13737( 8) - 07-May-2015 13:50:17 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 13737 Version: 8 Check-in Time: 07-May-2015 13:50:17 STScI Edit Number: 2 Title Whimper of a Bang: Documenting the Final Days of the Nearby Type Ia Supernova 2011fe ------------------------------------------------------------------------------------ Type Cycle GO 22 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Benjamin John Shappee Carnegie Institution of Washington Y CoI: Dr. Krzysztof Z. Stanek The Ohio State University N CoI: Dr. C. S. Kochanek The Ohio State University N CoI: Dr. Peter Garnavich University of Notre Dame N CoI: Jill R Gerke The Ohio State University N ------------------------------------------------------------------------------------ Abstract Even though SNe Ia are crucial to cosmological studies as distance indicators, the exact nature of these systems remains theoretically ambiguous and observationally elusive. However, there is a new hope. Due to nucleosynthetic effects during explosion, single and double degenerate SNe Ia models are predicted to produce vastly differing amounts 57Co and 55Fe. 57Co and 55Fe dominate the power of the very late time light curves of SNe Ia at ~1050 days and ~1500 after the initial explosion, respectively. Broad band observations of the bolometric luminosity at these epochs have the ability to measure the ratio of these two isotopes and thus discriminate between progenitor models. As the brightest SN Ia in nearly 40 years, SN 2011fe offers a prime opportunity to follow a SN Ia to such late epochs. Here we propose HST WFC3 optical and IR photometry of SN 2011fe to observe the transition from a 56Co powered lightcurve to a 57Co powered one. These observations will place unique constraints on progenitor systems of SNe Ia. SN 2011fe is likely to remain the best studied normal SN Ia of our generation and if these observations are not made this cycle, they will likely never be done with Hubble because this measurement will not be possible next cycle for SN 2011fe. ------------------------------------------------------------------------------------ Observations Description ------------------------ The goal of this proposal is to construct a quasi-bolometric light curve for the evolving transient, where the spectrum consists of (predominantly) line emission over a very broad range of wavelengths other than the UV (where there is little emission). We selected the F438W ($B$), F555W ($V$) and F600LP ($R + I$) filters for WFC3/UVIS and F110W ($YJ$) and F160W ($H$) for WFC3/IR. There are a number of reasons this filter combination is ideal for this project: 1) These filters cover 4000 to 17000\AA\ with no gaps and relatively uniform throughput. Our ground-based spectroscopy and photometry show there is little flux blueward of 4000 \AA{} so we forgo the F336W ($U$) and UV filters. 2) A single long pass filter would not be sufficient. Since the shape of the SN spectral energy distribution is known to be changing with ionization (\citealp{mcclelland13}, Shappee et al. in prep.), computing the bolometric luminosity with a single F350LP observation would be prone to a large uncertainties. Instead, we decided to use individual broad band filters to retain some spectral information without the added expense of taking a 13737( 8) - 07-May-2015 13:50:17 - [ 2] spectrum. Without this information, we could mistake a change in ionization state for a change in the bolometric luminosity. 3) Finally, the optical filter combination also attempts to evenly partition the optical energy. In the spectrum obtained $850$ days after $t_{B {\rm max}}$, the wave-length ranges covered by $B$, $V$, $R$, and $I$, contained 48\%, 37\%, 21\%, 19\% of the optical energy.