11673( 3) - 23-Nov-2009 16:08:11 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 11673 Version: 3 Check-in Time: 23-Nov-2009 16:08:11 STScI Edit Number: 0 Title Dynamics in the atmosphere of the evaporating planet HD189733b ------------------------------------------------------------------------------------ Type Cycle GO 17 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Alain Lecavelier des Etangs CNRS, Institut d'Astrophysique de Paris CoI: Dr. Alfred Vidal-Madjar CNRS, Institut d'Astrophysique de Paris N CoI: Dr. Gilda E. Ballester University of Arizona N CoI: Mr. Jean-Michel Desert CNRS, Institut d'Astrophysique de Paris N CoI: Mr. David Ehrenreich Universite de Grenoble I N CoI: Dr. Roger D. Ferlet CNRS, Institut d'Astrophysique de Paris N CoI: Dr. Guillaume Hebrard CNRS, Institut d'Astrophysique de Paris N CoI: Dr. David Kent Sing CNRS, Institut d'Astrophysique de Paris N ------------------------------------------------------------------------------------ Abstract With HST/STIS, we detected and characterized the upper atmosphere of the extrasolar planet HD209458b, showing that the planet must be evaporating at a rate of ~10^10 g/s in a "blow-off" mechanism. More recently, using ACS we concluded that HD189733b is also evaporating. However, because of the low resolution of the ACS prism spectroscopy, the escape rate and mechanism are still to be determined. This is one of the prime objectives of the present proposal. COS observations of the absorption line profile with 15 km/s resolution will allow us to probe the dynamics of the escaping gas, and therefore to determine the escape rate. Simultaneous observations of the transit depth and spectral shape in several important lines (not only HI, but also OI, CII and possibly NI) will constrain the escape mechanism and allow us to distinguish between several scenarios. The results will enlighten the physical phenomenons at work in the exosphere of these extrasolar planets, and provide new constraints for the modeling of the evaporation of hot-Jupiters. Note: After execution of the first orbit with COS. A Change Request has been accepted to the STIS instrument to secure the scientific return of the Lyman-alpha observations. ------------------------------------------------------------------------------------ Observations Description ------------------------ We plan to observe 3 transits of HD189733b, using 3 visits of 4 HST orbits each. In visit #1, COS was used to obtain 3 exposures with the G130M and in time-tag mode. For visits #2 and #3, STIS will be used with the G140M and in time-tag mode. For each HST visit for STIS observation, we will first execute an ACQ at the 11673( 3) - 23-Nov-2009 16:08:11 - [ 2] beginning of the first orbit with the F28X50OII aperture. With an exposure time of 2s (per search point) the S/N ratio is about 160. For each orbit we request an ACQ/PEAK with G430L, the 52x0.05 slit and exposure time of 1s providing a total count of about 5e6. To observe the planetary transit, the time constraint is given by a phase requirement calculated to allow 2 full HST orbits observation to be executed before and one full HST orbit after the planetary transit. The first exposure of the first orbit must be taken at a phase in the range 0.927 - 0.934 Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- This program should be scheduled for observations with the lowest airglow possible. The keyword SHADOW has not been selected so that the observations are schedulable, but these observations should be scheduled close to SHADOW if possible. (Selection of SHADOW keyword results in strange results from the 'orbit planner', and almost zero visibility from the 'visit planner'). ------------------------------------------------------------------------------------ 11673( 3) - 23-Nov-2009 16:08:11 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 HD-189733 STAR, K V-IV RA=20H00M43.7133S +/- 0.1", J2000 V = 7.67 DEC=+22D42'39.07" +/- 0.1" Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 -0.00017 -0.251 0.052 ------------------------------------------------------------------------------------------------------------------------------------ 11673( 3) - 23-Nov-2009 16:08:11 - [ 4] Visit: 01 Visit Requirements: Period 2.218584 D AND ZERO-PHASE HJD2453629.3942 On Hold Comments: Additional Comments: This program should be scheduled for observations with the lowest airglow possible. The keyword SHADOW has not been selected so that the observations are schedulable, but these observations should be scheduled close to SHADOW if possible. (Selection of SHADOW keyword results in strange results from the 'orbit planner', and almost zero visibility from the 'visit planner'). Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD-189733 COS/NUV ACQ/SEA PSA G230L 3000 SCAN-SIZE=2 1 3 S RCH Comments: Exposure time to reach S/N of 100 ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-189733 COS/NUV ACQ/PEA PSA G230L 3000 1 2 S KXD Comments: Exposure time of 2s for S/N of 100 on Stripe B ------------------------------------------------------------------------------------------------------------------------------------ 3 HD-189733 COS/NUV ACQ/PEA PSA G230L 3000 STEP-SIZE=1.2 1 2 S KD Comments: Exposure time of 2s for S/N of 100 ------------------------------------------------------------------------------------------------------------------------------------ 4 HD-189733 COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=1200 1 120 S G see below ------------------------------------------------------------------------------------------------------------------------------------ 5 HD-189733 COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=1200 1 800 S G see below ------------------------------------------------------------------------------------------------------------------------------------ 6 HD-189733 COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=1200 1 800 S G see below ------------------------------------------------------------------------------------------------------------------------------------ 7 HD-189733 COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=1200 1 800 S PHASE 0.962 TO 0.976 G see below ------------------------------------------------------------------------------------------------------------------------------------ 8 HD-189733 COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=1200 1 800 S G see below ------------------------------------------------------------------------------------------------------------------------------------ 9 HD-189733 COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=1200 1 800 S G see below ------------------------------------------------------------------------------------------------------------------------------------ 10 HD-189733 COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=1200 1 800 S G see below ------------------------------------------------------------------------------------------------------------------------------------ 11 HD-189733 COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=1200 1 800 S G see below ------------------------------------------------------------------------------------------------------------------------------------ 11673( 3) - 23-Nov-2009 16:08:11 - [ 5] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 12 HD-189733 COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=1200 1 800 S G see below ------------------------------------------------------------------------------------------------------------------------------------ 13 HD-189733 COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=1200 1 800 S G see below ------------------------------------------------------------------------------------------------------------------------------------ 14 HD-189733 COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=1200 1 800 S G see below ------------------------------------------------------------------------------------------------------------------------------------ 15 HD-189733 COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=1200 1 800 S G see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD-189733 1 COS/NUV ACQ/SEA PSA G230L 3000 none none none none 1 N/A RCH HD-189733 2 COS/NUV ACQ/PEA PSA G230L 3000 none none none none 1 N/A KXD HD-189733 3 COS/NUV ACQ/PEA PSA G230L 3000 none none none none 1 N/A KD HD-189733 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 209.0 S G HD-189733 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 889.0 S G HD-189733 6 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 889.0 S G HD-189733 7 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 889.0 S G HD-189733 8 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 889.0 S G HD-189733 9 