Constraints on the structure of 16 Cygni A and 16 Cygni B using inversion techniques
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چکیده
منابع مشابه
A Differential Spectroscopic Analysis of 16 Cygni A and B
We utilize high-resolution, high signal-to-noise spectra to perform a differential analysis of Fe abundances in the common proper-motion pair 16 Cyg A and B. We confirm that both stars are slightly metal-rich compared to the Sun, and we show for the first time that the primary is enhanced in Fe relative to the secondary by a significant amount. We find ∆[Fe/H]= +0.025± 0.009. This tends to supp...
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High-precision radial-velocity observations of the solar-type star 16 Cygni B (HR 7504, HD 186427), taken at McDonald Observatory and at Lick Observatory, have each independently discovered periodic radial-velocity variations indicating the presence of a Jovian-mass companion to this star. The orbital Ðt to the combined McDonald and Lick data gives a period of 800.8 days, a velocity amplitude (...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2016
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201527032