399 citations · 1.1k across the 8 of their papers we have counts for
Showing 2009Show all
2 papers · 1 filter
astro-ph.HE2009★ 162 cited
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…
astro-ph.SR2009★ 95 cited
Measuring tiny mass accretion rates onto young brown dwarfs
Gregory J. Herczeg, Kelle L. Cruz, Lynne A. Hillenbrand
We present low-resolution Keck I/LRIS spectra spanning from 3200-9000 A of nine young brown dwarfs and three low-mass stars in the TW Hya Association and in Upper Sco. The optical…