624 citations · 6.1k across the 80 of their papers we have counts for
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astro-ph1998★ 141 cited
Enrichment of the r-process Element Europium in the Galactic Halo
Yuhri Ishimaru, Shinya Wanajo
We investigate the enrichment of europium, as a representative of r-process elements, in the Galactic halo. In present chemical evolution models, stars are assumed to be formed thr…
astro-ph1998★ 158 cited
Evolution of 3-9 Mo Stars for Z=0.001 - 0.03 and Metallicity Effects on Type Ia Supernovae
Hideyuki Umeda, Ken'ichi Nomoto, Hitoshi Yamaoka +1
Recent observations have revealed that Type Ia supernovae (SNe Ia) are not perfect standard candles but show some variations in their absolute magnitudes, light curve shapes, and s…