318 citations · 2.5k across the 13 of their papers we have counts for
3 papers · 1 filter
Variable Sodium Absorption in a Low-Extinction Type Ia Supernova
Joshua D. Simon, Avishay Gal-Yam, Orly Gnat +18
Recent observations have revealed that some Type Ia supernovae exhibit narrow, time-variable Na I D absorption features. The origin of the absorbing material is controversial, but…
Improved Distances to Type Ia Supernovae with Two Spectroscopic Subclasses
Xiaofeng Wang, A. V. Filippenko, M. Ganeshalingam +10
We study the observables of 158 relatively normal Type Ia supernovae (SNe Ia) by dividing them into two groups in terms of the expansion velocity inferred from the absorption minim…
The First Positive Detection of Molecular Gas in a GRB Host Galaxy
J. X. Prochaska, Y. Sheffer, D. A. Perley +9
We report on strong H2 and CO absorption from gas within the host galaxy of gamma-ray burst (GRB) 080607. Analysis of our Keck/LRIS afterglow spectrum reveals a very large HI colum…