205 citations · 1.4k across the 30 of their papers we have counts for
3 papers · 1 filter
Evidence for Spectropolarimetric Diversity in Type Ia Supernovae
Douglas C. Leonard, Weidong Li, Alexei V. Filippenko +2
We present single-epoch, post-maximum spectropolarimetry of four Type Ia supernovae (SNe Ia) that span a range of spectral and photometric properties: SN 2002bf and SN 2004dt exhib…
Interstellar Polarization and the Position Angle Orientations of Seyfert 1 Galaxies
Jennifer L. Hoffman, Ryan Chornock, Douglas C. Leonard +1
We comment on recent spectropolarimetric studies that compare the observed polarization position angles (PAs) of Seyfert 1 galaxies near H alpha with the observed orientations of t…
A Definitive Measurement of Time Dilation in the Spectral Evolution of the Moderate-Redshift Type Ia Supernova 1997ex
R. J. Foley, A. V. Filippenko, D. C. Leonard +3
We have obtained high-quality Keck optical spectra at three epochs of the Type Ia supernova 1997ex, whose redshift z is 0.361. The elapsed calendar time between the first two spect…