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Spectropolarimetry of the Type Ia SN 2007sr Two Months After Maximum Light

We present late time spectropolarimetric observations of SN 2007sr, obtained with the VLT telescope at ESO Paranal Observatory when the object was 63 days after maximum light. The late time spectrum displays strong line polarization in the CaII absorption features. SN 2007sr adds to the case of some normal Type Ia SNe that show high line polarization or repolarization at late times, a fact that might be connected with the presence of high velocity features at early times.

preprint2012arXivOpen access
P. ZelayaJ. R. QuinnD. BaadeA. ClocchiattiP. HöflichJ. MaundF. PatatL. WangJ. C. Wheeler
astro-ph.HEastro-ph.SR
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Open access9 authors2 topics
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P. ZelayaJ. R. QuinnD. BaadeA. ClocchiattiP. HöflichJ. MaundF. PatatL. WangJ. C. Wheeler

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