A million binaries from Gaia eDR3: sample selection and validation of Gaia parallax uncertainties

@article{ElBadry2021AMB,
  title={A million binaries from Gaia eDR3: sample selection and validation of Gaia parallax uncertainties},
  author={Kareem El-Badry and Hans–Walter Rix and Tyler M. Heintz},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2021}
}
We construct from Gaia eDR3 an extensive catalog of spatially resolved binary stars within $\approx$ 1 kpc of the Sun, with projected separations ranging from a few au to 1 pc. We estimate the probability that each pair is a chance alignment empirically, using the Gaia catalog itself to calculate the rate of chance alignments as a function of observables. The catalog contains 1.3 (1.1) million binaries with >90% (>99%) probability of being bound, including 16,000 white dwarf -- main sequence… 

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References

SHOWING 1-10 OF 16 REFERENCES

Gaia Early Data Release 3

Context. Gaia Early Data Release 3 (Gaia EDR3) provides accurate astrometry for about 1.6 million compact (QSO-like) extragalactic sources, 1.2 million of which have the best-quality five-parameter…

Proper Motion Survey, University of Minnesota

  • 1979

Gaia Data Release 2 – The astrometric solution

Context. Gaia Data Release 2 ( Gaia DR2) contains results for 1693 million sources in the magnitude range 3 to 21 based on observations collected by the European Space Agency Gaia satellite during…

The Volume-complete Sample of M Dwarfs with Masses 0.1 ≀ M/MβŠ™ ≀ 0.3 within 15 Parsecs

M dwarfs with masses 0.1 ≀ M/MβŠ™ ≀ 0.3 are under increasing scrutiny because these fully convective stars pose interesting astrophysical questions regarding their magnetic activity and angular…

Validation of the accuracy and precision ofGaiaEDR3 parallaxes with globular clusters

Context.The recent early third data release (EDR3) from theGaiamission has produced parallaxes for 1.468 Γ— 109sources with better quality than those reported in the previous data release.…

Validation of the Gaia Early Data Release 3 zero-point model in the Kepler field

The Gaia Early Data Release 3 (EDR3) provides trigonometric parallaxes for 1.5 billion stars, with reduced systematics compared to Gaia Data Release 2 and reported precisions better by up to a factor…

Informing the Cataclysmic Variable Donor Sequence from Gaia DR2 Color-Magnitude and Inferred Variability Metrics

Short-period cataclysmic variables (spCVs), with orbital periods below the period gap ($P_{orb}$ $82% are likely to be spCVs: a noticeably higher recovery rate than previous light curve searches,…

The GALAH+ survey: Third data release

The recent exponential increase in spectroscopic, astrometric & photometric data has highlighted the scientific opportunities afforded by obtaining an ensemble of chemical element abundances for…

Gaia Data Release 2

Context. Gaia Data Release 2 provides high-precision astrometry and three-band photometry for about 1.3 billion sources over the full sky. The precision, accuracy, and homogeneity of both astrometry…

Gaia Data Release 2

Context. The second data release of the Gaia mission (DR2) includes an advance catalogue of variable stars. The classifications of these stars are based on sparse photometry from the first 22 months…