12475( 3) - 04-Jun-2012 17:13:16 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 12475 Version: 3 Check-in Time: 04-Jun-2012 17:13:16 STScI Edit Number: 1 Title Cool Star Winds and the Evolution of Exoplanetary Atmospheres ------------------------------------------------------------------------------------ Type Cycle GO 19 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Seth Redfield Wesleyan University CoI: Dr. Brian E. Wood Naval Research Laboratory N CoI: Dr. Hans-Reinhard Müller Dartmouth College N CoI: Dr. Jeffrey L. Linsky University of Colorado at Boulder N CoI: Dr. Priscilla C. Frisch University of Chicago N CoI: Dr. Cecile Gry Laboratoire d'Astrophysique de Marseille N CoI: Dr. Adam Gabriel Jensen Wesleyan University N CoI: Dr. Nicolas Lehner University of Notre Dame N CoI: Prof. Heather A. Knutson California Institute of Technology N CoI: Dr. Lucianne M. Walkowicz Princeton University N ------------------------------------------------------------------------------------ Abstract Stellar mass loss is a ubiquitous property of stars, and most stars may host planetary companions. While we are just in the initial stages of assessing how common exoplanets may be, there already exists a rich body of work that seeks to understand the profound connection between a star and its planets, particularly their atmospheres. The unique properties of a star's electromagnetic radiation and particle wind can dictate a planet's thermal and chemical atmospheric structure. Indeed, the solar wind likely eroded a warm and wet ancient Martian atmosphere. As our capability to discover and characterize exoplanets and their atmospheres continues to improve, the habitability of these planets will become a central and potentially radical scientific research question. At the heart of this question will be the relationship of the planet with its host star. The detection of the relatively weak winds of cool, solar-like stars can only be made with high resolution UV spectra. The interaction of a stellar wind with its surrounding interstellar medium produces detectable HI Lyman-alpha absorption, where the amount of absorption is proportional to the mass loss rate. We propose observations of a sample of 4 nearby exoplanetary host stars in order to measure their winds and enable an evaluation, not only of the current stellar conditions, but to reconstruct its evolution over the course of its lifetime. These measurements by HST will provide exclusive insight into how stellar winds influence planetary atmospheres that the community will draw upon long after HST has ended its mission, as the detection and characterization of planets like our own is just beginning. ------------------------------------------------------------------------------------ Observations Description ------------------------ We plan to obtain observations of four late-type (F-K) stars that host exoplanetary systems, in order to inventory the mass-loss rates impacting these specific exoplanets, while simultaneously improving the general relationship between mass-loss, activity, and age. 12475( 3) - 04-Jun-2012 17:13:16 - [ 2] Desired Spectral Coverage and Resolution: We plan to use the high resolution E230H grating to observe MgII and FeII. Because the hydrogen at the astrospheric interface is hot (T ~ 100, 000 K), it has a broad absorption profile, and does not necessarily require high spectral resolution, and therefore, to maximize S/N, we plan to use the E140M setting. Desired Aperture Size and Geocoronal Emission: The narrow aperture sizes of STIS are critical in order to minimize the contamination by the geocoronal Lyman-alpha emission. Depending on the time of year, the Earth's motion can Doppler shift the geocoronal line into the region of astrospheric absorption and contaminate our measurement. For 3 of our targets, we require a minimal timing constraint to ensure that the geocoronal line is in the core of the ISM absorption (still allowing >6 months to perform observations). Desired Signal-to-Noise and Exposure Times: Because cool star spectra are emission line sources in the UV, estimating expected S/N for our planned spectra requires first estimating Lyman-alpha and MgII fluxes, which we can do by extrapolating from previously observed stars. Chromospheric line fluxes (such as MgII and Lyman-alpha) are related to X-ray fluxes (Ayres et al. 1995). Wood et al. (2005a) provide Lyman-alpha spectra for many stars, which serve as the comparison stars for our purposes here. After acquisition, peakup, and observational overhead are considered, we expect at least 28 minutes to be available in the first orbit for the E230H exposure. This provides time to attain very high S/N of >50 at the half-maximum (that is, one half FWHM from the line center, because it is unlikely that the ISM absorption will be centered