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 889.0 S G HD-189733 10 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 889.0 S G HD-189733 11 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 889.0 S G HD-189733 12 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 889.0 S G HD-189733 13 COS/FUV TIME-TA PSA G130M 1291 none none none none 4 889.0 S G HD-189733 14 COS/FUV TIME-TA PSA G130M 1291 none none none none 4 889.0 S G 11673( 3) - 23-Nov-2009 16:08:11 - [ 6] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD-189733 15 COS/FUV TIME-TA PSA G130M 1291 none none none none 4 889.0 S G 11673( 3) - 23-Nov-2009 16:08:11 - [ 7] Visit: 02 Visit Requirements: Period 2.218576 D AND ZERO-PHASE HJD2454399.2399 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD-189733 STIS/CCD ACQ F28X50OII MIRROR 1 2 S PHASE 0.927 TO 0.934; SEQ 1-3 NON-INT Comments: SNR = 163.00, Brightest (binned) pixel = 15400 e- (ETC 18.0.2). ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-189733 STIS/CCD ACQ/PEA 52X0.05 G430L 4300 1 1 S K Comments: Total count = 5e6 in 1 sec (Gain=4, CR Split=1), exposure time well below saturation at ~40 s. ------------------------------------------------------------------------------------------------------------------------------------ 3 HD-189733 STIS/FUV TIME-TA 52X0.1 G140M 1222 BUFFER-TIME=2000 1 1880 S -MAMA G see below Comments: For the Buffer time, we assumed a total rate conservative upper limit of about 250 count/s (K0 star V=7.5+ high airglow + Ly-alpha line of 5e-13 erg/s/cm2), providing a maximum buffer-time of 8000s. 2000 s buffer-time will secure the accum of all scientific photons (p228 and Fig. 11.6 p229 of STIS Handbook). ------------------------------------------------------------------------------------------------------------------------------------ 4 HD-189733 STIS/CCD ACQ/PEA 52X0.05 G430L 4300 1 1 S SEQ 4-5 NON-INT K Comments: Total count = 5e6 in 1 sec (Gain=4, CR Split=1), exposure time well below saturation at ~40 s. ------------------------------------------------------------------------------------------------------------------------------------ 5 HD-189733 STIS/FUV TIME-TA 52X0.1 G140M 1222 BUFFER-TIME=2000 1 2240 S -MAMA G see below ------------------------------------------------------------------------------------------------------------------------------------ 6 HD-189733 STIS/CCD ACQ/PEA 52X0.05 G430L 4300 1 1 S SEQ 6-7 NON-INT K Comments: Total count = 5e6 in 1 sec (Gain=4, CR Split=1), exposure time well below saturation at ~40 s. ------------------------------------------------------------------------------------------------------------------------------------ 7 HD-189733 STIS/FUV TIME-TA 52X0.1 G140M 1222 BUFFER-TIME=2000 1 2240 S -MAMA G see below ------------------------------------------------------------------------------------------------------------------------------------ 11673( 3) - 23-Nov-2009 16:08:11 - [ 8] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 8 HD-189733 STIS/CCD ACQ/PEA 52X0.05 G430L 4300 1 1 S SEQ 8-9 NON-INT K Comments: Total count = 5e6 in 1 sec (Gain=4, CR Split=1), exposure time well below saturation at ~40 s. ------------------------------------------------------------------------------------------------------------------------------------ 9 HD-189733 STIS/FUV TIME-TA 52X0.1 G140M 1222 BUFFER-TIME=2000 1 2240 S -MAMA G see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD-189733 1 STIS/CCD ACQ F28X50OI MIRROR none none none none 1 N/A I HD-189733 2 STIS/CCD ACQ/PEA 52X0.05 G430L 4300 none none none none 1 N/A K HD-189733 3 STIS/FUV TIME-TA 52X0.1 G140M 1222 none none none none 1 1894.0 S -MAMA G HD-189733 4 STIS/CCD ACQ/PEA 52X0.05 G430L 4300 none none none none 2 N/A K HD-189733 5 STIS/FUV TIME-TA 52X0.1 G140M 1222 none none none none 2 2253.0 S -MAMA G HD-189733 6 STIS/CCD ACQ/PEA 52X0.05 G430L 4300 none none none none 3 N/A K HD-189733 7 STIS/FUV TIME-TA 52X0.1 G140M 1222 none none none none 3 2253.0 S -MAMA G HD-189733 8 STIS/CCD ACQ/PEA 52X0.05 G430L 4300 none none none none 4 N/A K HD-189733 9 STIS/FUV TIME-TA 52X0.1 G140M 1222 none none none none 4 2253.0 S -MAMA G 11673( 3) - 23-Nov-2009 16:08:11 - [ 9] Visit: 03 Visit Requirements: Period 2.218576 D AND ZERO-PHASE HJD2454399.2399 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD-189733 STIS/CCD ACQ F28X50OII MIRROR 1 2 S PHASE 0.927 TO 0.934; SEQ 1-3 NON-INT Comments: SNR = 163.00, Brightest (binned) pixel = 15400 e- (ETC 18.0.2). ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-189733 STIS/CCD ACQ/PEA 52X0.05 G430L 4300 1 1 S K Comments: Total count = 5e6 in 1 sec (Gain=4, CR Split=1), exposure time well below saturation at ~40 s. ------------------------------------------------------------------------------------------------------------------------------------ 3 HD-189733 STIS/FUV TIME-TA 52X0.1 G140M 1222 BUFFER-TIME=2000 1 1880 S -MAMA G see below Comments: For the Buffer time, we assumed a total rate conservative upper limit of about 250 count/s (K0 star V=7.5+ high airglow + Ly-alpha line of 5e-13 erg/s/cm2), providing a maximum buffer-time of 8000s. 2000 s buffer-time will secure the accum of all scientific photons (p228 and Fig. 11.6 p229 of STIS Handbook). ------------------------------------------------------------------------------------------------------------------------------------ 4 HD-189733 STIS/CCD ACQ/PEA 52X0.05 G430L 4300 1 1 S SEQ 4-5 NON-INT K Comments: Total count = 5e6 in 1 sec (Gain=4, CR Split=1), exposure time well below saturation at ~40 s. ------------------------------------------------------------------------------------------------------------------------------------ 5 HD-189733 STIS/FUV TIME-TA 52X0.1 G140M 1222 BUFFER-TIME=2000 1 2240 S -MAMA G see below ------------------------------------------------------------------------------------------------------------------------------------ 6 HD-189733 STIS/CCD ACQ/PEA 52X0.05 G430L 4300 1 1 S SEQ 6-7 NON-INT K Comments: Total count = 5e6 in 1 sec (Gain=4, CR Split=1), exposure time well below saturation at ~40 s. ------------------------------------------------------------------------------------------------------------------------------------ 7 HD-189733 STIS/FUV TIME-TA 52X0.1 G140M 1222 BUFFER-TIME=2000 1 2240 S -MAMA G see below ------------------------------------------------------------------------------------------------------------------------------------ 11673( 3) - 23-Nov-2009 16:08:11 - [ 10] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 8 HD-189733 STIS/CCD ACQ/PEA 52X0.05 G430L 4300 1 1 S SEQ 8-9 NON-INT K Comments: Total count = 5e6 in 1 sec (Gain=4, CR Split=1), exposure time well below saturation at ~40 s. ------------------------------------------------------------------------------------------------------------------------------------ 9 HD-189733 STIS/FUV TIME-TA 52X0.1 G140M 1222 BUFFER-TIME=2000 1 2240 S -MAMA G see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD-189733 1 STIS/CCD ACQ F28X50OI MIRROR none none none none 1 N/A I HD-189733 2 STIS/CCD ACQ/PEA 52X0.05 G430L 4300 none none none none 1 N/A K HD-189733 3 STIS/FUV TIME-TA 52X0.1 G140M 1222 none none none none 1 1894.0 S -MAMA G HD-189733 4 STIS/CCD ACQ/PEA 52X0.05 G430L 4300 none none none none 2 N/A K HD-189733 5 STIS/FUV TIME-TA 52X0.1 G140M 1222 none none none none 2 2253.0 S -MAMA G HD-189733 6 STIS/CCD ACQ/PEA 52X0.05 G430L 4300 none none none none 3 N/A K HD-189733 7 STIS/FUV TIME-TA 52X0.1 G140M 1222 none none none none 3 2253.0 S -MAMA G HD-189733 8 STIS/CCD ACQ/PEA 52X0.05 G430L 4300 none none none none 4 N/A K HD-189733 9 STIS/FUV TIME-TA 52X0.1 G140M 1222 none none none none 4 2253.0 S -MAMA G 11673( 3) - 23-Nov-2009 16:08:11 - [ 11] Summary Form for Proposal 11673 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 52X0.05, 52X0.1, F28X50OII, PSA ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/FUV, COS/NUV, STIS/CCD, STIS/FUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ, ACQ/PEAK, ACQ/PEAKD, ACQ/PEAKXD, ACQ/SEARCH, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=1200, BUFFER-TIME=2000, SCAN-SIZE=2, STEP-SIZE=1.2 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PHASE 0.927 TO 0.934, PHASE 0.962 TO 0.976, Period 2.218576 D AND ZERO-PHASE HJD2454399.2399, Period 2.218584 D AND ZERO-PHASE HJD2453629.3942, SEQ 1-3 NON-INT, SEQ 4-5 NON-INT, SEQ 6-7 NON-INT, SEQ 8-9 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G130M, G140M, G230L, G430L, MIRROR ------------------------------------------------------------------------------------------------------------------------------------ Target Names HD-189733 ------------------------------------------------------------------------------------------------------------------------------------