\footnote{The wave-length ranges covered by the Bessel filters have overlap, so the sum is greater than one.} Thus we have kept $B$ and $V$ as separate filters but F600LP covers both the $R$ and $I$ wave-length ranges. Finally, we considered also asking for Spitzer observations, but SN~2011fe will be much too faint for mid-IR observations. We estimated the number of orbits and exposures needed for our program using the depth requirements needed to distinguish between the models shown and Figure \ref{fig:lightcurve} and recommendations in the HST Primer. We propose obtaining 3 epochs separated by approximately 160 days to well-sample the transition in powering isotopes. The required exposure times in the optical are determined by first fitting the \citet{roepke12} models to the ground-based LBT data. To be conservative, we then take the fainter model as our fiducial model. The NIR, however, is not as simple because SN~2011fe has become too faint for ground-based observations. Here we base our exposure time calculations as if the NIR ($1.0$--$1.7 \mu$m) had $10\%$ the flux as the optical ($4000$--$10000$ \AA). If we detect nothing, we will know that the NIR is unimportant, otherwise we will have a measure of its contribution as well. It is also important to note that because our measurement is the difference between points on the bolometric light curve, both the earlier and later observations with contribute to the statistical uncertainty in our measurement. Thus, it does not make sense to require the same signal-to-noise ratio (SNR) for the early observations, where it is inexpensive to increase the obtained SNR, and the later observations, where it is significantly more expensive to do so. Thus, we lower our required SNR as the SN fades. We require a SNR of 15, 12, and 10 for the optical filters and 10, 5, and 3 for the NIR upper limits for the 1st, 2nd, and 3rd epochs, respectively. There is also the concern that crowding and confusion may inhibit our measurement. Luckily, SN~2011fe exploded in a sparse region of the outer disk of M101 where archival pre-explosion HST images existed. \citet{li11} use these images and Keck AO observations of SN~2011fe to constrain the progenitor system. They detect no counter-part at the location of the SN and place $2 \sigma$ upper limits of F435W $<27.87$, F555W $< 27.49$, and F814W $< 26.81$ at its position. These limits are more than a magnitude fainter than SN~2011fe is expected during our last epoch.\footnote{It is important to note that these limits were placed with F435W, F555W, and F814W exposure times of 900, 720, and 720 seconds, respectively. This raises the question:~~why are the proposed exposure times so much longer? The reason is these limits are simply for a detection (SNR $\sim 1$), whereas our SNR requirements are much more stringent.} We then used the exposure time calculator to estimate the length of our required observations. Since zodiacal light is a significant background for the last epoch of observations we have slightly altered our requested date to take advantage of minimum of zodiacal light in the direction of M~101. The exposure time calculations for all of the observations include both their dates and 13737( 8) - 07-May-2015 13:50:17 - [ 3] coordinates to ensure that our estimated times are accurate. The estimates are also based on the observed optical spectra of SN~2011fe taken $850$ days after $t_{B {\rm max}}$ which is calibrated to the expected broad-band magnitudes for each epoch. Given the above constraints, the approximate exposure times we request for the first epoch in each filter are $3\times500$ sec in F438W, $3\times400$ sec in F555W, $3\times1500$ sec in F600LPW, $2\times1000$ sec in F110W, and $2\times950$ sec in F160W. The approximate exposure times we request for the second epoch in each filter are $3\times850$ sec in F438W, $3\times700$ sec in F555W, $3\times1900$ sec in F600LPW, $2\times1000$ sec in F110W, and $2\times950$ sec in F160W. Finally, the approximate exposure times we request for the third epoch in each filter are $3\times1200$ sec in F438W, $3\times1200$ sec in F555W, $3\times3025$ sec in F600LPW, $2\times1075$ sec in F110W, and $2\times1075$ sec in F160W. Because of the charge transfer effects of WFC3 when there are few background photons, we will probably use the pre-flash mode for the first two epochs with 438 and 555. This can, however, be settled in Phase 2 and does not affect our current exposure time requirements. No SN Ia has ever been observed at these epochs, so changes in the ionization state of SN~2011fe are possible and can not be predicted. This could conceivably significantly change what filters receive the largest portion of the SN flux. Thus, we plan to measure the light-curve of SN~2011fe soon after each observation is completed and use these measurements to inform how we distribute the next epoch's orbits among the filters. Finally, because there is still a large and ongoing interest in SN 2011fe, we will waive our 1 year proprietary period and make the data immediately public. Parallel Observations: As the closest face-on Milky Way analogue, M~101 is an important nearby galaxy for many reasons. For example, \citet{shara13} have compiled a catalog of 10, 000 Wolf-Rayet stars using extensive HST He II optical narrow-band imaging. There are also F435W/F555W/F814W mosaics covering most of the galaxy (GO 9490). We even have a study of Cepheids using archival ACS data that provides the distance which is currently popular for SN~2011fe (Shappee \& Stanek 2011) and we are surveying the entire galaxy for new Cepheids with the LBT. We include ACS in parallel mode to broaden the archival data base. We have used APT and Aladin to confirm it is possible to place the ACS detector (given the roll restrictions created by the timing of the observations) on the Cepheid fields as well as on lower metallicity regions missed by the F435W/F555W/F814W mosaics. However, because M101 is such and interesting and large galaxy, a ACS parallel observation at any roll angle would be interesting. ------------------------------------------------------------------------------------ 13737( 8) - 07-May-2015 13:50:17 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 SN-2011FE-CE EXT-STAR, SUPERNOVA RA=14H03M2.9896S, J2000 V = 25.5 +/- 1.0 PHF1 TYPE IA DEC=+54D16'51.96" Reference Frame: Other: SIMBAD Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 2 SN-2011FE-OU EXT-STAR, SUPERNOVA RA=14H03M6.1357S, J2000 V = 25.5 +/- 1.0 TER TYPE IA DEC=+54D15'57.76" Reference Frame: Other: SIMBAD Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 3 SN-2011FE-CE EXT-STAR, SUPERNOVA RA=14H03M5.8820S, J2000 V = 25.5 +/- 1.0 PHF2 TYPE IA DEC=+54D15'40.49" Reference Frame: Other: SIMBAD Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 13737( 8) - 07-May-2015 13:50:17 - [ 5] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-LINE-3PT Pattern_Purpose DITHER Number_Of_Points 3 Point_Spacing 0.135 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 46.84 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 0.636 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 41.788 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 3 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.173 Line_Spacing 