14146( 3) - 12-May-2016 21:29:53 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 14146 Version: 3 Check-in Time: 12-May-2016 21:29:53 STScI Edit Number: 1 Title Light Echoes and Environment of SN 2014J in M82 ------------------------------------------------------------------------------------ Type Cycle GO 23 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Stephen S. Lawrence Hofstra University Y CoI: Dr. Arlin Crotts Columbia University in the City of New N York CoI: Dr. Jeremiah P. Ostriker Columbia University in the City of New N York CoI: Dr. Greg Bryan Columbia University in the City of New N York CoI: Dr. Ben E. K. Sugerman Goucher College N ------------------------------------------------------------------------------------ Abstract Type Ia SN 2014J exploded in the nearby M82 = NGC 3032, reaching V maximum light around 2014 February 5, the closest SN since 1987 and likely the closest SN Ia since 1885. Recent HST/WFC3 imaging (2014 September 5 and 2015 February 2) of M82 in the vicinity of SN 2014J reveals a light echo at radius 0.6 arcsec from SN 2014J (or 13 pc in M82), meaning a z distance of 330 pc closer t0 Earth than the SN. Additional echoes reside at a smaller radii of about 0.3-0.4 arcsec (or z = 80-160 pc). HST observations of SN 2014J's echoes over the next few years will allow us to map and explore further star formaion in M82, and rhe 3-D structure of gas and dust. Echoes in the near future might also reveal circumstellar structure around SN 2014J's progenitor star. This offers us a unique opportunity to study the environment of SNe Ia, here at a level of detail several times better than any other, farther SN Ia observed by HST. M82 is a special galaxy in terms of star formation activity, and SN 2014J offers a special probe of this galaxy since it is a Ia, not core collapse SN, so more likely to sample the structure of M82 more typically, rather than centered on a region recently producing massive stars, such as a core-collapse progenitor. We describe how the light echo mapping that will be provided by the proposed observations will produce a high-resolution, three-dimensional view of a large part of M82, and how this can be directly compared to models of the interstellar medium to learn how star formation feeds back into the gaseous structure of galaxies. This comparison is arguably only possible with SN light echoes, with SN 2014J providing the most useful Ia example. ------------------------------------------------------------------------------------ Observations Description ------------------------ The prime purpose of these observations is to obtain unsaturated or only mildly saturated images primarily in broad bands in which the field containing SN 2014J was imaged prior to the SN outburst. These bands are F438W, F555W and F814W. Exposure times will need to be adjust to provide these, given the somewhat unpredictable variable nature of the source. In addition there are several narrow bands observed before outburst that can be compared to look at new extended sources in atomic line transitions (F487N, F502N, F658N, F673N). 