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A three-dimensional map of the Milky Way using classical Cepheid variable stars

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arxiv 1806.10653 v3 pith:BUSN5IZ2 submitted 2018-06-27 astro-ph.GA astro-ph.SR

classification astro-ph.GAastro-ph.SR
keywords milkycepheidclassicaldistancesgalaxyspiralstarstracers
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The Milky Way is a barred spiral galaxy, with physical properties inferred from various tracers informed by the extrapolation of structures seen in other galaxies. However, the distances of these tracers are measured indirectly and are model-dependent. We constructed a map of the Milky Way in three-dimensions based on the positions and distances of thousands of classical Cepheid variable stars. This map shows the structure of our Galaxy's young stellar population, and allows us to constrain the warped shape of the Milky Way's disk. A simple model of star formation in the spiral arms reproduces the observed distribution of Cepheids.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Into the Darkness: Classical and Type II Cepheids in the Zona Galactica Incognita

    astro-ph.SR 2019-08 conditional novelty 8.0 of 10

    A near-infrared census of the hidden far side of the Milky Way disk yields over 1,000 new classical and type II Cepheids, new extinction measurements, and tracers of the warp and age structure of the disk.

  2. Pulsation periods reveal tension between theoretical and empirical radii for classical Cepheids in eclipsing binary systems

    astro-ph.SR 2026-08 conditional novelty 6.0 of 10

    Using pulsation period instead of radius as a constraint for Cepheid evolutionary models systematically lowers the predicted radius, exposing a tension that is partially explained by a nonlinear radius increase in ful...

  3. Unveiling the Milky Way with a Gaia DR3 census of OB-type stars within 2 kpc. I. Tracing local Galactic structure, massive star-forming regions and core-collapse supernova progenitors

    astro-ph.GA 2026-07 conditional novelty 4.0 of 10

    A Gaia DR3-based census of 105,971 OB stars within 2 kpc maps local Galactic structure and identifies over 4,200 core-collapse supernova or black hole progenitor candidates.

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