0.112 Coordinate_Frame POS-TARG Pattern_Orient 23.884 Angle_Between_Sides 81.785 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 13737( 8) - 07-May-2015 13:50:17 - [ 6] Visit: 01 Visit Requirements: ORIENT 18D TO 53 D; BETWEEN 01-OCT-2014:00:00:00 AND 20-OCT-2014:00:00:00 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SN-2011FE-O WFC3/UVI ACCUM UVIS F438W 1 500 S PATTERN 1 1-6; PAR 2 UTER S see below WITH 1 (1998 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY ACS/WFC ACCUM WFC F555W 1 440 S see below (1884 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 SN-2011FE-O WFC3/UVI ACCUM UVIS F600LP 2 700 S PAR 4 WITH 3 UTER S (4200 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY ACS/WFC ACCUM WFC F435W 1 1350 S see below (4464 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 SN-2011FE-O WFC3/UVI ACCUM UVIS F555W 1 450 S PAR 6 WITH 5 UTER S see below (1848 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY ACS/WFC ACCUM WFC F814W 1 350 S see below (1491 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 SN-2011FE-O WFC3/IR MULTIAC IR F160W SAMP-SEQ=STEP100, NSAMP=13 1 DEF PATTERN 2 7-10; PAR 8 UTER CUM (1398.465 WITH 7 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY ACS/WFC ACCUM WFC F658N 1 440 S see below (1163 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 SN-2011FE-O WFC3/IR MULTIAC IR F110W SAMP-SEQ=STEP100, NSAMP=14 1 DEF PAR 10 WITH 9 UTER CUM (1598.466 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 ANY ACS/WFC ACCUM WFC F658N 1 440 S see below (1406 S) ------------------------------------------------------------------------------------------------------------------------------------ 13737( 8) - 07-May-2015 13:50:17 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN-2011FE-OUTER 1 WFC3/UVI ACCUM UVIS F438W 1 none none none 1 626.0 S S SN-2011FE-OUTER 1 WFC3/UVI ACCUM UVIS F438W 2 none none none 2 686.0 S S SN-2011FE-OUTER 1 WFC3/UVI ACCUM UVIS F438W 3 none none none 3 686.0 S S ANY 2 ACS/WFC ACCUM WFC F555W 1 none none none 1 566.0 S ANY 2 ACS/WFC ACCUM WFC F555W 2 none none none 2 659.0 S ANY 2 ACS/WFC ACCUM WFC F555W 3 none none none 3 659.0 S SN-2011FE-OUTER 3 WFC3/UVI ACCUM UVIS F600LP 1 none 1 none 1 N/A S SN-2011FE-OUTER 3 WFC3/UVI ACCUM UVIS F600LP 1 none 2 none 1 N/A S SN-2011FE-OUTER 3 WFC3/UVI ACCUM UVIS F600LP 2 none 1 none 2 N/A S SN-2011FE-OUTER 3 WFC3/UVI ACCUM UVIS F600LP 2 none 2 none 2 N/A S SN-2011FE-OUTER 3 WFC3/UVI ACCUM UVIS F600LP 3 none 1 none 3 N/A S SN-2011FE-OUTER 3 WFC3/UVI ACCUM UVIS F600LP 3 none 2 none 3 N/A S ANY 4 ACS/WFC ACCUM WFC F435W 1 none none none 1 1488.0 S ANY 4 ACS/WFC ACCUM WFC F435W 2 none none none 2 1488.0 S ANY 4 ACS/WFC ACCUM WFC F435W 3 none none none 3 1488.0 S SN-2011FE-OUTER 5 WFC3/UVI ACCUM UVIS F555W 1 none none none 1 576.0 S S SN-2011FE-OUTER 5 WFC3/UVI ACCUM UVIS F555W 2 none none none 2 636.0 S S SN-2011FE-OUTER 5 WFC3/UVI ACCUM UVIS F555W 3 none none none 3 636.0 S S ANY 6 ACS/WFC ACCUM WFC F814W 1 none none none 1 457.0 S ANY 6 ACS/WFC ACCUM WFC F814W 2 none none none 2 517.0 S ANY 6 ACS/WFC ACCUM WFC F814W 3 none none none 3 517.0 S SN-2011FE-OUTER 7 WFC3/IR MULTIAC IR F160W 1 none none none 4 N/A CUM SN-2011FE-OUTER 7 WFC3/IR MULTIAC IR F160W 2 none none none 4 N/A CUM ANY 8 ACS/WFC ACCUM WFC F658N 1 none none none 4 560.0 S ANY 8 ACS/WFC ACCUM WFC F658N 2 none none none 4 603.0 S SN-2011FE-OUTER 9 WFC3/IR MULTIAC IR F110W 1 none none none 4 N/A CUM 13737( 8) - 07-May-2015 13:50:17 - [ 8] 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN-2011FE-OUTER 9 WFC3/IR MULTIAC IR F110W 2 none none none 4 N/A CUM ANY 10 ACS/WFC ACCUM WFC F658N 1 none none none 4 703.0 S ANY 10 ACS/WFC ACCUM WFC F658N 2 none none none 4 703.0 S 13737( 8) - 07-May-2015 13:50:17 - [ 9] Visit: 02 Visit Requirements: ORIENT 162D TO 178 D; BETWEEN 25-MAR-2015:00:00:00 AND 09-APR-2015:00:00:00 On Hold Comments: Additional Comments: Needed to reduce the last parallel exposure on the 4th orbit to make the 5th orbit not need a buffer dump. