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American Astronomical Society, Astronomical Journal, 2(145), p. 27, 2012

DOI: 10.1088/0004-6256/145/2/27

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

Journal article published in 2012 by P. Zelaya, J. R. Quinn, D. Baade, A. Clocchiatti, P. Höflich, J. Maund ORCID, F. Patat ORCID, L. Wang, J. C. Wheeler
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We present late-time spectropolarimetric observations of SN 2007sr, obtained with the Very Large Telescope at the ESO Paranal Observatory when the object was 63 days after maximum light. The late-time spectrum displays strong line polarization in the Ca II absorption features. SN 2007sr adds to the case of some normal Type Ia supernovae 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. © 2013. The American Astronomical Society. All rights reserved.