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Subaru Telescope

A Ninth-Magnitude Messenger from the Early Universe
20 Ago 2009 - 23:44

Old stars are keys to understanding the nature of the first stars and the earliest stages of the formation of the universe. Observations with the Subaru Telescope, fitted with its High Dispersion Spectrograph (HDS), have yielded data about the chemical composition of an old, bright star—BD+44 493— that shed light on how the early stars may have developed during the infancy of the universe.

Astronomers successfully obtained images of an extra-solar planet
21 Maggio 2009 - 15:21

Are there any planetary systems like our own in the Universe? Is there life out there? Astronomers now try to answer these long-standing philosophical questions scientifically. The extra-solar planets have been increasingly found, and about 350 planets are known so far. However, most of them were discovered in indirect ways such as the radial velocity method finding the wobble of the parent star due to planets (Doppler shifts in the star’s spectra).

Discovery of the Most Metal-deficient Star Ever Found: Studying Nucleosynthesis Signatures of the First Stars
13 Apr 2005 - 10:11

An international team of astronomers reports the discovery of a star, HE1327-2326, which sets a new record for being the most heavy element-deficient star ever found. Its chemical composition, as measured with the Subaru Telescope High Dispersion Spectrograph, provides evidence of nucleosynthesis by the first generations of stars in the universe, and places new constraints on their masses and metal enrichment history in the very early universe.

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