13613( 2) - 21-Nov-2013 19:12:41 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 13613 Version: 2 Check-in Time: 21-Nov-2013 19:12:41 STScI Edit Number: 0 Title Dust to Dust: Monitoring the Evolution of the New Class of Self-Obscured Transients ------------------------------------------------------------------------------------ Type Cycle GO 21 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. C. S. Kochanek The Ohio State University Y CoI: Dr. Krzysztof Z. Stanek The Ohio State University N CoI: Dr. Todd A. Thompson The Ohio State University N CoI: Dr. Jose Luis Prieto Princeton University N ------------------------------------------------------------------------------------ Abstract The goal of this proposal is to understand a new class of explosive transients associated with the most massive AGB stars. Today these sources are true creatures of the mid-IR, being optically invisible and very faint in the near-IR. By coarsely monitoring them with Spitzer and HST we can examine the evolution of the luminosity, dust optical depth and dust radius/temperature at a key time when their observed fluxes are approaching those of the two known progenitors. At its very simplest, they must stop fading in the next ~year or they are the theoretically expected but observationally missing electron capture supernovae (ecSNe). The only way to find out is to continue monitoring the evolution of the four closest examples. ------------------------------------------------------------------------------------ Observations Description ------------------------ Each observation is done as a 3 point line dither in F160W and F110W combined with one extra F110W exposure -- the latter is adjusted to come as close as possible to using the available time Each of the images is done as a STEP100 sequence Two of the targets, SN2002bu and SN2008S, are not placed at field center, but offset. In particular, this places another old SN in the field of view of the SN2008S observations. These pointings have all been used successfully in previous WFC3/IR observations of the targets. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- 13613( 2) - 21-Nov-2013 19:12:41 - [ 2] ------------------------------------------------------------------------------------ 13613( 2) - 21-Nov-2013 19:12:41 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 SN-1999BW STAR, SUPERNOVA TYPE II RA=10H19M46.8100S +/- 0.1", J2000 V = 17.8 DEC=+45D31'35.00" +/- 0.1" Reference Frame: Other: NED Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 2 SN-2002BU STAR, SUPERNOVA TYPE II RA=12H17M35.4000S +/- 0.1", J2000 V = 15.5 DEC=+45D38'21.00" +/- 0.1" Reference Frame: Other: NED Comments: Shifted to include more of the galaxy from12 17 37.1800 +45 38 47.40 ------------------------------------------------------------------------------------------------------------------------------------ 3 SN-2008S STAR, SUPERNOVA TYPE II RA=20H34M46.5000S +/- 0.1", J2000 V = 18.79 DEC=+60D06'41.00" +/- 0.1" Reference Frame: Other: NED Comments: Shifted to capture several SN from 20 34 45.3300 +60 05 58.40 ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC-300OT STAR, SUPERNOVA TYPE II RA=00H54M34.2000S +/- 0.1", J2000 V = 2.2 DEC=-37D38'28.60" +/- 0.1" Reference Frame: Other: NED Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 13613( 2) - 21-Nov-2013 19:12:41 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-LINE-3PT Pattern_Purpose DITHER Number_Of_Points 3 Point_Spacing 0.605 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 41.788 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 13613( 2) - 21-Nov-2013 19:12:41 - [ 5] Visit: 01 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SN-1999BW WFC3/IR MULTIAC IR F160W NSAMP=11, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1-2 CUM (1497.696 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN-1999BW WFC3/IR MULTIAC IR F110W NSAMP=9, SAMP-SEQ=STEP100 1 DEF CUM (897.694 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 SN-1999BW WFC3/IR MULTIAC IR F110W NSAMP=9, SAMP-SEQ=STEP100 1 DEF CUM (299.231 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-1999BW 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM SN-1999BW 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM SN-1999BW 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM SN-1999BW 2 WFC3/IR MULTIAC IR F110W 1 none none none 1 N/A CUM SN-1999BW 2 WFC3/IR MULTIAC IR F110W 2 none none none 1 N/A CUM SN-1999BW 2 WFC3/IR MULTIAC IR F110W 3 none none none 1 N/A CUM SN-1999BW 3 WFC3/IR MULTIAC IR F110W none none none none 1 N/A CUM 13613( 2) - 21-Nov-2013 19:12:41 - [ 6] Visit: 02 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SN-2002BU WFC3/IR MULTIAC IR F160W NSAMP=11, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1-2 CUM (1497.696 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN-2002BU WFC3/IR MULTIAC IR F110W NSAMP=9, SAMP-SEQ=STEP100 1 DEF CUM (897.694 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 SN-2002BU WFC3/IR MULTIAC IR F110W NSAMP=9, SAMP-SEQ=STEP100 1 DEF CUM (299.231 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-2002BU 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM SN-2002BU 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM SN-2002BU 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM SN-2002BU 2 WFC3/IR MULTIAC IR F110W 1 none none none 1 N/A CUM SN-2002BU 2 WFC3/IR MULTIAC IR F110W 2 none none none 1 N/A CUM SN-2002BU 2 WFC3/IR MULTIAC IR F110W 3 none none none 1 N/A CUM SN-2002BU 3 WFC3/IR MULTIAC IR F110W none none none none 1 N/A CUM 13613( 2) - 21-Nov-2013 19:12:41 - [ 7] 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SN-2008S WFC3/IR MULTIAC IR F160W NSAMP=11, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1-2 CUM (1497.696 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN-2008S WFC3/IR MULTIAC IR F110W NSAMP=9, SAMP-SEQ=STEP100 1 DEF CUM (897.694 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 SN-2008S WFC3/IR MULTIAC IR F110W NSAMP=10, SAMP-SEQ=STEP100 1 DEF CUM (399.232 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-2008S 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM SN-2008S 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM SN-2008S 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM SN-2008S 2 WFC3/IR MULTIAC IR F110W 1 none none none 1 N/A CUM SN-2008S 2 WFC3/IR MULTIAC IR F110W 2 none none none 1 N/A CUM SN-2008S 2 WFC3/IR MULTIAC IR F110W 3 none none none 1 N/A CUM SN-2008S 3 WFC3/IR MULTIAC IR F110W none none none none 1 N/A CUM 13613( 2) - 21-Nov-2013 19:12:41 - [ 8] Visit: 04 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-300OT WFC3/IR MULTIAC IR F160W NSAMP=11, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1-2 CUM (1497.696 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-300OT WFC3/IR MULTIAC IR F110W NSAMP=9, SAMP-SEQ=STEP100 1 DEF CUM (897.694 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC-300OT WFC3/IR MULTIAC IR F110W NSAMP=8, SAMP-SEQ=STEP100 1 DEF CUM (199.231 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-300OT 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM NGC-300OT 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM NGC-300OT 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM NGC-300OT 2 WFC3/IR MULTIAC IR F110W 1 none none none 1 N/A CUM NGC-300OT 2 WFC3/IR MULTIAC IR F110W 2 none none none 1 N/A CUM NGC-300OT 2 WFC3/IR MULTIAC IR F110W 3 none none none 1 N/A CUM NGC-300OT 3 WFC3/IR MULTIAC IR F110W none none none none 1 N/A CUM 13613( 2) - 21-Nov-2013 19:12:41 - [ 9] Summary Form for Proposal 13613 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR ------------------------------------------------------------------------------------------------------------------------------------ Opmodes MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=10, NSAMP=11, NSAMP=8, NSAMP=9, SAMP-SEQ=STEP100 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 1 1-2 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F110W, F160W ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC-300OT, SN-1999BW, SN-2002BU, SN-2008S ------------------------------------------------------------------------------------------------------------------------------------