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SN-2011FE-C WFC3/UVI ACCUM UVIS F438W FLASH=5.0 1 800 S GS ACQ SCENARIO BASE1B3; EPHF1 S see below PATTERN 1 1-2; PAR 2 (2768 S) WITH 1 Comments: Added 5 e- flash to avoid CTE effects. ETC estimated an electron count of 7.6 e- given the filter, exp time, RA and Dec, and rough date of the exposures. ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY ACS/WFC ACCUM WFC F814W 1 600 S see below (2522 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 SN-2011FE-C WFC3/UVI ACCUM UVIS F555W 1 850 S PATTERN 1 3-6; PAR 4 EPHF1 S see below WITH 3 (3247 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY ACS/WFC ACCUM WFC F555W 1 700 S see below (3124 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 SN-2011FE-C WFC3/UVI ACCUM UVIS F600LP 2 900 S PAR 6 WITH 5 EPHF1 S see below (5372 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY ACS/WFC ACCUM WFC F435W 2 650 S see below (4614 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 SN-2011FE-C WFC3/IR MULTIAC IR F160W SAMP-SEQ=STEP100, NSAMP=13 1 DEF PATTERN 2 7-10; PAR 8 EPHF1 CUM (1398.465 WITH 7 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY ACS/WFC ACCUM WFC F658N FLASH=15 1 440 S see below (1143 S) Comments: Added 15 e- flash to avoid CTE effects. ETC estimated an electron count of 5.9 e- given the filter, exp time, RA and Dec, and rough date of the exposures. ------------------------------------------------------------------------------------------------------------------------------------ 13737( 8) - 07-May-2015 13:50:17 - [ 10] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 9 SN-2011FE-C WFC3/IR MULTIAC IR F110W SAMP-SEQ=STEP100, NSAMP=14 1 DEF PAR 10 WITH 9 EPHF1 CUM (1598.466 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 ANY ACS/WFC ACCUM WFC F658N 1 440 S see below (1397 S) ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN-2011FE-CEPHF1 1 WFC3/UVI ACCUM UVIS F438W 1 none none none 1 922.0 S S SN-2011FE-CEPHF1 1 WFC3/UVI ACCUM UVIS F438W 2 none none none 1 923.0 S S SN-2011FE-CEPHF1 1 WFC3/UVI ACCUM UVIS F438W 3 none none none 1 923.0 S S ANY 2 ACS/WFC ACCUM WFC F814W 1 none none none 1 840.0 S ANY 2 ACS/WFC ACCUM WFC F814W 2 none none none 1 890.0 S ANY 2 ACS/WFC ACCUM WFC F814W 3 none none none 1 792.0 S SN-2011FE-CEPHF1 3 WFC3/UVI ACCUM UVIS F555W 1 none none none 2 1085.0 S S SN-2011FE-CEPHF1 3 WFC3/UVI ACCUM UVIS F555W 2 none none none 3 1085.0 S S SN-2011FE-CEPHF1 3 WFC3/UVI ACCUM UVIS F555W 3 none none none 4 1077.0 S S ANY 4 ACS/WFC ACCUM WFC F555W 1 none none none 2 1046.0 S ANY 4 ACS/WFC ACCUM WFC F555W 2 none none none 3 1039.0 S ANY 4 ACS/WFC ACCUM WFC F555W 3 none none none 4 1039.0 S SN-2011FE-CEPHF1 5 WFC3/UVI ACCUM UVIS F600LP 1 none 1 none 2 894.0 S S SN-2011FE-CEPHF1 5 WFC3/UVI ACCUM UVIS F600LP 1 none 2 none 2 894.0 S S SN-2011FE-CEPHF1 5 WFC3/UVI ACCUM UVIS F600LP 2 none 1 none 3 894.0 S S SN-2011FE-CEPHF1 5 WFC3/UVI ACCUM UVIS F600LP 2 none 2 none 3 894.0 S S SN-2011FE-CEPHF1 5 WFC3/UVI ACCUM UVIS F600LP 3 none 1 none 4 898.0 S S SN-2011FE-CEPHF1 5 WFC3/UVI ACCUM UVIS F600LP 3 none 2 none 4 898.0 S S ANY 6 ACS/WFC ACCUM WFC F435W 1 none 1 none 2 814.0 S ANY 6 ACS/WFC ACCUM WFC F435W 1 none 2 none 2 814.0 S ANY 6 ACS/WFC ACCUM WFC F435W 2 none 1 none 3 808.0 S 13737( 8) - 07-May-2015 13:50:17 - [ 11] 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 | ------------------------------------------------------------------------------------------------------------------------------------ ANY 6 ACS/WFC ACCUM WFC F435W 2 none 2 none 3 808.0 S ANY 6 ACS/WFC ACCUM WFC F435W 3 none 1 none 4 650.0 S ANY 6 ACS/WFC ACCUM WFC F435W 3 none 2 none 4 720.0 S SN-2011FE-CEPHF1 7 WFC3/IR MULTIAC IR F160W 1 none none none 5 N/A CUM SN-2011FE-CEPHF1 7 WFC3/IR MULTIAC IR F160W 2 none none none 5 N/A CUM ANY 8 ACS/WFC ACCUM WFC F658N 1 none none none 5 546.0 S ANY 8 ACS/WFC ACCUM WFC F658N 2 none none none 5 597.0 S SN-2011FE-CEPHF1 9 WFC3/IR MULTIAC IR F110W 1 none none none 5 N/A CUM SN-2011FE-CEPHF1 9 WFC3/IR MULTIAC IR F110W 2 none none none 5 N/A CUM ANY 10 ACS/WFC ACCUM WFC F658N 1 none none none 5 703.0 S ANY 10 ACS/WFC ACCUM WFC F658N 2 none none none 5 694.0 S 13737( 8) - 07-May-2015 13:50:17 - [ 12] Visit: 03 Visit Requirements: ORIENT 106D TO 113 D; BETWEEN 10-JUL-2015:00:00:00 AND 25-JUL-2015:00:00:00; ON HOLD On Hold Comments: The exposure times for the third visit will be adjusted depending on the second visits observations. It is not possible to know the SED at these times because no SN Ia has been observed this late. Additional Comments: 7 orbits were not schedulable together, so we had to split the thrid epoch into two visits. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SN-2011FE-C WFC3/UVI ACCUM UVIS F555W 1 920 S PATTERN 3 1-4; PAR 2 EPHF2 S see below WITH 1 (3880 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY ACS/WFC ACCUM WFC F555W 1 850 S see below (3715 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 SN-2011FE-C WFC3/UVI ACCUM UVIS F438W 1 1950 S PAR 4 WITH 3 EPHF2 S see below (8000 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY ACS/WFC ACCUM WFC F435W 1 1800 S see below (7404 S) ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN-2011FE-CEPHF2 1 WFC3/UVI ACCUM UVIS F555W 1 none none none 1 925.0 S S SN-2011FE-CEPHF2 1 WFC3/UVI ACCUM UVIS F555W 2 none none none 2 985.0 S S SN-2011FE-CEPHF2 1 WFC3/UVI ACCUM UVIS F555W 3 none none none 3 985.0 S S SN-2011FE-CEPHF2 1 WFC3/UVI ACCUM UVIS F555W 4 none none none 4 985.0 S S ANY 2 ACS/WFC ACCUM WFC F555W 1 none none none 1 865.0 S ANY 2 ACS/WFC ACCUM WFC F555W 2 none none none 2 950.0 S ANY 2 ACS/WFC ACCUM WFC F555W 3 none none none 3 950.0 S ANY 2 ACS/WFC ACCUM WFC F555W 4 none none none 4 950.0 S SN-2011FE-CEPHF2 3 WFC3/UVI ACCUM UVIS F438W 1 none none none 1 1955.0 S S SN-2011FE-CEPHF2 3 WFC3/UVI ACCUM UVIS F438W 2 none none none 2 2015.0 S S SN-2011FE-CEPHF2 3 WFC3/UVI ACCUM UVIS F438W 3 none none none 3 2015.0 S S 13737( 8) - 07-May-2015 13:50:17 - [ 13] 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN-2011FE-CEPHF2 3 WFC3/UVI ACCUM UVIS F438W 4 none none none 4 2015.0 S S ANY 4 ACS/WFC ACCUM WFC F435W 1 none none none 1 1806.0 S ANY 4 ACS/WFC ACCUM WFC F435W 2 none none none 2 1866.0 S ANY 4 ACS/WFC ACCUM WFC F435W 3 none none none 3 1866.0 S ANY 4 ACS/WFC ACCUM WFC F435W 4 none none none 4 1866.0 S 13737( 8) - 07-May-2015 13:50:17 - [ 14] Visit: 04 Visit Requirements: ORIENT 106D TO 113 D; BETWEEN 10-JUL-2015:00:00:00 AND 25-JUL-2015:00:00:00; ON HOLD On Hold Comments: The exposure times for the third visit will be adjusted depending on the second visits observations. It is not possible to know the SED at these times because no SN Ia has been observed this late. Additional Comments: 7 orbits were not schedulable together, so we had to split the thrid epoch into two visits. Needed to reduce the last parallel exposure on the 4th orbit to make the 5th orbit not need a buffer dump. