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Multi-Epoch Spectropolarimetry for a Sample of Type IIn Supernovae: Persistent Asymmetry in Dusty Circumstellar Material
Christopher Bilinski, Nathan Smith, G. Grant Williams +5
We present multi-epoch spectropolarimetry and spectra for a sample of 14 Type IIn supernovae (SNe IIn). We find that after correcting for likely interstellar polarization, SNe IIn…
Making Sense of Nothing
Douglas C. Leonard
A model of the optical light detected following the merger of two neutron stars reveals polarization to be a unique probe of the geometry of the kilonova explosion that accompanied…
Polarization signatures of a high-velocity scatterer in nebular-phase spectra of Type II supernovae
Luc Dessart, D. John Hillier, Douglas C. Leonard
Type II supernovae (SNe) often exhibit a linear polarization, arising from free-electron scattering, with complicated optical signatures, both in the continuum and in lines. Focusi…
Multiepoch VLT-FORS spectro-polarimetric observations of supernova 2012aw reveal an asymmetric explosion
Luc Dessart, Douglas C. Leonard, D. John Hillier +1
We present VLT-FORS spectropolarimetric observations of the type II supernova (SN) 2012aw taken at seven epochs during the photospheric phase, from 16 to 120d after explosion. We c…
The Type II-Plateau Supernova 2017eaw in NGC 6946 and Its Red Supergiant Progenitor
Schuyler D. Van Dyk, WeiKang Zheng, Justyn R. Maund +31
We present extensive optical photometric and spectroscopic observations, from 4 to 482 days after explosion, of the Type II-plateau (II-P) supernova (SN) 2017eaw in NGC 6946. SN 20…
Supernova 2017eaw: molecule and dust formation from infrared observations
Samaporn Tinyanont, Mansi M Kasliwal, Kelsie Krafton +15
We present infrared (IR) photometry and spectroscopy of the Type II-P SN 2017eaw and its progenitor in the nearby galaxy NGC 6946. Progenitor observations in the Ks band in 4 epoch…