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- W4381250093 abstract "Abstract A-type stars with a large long-term proper motion change and without a known companion to cause it are candidates for being Sirius analogues. However, in most cases the culprit is expected to be a hitherto unknown low mass companion rather than a white dwarf. Here we report the discovery of a 0.50 M ⊙ companion to the nearby 1.64 M ⊙ star HIP 74696 at a projected separation ρ = 118.9 mas ↔ 6.2 au based on a VLTI/GRAVITY observation. This companion explains the Gaia–Hipparcos proper motion change of the primary. Together with the wide 660 au companion that was found by Gaia DR3 to be a 0.70 M ⊙ + 0.20 M ⊙ 1.5 au binary, this makes HIP 74696 a quadruple and part of the growing class of high multiplicity systems with an A-type star primary." @default.
- W4381250093 created "2023-06-20" @default.
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- W4381250093 date "2023-06-19" @default.
- W4381250093 modified "2023-09-25" @default.
- W4381250093 title "Hidden Companions to Intermediate-mass Stars. VI. Discovery of a 0.50M <sub>⊙</sub>, 6 au Companion to HIP 74696*" @default.
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- W4381250093 doi "https://doi.org/10.3847/2515-5172/acdee6" @default.
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