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- W4386044278 abstract "We infer the dynamical masses of stars across the Hertzsprung-Russell (H-R) diagram using wide binaries from the Gaia survey. Gaia's high-precision astrometry measures the wide binaries' orbital motion, which contains the mass information. Using wide binaries as the training sample, we measure the mass of stars across the two-dimensional H-R diagram using the combination of statistical inference and neural networks. Our results provide the dynamical mass measurements for main-sequence stars from 0.1 to 2 M$_odot$, unresolved binaries and unresolved triples on the main sequence, and the mean masses of giants and white dwarfs. Two regions in the H-R diagram show interesting behaviors in mass, where one of them is pre-main-sequence stars, and the other one may be related to close compact object companions like M dwarf-white dwarf binaries. These mass measurements depend solely on Newtonian dynamics, providing independent constraints on stellar evolutionary models and the occurrence rate of compact objects." @default.
- W4386044278 created "2023-08-22" @default.
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- W4386044278 date "2023-08-16" @default.
- W4386044278 modified "2023-09-24" @default.
- W4386044278 title "Dynamical masses across the Hertzsprung-Russell diagram" @default.
- W4386044278 doi "https://doi.org/10.48550/arxiv.2308.08584" @default.
- W4386044278 hasPublicationYear "2023" @default.
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