, this method has opened a new window into the atmospheric structure and dynamics of ultracool atmospheres. Recent observations of young brown dwarfs and planetary-mass objects indicate that high-amplitude (~10%) variability may be even more common at low surface gravities. We propose to obtain the first-ever rotational phase maps for three directly imaged exoplanets with time series WFC3/IR spectroscopy to measure the rotation, cloud structure, and atmospheric dynamics of young (2-300 Myr) giant planets. In addition, by combining projected rotational velocities from high-resolution near-infrared spectroscopy of these planets, these spectroscopic light curves will also be used to determine the first obliquity angle of an imaged exoplanet. The science goal of this program is to measure the rotation periods of three planetary-mass companions with time-series WFC3/grism spectroscopy. The relative amplitude, wavelength-dependency, and possible phase shifts of the variability provide informaion about cloud structure and dynamics in these low-mass companions. Detailed observing description: The companions are separated by 1.2-8" from their hosts and are of comparable brightness (apparent H-band magnitudes between 15.6-15.9 mag). Immediately at the start of each orbit we will obtain a single image in F132N band to determine the location of the companion in the grism data. This is also useful for wavelength calibration. The primary science observations will be carried out with WFC3 G141 grism to sample the 1.1-1.7 um spectral region. The 256x256 subarry will be used. The telescope roll angle should be oriented so that the grism dispersion direction is orthogonal to the binary PA. The six orbit allocations for each target should be carried out consecutively in one block to maximize uninterrupted coverage. To minimize flat-fielding errors, each target will be positioned at the same location on the detector for each orbit. As a result there will be no dithering for these observations. Planets and Planet Formation 6 false false false false false false SUPPORTED STAR BROWN DWARF EXTRA-SOLAR PLANET LOW MASS COMPANION NO The quoted photometry is for the companion, which is red and has a spectral type of M9.5. The K7 host star photometry is as follows: R=11.9, J=10.0, H=9.3. It is located 2.2" from the companion at a PA of 175.9 deg. J2000 J2000 J=16.3, H=15.6 STAR BROWN DWARF EXTRA-SOLAR PLANET LOW MASS COMPANION NO The quoted photometry is for the companion, which is red and has a spectral type of L1. The M0 host star photometry is as follows: R=13.6, J=9.9, H=9.0. It is located 1.2" from the companion at a PA of 270 deg. J2000 J2000 J=17.0, H=15.9 STAR BROWN DWARF EXTRA-SOLAR PLANET LOW MASS COMPANION NO The spectral type of the science target (VHS1256b) is ~L7, so its spectrum is very red. The coordinates and magnitudes listed here are for the companion VHS1256 b, which is located 8 arcsec from its host. The coordinates for the host star (M7.5 spectral type) are RA=12:56:02.151, Dec=-12:57:21.71. The host star magnitudes are: V=17.76, J=11.0, H=10.5. J2000 J2000 J=16.7, H=15.6 WFC3/IR Spectroscopic No No G141 WFC3/IR Spectroscopic No No G141 WFC3/IR Spectroscopic No No G141 1500416853696 The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. +/- 30 deg tolerance on Orient. (Tic-Visit :proposal-id 15197 :visit-id "01" :proposal-version -1 :trans-version "20170613" :date "18-Jul-2017 17:27:33.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 6 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1185696 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15197 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15197 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2865 :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 3209 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15197 :visit-id "01" :orbit-number 2 :pcs-time 222 :si-vis-utilization 2975 :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 3209 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15197 :visit-id "01" :orbit-number 3 :pcs-time 222 :si-vis-utilization 2975 :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 3209 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15197 :visit-id "01" :orbit-number 4 :pcs-time 222 :si-vis-utilization 2975 :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 3209 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15197 :visit-id "01" :orbit-number 5 :pcs-time 222 :si-vis-utilization 2975 :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 3209 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15197 :visit-id "01" :orbit-number 6 :pcs-time 222 :si-vis-utilization 2975 :al-overhead-at-end 0 :internal-dur-at-end 441 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3209 :pcs-gap 0 ) true 6 0 Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. 1501172644679 /private/var/folders/q_/glfmvhmj0mq4qm_yvhs134lh0003lp/T/OPVisit9040679723448052153.xml The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. Orient constrained by availablility of guide stars (Tic-Visit :proposal-id 15197 :visit-id "07" :proposal-version -1 :trans-version "20170613" :date "27-Jul-2017 12:24:01.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 6 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 2832752 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15197 :visit-id "07" :obset-id "07" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15197 :visit-id "07" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2719 :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 3217 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15197 :visit-id "07" :orbit-number 2 :pcs-time 222 :si-vis-utilization 2840 :al-overhead-at-end 0 :internal-dur-at-end 130 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3217 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15197 :visit-id "07" :orbit-number 3 :pcs-time 222 :si-vis-utilization 2840 :al-overhead-at-end 0 :internal-dur-at-end 130 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3217 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15197 :visit-id "07" :orbit-number 4 :pcs-time 222 :si-vis-utilization 2840 :al-overhead-at-end 0 :internal-dur-at-end 130 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3217 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15197 :visit-id "07" :orbit-number 5 :pcs-time 222 :si-vis-utilization 2840 :al-overhead-at-end 0 :internal-dur-at-end 130 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3217 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15197 :visit-id "07" :orbit-number 6 :pcs-time 222 :si-vis-utilization 2840 :al-overhead-at-end 0 :internal-dur-at-end 478 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3217 :pcs-gap 0 ) true 6 0 Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. 1500415334362 The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. +/- 10 deg tolerance on Orient. 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Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration. Image in F132N for wavelength calibration.