at the same velocity as the star) of the strong MgII lines. After acquisition and overheads are considered, we expect at least 41 minutes of exposure time to be available in the second orbit for the E140M exposure, and 48 minutes in subsequent orbits. Brightness Limits: All of our targets are late-type stars which have UV spectra characterized by minimal continua, but strong emission lines. For this reason, all of our targets fall far short of the global brightness limit. IUE spectra for our stars confirm this. For example, in the E230H setting, using IUE data, our earliest spectral type target (GJ61; F8V) only results in 5.8 counts/s. The emission lines also fall far short of the local brightness limit. The two emission lines of interest in this proposal (Lyman-alpha and MgII) are also the brightest, and therefore, the procedure given above for estimating the S/N near their peaks is also utilized to test for brightness limit violations. Again, GJ61 is among the strongest MgII emission line sources in our sample, and in the brightest pixel, only generates 3.0 counts/s. Real Time Justification ----------------------- For 3 of our 4 targets, it will be necessary to restrict the time of observation to ensure that geocoronal emission centered on the Earth's rest frame is well within the saturated core of the broad ISM Lyman-alpha absorption, and therefore does not contaminate the region where astrospheric absorption is expected. Indeed, the geocoronal emission actually becomes a very useful wavelength calibrator. This is not a major time constraint, and there are windows of at least 6 months where the observations can be performed. Calibration Justification 12475( 3) - 04-Jun-2012 17:13:16 - [ 3] ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 12475( 3) - 04-Jun-2012 17:13:16 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 HD192310 STAR, EXTRA-SOLAR RA=20H15M16.5800S +/- 0.01", J2000 V = V = 5.723 +/- 0.04 TYPE=K1V, B-V=0.908, PLANETARY SYSTEM, K DEC=-27D01'57.13" +/- 0.01" -54.2 E(B-V)=0, F-LINE(2796)=4.20E-12, V-IV W-LINE(2796)=0.6, F-LINE(1216)=2.90E-12, W-LINE(1216)=0.7 Reference Frame: ICRS Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 1991.25 +0.08276 -0.18146 0.11333 ------------------------------------------------------------------------------------------------------------------------------------ 2 HD147513 STAR, EXTRA-SOLAR RA=16H24M1.2400S +/- 0.01", J2000 V = V = 5.38 +/- 0.02 TYPE=G5V, B-V=0.597, PLANETARY SYSTEM, G DEC=-39D11'34.76" +/- 0.01" +10.1 E(B-V)=0, F-LINE(2796)=8.58E-12, V-IV W-LINE(2796)=0.6, F-LINE(1216)=5.70E-12, W-LINE(1216)=0.7 Reference Frame: ICRS Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 1991.25 +00.484 +0.00341 0.07769 ------------------------------------------------------------------------------------------------------------------------------------ 3 HD1237 STAR, EXTRA-SOLAR RA=00H16M11.2400S +/- 0.01", J2000 V = -5.9 V = 6.59 +/- 0.01 TYPE=G8V, B-V=0.757, PLANETARY SYSTEM, G DEC=-79D51'3.75" +/- 0.01" E(B-V)=0, F-LINE(2796)=4.82E-12, V-IV W-LINE(2796)=0.6, F-LINE(1216)=3.44E-12, W-LINE(1216)=0.7 Reference Frame: ICRS Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 1991.25 +0.02892 -0.05795 0.05676 ------------------------------------------------------------------------------------------------------------------------------------ 4 HD9826 STAR, EXTRA-SOLAR RA=01H36M47.9800S +/- 0.01", J2000 V = V = 4.09 +/- 0.02 TYPE=F8V, B-V=0.54, PLANETARY SYSTEM, F3-F9 DEC=+41D24'22.99" +/- 0.01" -28.3 E(B-V)=0, F-LINE(2796)=1.61E-11, W-LINE(2796)=0.75, F-LINE(1216)=7.83E-12, W-LINE(1216)=1.0 Reference Frame: ICRS Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 1991.25 -0.01150 -0.38101 0.07425 ------------------------------------------------------------------------------------------------------------------------------------ 12475( 3) - 04-Jun-2012 17:13:16 - [ 5] Visit: 01 Visit Requirements: BETWEEN 15-JUN-2011:00:00:00 AND 24-FEB-2012:00:00:00; BETWEEN 15-JUN-2012:00:00:00 AND 24-FEB-2013:00:00:00 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 HD192310 STIS/CCD ACQ F25ND3 MIRROR 1 0.2 S ------------------------------------------------------------------------------------------------------------------------------------ 2 HD192310 STIS/CCD ACQ/PEA 0.2X0.09 G430M 4451 1 .1 S K ------------------------------------------------------------------------------------------------------------------------------------ 3 HD192310 STIS/NUV ACCUM 0.2X0.09 E230H 2713 1 1885 S -MAMA Comments: Exposure time (seconds) = 1, 885.0000 at wavelength 2796.00 Šgives: SNR = 54.0639 (per resolution element) ------------------------------------------------------------------------------------------------------------------------------------ 4 HD192310 STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 3005 S -MAMA Comments: