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- W1962852298 abstract "We report on the spectroscopic evidence for the nearby, bright and supposedly single F4V star λ Ara as a binary system. The basic observational tracer is a discrepancy with the Hipparcos-based astrometric surface gravity as opposed to the spectroscopically derived value from the pressure-dependent Mg Ib triplet lines. We demonstrate how this discrepancy can be met with an equal-mass secondary hidden in the light of the star's considerable projected rotational velocity vsin i = 15.5 ± 1.0 km s ―1 and we expect this scenario to be testable with high-angular resolution direct imaging observations. A major consequence should be the discovery of other nearby binary systems with a similar architecture." @default.
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- W1962852298 date "2011-06-24" @default.
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- W1962852298 title "Evidence for the nearby F4V star λ Ara as a binary system" @default.
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- W1962852298 doi "https://doi.org/10.1111/j.1365-2966.2011.18764.x" @default.
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