Our neighbour suns: high-dispersion spectroscopy of solar-type stars

Astronomy and Astrophysics – Astrophysics

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Solar-Type Stars

Scientific paper

In spite of its high efficiency, the targets of the new HIDES spectrograph at Okayama Astrophysical Observatory are restricted to comparatively bright stars due to the limited light collectivity of the 188 cm telescope. Given this situation, studying nearby solar-type stars is counted as an important task to be promoted with HIDES, by which we can also learn about "our Sun" from a different perspective. In this article, the history of the spectroscopic abundance study is briefly reviewed first, where our Sun always played a significant role. Then, with a particular attention to the question "is our Sun a normal star?," the recent progress of the spectroscopic study of Sun-like stars is described along with the new HIDES results of our own.

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