PCS and Gyro modes changed to "none selected" Visibility overruns fixed 1456504180 ----- Attempting Submission 2 (Wed Nov 21 03:33:50 GMT 2012) ----- OK Atmospheric Composition of the ExoNeptune HAT-P-11 We propose a joint Spitzer/HST program to observe transits of the exoNeptune planet HAT-P-11. From the wavelength dependence of the transit depths, we will infer the composition of this world’s atmosphere. Our Spitzer photometry at both 3.6- and 4.5-microns will be sensitive to depletions or enhancements of methane such as recently reported for GJ436b. HST/WFC3 spectroscopy of water vapor at 1.4-microns will measure the oxygen abundance, a proxy for potential heavy−element enrichment of the planet. In addition to molecular composition, our suite of data will be sensitive to the presence of clouds and haze, similar to the recent Bean et al. observations of GJ1214b. Not only is HAT-P-11 key to understanding the unusual atmospheric compositions of small planets, but it also presents us with very favorable observational circumstances. It has the most massive atmosphere of any planet smaller than the gas giants, and it lies in the Kepler field. High−cadence photometry from Kepler will be acquired simultaneously with our Spitzer and HST observations. The Kepler data will not only provide an exquisitely precise optical radius, but will also allow us to model and remove the effect of star spots from our HST and Spitzer data. WFC3 grism spectroscopy of HAT-P-11 EXTRA-SOLAR PLANETS 12 false 0.0 0.0 false false false false SUPPORTED STAR K V-IV This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 WFC3/IR Imaging No No F139M The scheduling data was generated by CASM 20.2. CASM was run in Phase II mode. /Users/drake/Desktop/OP-cache/12449_revised2-v01.xml first transit 1350536318000 86.80135327205619 (Tic-Visit :proposal-id 12449 :visit-id "01" :proposal-version -1 :trans-version "20120802" :date "20-Nov-2012 21:49:08.0" :trans-errors '(:WARNINGS 14 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 4 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1094432 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12449 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12449 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3483 :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 3377 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12449 :visit-id "01" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3530 :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 3377 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12449 :visit-id "01" :orbit-number 3 :pcs-time 222 :si-vis-utilization 3530 :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 3377 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12449 :visit-id "01" :orbit-number 4 :pcs-time 222 :si-vis-utilization 3284 :al-overhead-at-end 0 :internal-dur-at-end 480 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3377 :pcs-gap 0 ) true 4 4 The scheduling data was generated by CASM 20.2. CASM was run in Phase II mode. /Users/drake/Desktop/OP-cache/12449_revised2-v02.xml second transit (Tic-Visit :proposal-id 12449 :visit-id "02" :proposal-version -1 :trans-version "20120802" :date "20-Nov-2012 21:57:27.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 4 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 959808 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12449 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12449 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2991 :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 3377 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12449 :visit-id "02" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3038 :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 3377 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12449 :visit-id "02" :orbit-number 3 :pcs-time 222 :si-vis-utilization 3038 :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 3377 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12449 :visit-id "02" :orbit-number 4 :pcs-time 222 :si-vis-utilization 3038 :al-overhead-at-end 0 :internal-dur-at-end 480 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3377 :pcs-gap 0 ) true 4 0