Polarimetry of SN 2014J in M82 as a Probe of Its Dusty Environment

0 Assigned ID: 886 ----- Attempting Submission 1 (Fri Apr 11 21:41:14 GMT 2014) ----- HST Phase I Proposal 886 (phase1-DD.apt) successfully submitted. ----- Attempting Submission 2 (Fri Apr 11 22:03:51 GMT 2014) ----- HST Phase I Proposal 886 (phase1-DD.apt) successfully submitted. ----- Attempting Submission 3 (Fri Apr 11 22:41:55 GMT 2014) ----- HST Phase I Proposal 886 (phase1-DD.apt) successfully submitted. ----- Attempting Submission 4 (Fri Apr 11 23:43:20 GMT 2014) ----- HST Phase I Proposal 886 (phase1-DD.apt) successfully submitted. ----- Attempting Submission 5 (Fri Apr 11 23:55:57 GMT 2014) ----- I have modified polariod used in Pol1(V1) exposure 7, 8 and 9. I am able to make exposure 7 to a dither pattern, but short of exposure time on exposure 8 and 9. The exposure time is short, and the degree of polarization is high (~ 3-6%), I expect the data to be still useful, unless there is a direc cosmic ray hit. 11246514 ----- Attempting Submission 1 (Thu Jul 24 14:16:48 GMT 2014) ----- HST Phase II Proposal 13717 (phaseII.2.apt) successfully submitted. ----- Attempting Submission 2 (Thu Jul 24 14:39:09 GMT 2014) ----- HST Phase II Proposal 13717 (phaseII.4.apt) successfully submitted. ----- Attempting Submission 3 (Thu Jul 24 15:36:45 GMT 2014) ----- HST Phase II Proposal 13717 (phaseII.4.apt) successfully submitted. ----- Attempting Submission 4 (Wed Oct 01 17:17:10 GMT 2014) ----- Polarimetry of SN 2014J in M82 as a Probe of Its Dusty Environment Late time polarimetry can effectively probe the circumstellar (CS) dust environment of SNe Ia. We propose to acquire imaging polarimetry of SN 2014J at three epochs between 200-400 days after the SN explosion. The delayed light from optical maximum may be scattered into the line of sight and reveal the scattering dust through polarization. Light echoes from interstellar dust at very large distances (> 10pc) from the SN will not be highly polarized in these observations due to the small scattering angle involved. Polarimetry at late time is thus an unambegeous probe of CS dust very close to the SN (at distances ~ 1 light year). Observations of the illusive CS matter is critical in constraining the progenitor systems of SNIa. This program attempts to acquire imaging polarization of SN2014J using ACS/WFC. We intend to observe at two separate epochs at around Nov, 2014, and Apr 15 2015. The polarization data will be observed in three filters: F475W, F606W, and F775W. For each filter three polarizers POL0V, POL120V, and POL60V are used to aqcuire a complete polarization data set. Multiple exposures are required for cosmic ray rejection. ISM AND CIRCUMSTELLAR MATTER Default false false false false false SUPPORTED STAR SUPERNOVA TYPE IA This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 ACS/WFC Imaging No Yes F475W ACS/WFC Imaging No Yes F555W ACS/WFC Imaging No Yes F625W ACS/WFC Imaging No Yes F775W POS-TARG DITHER 3.011 LINE false false 3 85.28 ACS-WFC-DITHER-LINE 1

false

POS-TARG DITHER 3.011 LINE false false 2 85.28 ACS-WFC-DITHER-LINE 2

false

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