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SN-2011FE-C WFC3/UVI ACCUM UVIS F600LP 1 1400 S PATTERN 3 1-2; PAR 2 EPHF2 S see below WITH 1 (5905 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY ACS/WFC ACCUM WFC F814W 1 1350 S see below (5278 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 SN-2011FE-C WFC3/IR MULTIAC IR F160W SAMP-SEQ=STEP100, NSAMP=13 1 DEF PATTERN 2 3-6; PAR 4 EPHF2 CUM (1398.465 WITH 3 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY ACS/WFC ACCUM WFC F658N FLASH=15 1 440 S see below (1143 S) Comments: Added 15 e- flash to avoid CTE effects. ETC estimated an electron count of 5.5 e- given the filter, adjusted exp time of each exposure, RA and Dec, and rough date of the exposures. ------------------------------------------------------------------------------------------------------------------------------------ 5 SN-2011FE-C WFC3/IR MULTIAC IR F110W SAMP-SEQ=STEP100, NSAMP=14 1 DEF PAR 6 WITH 5 EPHF2 CUM (1598.466 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY ACS/WFC ACCUM WFC F658N FLASH=13 1 440 S see below (1398.5 S) Comments: Added 13 e- flash to avoid CTE effects. ETC estimated an electron count of 7 e- given the filter of each exposure, adjusted exp time, RA and Dec, and rough date of the exposures. ------------------------------------------------------------------------------------------------------------------------------------ 13737( 8) - 07-May-2015 13:50:17 - [ 15] 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 | ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN-2011FE-CEPHF2 1 WFC3/UVI ACCUM UVIS F600LP 1 none none none 1 1429.0 S S SN-2011FE-CEPHF2 1 WFC3/UVI ACCUM UVIS F600LP 2 none none none 1 1429.0 S S SN-2011FE-CEPHF2 1 WFC3/UVI ACCUM UVIS F600LP 3 none none none 2 1520.0 S S SN-2011FE-CEPHF2 1 WFC3/UVI ACCUM UVIS F600LP 4 none none none 2 1527.0 S S ANY 2 ACS/WFC ACCUM WFC F814W 1 none none none 1 1350.0 S ANY 2 ACS/WFC ACCUM WFC F814W 2 none none none 1 1348.0 S ANY 2 ACS/WFC ACCUM WFC F814W 3 none none none 2 1490.0 S ANY 2 ACS/WFC ACCUM WFC F814W 4 none none none 2 1090.0 S SN-2011FE-CEPHF2 3 WFC3/IR MULTIAC IR F160W 1 none none none 3 N/A CUM SN-2011FE-CEPHF2 3 WFC3/IR MULTIAC IR F160W 2 none none none 3 N/A CUM ANY 4 ACS/WFC ACCUM WFC F658N 1 none none none 3 546.0 S ANY 4 ACS/WFC ACCUM WFC F658N 2 none none none 3 597.0 S SN-2011FE-CEPHF2 5 WFC3/IR MULTIAC IR F110W 1 none none none 3 N/A CUM SN-2011FE-CEPHF2 5 WFC3/IR MULTIAC IR F110W 2 none none none 3 N/A CUM ANY 6 ACS/WFC ACCUM WFC F658N 1 none none none 3 699.0 S ANY 6 ACS/WFC ACCUM WFC F658N 2 none none none 3 699.5 S 13737( 8) - 07-May-2015 13:50:17 - [ 16] Summary Form for Proposal 13737 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR, UVIS, WFC ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC, WFC3/IR, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=13, FLASH=15, FLASH=5.0, NSAMP=13, NSAMP=14, SAMP-SEQ=STEP100 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 01-OCT-2014:00:00:00 AND 20-OCT-2014:00:00:00, BETWEEN 10-JUL-2015:00:00:00 AND 25-JUL-2015:00:00:00, BETWEEN 25-MAR-2015:00:00:00 AND 09-APR-2015:00:00:00, GS ACQ SCENARIO BASE1B3, ON HOLD , ORIENT 106D TO 113 D, ORIENT 162D TO 178 D, ORIENT 18D TO 53 D, PAR 10 WITH 9, PAR 2 WITH 1, PAR 4 WITH 3, PAR 6 WITH 5, PAR 8 WITH 7, PATTERN 1 1-2, PATTERN 1 1-6, PATTERN 1 3-6, PATTERN 2 3-6, PATTERN 2 7-10, PATTERN 3 1-2, PATTERN 3 1-4 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F110W, F160W, F435W, F438W, F555W, F600LP, F658N, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names ANY, SN-2011FE-CEPHF1, SN-2011FE-CEPHF2, SN-2011FE-OUTER ------------------------------------------------------------------------------------------------------------------------------------