Exposure time (seconds) = 6, 010.0000 at wavelength 1216.00 Šgives: SNR = 31.0419 (per resolution element) ------------------------------------------------------------------------------------------------------------------------------------ 5 HD192310 STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 3005 S -MAMA Comments: Exposure time (seconds) = 6, 010.0000 at wavelength 1216.00 Šgives: SNR = 31.0419 (per resolution element) ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD192310 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD192310 2 STIS/CCD ACQ/PEA 0.2X0.09 G430M 4451 none none none none 1 N/A K HD192310 3 STIS/NUV ACCUM 0.2X0.09 E230H 2713 none none none none 1 N/A -MAMA HD192310 4 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 2 N/A -MAMA HD192310 5 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 3 N/A -MAMA 12475( 3) - 04-Jun-2012 17:13:16 - [ 6] Visit: 02 Visit Requirements: BETWEEN 08-MAY-2011:00:00:00 AND 24-DEC-2011:00:00:00; BETWEEN 08-MAY-2012:00:00:00 AND 24-DEC-2012:00:00:00 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 HD147513 STIS/CCD ACQ F25ND3 MIRROR 1 0.2 S ------------------------------------------------------------------------------------------------------------------------------------ 2 HD147513 STIS/CCD ACQ/PEA 0.2X0.09 G430M 4451 1 .1 S K ------------------------------------------------------------------------------------------------------------------------------------ 3 HD147513 STIS/NUV ACCUM 0.2X0.09 E230H 2713 1 1929 S -MAMA Comments: Exposure time (seconds) = 1, 929.0000 at wavelength 2796.00 Šgives: SNR = 78.3816 (per resolution element) ------------------------------------------------------------------------------------------------------------------------------------ 4 HD147513 STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 3049 S -MAMA Comments: Exposure time (seconds) = 9, 147.0000 at wavelength 1216.00 Šgives: SNR = 61.8090 (per resolution element) ------------------------------------------------------------------------------------------------------------------------------------ 5 HD147513 STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 3049 S -MAMA Comments: Exposure time (seconds) = 9, 147.0000 at wavelength 1216.00 Šgives: SNR = 61.8090 (per resolution element) ------------------------------------------------------------------------------------------------------------------------------------ 6 HD147513 STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 3049 S -MAMA Comments: Exposure time (seconds) = 9, 147.0000 at wavelength 1216.00 Šgives: SNR = 61.8090 (per resolution element) ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD147513 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD147513 2 STIS/CCD ACQ/PEA 0.2X0.09 G430M 4451 none none none none 1 N/A K HD147513 3 STIS/NUV ACCUM 0.2X0.09 E230H 2713 none none none none 1 N/A -MAMA 12475( 3) - 04-Jun-2012 17:13:16 - [ 7] 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD147513 4 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 2 N/A -MAMA HD147513 5 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 3 N/A -MAMA HD147513 6 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 4 N/A -MAMA 12475( 3) - 04-Jun-2012 17:13:16 - [ 8] Visit: 03 Visit Requirements: 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 HD1237 STIS/CCD ACQ F25ND3 MIRROR 1 0.4 S ------------------------------------------------------------------------------------------------------------------------------------ 2 HD1237 STIS/CCD ACQ/PEA 0.2X0.09 G430M 4451 1 .2 S K ------------------------------------------------------------------------------------------------------------------------------------ 3 HD1237 STIS/NUV ACCUM 0.2X0.09 E230H 2713 1 2259 S -MAMA Comments: Exposure time (seconds) = 2, 259.0000 at wavelength 2796.00 Šgives: SNR = 62.0043 (per resolution element) ------------------------------------------------------------------------------------------------------------------------------------ 4 HD1237 STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 3381 S -MAMA Comments: Exposure time (seconds) = 6, 762.0000 at wavelength 1216.00 Šgives: SNR = 35.8792 (per resolution element) ------------------------------------------------------------------------------------------------------------------------------------ 5 HD1237 STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 3381 S -MAMA Comments: Exposure time (seconds) = 6, 762.0000 at wavelength 1216.00 Šgives: SNR = 35.8792 (per resolution element) ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD1237 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD1237 2 STIS/CCD ACQ/PEA 0.2X0.09 G430M 4451 none none none none 1 N/A K HD1237 3 STIS/NUV ACCUM 0.2X0.09 E230H 2713 none none none none 1 N/A -MAMA HD1237 4 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 