Stellar and substellar companions from Gaia EDR3. Proper motion anomaly and resolved common proper-motion pairs

@article{Kervella2021StellarAS,
  title={Stellar and substellar companions from Gaia EDR3. Proper motion anomaly and resolved common proper-motion pairs},
  author={Pierre Kervella and Fr{\'e}d{\'e}ric Arenou and F. Th'evenin},
  journal={Astronomy \& Astrophysics},
  year={2021}
}
Context. The multiplicity fraction of stars, down to the substellar regime, is a parameter of fundamental importance for stellar formation, evolution, and planetology. The census of multiple stars in the solar neighborhood is however incomplete. Aims. Our study is aimed at detecting companions of Hipparcos catalog stars from the proper motion anomaly (PMa) they induce on their host star, namely, the difference between their long-term Hipparcos-Gaia and short-term Gaia proper motion vectors. We… 
7 Citations

3D Selection of 167 Substellar Companions to Nearby Stars

We analyze 5108 AFGKM stars with at least five high-precision radial velocity points, as well as Gaia and Hipparcos astrometric data, utilizing a novel pipeline developed in previous work. We find

Chemical Properties of the Local Disk and Halo. II. Abundances of 3745 M Dwarfs and Subdwarfs from Improved Model Fitting of Low-resolution Spectra

We present a model-fit pipeline to determine the stellar parameters of M-type dwarfs, which is an improvement on our previous work described in Hejazi et al. We apply this pipeline to analyze the

Constraints on the Spindown of Fully Convective M Dwarfs Using Wide Field Binaries

M dwarfs remain active over longer timescales than their Sunlike counterparts, with potentially devastating implications for the atmospheres of their planets. However, the age at which fully

Eclipsing Binaries in Dynamically Interacting Close, Multiple Systems

Close, compact, hierarchical, multiple stellar systems, i.e., multiples having an outer orbital period from months to a few years, comprise a small, but continuously growing group of the triple and

WDJ220838.73+454434.04: a White Dwarf Companion in the AR Lacertae System

We present WDJ220838.73+454434.04 (hereafter WD2208+454), a wide, co-moving white dwarf companion to the eclipsing binary system, AR Lacertae. The companion was discovered through the Backyard

Results of Magnetic-Field Measurements with the 6-m BTA Telescope. VII. Observations in 2013

Abstract —The paper provides complete measurement results of the effective longitudinal magnetic field $${{B}_{e}}$$ and the radial velocity $${{V}_{R}}$$ for 107 targets that are mainly

Gaia search for stellar companions of TESS Objects of Interest II

The first results of a new survey are reported, which explores the 2nd data release of the ESA-Gaia mission, in order to search for stellar companions of (Community) TESS Objects of Interest and to

References

SHOWING 1-10 OF 10 REFERENCES

Hipparcos, the New Reduction

An overview is presented on why and how the new reduction of the Hipparcos data was carried out, and in particular on how improved understanding of the dynamics of the Hipparcos satellite was

CESAM: a free code for stellar evolution calculations

Abstract The cesam code is a consistent set of programs and routines which perform calculations of 1D quasi-hydrostatic stellar evolution including microscopic diffusion of chemical species and

Astroquery: Access to online

  • 2008

Astronomy and Astro

  • 2000

Stellar and substellar companions from Gaia EDR3 Jiménez-Esteban

  • 2019

Stellar and substellar companions from Gaia

  • Publications of the Astronomical Society
  • 2016

The HIPPARCOS and TY-CHO catalogues. Astrometric and photometric star catalogues derived from the ESA HIPPARCOS Space Astrometry Mission Fabricius

  • ESA Special Publication
  • 1997

Publications of the Astronomical Society

  • A&A, 601,
  • 2007