SPECTROPOLARIMETRY OF EXTREMELY LUMINOUS TYPE Ia SUPERNOVA 2009dc: NEARLY SPHERICAL EXPLOSION OF SUPER-CHANDRASEKHAR MASS WHITE DWARF

@article{Tanaka2009SPECTROPOLARIMETRYOE,
  title={SPECTROPOLARIMETRY OF EXTREMELY LUMINOUS TYPE Ia SUPERNOVA 2009dc: NEARLY SPHERICAL EXPLOSION OF SUPER-CHANDRASEKHAR MASS WHITE DWARF},
  author={Masaomi Tanaka and Koji S. Kawabata and Masayuki Yamanaka and Keiichi Maeda and Takashi Hattori and Kentaro Aoki and Ken’ichi Nomoto and Masanori Iye and Toshiyuki Sasaki and P. A. Mazzali and Elena Pian},
  journal={The Astrophysical Journal},
  year={2009},
  volume={714},
  pages={1209-1216}
}
We present the first spectropolarimetric observations of a candidate of super-Chandrasekhar mass Type Ia supernova (SN): SN 2009dc. The observations were performed at 5.6 and 89.5 days after the B-band maximum. The data taken at the later epoch are used to determine the interstellar polarization. Continuum polarization is found to be small (<0.3%), indicating that the explosion is nearly spherically symmetric. This fact suggests that a very aspherical explosion is not a likely scenario for SN… Expand
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