14146( 3) - 12-May-2016 21:29:53 - [ 2] For these we need if possible to acheive satisfactory S/N ratio in the background galaxy surface brightness. Finally, we will use some small fraction of exposure time to extended the UV light curve past maximum light and look for extended UV reflection for this uique object (F218W, F225W, F275W, F336W). ------------------------------------------------------------------------------------ 14146( 3) - 12-May-2016 21:29:53 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 SN2014J STAR, SUPERNOVA TYPE IA RA=09H55M42.1400S +/- 0.1", J2000 V = 10 +/- 1 DEC=+69D40'26.00" +/- 0.1" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 14146( 3) - 12-May-2016 21:29:53 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ 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 ------------------------------------------------------------------------------------------------------------------------------------ 14146( 3) - 12-May-2016 21:29:53 - [ 5] Visit: 01 (sn2014j-5th) Visit Requirements: BEFORE 01-AUG-2015:00:00:00 On Hold Comments: Additional Comments: This Visit 01 defines the data for the fifth epoch of observations of the light echoes of SN2014J in M82. Epochs 1--4 were taken during GO 13626. 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 SN2014J WFC3/UVI ACCUM UVIS2-C51 F555W FLASH=10 1 36 S (144 GS ACQ SCENARIO BASE1B3; S 2C-SUB S) PATTERN 3 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 SN2014J WFC3/UVI ACCUM UVIS2-C51 F555W FLASH=10 1 36 S (144 PATTERN 3 2 S 2C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 3 SN2014J WFC3/UVI ACCUM UVIS2-C51 F555W FLASH=10 1 36 S (144 PATTERN 3 3 S 2C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 4 SN2014J WFC3/UVI ACCUM UVIS2-C51 F438W FLASH=11 1 112 S (448 PATTERN 3 4 S 2C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 5 SN2014J WFC3/UVI ACCUM UVIS2-C51 F438W FLASH=11 1 112 S (448 PATTERN 3 5 S 2C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 6 SN2014J WFC3/UVI ACCUM UVIS2-C51 F438W FLASH=11 1 112 S (448 PATTERN 3 6 S 2C-SUB 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2014J 1 WFC3/UVI ACCUM UVIS2-C5 F555W 1 none none none 1 N/A S 12C-SUB SN2014J 1 WFC3/UVI ACCUM UVIS2-C5 F555W 2 none none none 1 N/A S 12C-SUB SN2014J 1 WFC3/UVI ACCUM UVIS2-C5 F555W 3 none none none 1 N/A S 12C-SUB SN2014J 1 WFC3/UVI ACCUM UVIS2-C5 F555W 4 none none none 1 N/A S 12C-SUB SN2014J 2 WFC3/UVI ACCUM UVIS2-C5 F555W 1 none none none 1 N/A S 12C-SUB SN2014J 2 WFC3/UVI ACCUM UVIS2-C5 F555W 2 none none none 1 N/A S 12C-SUB SN2014J 2 WFC3/UVI ACCUM UVIS2-C5 F555W 3 none none none 1 N/A S 12C-SUB SN2014J 2 WFC3/UVI ACCUM UVIS2-C5 F555W 4 none none none 1 N/A S 12C-SUB 14146( 3) - 12-May-2016 21:29:53 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2014J 3 WFC3/UVI ACCUM UVIS2-C5 F555W 1 none none none 1 N/A S 12C-SUB SN2014J 3 WFC3/UVI ACCUM UVIS2-C5 F555W 2 none none none 1 N/A S 12C-SUB SN2014J 3 WFC3/UVI ACCUM UVIS2-C5 F555W 3 none none none 1 N/A S 12C-SUB SN2014J 3 WFC3/UVI ACCUM UVIS2-C5 F555W 4 none none none 1 N/A S 12C-SUB SN2014J 4 WFC3/UVI ACCUM UVIS2-C5 F438W 1 none none none 1 N/A S 12C-SUB SN2014J 4 WFC3/UVI ACCUM UVIS2-C5 F438W 2 none none none 1 N/A S 12C-SUB SN2014J 4 WFC3/UVI ACCUM UVIS2-C5 F438W 3 none none none 1 N/A S 12C-SUB SN2014J 4 WFC3/UVI ACCUM UVIS2-C5 F438W 4 none none none 1 N/A S 12C-SUB SN2014J 5 WFC3/UVI ACCUM UVIS2-C5 F438W 1 none none none 1 N/A S 12C-SUB SN2014J 5 WFC3/UVI ACCUM UVIS2-C5 F438W 2 none none none 1 N/A S 12C-SUB SN2014J 5 WFC3/UVI ACCUM UVIS2-C5 F438W 3 none none none 1 N/A S 12C-SUB SN2014J 5 WFC3/UVI ACCUM UVIS2-C5 F438W 4 none none none 1 N/A S 12C-SUB SN2014J 6 WFC3/UVI ACCUM UVIS2-C5 F438W 1 none none none 1 