690 citations · 8.2k across the 104 of their papers we have counts for
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Self-enrichment in Omega Centauri
C. Ikuta, N. Arimoto
The origin of abundance spreads observed in omega Centauri is studied in the context of the self-enrichment scenario. Five chemical evolution models are constructed and are compare…
Gradients of Absorption Line Strengths in Elliptical Galaxies
Chiaki Kobayashi, Nobuo Arimoto
We have re-studied line-strength gradients of 80 elliptical galaxies. Typical metallicity gradients are d[Fe/H]/dlogr = -0.3. The metallicity gradients do not correlate with any ph…
A Rich Cluster of Galaxies Near the Quasar B2 1335+28 at z=1.1: Color Distribution and Star-Formation Properties
Ichi Tanaka, Toru Yamada, Alfonso Aragón-Salamanca +4
We previously reported a significant clustering of red galaxies (R-K=3.5--6) around the radio-loud quasar B2 1335+28 at z=1.086. In this paper, we establish the existence of a rich…
Metal Enrichment in the Early Galactic Halo
C. Ikuta, N. Arimoto
An early history of metal enrichment in the Galactic halo is studied. We investigate chemical inhomogeneity by using a stochastic chemical evolution model. The model confronts with…
Age and Dust Degeneracy for Starburst Galaxies Solved?
Toshinobu Takagi, Nobuo Arimoto, Vladas Vansevicius
A spectral evolution model of galaxies that includes both stellar and dust effects is newly built. xApplying the model to 22 nearby starburst galaxies, we have shown that far infra…