2 N/A -MAMA HD1237 5 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 3 N/A -MAMA 12475( 3) - 04-Jun-2012 17:13:16 - [ 9] Visit: 04 Visit Requirements: BETWEEN 14-MAR-2011:00:00:00 AND 13-DEC-2011:00:00:00; BETWEEN 14-MAR-2012:00:00:00 AND 13-DEC-2012:00:00:00; BETWEEN 14-MAR-2013:00:00:00 AND 13-DEC-2013:00:00:00 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 HD9826 STIS/CCD ACQ F25ND3 MIRROR 1 0.1 S ------------------------------------------------------------------------------------------------------------------------------------ 2 HD9826 STIS/CCD ACQ/PEA 0.2X0.09 G430M 4451 1 .1 S K ------------------------------------------------------------------------------------------------------------------------------------ 3 HD9826 STIS/NUV ACCUM 0.2X0.09 E230H 2713 1 1969 S -MAMA Comments: Exposure time (seconds) = 1, 969.0000 at wavelength 2796.00 Šgives: SNR = 115.4967 (per resolution element) ------------------------------------------------------------------------------------------------------------------------------------ 4 HD9826 STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 3089 S -MAMA Comments: Exposure time (seconds) = 6, 178.0000 at wavelength 1216.00 Šgives: SNR = 47.0706 (per resolution element) ------------------------------------------------------------------------------------------------------------------------------------ 5 HD9826 STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 3089 S -MAMA Comments: Exposure time (seconds) = 6, 178.0000 at wavelength 1216.00 Šgives: SNR = 47.0706 (per resolution element) ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD9826 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD9826 2 STIS/CCD ACQ/PEA 0.2X0.09 G430M 4451 none none none none 1 N/A K HD9826 3 STIS/NUV ACCUM 0.2X0.09 E230H 2713 none none none none 1 N/A -MAMA HD9826 4 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 2 N/A -MAMA HD9826 5 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 3 N/A -MAMA 12475( 3) - 04-Jun-2012 17:13:16 - [ 10] Visit: 53 Visit Requirements: 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 HD1237 STIS/CCD ACQ F25ND3 MIRROR 1 0.4 S ------------------------------------------------------------------------------------------------------------------------------------ 2 HD1237 STIS/CCD ACQ/PEA 0.2X0.09 G430M 4451 1 .2 S K ------------------------------------------------------------------------------------------------------------------------------------ 3 HD1237 STIS/NUV ACCUM 0.2X0.09 E230H 2713 1 2259 S -MAMA Comments: Exposure time (seconds) = 2, 259.0000 at wavelength 2796.00 Šgives: SNR = 62.0043 (per resolution element) ------------------------------------------------------------------------------------------------------------------------------------ 4 HD1237 STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 3381 S -MAMA Comments: Exposure time (seconds) = 6, 762.0000 at wavelength 1216.00 Šgives: SNR = 35.8792 (per resolution element) ------------------------------------------------------------------------------------------------------------------------------------ 5 HD1237 STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 3381 S -MAMA Comments: Exposure time (seconds) = 6, 762.0000 at wavelength 1216.00 Šgives: SNR = 35.8792 (per resolution element) ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD1237 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD1237 2 STIS/CCD ACQ/PEA 0.2X0.09 G430M 4451 none none none none 1 N/A K HD1237 3 STIS/NUV ACCUM 0.2X0.09 E230H 2713 none none none none 1 N/A -MAMA HD1237 4 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 2 N/A -MAMA HD1237 5 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 3 N/A -MAMA 12475( 3) - 04-Jun-2012 17:13:16 - [ 11] Summary Form for Proposal 12475 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 0.2X0.09, 0.2X0.2, F25ND3 ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD, STIS/FUV-MAMA, STIS/NUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ, ACQ/PEAK ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 08-MAY-2011:00:00:00 AND 24-DEC-2011:00:00:00, BETWEEN 08-MAY-2012:00:00:00 AND 24-DEC-2012:00:00:00, BETWEEN 14-MAR-2011:00:00:00 AND 13-DEC-2011:00:00:00, BETWEEN 14-MAR-2012:00:00:00 AND 13-DEC-2012:00:00:00, BETWEEN 14-MAR-2013:00:00:00 AND 13-DEC-2013:00:00:00, BETWEEN 15-JUN-2011:00:00:00 AND 24-FEB-2012:00:00:00, BETWEEN 15-JUN-2012:00:00:00 AND 24-FEB-2013:00:00:00 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements E140M, E230H, G430M, MIRROR ------------------------------------------------------------------------------------------------------------------------------------ Target Names HD1237, HD147513, HD192310, HD9826 ------------------------------------------------------------------------------------------------------------------------------------