N/A S 12C-SUB SN2014J 6 WFC3/UVI ACCUM UVIS2-C5 F438W 2 none none none 1 N/A S 12C-SUB SN2014J 6 WFC3/UVI ACCUM UVIS2-C5 F438W 3 none none none 1 N/A S 12C-SUB SN2014J 6 WFC3/UVI ACCUM UVIS2-C5 F438W 4 none none none 1 N/A S 12C-SUB 14146( 3) - 12-May-2016 21:29:53 - [ 7] Visit: 02 (sn2014j-6th) Visit Requirements: BETWEEN 01-JAN-2016 AND 31-MAR-2016 On Hold Comments: Additional Comments: This Visit 02 defines the data for the sixth epoch of observations of the light echoes of SN2014J in M82. Epochs 1--4 were taken during GO 13626, Epoch 5 was taken during Visit 01. 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 SN2014J WFC3/UVI ACCUM UVIS2-C51 F555W FLASH=10 1 36 S (144 GS ACQ SCENARIO BASE1B3; S 2C-SUB S) PATTERN 3 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 SN2014J WFC3/UVI ACCUM UVIS2-C51 F555W FLASH=10 1 36 S (144 PATTERN 3 2 S 2C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 3 SN2014J WFC3/UVI ACCUM UVIS2-C51 F555W FLASH=10 1 36 S (144 PATTERN 3 3 S 2C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 4 SN2014J WFC3/UVI ACCUM UVIS2-C51 F438W FLASH=11 1 112 S (448 PATTERN 3 4 S 2C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 5 SN2014J WFC3/UVI ACCUM UVIS2-C51 F438W FLASH=11 1 112 S (448 PATTERN 3 5 S 2C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 6 SN2014J WFC3/UVI ACCUM UVIS2-C51 F438W FLASH=11 1 112 S (448 PATTERN 3 6 S 2C-SUB 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2014J 1 WFC3/UVI ACCUM UVIS2-C5 F555W 1 none none none 1 N/A S 12C-SUB SN2014J 1 WFC3/UVI ACCUM UVIS2-C5 F555W 2 none none none 1 N/A S 12C-SUB SN2014J 1 WFC3/UVI ACCUM UVIS2-C5 F555W 3 none none none 1 N/A S 12C-SUB SN2014J 1 WFC3/UVI ACCUM UVIS2-C5 F555W 4 none none none 1 N/A S 12C-SUB SN2014J 2 WFC3/UVI ACCUM UVIS2-C5 F555W 1 none none none 1 N/A S 12C-SUB SN2014J 2 WFC3/UVI ACCUM UVIS2-C5 F555W 2 none none none 1 N/A S 12C-SUB SN2014J 2 WFC3/UVI ACCUM UVIS2-C5 F555W 3 none none none 1 N/A S 12C-SUB SN2014J 2 WFC3/UVI ACCUM UVIS2-C5 F555W 4 none none none 1 N/A S 12C-SUB 14146( 3) - 12-May-2016 21:29:53 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2014J 3 WFC3/UVI ACCUM UVIS2-C5 F555W 1 none none none 1 N/A S 12C-SUB SN2014J 3 WFC3/UVI ACCUM UVIS2-C5 F555W 2 none none none 1 N/A S 12C-SUB SN2014J 3 WFC3/UVI ACCUM UVIS2-C5 F555W 3 none none none 1 N/A S 12C-SUB SN2014J 3 WFC3/UVI ACCUM UVIS2-C5 F555W 4 none none none 1 N/A S 12C-SUB SN2014J 4 WFC3/UVI ACCUM UVIS2-C5 F438W 1 none none none 1 N/A S 12C-SUB SN2014J 4 WFC3/UVI ACCUM UVIS2-C5 F438W 2 none none none 1 N/A S 12C-SUB SN2014J 4 WFC3/UVI ACCUM UVIS2-C5 F438W 3 none none none 1 N/A S 12C-SUB SN2014J 4 WFC3/UVI ACCUM UVIS2-C5 F438W 4 none none none 1 N/A S 12C-SUB SN2014J 5 WFC3/UVI ACCUM UVIS2-C5 F438W 1 none none none 1 N/A S 12C-SUB SN2014J 5 WFC3/UVI ACCUM UVIS2-C5 F438W 2 none none none 1 N/A S 12C-SUB SN2014J 5 WFC3/UVI ACCUM UVIS2-C5 F438W 3 none none none 1 N/A S 12C-SUB SN2014J 5 WFC3/UVI ACCUM UVIS2-C5 F438W 4 none none none 1 N/A S 12C-SUB SN2014J 6 WFC3/UVI ACCUM UVIS2-C5 F438W 1 none none none 1 N/A S 12C-SUB SN2014J 6 WFC3/UVI ACCUM UVIS2-C5 F438W 2 none none none 1 N/A S 12C-SUB SN2014J 6 WFC3/UVI ACCUM UVIS2-C5 F438W 3 none none none 1 N/A S 12C-SUB SN2014J 6 WFC3/UVI ACCUM UVIS2-C5 F438W 4 none none none 1 N/A S 12C-SUB 14146( 3) - 12-May-2016 21:29:53 - [ 9] Visit: 03 (sn2014j-7th) Visit Requirements: BETWEEN 01-JUL-2016 AND 30-SEP-2016 On Hold Comments: Additional Comments: This Visit 03 defines the data for the seventh epoch of observations of the light echoes of SN2014J in M82. Epochs 1--4 were taken during GO 13626, Epochs 5 and 6 were taken during Visits 01 and 02, respectively. UPDATE (added 12 May 2016): Based on the strength of the light echoes detected in Visits 01 and 02, and the fading rate of the supernova, the patterns and exposure times for this Visit were rebalanced to increase the total exposure times in F438W and F555W without significantly decreasing the total times in F502N and F658N. The error warning regarding the FLASH level for the F438W exposures (03.002) is not relevant, due to the diffuse background of M 82 in the vicinity of SN 2014J. 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 SN2014J WFC3/UVI ACCUM UVIS2-C51 F555W 1 430 S GS ACQ SCENARIO BASE1B3; S 2C-SUB (1720 S) PATTERN 3 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 SN2014J WFC3/UVI ACCUM UVIS2-C51 F438W 1 605 S PATTERN 3 2 S 2C-SUB (2420 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 SN2014J WFC3/UVI ACCUM UVIS2-C51 F502N FLASH=11 1 625 S PATTERN 3 3 S 2C-SUB (2500 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 SN2014J WFC3/UVI ACCUM UVIS2-C51 F658N FLASH=11 1 610 S PATTERN 3 4 S 2C-SUB (2440 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2014J 1 WFC3/UVI ACCUM UVIS2-C5 F555W 1 none none none 1 N/A S 12C-SUB SN2014J 1 WFC3/UVI ACCUM UVIS2-C5 F555W 2 none none none 1 N/A S 12C-SUB SN2014J 1 WFC3/UVI ACCUM UVIS2-C5 F555W 3 none none none 1 N/A S 12C-SUB SN2014J 1 WFC3/UVI ACCUM UVIS2-C5 F555W 4 none none none 1 N/A S 12C-SUB SN2014J 2 WFC3/UVI ACCUM UVIS2-C5 F438W 1 none none none 1 N/A S 12C-SUB SN2014J 2 WFC3/UVI ACCUM UVIS2-C5 F438W 2 none none none 1 N/A S 12C-SUB SN2014J 2 WFC3/UVI ACCUM UVIS2-C5 F438W 3 none none none 2 N/A S 12C-SUB SN2014J 2 WFC3/UVI ACCUM UVIS2-C5 F438W 4 none none none 2 N/A S 12C-SUB 14146( 3) - 12-May-2016 21:29:53 - [ 10] 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2014J 3 WFC3/UVI ACCUM UVIS2-C5 F502N 1 none none none 2 N/A S 12C-SUB SN2014J 3 WFC3/UVI ACCUM UVIS2-C5 F502N 2 none none none 2 N/A S 12C-SUB SN2014J 3 WFC3/UVI ACCUM UVIS2-C5 F502N 3 none none none 2 N/A S 12C-SUB SN2014J 3 WFC3/UVI ACCUM UVIS2-C5 F502N 4 none none none 3 N/A S 12C-SUB SN2014J 4 WFC3/UVI ACCUM UVIS2-C5 F658N 1 none none none 3 N/A S 12C-SUB SN2014J 4 WFC3/UVI ACCUM UVIS2-C5 F658N 2 none none none 3 N/A S 12C-SUB SN2014J 4 WFC3/UVI ACCUM UVIS2-C5 F658N 3 none none none 3 N/A S 12C-SUB SN2014J 4 WFC3/UVI ACCUM UVIS2-C5 F658N 4 none none none 3 N/A S 12C-SUB 14146( 3) - 12-May-2016 21:29:53 - [ 11] Summary Form for Proposal 14146 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS2-C512C-SUB ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=10, FLASH=11 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BEFORE 01-AUG-2015:00:00:00, BETWEEN 01-JAN-2016 AND 31-MAR-2016, BETWEEN 01-JUL-2016 AND 30-SEP-2016, GS ACQ SCENARIO BASE1B3, PATTERN 3 1, PATTERN 3 2, PATTERN 3 3, PATTERN 3 4, PATTERN 3 5, PATTERN 3 6 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F438W, F502N, F555W, F658N ------------------------------------------------------------------------------------------------------------------------------------ Target Names SN2014J ------------------------------------------------------------------------------------------------------------------------------------